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Oleksandr Andrushchenko

Software Engineer & Solution Architect

+1 (561) 314-5672 oleksandr.andrushchenko1988@gmail.com Missoula, MT, USA

https://github.com/oleksandr-andrushchenko https://t.me/wild_s7 https://www.linkedin.com/in/oleksandr-andrushchenko-26ab3078 https://www.instagram.com/wild.snowgirl

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About Me

Senior Software Engineer with 15+ years of experience designing, building, and optimizing scalable applications across healthcare, fintech, e-commerce, media, and logistics. Skilled in software development (Python, PHP, JavaScript/TypeScript), cloud architecture (AWS Certified Solutions Architect & Developer), and database schema design (RDBMS, NoSQL). Delivered 30+ successful projects, improving performance, scalability, and reliability for high-traffic platforms. Adept at architectural decision-making, and driving projects from concept to deployment.

My Projects — 35

Ambry Tracker Private

Lab workflow tracker app
Software Engineer

Experience with Ambry Genetics Company website

Led the development of a cutting-edge lab flow tracking system to streamline, support and optimize lab workflows
Upgraded project programming language and dependencies (e.g., PHP, Symfony, and related libraries) to modern versions
Collaborated with DevOps to execute a successful lift-and-shift migration to AWS, troubleshooting complex issues during the transition
Automated previously manual, resource-intensive operations, achieving high performance and throughput improvements
Authored extensive project documentation (e.g., code style, best practices, how-to etc.)
Participated in architectural decision-making to design scalable and maintainable software solutions (e.g., integrations with other apps)
Mentored junior developers
Conducted technical interviews to evaluate and recruit new engineering talent

API Development · PHP · Elasticsearch · Solution Architecture · Symfony · React.js · Node.js · AWS · MongoDB · Python · Doctrine · RabbitMQ · JavaScript · MySQL · Docker · DevOps · Memcached · Redis · Git

Mar 2024 - Jun 2025 · 1 yr 3 mos

Aliso Viejo, California, United States · Remote

Paysera Parcels

Parcel locker network
Principal Full Stack Developer

Project website

Experience with Paysera Company website

Architected and developed the backend from scratch, including MySQL database schema and communication protocols (HTTP, AMQP, SOAP)
Built primary RESTful API with Symfony framework and a terminal-proxy service using Node.js
Created a mock application for non-production environments with Node.js and React
Developed SDKs in PHP (Composer) and JavaScript (Npm) for easier integration
Set up CI/CD pipelines using Docker, GitLab CI, and Helm, cutting deployment time
Documented APIs and projects (RAML, Confluence) and mentored junior developers
Enhanced front-end applications with React and ensured high-quality code with SOLID, DRY, and KISS principles

Express.js · API Development · JavaScript · DevOps · Git · OOP · REST APIs · React.js · PHP · Docker · TypeScript · MySQL · Symfony · Systems Design · APIs · Node.js · Doctrine · Grafana · RabbitMQ

Oct 2020 - Jan 2023 · 2 yrs 3 mos

Vilnius, Lithuania · Remote

IRIS CRM

Merchant CRM system
Senior Full Stack Developer

Project website

Experience with NMI Company website

Developed and maintained high-traffic customers onboardings
Optimized customers onboardings, resulting in a decrease of processing time

PHP · API Development · REST APIs · APIs · MySQL · JavaScript · Git · Docker · Laravel · GraphQL

Apr 2022 - Jan 2023 · 9 mos

Schaumburg, Illinois, United States · Remote

See more at https://oleksandr-andrushchenko.com/#projects

Dofasting

Weight loss app
Senior Software Developer

Project website

Experience with Kilo Health Company website

Developed and optimized the backend REST API service using PHP and Laravel, supporting seamless communication between the app and server
Designed and maintained the MySQL database, ensuring efficient data storage and retrieval
Integrated RabbitMQ for message queuing, enhancing the app's scalability and reliability, and enabling real-time updates for users
Utilized Docker for containerization, streamlining the deployment process and reducing environment inconsistencies
Collaborated with cross-functional teams to ensure the backend services met the needs of the front-end application and users

PHP · API Development · APIs · GraphQL · Laravel · MySQL · PHPUnit · Git · TypeScript · JavaScript · Python · Django

Jul 2021 - Dec 2021 · 5 mos

Vilnius, Lithuania · Remote

Paysera - PrivatBank

Paysera with PrivatBank integration
Senior Backend Engineer

Project website

Experience with Paysera Company website

Contributed to SOAP API development using Symfony (PHP) for money transfer services

Docker · MySQL · SOAP · APIs · Symfony · API Development

Aug 2022 - Jan 2023 · 5 mos

Vilnius, Lithuania · Remote

Paysera Delivery

Delivery providers aggregator service
Full Stack Developer

Project website

Experience with Paysera Company website

Contributed to RESTful API development using Symfony (PHP) for multi-vendor delivery services
Integrated new vendor APIs (Venipak, DHL, DPD) to expand service options
Participated in Agile processes, ensuring timely delivery and maintaining high code quality with robust test coverage

