
Oleksandr Andrushchenko
Software Engineer & Solution Architect
About Me
Projects — 40

Aircon
https://aircon.aiLead Software Engineer
Segma
https://segma.ioSenior PHP Developer
- Optimized marketing message throughput via PostgreSQL tuning and Redis caching.
- Migrated user system to a scalable multi-tenant SaaS architecture.
- Improved analytics performance by moving from PostgreSQL to ClickHouse.
- Built and optimized backend services with Laravel.
- Improved database performance and API response times.
- Designed efficient PostgreSQL schemas for high-load systems.
- Enhanced caching and queuing for scalability.
- Integrated carrier APIs and internal microservices.
- Delivered clean, testable, fault-tolerant PHP code.
- Collaborated with DevOps, QA, and product teams.
- Mentored junior developers and reviewed code.
- Implemented Docker and Git-based CI/CD workflows.
- Refined RESTful APIs for better interoperability.

Ambry Tracker
InternalSoftware Engineer
- Built and optimized APIs (Python/FastAPI), backends (PHP/Symfony), and frontends (React.js).
- Designed and optimized storage, query, and search layers (MySQL, MongoDB, Elasticsearch).
- Automated manual operations and achieving up to 20× faster execution and higher reliability (TS, etc.).
- Supported and troubleshot lift-and-shift migrations to AWS (EC2, LB, Networking, etc.).
- Upgraded programming languages, frameworks, and dependencies (e.g., PHP, Symfony, Node.js) to modern, secure versions.
- Delivered integrations with enterprise systems (SAP, QT, RP) and internal microservices.
- Authored and maintained technical documentation (code style, architecture, data flow diagrams).
- Contributed to architectural design for scalable, real-time systems (AWS, Docker, REST APIs)
- Mentored junior developers and conducted technical interviews to expand the engineering team.

Ambry Query
InternalSoftware Engineer
- Maintained and extended legacy backend systems (Python/Django).
- Developed new features and services using the MERN stack (MongoDB, Express.js, React.js, Node.js, GraphQL).
- Designed and maintained communication layers (HTTP APIs, WebSocket, RabbitMQ) and real-time and asynchronous operations (Apache Kafka).
- Integrated internal enterprise systems (AT, RP, SAP) to streamline data exchange.
- Optimized and refactored database queries (PostgreSQL, MongoDB) for faster performance.
- Diagnosed and resolved production issues, improving system stability and user experience.
- Conducted technical interviews to assess and recruit developers.
Blueprint Visionaries
https://blueprintvisionaries.netCo-founderStartupRetiredLead Software Engineer
- Designed and built full-stack solutions from scratch — APIs (FastAPI), backends (Python), and frontends (React.js, Bootstrap).
- Designed and optimized database models and queries (PostgreSQL) for performance and scalability.
- Architected a scalable order-processing pipeline (AWS EventBridge, Step Functions, SQS, Lambda, etc.).
- Managed and provisioned AWS infrastructure (CloudFormation).
- Implemented automated CI/CD pipelines (GitHub Actions) to streamline deployments.
- Delivered integrations with external and AI-powered systems (AWS SageMaker, OpenAI, Ekotrope, SnuggPro, etc.).
- Collaborated with stakeholders to define requirements, prioritize features, and align deliverables.
- Diagnosed and resolved production issues to maintain system reliability and user satisfaction.

Paysera Parcels
https://www.paysera.com/v2/en/blog/paysera-to-launch-parcel-networkSenior Full Stack Engineer
- Designed and developed event-driven APIs (Express.js/Node.js), frontends (React.js), and communication protocols (HTTP, AMQP, Protobuf/WebSocket).
- Designed and optimized database storage and queries (MySQL, MongoDB, Redis).
- Developed SDKs for internal and external use (PHP/Symfony, TypeScript).
- Implemented CI/CD pipelines and containerized deployments (Docker, GitLab CI, Helm, Kubernetes).
- Documented APIs and projects, and mentored junior developers (RAML, Confluence).
- Delivered integrations with internal systems (Payments, Notifications, etc.).

