Особисті дані приховані

OLEKSANDR BARANOVSKYI
Senior Full Stack Developer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
Results-driven Senior Full Stack Developer with 4+ years of professional experience building
high-performance web applications. Expertise in modern JavaScript ecosystem including
React.js, Next.js, NestJS, and cloud-native architectures on AWS. Strong background in
developing scalable microservices, implementing robust authentication systems, and
optimizing application performance. Committed to writing clean, maintainable code and
following best practices in testing and CI/CD workflows.

EDUCATION
Kyiv Aviation Institute — Kyiv, Ukraine | 2022-2026
Bachelor's Degree in Software Engineering
Completed a rigorous full-time computer science program focused on backend
architecture, cloud infrastructure, and core software engineering principles. Gained solid
skills in system design, algorithms, and full-stack web development using JavaScript,
Node.js, and modern frameworks.

Berdychiv Applied College of Industry, Economics and Law | 2019-2022
Specialist in Software Engineering
Completed foundational training in programming, databases, and web technologies.

SKILLS
Programming Languages: JavaScript, TypeScript, Python, SQL
Frontend Technologies: React.js, Next.js, Redux, Zustand, Material-UI, Tailwind CSS,
HTML5, CSS3, SASS
Backend Technologies: NestJS, Node.js, Express.js, REST APIs, GraphQL, Fastify
Databases: PostgreSQL, MongoDB, MySQL, Redis
Testing: Jest, Cypress, Playwright, React Testing Library, Supertest
DevOps & CI/CD: Docker, Kubernetes, GitHub Actions, Jenkins, GitLab CI
Cloud Platforms: AWS (EC2, S3, Lambda, RDS, ECS, CloudFront, API Gateway), Firebase,
Azure
Authentication: JWT, OAuth2, Auth0, Passport.js
Version Control: Git, GitHub, GitLab, Bitbucket Other Tools: Webpack, Vite, Nginx, PM2,
Postman
WORK EXPERIENCE
BnDigital | Senior Full Stack Developer | December 2024 - April 2026
PayFlow - Digital Payment Processing Platform (FinTech)
Architected and developed a comprehensive payment processing platform using Next.js
with server-side rendering and Tailwind CSS, handling 100,000+ daily transactions
Built secure backend microservices with NestJS and GraphQL APIs for payment gateway
integration, transaction processing, and fraud detection
Implemented PostgreSQL with optimized indexing and Redis caching layer reducing
transaction processing time by 55%
Developed real-time transaction monitoring dashboard with WebSocket integration for
instant payment status updates
Integrated with multiple payment providers (Stripe, PayPal, Adyen) and implemented
PCI-DSS compliant data handling
Deployed on AWS using ECS Fargate, RDS for database, and S3 for secure document
storage with encryption at rest
Implemented OAuth2 and JWT-based authentication with multi-factor authentication
for enhanced security
Established comprehensive testing strategy with Jest unit tests, Cypress E2E tests
achieving 92% code coverage
Set up automated CI/CD pipeline using GitHub Actions with automated security
scanning and deployment to staging/production environments

BetterMe | Full Stack Developer | May 2023 - October 2024
BetterMe Health - Personalized Wellness Platform (HealthTech)
Led development of personalized health and fitness tracking application using Next.js,
Zustand for state management, and Tailwind CSS
Built scalable backend with NestJS implementing user profiles, meal planning, workout
tracking, and progress analytics
Designed PostgreSQL database with complex relationships for user data, nutrition plans,
and exercise routines
Developed AI-powered recommendation engine for personalized meal and workout
suggestions based on user goals
Implemented real-time synchronization with wearable devices and health tracking APIs
(Apple Health, Google Fit)
Deployed on AWS using Lambda functions for serverless processing, API Gateway, and
RDS Multi-AZ for high availability
Created comprehensive authentication system with JWT tokens, refresh token rotation,
and OAuth2 social login integration
Established automated testing with Jest for unit tests and Cypress for integration
testing with 88% code coverage
Set up CI/CD pipeline using Jenkins with automated builds, tests, and blue-green
deployments
Vakoms | Junior Full Stack Developer | October 2021 - March 2023
CloudDesk - SaaS Project Management Platform (SaaS)
Developed collaborative project management tool using React.js, Redux, and Material-UI
with drag-and-drop functionality
Built REST APIs with NestJS for task management, team collaboration, time tracking, and
project analytics
Implemented PostgreSQL database with optimized queries for handling large project
datasets and complex filtering
Created real-time collaboration features using WebSocket for live updates and
notifications
Built file sharing and document management system with version control
Deployed on AWS EC2 with Load Balancer, RDS for database management, and S3 for file
storage
Implemented JWT authentication with role-based permissions for teams and
organizations
Set up CI/CD pipeline using GitHub Actions for automated testing and deployment
Created comprehensive test suite with Jest for backend services and Cypress for
frontend flows

LANGUAGES
English - B2 (Upper Intermediate)
Ukrainian - Native