Welcome! I'm glad you're here. If you have a project or just want to say hi, don't hesitate to reach out! Contact
Oleksandr Andrushchenko
Software Engineer & Solution Architect
https://github.com/oleksandr-andrushchenko https://t.me/wild_s7 https://www.linkedin.com/in/oleksandr-andrushchenko-26ab3078 https://www.instagram.com/wild.snowgirl@HackerRank@HackerRank https://www.hackerrank.com/profile/o_andrushchenko
About Me
Senior Software Engineer with 15+ years of experience building and optimizing scalable applications across healthcare, fintech, e-commerce, media, and logistics. Skilled in Python, JavaScript/TypeScript, PHP, cloud architecture (AWS Certified Solutions Architect & Developer), and database design (RDBMS, NoSQL). Delivered 30+ projects, improving performance, scalability, and reliability. Experienced in architectural decision-making and driving projects from concept to deployment.
Projects (36)
Ambry Tracker Internal
Laboratory workflow tracker
Software Engineer
Software Engineer
Experience with Ambry Genetics Company website
- 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
Python (Programming Language) · FastAPI · Node.js · React.js · JavaScript · PHP · Symfony · MySQL · Elasticsearch · MongoDB · Redis · Amazon Web Services (AWS) · RabbitMQ · REST APIs · DevOps · Docker · Git
Feb 2024 - Jul 2025 · 1 yr 6 mos
Aliso Viejo, CA · Remote
Ambry Query Internal
Analytics system
Software Engineer
Software Engineer
Experience with Ambry Genetics Company website
- 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
Python (Programming Language) · Django · Express.js · React.js · Node.js · TypeScript · MongoDB · PostgreSQL · Redis · Amazon Web Services (AWS) · RabbitMQ · GraphQL · WebSocket · Apache Kafka · Docker · Git
Jul 2024 - Jul 2025 · 1 yr 1 mo
Aliso Viejo, CA · Remote
Blueprint Visionaries Startup
Blueprint-to-energy model conversion
Lead Software Engineer
Lead 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
Python · FastAPI · React.js · JavaScript · PostgreSQL · AWS Lambda · AWS SageMaker · OpenAI API · Detectron · REST APIs · Systems Design · Solution Architecture · Amazon Web Services (AWS) · Artificial Intelligence (AI) · Large Language Models (LLM) · Bootstrap · Docker · GitHub · Git
Aug 2023 - Dec 2024 · 1 yr 5 mos
Missoula, MT · On-site
See more at https://oleksandr-andrushchenko.com/#projects
Hard Skills
Languages & RuntimesJavaGolangPHPPythonJavaScriptNode.jsTypeScript
Frameworks & LibrariesYiiZendExpress.jsLaravelFastAPIDjangoSymfonyReact.jsCodeigniter
API & ProtocolsTCP/UDTgRPCSOAPWebsocketsHTTPREST APIAMQPGraphQLRPC
DB & StorageRedisMySQLElasticsearchAWS RDSAWS S3AWS DynamoDBPostgreSQLMongoDB
AWSSESLambdaRDSS3DynamoDBSNSSQSRoute 53ECSCloudFormationEventBridgeEC2CloudFrontSageMaker
DevOps & EnvKubernetesAWSGitTerraformGithub ActionsRabbitMQNginxLinuxDockerApache
Artificial IntelligenceOpenAIAWS SageMakerChatGPTDetectron
Work Experience (4)
Software Engineer
Ambry Genetics - Full-time
Project #1: Ambry Tracker
Software 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
Python (Programming Language) · FastAPI · Node.js · React.js · JavaScript · PHP · Symfony · MySQL · Elasticsearch · MongoDB · Redis · Amazon Web Services (AWS) · RabbitMQ · REST APIs · DevOps · Docker · Git
Project #2: Ambry Query
Software 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
Python (Programming Language) · Django · Express.js · React.js · Node.js · TypeScript · MongoDB · PostgreSQL · Redis · Amazon Web Services (AWS) · RabbitMQ · GraphQL · WebSocket · Apache Kafka · Docker · Git
Feb 2024 - Jul 2025 · 1 yr 6 mos
Aliso Viejo, CA · Remote
Senior Software Engineer (Full stack)
Paysera - Contract
Project #1: Paysera Parcels
Senior 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.)
Express.js · Node.js · React.js · TypeScript · REST APIs · PHP · Symfony · MySQL · MongoDB · Redis · Systems Design · Grafana · RabbitMQ · WebSocket · Docker · Kubernetes · Git
Project #2: Paysera - PrivatBank
Senior 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
Python (Programming Language) · Django · PostgreSQL · React.js · SOAP · APIs · Grafana · Prometheus · Sentry · Docker · Git
Project #3: Paysera Delivery
Full 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.)
PHP · Symfony · REST APIs · React.js · TypeScript · MySQL · Redis · DevOps · Docker · Kubernetes · Git
Oct 2020 - Jan 2023 · 2 yrs 4 mos
Vilnius, Lithuania · Remote
Senior Software Engineer
Softheme - Full-time
Project #1: Minicabit
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
Project #2: Adobe E-Sign
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
Sep 2015 - Jan 2017 · 1 yr 5 mos
Kyiv, Ukraine · On-site
See more at https://oleksandr-andrushchenko.com/#experience
30+
Projects Completed
15+
Years of Experience
1,200,000+
Lines of Code
20+
Happy Customers
Expertise (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
See more at https://oleksandr-andrushchenko.com/#services
Licenses & Certifications (7)
AWS Certified Solutions Architect – Professional Ongoing
Amazon Web Services (AWS)
AWS Certified Solutions Architect – Associate
AWS Certified Developer – Associate
Education (5)
National Technical University of Ukraine 'Kyiv Polytechnic Institute'
Bachelor's degree, Computer Science / Intellectual systems of decision making
Graduated from Educational-scientific complex ‘Institute of applied systematic analysis, National Technical University of Ukraine, Kyiv Polytechnic Institute and got higher basic education in direction of preparation “Computer sciences” and got qualification of Bachelor of Computer Sciences
39420917
Sep 2006 - Jun 2010 · 3 yrs 10 mos
Kyiv, Ukraine
See more at https://oleksandr-andrushchenko.com/#education
Done is better than perfect