API Development · JavaScript · DevOps · PHP · Docker · TypeScript · MySQL · Symfony · APIs · React.js · REST APIs

Jul 2021 - Jan 2023 · 1 yr 6 mos

Vilnius, Lithuania · Remote

Blueprint Visionaries Co-founderStartup

Blueprint-to-energy model conversion
CTO. Lead Developer

Project website

Spearheaded the design and development of: Frontend, API and ETL Pipeline
Delivered fully working functionality, created from scratch
Utilized AWS services: EC2, Lambda, SageMaker, Step Functions, SQS, SNS, EventBridge etc.

Artificial Intelligence (AI) · Large Language Models (LLM) · ChatGPT · Python · React.js · APIs · AWS · Git · Docker · Systems Design · Solution Architecture · API Development · FastAPI

Mar 2024 - Aug 2025 · 1 yr 5 mos

Missoula, Montana, United States · On-site

Exam Me Founder

Online educational platform
Senior Software Engineer (Full Stack)

Project website

Spearheading the design and development of backend part using Node.js, GraphQL, Mongodb
Spearheading the design and development of frontend part using React.js
Spearheading the design and development of AI powered backend using Python and FastApi

Solution Architecture · PostgreSQL · React.js · AWS · MongoDB · GraphQL · Jest · Python · JavaScript · Git · Node.js · Docker · TypeScript

Dec 2024 - Present · 8 mos

Missoula, Montana, United States · On-site

Oleksandr Andrushchenko Founder

Personal website
Software engineer

Project website

AWS services used: S3, CloudFront, Route 53, SNS, Lambda, IAM, CloudWatch, ACM

Python · Bootstrap · AWS · Solution Architecture

Jun 2025 - Jul 2025 · 1 mo

Missoula, Montana, United States · On-site

Dragonfish

Online gaming platform
Lead Developer

Project website

Fully redesigned and transferred old portal

JavaScript · HTML · DevOps · WordPress · PHP · CSS · System Design

Mar 2020 - Aug 2020 · 5 mos

Kyiv, Ukraine · Remote

Rumble

Online video platform
Senior PHP Engineer

Project website

Experience with Rumble Inc. Company website

Enhanced and optimized the existing codebase to improve performance, maintainability, and scalability
Developed and integrated new features that increased user engagement and contributed to rise in customer satisfaction
Identified and resolved bugs, leading to a reduction in reported issues and improvement in system stability

PHP · HTML · CSS · MySQL · JavaScript · Docker · Git

Jul 2023 - Oct 2023 · 3 mos

Longboat Key, Florida, United States · Remote

Feedbacks UA Founder

Telegram chatbot for Ukraine users
Senior Software Engineer (Back End)

Project website

Spearheaded the design and development
Delivered fully working functionality, created from scratch
Utilized AWS services

PHP · APIs · Symfony · AWS · PHPUnit · Web Crawling · Git · Doctrine · Docker · Systems Design · Solution Architecture

May 2022 - Jan 2023 · 8 mos

Boca Raton, Florida, United States · On-site

Team4dev FounderRetired

Software outsourcing development
CTO. Lead Developer

Project website

Web Development · Systems Design

Mar 2020 - Feb 2022 · 1 yr 11 mos

Kyiv, Ukraine · On-site

Feedbacks USA Founder

Telegram chatbot for U.S. users
Senior Software Engineer (Back End)

Project website

Spearheaded the design and development
Delivered fully working functionality, created from scratch
Utilized AWS services

PHP · APIs · Symfony · AWS · PHPUnit · Web Crawling · Git · Doctrine · Docker · Systems Design · Solution Architecture

Oct 2021 - Apr 2023 · 1 yr 6 mos

Boca Raton, Florida, United States · On-site

Vulkan Retired

Online casino
Senior Full Stack Engineer

Project website

Experience with Yellow Stone Company website

Integrations with various gambling providers
Maintained and optimized existing services using Yii2 framework and Golang
Integrated 3rd party gambling vendors via API, increasing the platform's game offerings by ~200%
Processed and analyzed large datasets with Percona (MySQL), generating critical reports that informed business decisions
Delivered high-quality, scalable code, adhering to SOLID, DRY, and KISS principles
Participated in code reviews and daily Agile meetings

JavaScript · Git · Spring Boot · PHP · RabbitMQ · Go (Programming Language) · MySQL · Laravel · Yii · Memcached · Grafana

Dec 2019 - Sep 2020 · 9 mos

Kyiv, Ukraine · On-site

Girlway UA FounderRetired

E-commerce platform
CTO, Lead Developer

Project website

JavaScript · DevOps · Elasticsearch · Sphinx · PHP · MySQL · Systems Design · APIs