IRIS CRM
https://www.nmi.com/products/merchant-relationship-managementSenior Full Stack Developer
- Developed and maintained high-traffic customers onboardings.
- Optimized customers onboardings, resulting in a decrease of processing time.
PromptCatalog
https://promptcatalog.ioFounderFounding Engineer
- Founded and developed a high-performance LLM prompt catalog platform from scratch.
- Built a universal, extensible architecture using Python, FastAPI, and AWS serverless services.
- Implemented scalable, cost-efficient deployment using S3, CloudFront, Lambda, DynamoDB, and CloudFormation.
- Designed a responsive, accessible, and SEO-optimized front-end using Bootstrap, JavaScript, and jQuery.
- Integrated Amazon Cognito for secure, standards-compliant user authentication.
- Established automated build and deployment workflows to ensure reliability and fast iteration.
SysDesPro
https://sysdespro.comFounderLead Software Engineer
- Founded and developed a high-performance software system design blog platform from scratch.
- Built a universal, extensible architecture using Python, FastAPI, and AWS serverless services.
- Implemented scalable, cost-efficient deployment using S3, CloudFront, Lambda, DynamoDB, and CloudFormation.
- Designed a responsive, accessible, and SEO-optimized front-end using Bootstrap, JavaScript, and jQuery.
- Integrated Amazon Cognito for secure, standards-compliant user authentication.
- Established automated build and deployment workflows to ensure reliability and fast iteration.
Oleksandr Andrushchenko
https://oleksandr-andrushchenko.comFounderSoftware Engineer
- Built and deployed a professional website from scratch.
- Backend: Python, FastAPI, Docker.
- Frontend: JavaScript, Bootstrap.
- AWS: S3, CloudFront, Route 53, SNS, Lambda, IAM, ACM, CloudWatch, CloudFormation.
- CI/CD: GitHub Actions, Makefile.

Rumble
https://rumble.comSenior Backend Developer
- 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.

Dofasting
https://dofasting.comSenior Backend Engineer
- 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.

Paysera - PrivatBank
https://www.paysera.com/v2/en/privatbank-cash-pickupSenior Backend Engineer
- Developed and deployed a secure, end-to-end cash transfer service (Python/Django, PostgreSQL, React.js).
- Designed a reliable transaction processing pipeline with bank API integrations (SOAP/WSDL) to ensure accuracy and consistency.
- Enforced security and compliance through encryption, audit logging, and secure data handling.
- Monitored (Sentry, Grafana, Prometheus) and resolved production issues to maintain high system availability.

Paysera Delivery
https://www.paysera.com/v2/en/checkout-delivery-serviceFull Stack Developer
- Developed and maintained RESTful APIs for multi-vendor delivery services (PHP/Symfony, React.js).
- Integrated and tested new vendor APIs to expand service options (Venipak, DHL, DPD, etc.).
- Designed and optimized database queries and storage for delivery tracking and order management (MySQL, Redis).
- Participated in Agile processes, ensuring timely feature delivery and maintaining high code quality with robust test coverage (PHPUnit).
- Implemented error handling, logging, and monitoring to improve system reliability (Sentry, Grafana).
- Documented APIs and internal processes to improve knowledge sharing and onboarding (Confluence).
- Mentored junior developers and conducted code reviews.
- Delivered integrations with internal systems (Payments, Notifications, Parcel Network, etc.).
Exam Me
https://github.com/oleksandr-andrushchenko/exam-me-apiFounderSenior Software Engineer (Full Stack)
- Architected and implemented a robust backend using Node.js, GraphQL, and MongoDB, optimizing performance and scalability.
- Developed and optimized a modern React.js frontend, improving usability and interface responsiveness.
Team4dev
https://web.archive.org/web/20211226202802/http://team4dev.net/FounderRetiredCTO. Lead Developer

Dragonfish
https://www.broadwaygamingb2b.comLead Developer
- Led the full redesign and modernization of the legacy gaming portal, improving performance, UX, and maintainability.
- Successfully migrated the old platform to a new architecture with minimal downtime and zero data loss.
- Rebuilt core frontend and backend components using JavaScript, PHP, HTML, and CSS to enhance stability and scalability.
- Introduced improved system design practices, enabling faster feature development and easier long-term support.
- Implemented DevOps processes, including automated deployments and environment optimizations, reducing release time.
- Optimized WordPress-based modules and integrations to improve page load speed and content management workflow.
- Collaborated with stakeholders to define technical priorities and deliver roadmap features on schedule.
- Enhanced platform security and reliability through code refactoring, configuration hardening, and monitoring improvements.

