Андрій

Popov Andrii Full-stack developer

CONTACT Email: [open contact info](look above in the "contact info" section) LinkedIn: Popov Andrii Location: Sumy, Ukraine
Phone: [open contact info](look above in the "contact info" section) Telegram: @nightcrawlerrrr

SUMMARY Full-stack developer with 2.5 years of experience building responsive web applications using
React, Next.js, TypeScript, and NestJS. Skilled in designing secure backend APIs,
implementing authentication systems, and working with PostgreSQL and MongoDB. Strong
collaborator who thrives in agile teams delivering client-focused solutions.

LANGUAGES English - C1
Ukrainian - native

PROFESSIONAL Full-stack developer | September 2024 - February 2026
EXPERIENCE Incode Group

Developed and maintained a real-time analytics dashboard using React, Next.js,
and NestJS, serving 10,000+ monthly active users
Integrated AI-powered search functionality using Vercel AI SDK and Pinecone
vector database, improving query response times by 40%
Designed and implemented RESTful and GraphQL APIs handling 30,000+ daily
requests with error handling and rate limiting
Contributed to migration from monolithic architecture to microservices using
Docker and AWS
Implemented real-time features using WebSockets for live data synchronization
across concurrent users
Supported junior developers through code reviews and pair programming sessions
Set up CI/CD pipelines with GitHub Actions, reducing manual deployment effort
and improving release frequency

Full-stack developer | August 2023 - September 2024
CGS-team

Built features for a multi-tenant SaaS platform using React, TypeScript, and NestJS,
supporting 20+ enterprise clients with role-based access control
Developed secure authentication system using JWT and OAuth 2.0 with refresh
token rotation
Created reusable UI component library with React and TailwindCSS, improving
frontend development speed
Optimized PostgreSQL queries and implemented Redis caching, reducing API
response times by 35%
Integrated Stripe payment processing for subscription management
Wrote unit and integration tests with Jest and React Testing Library, improving
code coverage to 75%
SKILLS Languages & Core
JavaScript, TypeScript

Frontend Development
React, Next.js, Redux, Zustand, React Query, RTK Query, Tailwind CSS, MUI, ShadCN/UI, React
Testing Library, Vitest

Backend Development
Node.js, Express, NestJS, REST, GraphQL, WebSockets, tRPC, Zod

Databases
PostgreSQL, MongoDB, Redis, Pinecone, Prisma, Drizzle

PaaS / BaaS
Firebase, Supabase

AI Integration
Vercel AI SDK, LangChain, OpenAI API, Anthropic API, RAG pipelines

DevOps & Cloud
Docker, docker-compose, AWS (EC2, S3, Lambda), CI/CD (GitHub Actions), Sentry

EDUCATION Sumy State University | 2022-2026
Bachelor of Computer Science