Jun 2016 - Feb 2022 · 5 yrs 8 mos

Kyiv, Ukraine

BeFind

Jobs abroad for ukrainians
Project coordinator

Project website

WordPress · Web Development · Systems Design

Nov 2019 - Oct 2020 · 11 mos

Kyiv, Ukraine · Remote

Girlway RU FounderRetired

E-commerce platform
CTO, Lead Developer

Project website

JavaScript · DevOps · Elasticsearch · Sphinx · PHP · MySQL · Systems Design · APIs

Jan 2017 - Feb 2022 · 5 yrs 1 mo

Kyiv, Ukraine

Mr Bet

Online casino
Senior Full Stack Engineer

Project website

Experience with Yellow Stone Company website

Integrations with various gambling providers
Maintained and optimized existing services using Yii2 framework and Golang
Integrated 3rd party gambling vendors via API, increasing the platform's game offerings by ~200%
Processed and analyzed large datasets with Percona (MySQL), generating critical reports that informed business decisions
Delivered high-quality, scalable code, adhering to SOLID, DRY, and KISS principles
Participated in code reviews and daily Agile meetings

JavaScript · Git · Spring Boot · PHP · RabbitMQ · Go (Programming Language) · MySQL · Laravel · Yii · Memcached · Grafana

Dec 2019 - Sep 2020 · 9 mos

Kyiv, Ukraine · On-site

Pelican program

Gambling partnership program
Senior Full Stack Engineer

Project website

Experience with Yellow Stone Company website

Supported and enhanced the web application using Laravel framework and Golang
Optimized system performance, improving logging and request processing speeds
Processed large volumes of data with Percona (MySQL), enabling the generation of detailed reports that improved partnership strategies
Mentored junior developers, accelerating their growth and improving team productivity
Collaborated daily with the project manager and product owner, streamlining communication and reducing project delivery time

JavaScript · Git · PHP · RabbitMQ · Python · MySQL · Yii · Memcached · Grafana · MongoDB

Dec 2019 - Sep 2020 · 9 mos

Kyiv, Ukraine · On-site

Metro Markets

Online marketplace platform
Senior PHP Developer

Project website

Experience with Ciklum Company website

Participated in development of backend API services using Symfony framework, supporting core marketplace functionalities and ensuring seamless integration with front-end components
Optimized database performance with MySQL, Memcache, and Redis
Implemented message queuing with RabbitMQ, enhancing system reliability and enabling efficient processing of high-volume transactions
Utilized Docker for containerized deployments, streamlining the development process and reducing deployment time
Conducted thorough unit and functional testing using PHPUnit, ensuring robust and error-free code
Collaborated with front-end developers to integrate backend services with frontend

PHP · Elasticsearch · API Development · APIs · Symfony · MySQL · PHPUnit · Doctrine · Git

Dec 2018 - Mar 2019 · 3 mos

Kyiv, Ukraine

Pepper

Discount sharing platform
Senior Software Engineer

Project website

Experience with Pepper Company website

Developed and integrated new admin features, streamlining administrative workflows and improving user management efficiency
Collaborated with front-end and back-end teams to ensure seamless feature integration and enhance overall platform performance

PHP · API Development · APIs · Laravel · MySQL · PHPUnit · JavaScript · Git

Jun 2017 - Sep 2017 · 3 mos

Berlin, Germany · On-site

Mydealz

Shopping community platform
Senior Software Engineer

Project website

Experience with Pepper Company website

Developed and deployed chat bots for Facebook, enhancing user engagement and automating customer interactions
Implemented functional improvements and resolved critical bugs, boosting system reliability
Optimized search functionality using Elasticsearch, improving search accuracy and speed
Contributed to Agile processes, ensuring timely delivery of features and maintaining high code quality

PHP · API Development · APIs · Laravel · MySQL · PHPUnit · JavaScript · Git

Jun 2017 - Sep 2017 · 3 mos

Berlin, Germany · On-site

Sinoptik

#1 Weather portal in Ukraine
Senior PHP Developer

Project website

Experience with UkrNet Company website

Managed a team of 4 developers, overseeing the architecture, development, and deployment of web services, APIs, and web applications
Designed and implemented architecture for handling large data sets, optimizing data migration strategies, and reducing time processing
Led project management efforts, including risk analysis and SCRUM methodology implementation, improving project delivery speed
Maintained and optimized dedicated server environments
Developed critical application components, enhancing system security and stability
Conducted interviews and onboarded new developers, contributing to team growth and maintaining a high standard of technical expertise

PHP · MariaDB · Memcached · Yii · MySQL · JavaScript · jQuery · Python · Git · HTML · CSS · Sphinx · Redis · Systems Design