Feedbacks UA
https://t.me/Anonimni_Vidhuky_Ukraina_BotFounderSenior Software Engineer (Back End)
- Spearheaded the design and development.
- Delivered fully working functionality, created from scratch.
- Utilized AWS services.

Feedbacks USA
https://t.me/Anonymous_Feedbacks_USA_BotFounderSenior Software Engineer (Back End)
- Founded and developed a Telegram-based chatbot product for U.S. users, delivering a fully functional system from concept to production.
- Designed and built the entire backend architecture from scratch, ensuring high reliability, scalability, and maintainability.
- Implemented core business logic, API integrations, and data workflows powering real-time user interactions.
- Leveraged AWS services (Lambda, API Gateway, DynamoDB, SQS, CloudWatch) to build a cost-efficient, serverless, event-driven platform.
- Established CI/CD workflows and deployment automation to accelerate feature delivery and reduce operational overhead.
- Led the technical roadmap, product decisions, and end-to-end development lifecycle as both founder and senior engineer.
- Optimized system performance and reduced latency through efficient data modeling and distributed processing.
Vulkan
https://vulkancasino.uaRetiredSenior 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.

BeFind
https://befind.com.ua/enProject coordinator
- Coordinated communication between stakeholders and the development team.
- Translated business requirements into actionable technical tasks.
- Managed product roadmap, priorities, and expectations across teams.
- Ensured feature delivery aligned with project goals and user needs.
- Facilitated feedback loops and clarified requirements to reduce development friction.
- Oversaw testing phases and validated completed functionality before release.
- Helped maintain project timelines by removing blockers and improving workflow clarity.
Girlway UA
https://web.archive.org/web/20220115060708/http://girlway.com.uaFounderRetiredCTO, Lead Developer
- Designed and built an affiliate e-commerce platform from scratch, including product ingestion, catalog management, and tracking.
- Integrated multiple affiliate providers through a flexible, extensible integration framework.
- Developed high-performance ETL pipelines to aggregate and normalize large product feeds.
- Implemented scalable architecture with caching, queues, and optimized databases to handle large catalogs and high traffic.
- Created accurate click-tracking and attribution logic, improving reliability of revenue reporting.
- Set up full CI/CD pipelines, containerization, monitoring, and alerting to ensure stable 24/7 operations.
- Built real-time dashboards and analytics for clicks, revenue, provider performance, and inventory.
- Handled all engineering responsibilities as the sole developer, including backend, frontend, DevOps, and architecture.
- Launched the platform end-to-end, supporting continuous feature development and long-term maintenance.
Girlway RU
https://web.archive.org/web/20220128174509/http://girlway.com.ruFounderRetiredCTO, Lead Developer
- Designed and built an affiliate e-commerce platform from scratch, including product ingestion, catalog management, and tracking.
- Integrated multiple affiliate providers through a flexible, extensible integration framework.
- Developed high-performance ETL pipelines to aggregate and normalize large product feeds.
- Implemented scalable architecture with caching, queues, and optimized databases to handle large catalogs and high traffic.
- Created accurate click-tracking and attribution logic, improving reliability of revenue reporting.
- Set up full CI/CD pipelines, containerization, monitoring, and alerting to ensure stable 24/7 operations.
- Built real-time dashboards and analytics for clicks, revenue, provider performance, and inventory.
- Handled all engineering responsibilities as the sole developer, including backend, frontend, DevOps, and architecture.
- Launched the platform end-to-end, supporting continuous feature development and long-term maintenance.

Mr Bet
https://mr.betSenior 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.

Pelican program
https://pelicanpartners.biz/enSenior 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.
Metro Markets
https://metro-markets.deSenior 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.

Pepper
https://nl.pepper.comSenior 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.
Mydealz
https://www.mydealz.deSenior 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.
Sinoptik
https://sinoptik.uaLead 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.

Orakul
https://orakul.comLead 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.
Znaj Org
https://web.archive.org/web/20181121025938/http://znaj.orgFounderRetiredLead Full Stack Engineer
- Led the development of online news aggregator.
- Architected and implemented features using Symfony (PHP), ensuring scalability and flexibility in a high-traffic environment.
- Optimized database interactions with MySQL, improving data writes and reads.
- Integrated RabbitMQ for efficient message queuing, resulting in more reliable background workloads.

