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Yaroslav Dombrovskyi
Full-Stack Software Engineer

Phone: [open contact info](look above in the "contact info" section)

Email: [open contact info](look above in the "contact info" section)

GitHub: https://github.com/olmerrr

LinkedIn: [open contact info](look above in the "contact info" section)

Summary
Full-Stack Software Engineer with 4+ years of experience building scalable web applications
and backend systems using React, Next.js, Node.js, and NestJS. Experienced in designing
REST APIs, working with PostgreSQL databases, implementing authentication (JWT), and
building production-ready backend services. Focused on delivering end-to-end features
from system design and database modeling to UI and deployment.

Tech Stack
Backend: Node.js, NestJS, Express.js, REST API, GraphQL, JWT, WebSockets, RabbitMQ
Frontend: React, Next.js, TypeScript, Redux Toolkit, React Query
Database: PostgreSQL, Prisma, TypeORM

AI & Automation: LLM API Integration (OpenAI, Claude), Prompt Engineering, RAG, AI
Workflow Automation

DevOps: Docker, CI/CD, Vercel, environment configuration

Tools: Git, Swagger, Jest, Cypress, Vite, Webpack
Developer Productivity: Cursor, GitHub Copilot, Windsurf, Claude

Projects

Sales Workspace (Full-Stack CRM)
Live: https://sales-workspace-gules.vercel.app/

GitHub: https://github.com/olmerrr/sales-workspace

Built a monorepo CRM application (React + NestJS) with event-driven architecture
• JWT authentication with refresh tokens
• Role-based access control (admin/user)
• PostgreSQL with TypeORM relations
• REST API with Swagger documentation
• Lead management system (pipeline, ownership)

• Implemented asynchronous processing using RabbitMQ for background jobs (notifications
/ task processing / event-driven communication between services)
• Dashboard with metrics
• Deployment: Vercel + PostgreSQL (Neon)

Coinflow (Full-Stack Dashboard)
Live: https://coinflowedge.vercel.app/

GitHub: https://github.com/olmerrr/coinflow

Next.js dashboard application
• Server-side API routes with external API integration
• PostgreSQL + Prisma caching layer
• Cron-based data refresh jobs
• Production deployment on Vercel

Matchday (Full-Stack)
Live: https://matchday-defx.vercel.app/

GitHub: https://github.com/olmerrr/matchday

Next.js application
• API routes with authentication
• PostgreSQL + Prisma integration
• Deployed on Vercel

Experience

Full Stack Developer (NDA) | Aug 2024 – Present
• Built REST API services using Node.js and PostgreSQL
• Developed full-stack features with Express.js
• Integrated frontend with backend services
• Improved API performance and response time

Full Stack Developer — NIX | May 2022 – Aug 2024
• Developed full-stack applications using React and Node.js
• Designed REST and GraphQL APIs
• Worked with PostgreSQL (Prisma ORM)
• Implemented authentication and role-based access control
• Built real-time features using WebSockets

Frontend Developer — Agency Experience
• Developed responsive UI components
• Integrated REST and GraphQL APIs
• Fixed production bugs and improved performance

Education
Kyiv National University of Technologies and Design
Master’s Degree — Economic Cybernetics