Jan 2017 - Jun 2017 · 5 mos

Znaj Org FounderRetired

Online news aggregator
Lead Full Stack Engineer

Project website

JavaScript · DevOps · PHP · Web Crawling · MySQL · Systems Design

Jul 2017 - Jan 2019 · 1 yr 6 mos

Kyiv, Ukraine · On-site

Orakul

Horoscope web-platform
Senior PHP Developer

Project website

Experience with UkrNet Company website

Led the development of the horoscope platform
Architected and implemented features using PHP and Laravel, ensuring scalability and flexibility in a high-traffic environment
Optimized database interactions with MongoDB and MySQL, improving data retrieval speeds
Integrated RabbitMQ for efficient message queuing, resulting in more reliable and faster communication between services
Collaborated with cross-functional teams to enhance the platform’s performance

PHP · MariaDB · Memcached · Yii · MySQL · JavaScript · Git · HTML · Sphinx

Mar 2017 - Jun 2017 · 3 mos

Minicabit

Taxi service platform
Software engineer

Project website

Experience with Softheme Company website

Supported, bug-fixed, and developed new features for internal admin websites, PHO admin site, and the main website, all written in PHP
Improved user management and implemented features like auto reallocation, cab filters, and PayPal integration, enhancing user experience and increasing booking efficiency
Optimized and refactored old code, resulting in a boost in system performance
Collaborated closely with mobile developers to enhance API functionality, contributing to a smoother user experience across platforms
Led the transition from PHP to Node.js as part of a team, modernizing the technology stack and reducing server response times
Delivered robust, maintainable code with comprehensive test coverage (PHPUnit for PHP, Jasmine for JavaScript), ensuring long-term system stability

PHP · API Development · APIs · PostgreSQL · Symfony · Express.js · Node.js · REST APIs · MySQL · PHPUnit · JavaScript · Git · Docker · React.js

Sep 2015 - Jan 2017 · 1 yr 4 mos

London, United Kingdom · Remote

Utumi Co-founderStartupRetired

C2C online rent platform
CTO. Lead Developer

Spearheaded the design and development
Delivered fully working functionality, created from scratch

WordPress · PHP · Systems Design · DevOps · JavaScript

Jun 2019 - Sep 2019 · 3 mos

Kyiv, Ukraine · On-site

Adobe E-Sign

Adobe E-Sign with cloud providers integrations
Lead Developer

Project website

Experience with Softheme Company website

Various providers: Google Drive, Box etc.
Maintained and enhanced the primary RESTful API service using Symfony (PHP), ensuring seamless integration with Adobe E-Sign
Developed new vendor API integrations (e.g., Google Drive, Box), expanding document storage options and improving user flexibility
Contributed to Agile processes, including code reviews, daily stand-ups, and retrospectives, leading to a reduction in development cycle time
Delivered high-quality, scalable code adhering to SOLID, DRY, and KISS principles
Achieved system architecture goals, providing a highly available, scalable service for document signing and storage, reducing downtime

PHP · API Development · PostgreSQL · Symfony · REST APIs · PHPUnit · JavaScript · Git · Docker · APIs · Doctrine

May 2015 - Apr 2016 · 11 mos

San-Francisco, California, United States · Remote

Dukascopy workflows Private

Workflows system
Software Engineer (Full stack)

Experience with Dukascopy Bank SA Company website

Designed and implemented a module for processing user money transfers, streamlining financial operations within the CRM
Enhanced system functionality, leading to increase in processing speed and a reduction in errors related to financial transactions
Collaborated closely with cross-functional teams, ensuring smooth integration and deployment of new features

PHP · jQuery · API Development · APIs · REST APIs · MySQL · JavaScript · Git · HTML · CSS · Oracle Database

Apr 2014 - Sep 2014 · 5 mos

Kyiv, Ukraine · On-site

FXComm

Social network for traders
Software Engineer (Full stack)

Project website

Experience with Dukascopy Bank SA Company website

Developed key features for the social network, including user profile pages, activity feeds, and financial functionalities such as internal currency implementation and money transfers
Created and integrated new features, such as a JavaScript gallery widget and dynamic contest creation functionality, enhancing user engagement
Collaborated with Oracle developers on system architecture, optimizing data handling and social engine integrations
Led architecture design for new features, improving system scalability and performance
Improved system reliability through bug-fixing, resulting in reduction in reported issues
Generated financial reports for contests and ensured project page availability, contributing to a more reliable and user-friendly platform

PHP · jQuery · API Development · APIs · REST APIs · MySQL · JavaScript · Git · HTML · CSS · Oracle Database · Java · Systems Design

Mar 2013 - Sep 2014 · 1 yr 6 mos

Kyiv, Ukraine · On-site

Teaser Ads Private

Teaser ads campaigns management platform
PHP Developer

Experience with WebCase

Developed and supported ads management platform to increase user engagement, resulting in a boost in click-through rates on featured content
Created and optimized various reports, providing actionable insights that enhanced content management and advertising strategies
Built aggregators, trackers, and parsers, automating data collection and processing, which improved performance and operational efficiency
Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance
Automated tasks with Cron jobs, reducing manual intervention and increasing system reliability