Minicabit
https://www.minicabit.comSoftware 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.
Utumi
Co-founderStartupRetiredCTO. Lead Developer
- Spearheaded the design and development.
- Delivered fully working functionality, created from scratch.
Adobe E-Sign
https://www.adobe.com/acrobat/business/integrations.htmlLead 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.

Dukascopy workflows
InternalSoftware Engineer (Full stack)
- Developed and deployed a secure, end-to-end cash transfer service (Python/Django, PostgreSQL, React.js).
- Designed a reliable transaction processing pipeline with bank API integrations (SOAP/WSDL) to ensure accuracy and consistency.
- Enforced security and compliance through encryption, audit logging, and secure data handling.
- Monitored (Sentry, Grafana, Prometheus) and resolved production issues to maintain high system availability.
FXComm
https://www.dukascopy.com/fxcommSoftware 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.

Teaser Ads
InternalPHP 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.

FS.UA
https://web.archive.org/web/20130620042801/http://fs.uaRetiredPHP Developer
- Developed and supported online entertainment platform.
- Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance.

Miniarsenal UA
https://web.archive.org/web/20161230033550/http://miniarsenal.com/ru/RetiredLead 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.

ICE-cat import
https://bintime.com/cases/supporting-ecommerce-through-one-global-product-catalogJunior 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.
Hard Skills
Work Experience — 16

Lead Software Engineer

Senior PHP Developer
- Optimized marketing message throughput via PostgreSQL tuning and Redis caching.
- Migrated user system to a scalable multi-tenant SaaS architecture.
- Improved analytics performance by moving from PostgreSQL to ClickHouse.
- Built and optimized backend services with Laravel.
- Improved database performance and API response times.
- Designed efficient PostgreSQL schemas for high-load systems.
- Enhanced caching and queuing for scalability.
- Integrated carrier APIs and internal microservices.
- Delivered clean, testable, fault-tolerant PHP code.
- Collaborated with DevOps, QA, and product teams.
- Mentored junior developers and reviewed code.
- Implemented Docker and Git-based CI/CD workflows.
- Refined RESTful APIs for better interoperability.

Software Engineer II
- Built and optimized APIs (Python/FastAPI), backends (PHP/Symfony), and frontends (React.js).
- Designed and optimized storage, query, and search layers (MySQL, MongoDB, Elasticsearch).
- Automated manual operations and achieving up to 20× faster execution and higher reliability (TS, etc.).
- Supported and troubleshot lift-and-shift migrations to AWS (EC2, LB, Networking, etc.).
- Upgraded programming languages, frameworks, and dependencies (e.g., PHP, Symfony, Node.js) to modern, secure versions.
- Delivered integrations with enterprise systems (SAP, QT, RP) and internal microservices.
- Authored and maintained technical documentation (code style, architecture, data flow diagrams).
- Contributed to architectural design for scalable, real-time systems (AWS, Docker, REST APIs)
- Mentored junior developers and conducted technical interviews to expand the engineering team.
- Maintained and extended legacy backend systems (Python/Django).
- Developed new features and services using the MERN stack (MongoDB, Express.js, React.js, Node.js, GraphQL).
- Designed and maintained communication layers (HTTP APIs, WebSocket, RabbitMQ) and real-time and asynchronous operations (Apache Kafka).
- Integrated internal enterprise systems (AT, RP, SAP) to streamline data exchange.
- Optimized and refactored database queries (PostgreSQL, MongoDB) for faster performance.
- Diagnosed and resolved production issues, improving system stability and user experience.
- Conducted technical interviews to assess and recruit developers.

Senior Backend Developer
- 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.