PHP · APIs · MySQL · JavaScript · Web Application Development

May 2012 - Jan 2013 · 8 mos

Kyiv, Ukraine · On-site

FS.UA Retired

#2 TV & Movie platform in Ukraine
PHP Developer

Project website

Experience with WebCase

Developed and supported ads management platform to increase user engagement, resulting in a boost in click-through rates on featured content
Created and optimized various reports, providing actionable insights that enhanced content management and advertising strategies
Built aggregators, trackers, and parsers, automating data collection and processing, which improved performance and operational efficiency
Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance
Automated tasks with Cron jobs, reducing manual intervention and increasing system reliability

PHP · HTML · CSS · JavaScript · APIs · MySQL · Web Application Development · Git

May 2012 - Jan 2013 · 8 mos

Kyiv, Ukraine · On-site

Miniarsenal UA Retired

E-commerce Bitrix platform
Lead Full Stack Developer

Project website

Experience with Aniart Company website

Developed multiple e-commerce websites from scratch using the Bitrix platform, delivering fully functional and user-friendly online e-commerce platforms
Implemented custom features and integrations with PHP and JavaScript, enhancing site functionality and user experience
Optimized database performance with MySQL, reducing page load times and improving overall site responsiveness for existing e-commerce platforms
Integrated jQuery for dynamic and interactive user interfaces
Managed version control with Git, ensuring smooth development processes and effective team collaboration

Web Application Development · JavaScript · Bitrix · HTML · PHP · MySQL · Memcached · jQuery · CSS · Git

Nov 2011 - May 2012 · 6 mos

Kyiv, Ukraine

ICE-cat import

ICE-cat integrations
Junior PHP Developer

Project website

Experience with BINTIME IT Company Company website

Developed and customized Magento products importer module to enhance e-commerce functionality
Optimized database queries with MySQL, improving data retrieval efficiency and reducing load times
Collaborated with cross-functional teams to deliver high-quality modules on time, ensuring seamless integration with existing systems

PHP · MySQL · Magento

May 2011 - Oct 2011 · 5 mos

Kyiv, Ukraine · On-site

My Skills

TerraformWebsocketsChatGPTGithub ActionsGraphQLKubernetesAWSRedisRabbitMQPythonAWS LambdaFastAPINginxREST APIAI/LLMMySQLgRPCSystem DesignSymfonyReact.jsMongoDBAWS EventBridgeAWS SQSJavaScriptAWS DynamoDBLinuxElasticsearchRPCApachePostgreSQLSolution ArchitecturePHPNode.jsDockerCloudFormation

My Experience — 14

Software Developer

Ambry Genetics - Full-time

Company website

Project: Ambry Tracker

Software Engineer

Led the development of a cutting-edge lab flow tracking system to streamline, support and optimize lab workflows
Upgraded project programming language and dependencies (e.g., PHP, Symfony, and related libraries) to modern versions
Collaborated with DevOps to execute a successful lift-and-shift migration to AWS, troubleshooting complex issues during the transition
Automated previously manual, resource-intensive operations, achieving high performance and throughput improvements
Authored extensive project documentation (e.g., code style, best practices, how-to etc.)
Participated in architectural decision-making to design scalable and maintainable software solutions (e.g., integrations with other apps)
Mentored junior developers
Conducted technical interviews to evaluate and recruit new engineering talent

Feb 2024 - Jun 2025 · 1 yr 4 mos

Aliso Viejo, California, United States · Remote

Senior Software Engineer

Rumble Inc. - Full-time

Company website

Project: Rumble

Project website

Senior PHP Engineer

Enhanced and optimized the existing codebase to improve performance, maintainability, and scalability
Developed and integrated new features that increased user engagement and contributed to rise in customer satisfaction
Identified and resolved bugs, leading to a reduction in reported issues and improvement in system stability

PHP · HTML · CSS · MySQL · JavaScript · Docker · Git

Jul 2023 - Oct 2023 · 3 mos

Longboat Key, Florida, United States · Remote

Senior PHP Developer

NMI - Contract

Company website

Project: IRIS CRM

Project website

Senior Full Stack Developer

Developed and maintained high-traffic customers onboardings
Optimized customers onboardings, resulting in a decrease of processing time

PHP · API Development · REST APIs · APIs · MySQL · JavaScript · Git · Docker · Laravel · GraphQL

Apr 2022 - Jan 2023 · 9 mos

Schaumburg, Illinois, United States · Remote

See more at https://oleksandr-andrushchenko.com/#experience

Senior Software Engineer (Full stack)