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

Senior PHP Developer
- Designed and developed event-driven APIs (Express.js/Node.js), frontends (React.js), and communication protocols (HTTP, AMQP, Protobuf/WebSocket).
- Designed and optimized database storage and queries (MySQL, MongoDB, Redis).
- Developed SDKs for internal and external use (PHP/Symfony, TypeScript).
- Implemented CI/CD pipelines and containerized deployments (Docker, GitLab CI, Helm, Kubernetes).
- Documented APIs and projects, and mentored junior developers (RAML, Confluence).
- Delivered integrations with internal systems (Payments, Notifications, etc.).
- Developed and deployed a secure, end-to-end cash transfer service (Python/Django, PostgreSQL, React.js).
- Designed a reliable transaction processing pipeline with bank API integrations (SOAP/WSDL) to ensure accuracy and consistency.
- Enforced security and compliance through encryption, audit logging, and secure data handling.
- Monitored (Sentry, Grafana, Prometheus) and resolved production issues to maintain high system availability.
- Developed and maintained RESTful APIs for multi-vendor delivery services (PHP/Symfony, React.js).
- Integrated and tested new vendor APIs to expand service options (Venipak, DHL, DPD, etc.).
- Designed and optimized database queries and storage for delivery tracking and order management (MySQL, Redis).
- Participated in Agile processes, ensuring timely feature delivery and maintaining high code quality with robust test coverage (PHPUnit).
- Implemented error handling, logging, and monitoring to improve system reliability (Sentry, Grafana).
- Documented APIs and internal processes to improve knowledge sharing and onboarding (Confluence).
- Mentored junior developers and conducted code reviews.
- Delivered integrations with internal systems (Payments, Notifications, Parcel Network, etc.).

Senior Backend Engineer
- 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.

Senior PHP Developer
- 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.
- 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.
- 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.

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.

Senior PHP Developer
- 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.
- 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.

Lead 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.
- 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.

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.
- 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.

Web Developer
- Developed and deployed a secure, end-to-end cash transfer service (Python/Django, PostgreSQL, React.js).
- Designed a reliable transaction processing pipeline with bank API integrations (SOAP/WSDL) to ensure accuracy and consistency.
- Enforced security and compliance through encryption, audit logging, and secure data handling.
- Monitored (Sentry, Grafana, Prometheus) and resolved production issues to maintain high system availability.
- 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 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.
- Developed and supported online entertainment platform.
- Collaborated on backend development using PHP 5 and MySQL, ensuring seamless data flow and robust system performance.

PHP 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.

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.
Services — 6
Custom Web Application Development
Design and build robust, scalable web applications using technologies like PHP, Python, Node.js, React.js, and PostgreSQL/MySQL
Cloud Architecture Design & Migration (AWS)
Plan, build, or migrate systems to AWS using services like Lambda, DynamoDB, SQS, EventBridge, and Docker on ECS/EKS
API Design & Integration Services
Design RESTful and GraphQL APIs, or integrate with third-party services (e.g., LLMs, Gateways, internal APIs), with a focus on reliability, documentation, and security
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
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)
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
Licenses & Certifications — 8

AWS Certified AI Practitioner
Ongoing
AWS Certified Solutions Architect – Professional
https://www.credly.com/badges/167f0297-9a10-481e-9ac2-29f780f85182/public_url
AWS Certified Solutions Architect – Associate
https://www.credly.com/badges/7b014c67-bb03-4db8-a638-4ab7b5ebe8ec/public_url
AWS Certified Developer – Associate
https://www.credly.com/badges/d40712a6-6137-4491-af71-b70af3ff96e4/public_url
AWS Certified Cloud Practitioner
https://www.credly.com/badges/eb3a9f09-e8c9-4d6e-aa0a-050ff11d52e8/public_url
AWS Cloud Quest: Cloud Practitioner
https://www.credly.com/badges/f27d9f19-9ebb-4145-a504-b6aa24e9f338/public_url
AWS Knowledge: Architecting
Retiredhttps://www.credly.com/badges/98a70156-2dd5-4cb1-83f5-1067a53b6f30/public_url
AWS Knowledge: Cloud Essentials
https://www.credly.com/badges/90263876-5515-478b-9683-e072b6557f30/public_urlEducation — 5

National Technical University of Ukraine 'Kyiv Polytechnic Institute'
https://kpi.ua
National Technical University of Ukraine 'Kyiv Polytechnic Institute'
https://kpi.ua
National Technical University of Ukraine 'Kyiv Polytechnic Institute'
https://kpi.uaHigh school No. 323 of International Relations
https://323.kyiv.uaAcademic Lyceum No. 5
http://obukhiv-school5.edukit.kiev.uaDone is better than perfect