Paysera - Contract

Company website

Project #1: Paysera Parcels

Project website

Principal Full Stack Developer

Architected and developed the backend from scratch, including MySQL database schema and communication protocols (HTTP, AMQP, SOAP)
Built primary RESTful API with Symfony framework and a terminal-proxy service using Node.js
Created a mock application for non-production environments with Node.js and React
Developed SDKs in PHP (Composer) and JavaScript (Npm) for easier integration
Set up CI/CD pipelines using Docker, GitLab CI, and Helm, cutting deployment time
Documented APIs and projects (RAML, Confluence) and mentored junior developers
Enhanced front-end applications with React and ensured high-quality code with SOLID, DRY, and KISS principles

Project #2: Paysera Delivery

Project website

Full Stack Developer

Contributed to RESTful API development using Symfony (PHP) for multi-vendor delivery services
Integrated new vendor APIs (Venipak, DHL, DPD) to expand service options
Participated in Agile processes, ensuring timely delivery and maintaining high code quality with robust test coverage

API Development · JavaScript · DevOps · PHP · Docker · TypeScript · MySQL · Symfony · APIs · React.js · REST APIs

Project #3: Paysera - PrivatBank

Project website

Senior Backend Engineer

Contributed to SOAP API development using Symfony (PHP) for money transfer services

Docker · MySQL · SOAP · APIs · Symfony · API Development

Oct 2020 - Jan 2023 · 2 yrs 3 mos

Vilnius, Lithuania · Remote

Senior Software Developer

Kilo Health - Contract

Company website

Project: Dofasting

Project website

Senior Software Developer

Developed and optimized the backend REST API service using PHP and Laravel, supporting seamless communication between the app and server
Designed and maintained the MySQL database, ensuring efficient data storage and retrieval
Integrated RabbitMQ for message queuing, enhancing the app's scalability and reliability, and enabling real-time updates for users
Utilized Docker for containerization, streamlining the deployment process and reducing environment inconsistencies
Collaborated with cross-functional teams to ensure the backend services met the needs of the front-end application and users

PHP · API Development · APIs · GraphQL · Laravel · MySQL · PHPUnit · Git · TypeScript · JavaScript · Python · Django

Jul 2021 - Dec 2021 · 5 mos

Vilnius, Lithuania · Remote

Senior Software Engineer (Back End)

Yellow Stone - Contract

Company website

Project #1: Pelican program

Project website

Senior Full Stack Engineer

Supported and enhanced the web application using Laravel framework and Golang
Optimized system performance, improving logging and request processing speeds
Processed large volumes of data with Percona (MySQL), enabling the generation of detailed reports that improved partnership strategies
Mentored junior developers, accelerating their growth and improving team productivity
Collaborated daily with the project manager and product owner, streamlining communication and reducing project delivery time

JavaScript · Git · PHP · RabbitMQ · Python · MySQL · Yii · Memcached · Grafana · MongoDB

Project #2: Vulkan

Project website

Senior Full Stack Engineer

Integrations with various gambling providers
Maintained and optimized existing services using Yii2 framework and Golang
Integrated 3rd party gambling vendors via API, increasing the platform's game offerings by ~200%
Processed and analyzed large datasets with Percona (MySQL), generating critical reports that informed business decisions
Delivered high-quality, scalable code, adhering to SOLID, DRY, and KISS principles
Participated in code reviews and daily Agile meetings

JavaScript · Git · Spring Boot · PHP · RabbitMQ · Go (Programming Language) · MySQL · Laravel · Yii · Memcached · Grafana

Project #3: Mr Bet

Project website

Senior Full Stack Engineer

Integrations with various gambling providers
Maintained and optimized existing services using Yii2 framework and Golang
Integrated 3rd party gambling vendors via API, increasing the platform's game offerings by ~200%
Processed and analyzed large datasets with Percona (MySQL), generating critical reports that informed business decisions
Delivered high-quality, scalable code, adhering to SOLID, DRY, and KISS principles
Participated in code reviews and daily Agile meetings

JavaScript · Git · Spring Boot · PHP · RabbitMQ · Go (Programming Language) · MySQL · Laravel · Yii · Memcached · Grafana

Dec 2019 - Sep 2020 · 9 mos

Kyiv, Ukraine · On-site

Senior PHP Developer

Ciklum - Contract

Company website

Project: Metro Markets

Project website

Senior PHP Developer

Participated in development of backend API services using Symfony framework, supporting core marketplace functionalities and ensuring seamless integration with front-end components
Optimized database performance with MySQL, Memcache, and Redis
Implemented message queuing with RabbitMQ, enhancing system reliability and enabling efficient processing of high-volume transactions
Utilized Docker for containerized deployments, streamlining the development process and reducing deployment time
Conducted thorough unit and functional testing using PHPUnit, ensuring robust and error-free code
Collaborated with front-end developers to integrate backend services with frontend

PHP · Elasticsearch · API Development · APIs · Symfony · MySQL · PHPUnit · Doctrine · Git

Dec 2018 - Mar 2019 · 3 mos

Kyiv, Ukraine · On-site

Senior Software Engineer

Pepper - Contract

Company website

Project #1: Pepper

Project website

Senior Software Engineer

Developed and integrated new admin features, streamlining administrative workflows and improving user management efficiency
Collaborated with front-end and back-end teams to ensure seamless feature integration and enhance overall platform performance

PHP · API Development · APIs · Laravel · MySQL · PHPUnit · JavaScript · Git

Project #2: Mydealz

Project website

Senior Software Engineer

Developed and deployed chat bots for Facebook, enhancing user engagement and automating customer interactions
Implemented functional improvements and resolved critical bugs, boosting system reliability
Optimized search functionality using Elasticsearch, improving search accuracy and speed
Contributed to Agile processes, ensuring timely delivery of features and maintaining high code quality

PHP · API Development · APIs · Laravel · MySQL · PHPUnit · JavaScript · Git

Jun 2017 - Sep 2017 · 3 mos

Berlin, Germany · On-site

Senior PHP Developer

UkrNet - Full-time

Company website

Project #1: Sinoptik

Project website

Senior PHP Developer

Managed a team of 4 developers, overseeing the architecture, development, and deployment of web services, APIs, and web applications
Designed and implemented architecture for handling large data sets, optimizing data migration strategies, and reducing time processing
Led project management efforts, including risk analysis and SCRUM methodology implementation, improving project delivery speed
Maintained and optimized dedicated server environments
Developed critical application components, enhancing system security and stability
Conducted interviews and onboarded new developers, contributing to team growth and maintaining a high standard of technical expertise

PHP · MariaDB · Memcached · Yii · MySQL · JavaScript · jQuery · Python · Git · HTML · CSS · Sphinx · Redis · Systems Design

Project #2: Orakul

Project website

Senior PHP Developer

Led the development of the horoscope platform
Architected and implemented features using PHP and Laravel, ensuring scalability and flexibility in a high-traffic environment
Optimized database interactions with MongoDB and MySQL, improving data retrieval speeds
Integrated RabbitMQ for efficient message queuing, resulting in more reliable and faster communication between services
Collaborated with cross-functional teams to enhance the platform’s performance

PHP · MariaDB · Memcached · Yii · MySQL · JavaScript · Git · HTML · Sphinx

Jan 2017 - Jun 2017 · 5 mos

Kyiv, Ukraine · On-site

Senior Software Engineer

Softheme - Full-time

Company website

Project #1: Adobe E-Sign

Project website

Lead Developer

Various providers: Google Drive, Box etc.
Maintained and enhanced the primary RESTful API service using Symfony (PHP), ensuring seamless integration with Adobe E-Sign
Developed new vendor API integrations (e.g., Google Drive, Box), expanding document storage options and improving user flexibility
Contributed to Agile processes, including code reviews, daily stand-ups, and retrospectives, leading to a reduction in development cycle time
Delivered high-quality, scalable code adhering to SOLID, DRY, and KISS principles
Achieved system architecture goals, providing a highly available, scalable service for document signing and storage, reducing downtime

PHP · API Development · PostgreSQL · Symfony · REST APIs · PHPUnit · JavaScript · Git · Docker · APIs · Doctrine

Project #2: Minicabit

Project website

Software engineer

Supported, bug-fixed, and developed new features for internal admin websites, PHO admin site, and the main website, all written in PHP
Improved user management and implemented features like auto reallocation, cab filters, and PayPal integration, enhancing user experience and increasing booking efficiency
Optimized and refactored old code, resulting in a boost in system performance
Collaborated closely with mobile developers to enhance API functionality, contributing to a smoother user experience across platforms
Led the transition from PHP to Node.js as part of a team, modernizing the technology stack and reducing server response times
Delivered robust, maintainable code with comprehensive test coverage (PHPUnit for PHP, Jasmine for JavaScript), ensuring long-term system stability

PHP · API Development · APIs · PostgreSQL · Symfony · Express.js · Node.js · REST APIs · MySQL · PHPUnit · JavaScript · Git · Docker · React.js

Sep 2015 - Jan 2017 · 1 yr 4 mos

Kyiv, Ukraine · On-site

Software Engineer (Full stack)

Dukascopy Bank SA - Full-time

Company website

Project #1: FXComm

Project website

Software Engineer (Full stack)

Developed key features for the social network, including user profile pages, activity feeds, and financial functionalities such as internal currency implementation and money transfers
Created and integrated new features, such as a JavaScript gallery widget and dynamic contest creation functionality, enhancing user engagement
Collaborated with Oracle developers on system architecture, optimizing data handling and social engine integrations
Led architecture design for new features, improving system scalability and performance
Improved system reliability through bug-fixing, resulting in reduction in reported issues
Generated financial reports for contests and ensured project page availability, contributing to a more reliable and user-friendly platform

PHP · jQuery · API Development · APIs · REST APIs · MySQL · JavaScript · Git · HTML · CSS · Oracle Database · Java · Systems Design

Project #2: Dukascopy workflows

Software Engineer (Full stack)

Designed and implemented a module for processing user money transfers, streamlining financial operations within the CRM
Enhanced system functionality, leading to increase in processing speed and a reduction in errors related to financial transactions
Collaborated closely with cross-functional teams, ensuring smooth integration and deployment of new features

PHP · jQuery · API Development · APIs · REST APIs · MySQL · JavaScript · Git · HTML · CSS · Oracle Database

Mar 2013 - Sep 2014 · 1 yr 6 mos

Kyiv, Ukraine · On-site

PHP Developer

WebCase - Full-time

Project #1: FS.UA

Project website

PHP Developer

Developed and supported ads management platform to increase user engagement, resulting in a boost in click-through rates on featured content
Created and optimized various reports, providing actionable insights that enhanced content management and advertising strategies
Built aggregators, trackers, and parsers, automating data collection and processing, which improved performance and operational efficiency
Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance
Automated tasks with Cron jobs, reducing manual intervention and increasing system reliability

PHP · HTML · CSS · JavaScript · APIs · MySQL · Web Application Development · Git

Project #2: Teaser Ads

PHP Developer

Developed and supported ads management platform to increase user engagement, resulting in a boost in click-through rates on featured content
Created and optimized various reports, providing actionable insights that enhanced content management and advertising strategies
Built aggregators, trackers, and parsers, automating data collection and processing, which improved performance and operational efficiency
Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance
Automated tasks with Cron jobs, reducing manual intervention and increasing system reliability

PHP · APIs · MySQL · JavaScript · Web Application Development

May 2012 - Jan 2013 · 8 mos

Kyiv, Ukraine · On-site

Software Engineer (Full stack)

Aniart - Full-time

Company website

Project: Miniarsenal UA

Project website

Lead Full Stack Developer

Developed multiple e-commerce websites from scratch using the Bitrix platform, delivering fully functional and user-friendly online e-commerce platforms
Implemented custom features and integrations with PHP and JavaScript, enhancing site functionality and user experience
Optimized database performance with MySQL, reducing page load times and improving overall site responsiveness for existing e-commerce platforms
Integrated jQuery for dynamic and interactive user interfaces
Managed version control with Git, ensuring smooth development processes and effective team collaboration

Web Application Development · JavaScript · Bitrix · HTML · PHP · MySQL · Memcached · jQuery · CSS · Git

Oct 2011 - May 2012 · 7 mos

Kyiv, Ukraine · On-site

PHP Developer

BINTIME IT Company - Full-time

Company website

Project: ICE-cat import

Project website

Junior PHP Developer

Developed and customized Magento products importer module to enhance e-commerce functionality
Optimized database queries with MySQL, improving data retrieval efficiency and reducing load times
Collaborated with cross-functional teams to deliver high-quality modules on time, ensuring seamless integration with existing systems

PHP · MySQL · Magento

May 2011 - Oct 2011 · 5 mos

Kyiv, Ukraine · On-site

Done is better than perfect

Sheryl Sandberg, Lean In (2013)

My Certifications — 7

Show credential

Dec 26, 2023 - Present · 1 yr 8 mos

My Education — 5

National Technical University of Ukraine 'Kyiv Polytechnic Institute'

Bachelor's degree, Computer Science / Intellectual systems of decision making

Custom Web Application Development

Design and build robust, scalable web applications using technologies like PHP, Python, Node.js, React.js, and PostgreSQL/MySQL

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Cloud Architecture Design & Migration (AWS)

Plan, build, or migrate systems to AWS using services like Lambda, DynamoDB, SQS, EventBridge, and Docker on ECS/EKS

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API Design & Integration Services

Design RESTful and GraphQL APIs, or integrate with third-party services (e.g., Stripe, Salesforce, internal APIs), with a focus on reliability, documentation, and security

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See more at https://oleksandr-andrushchenko.com/#services

Software Architecture Consulting & Technical Audits

Assess an existing system’s architecture and codebase, then provide guidance on how to improve scalability, performance, maintainability, or align with business goals

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DevOps Automation & CI/CD Setup

Implement CI/CD pipelines (GitHub Actions, GitLab, etc.), Docker-based deployment, testing automation, and infrastructure as code (e.g., Terraform, CloudFormation)

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Data Modeling & Backend Optimization

Design scalable relational (PostgreSQL, MySQL) and NoSQL (DynamoDB, MongoDB) schemas, implement caching (Redis, Memcache), and fine-tune query and backend performance

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We all become stories

Margaret Atwood, MaddAddam (2013)

Contact Me

Contact details

Phone +1 (561) 314-5672

Email oleksandr.andrushchenko1988@gmail.com

Address

Missoula, MT, USA