Сергій

Full Stack Engineer

Considering positions:
Full Stack Engineer, Fullstack-програміст, Web software engineer, Frontend-програміст, Backend-програміст, Node.js-розробник, Програміст Golang, Javascript-програміст
Employment type:
full-time
Age:
41 years
City of residence:
Kharkiv
Ready to work:
Remote

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Work experience

Fullstack-розробник

from 03.2025 to 06.2026 (1 year 4 months)
Product Development, Дистанційно (IT)

Hiring Platform SaaS (Full-stack):
- Developed a recruitment automation SaaS for managing vacancies, candidates, interview workflows, and candidate evaluation.
Implemented Stripe subscriptions, billing workflows, and plan-based quota logic.
- Built AI-powered candidate-to-vacancy matching using OpenAI embeddings.
- Designed a modular backend using NestJS, Prisma, and PostgreSQL.
- Developed calendar event management and global search across platform entities.
- Built an AI-powered assistant that provided contextual guidance on application workflows and directed users to relevant platform pages based on their requests.
- Tech: TypeScript, NestJS, Remix, Prisma, PostgreSQL, Stripe, OpenAI API.

Fullstack-розробник

from 04.2024 to 01.2025 (10 months)
ElifTech, Дистанційно (IT)

Soil Analysis CRM System (Full-stack):
- Developed full-stack functionality for a CRM supporting chemical analysis and environmental data processing.
- Implemented backend logic for environmental data evaluation and mathematical calculations.
- Developed end-to-end validation schemas with Zod for secure and accurate laboratory data uploads.
- Contributed to PostgreSQL schema design and wrote optimized queries using Drizzle ORM.
- Tech: Next.js, Node.js, PostgreSQL, Drizzle, Zod.

Fullstack-розробник

from 10.2023 to 04.2024 (7 months)
Independent, Дистанційно (IT)

- Updated full-stack expertise through independent projects using React, Next.js, Node.js, NestJS, Prisma, and PostgreSQL.
- Completed technical assessments, communicated with prospective clients, and explored freelance opportunities through Upwork.

Fullstack-розробник

from 12.2020 to 04.2023 (2 years 5 months)
NLT, Харків (IT)

Administrative Dashboard for Multi-Service Platform (Frontend):
- Built interfaces for viewing and managing customer and transaction data.
Implemented filtering, sorting, and pagination for data-heavy tables.
- Developed role-based access control with granular permissions for different user roles.
- Implemented two-factor authentication using QR codes.
- Collaborated within a six-person cross-functional team and integrated the frontend with .NET-based backend APIs.
- Tech: React, Redux Toolkit, TypeScript.

Cryptocurrency Platform (Full-stack):
- Developed a platform supporting cryptocurrency transactions with BTC, ETH, and USDT.
- Integrated MetaMask and WalletConnect for authentication and transaction workflows.
- Implemented a multi-level referral system with reward calculation logic.
- Tech: React, Express.js, Redux, PostgreSQL, Docker.

Car Rental Management Dashboard (Frontend):
- Developed a React-based administrative dashboard for managing a car rental service.
- Built functionality for creating and editing fleet vehicles and managing vehicle-related information.
- Implemented an interactive timeline widget displaying vehicle availability, bookings, maintenance periods, and current operational status.
- Integrated the frontend with backend APIs and an external authentication and authorization service.
- Tech: React, ReactN, TypeScript, Formik.

Fullstack-розробник

from 05.2018 to 05.2020 (2 years)
DigitalSuits, Харків (IT)

Music Events Booking Service (Frontend):
- Developed frontend functionality for a platform that allowed clients to book artists and musicians for events.

Property Operations Platform (Frontend):
- Developed client-facing and administrative applications for managing property sales, purchase requests, sellers, buyers, and quotes.

Housing and Tenant Management Service (Full-stack):
- Developed frontend and backend functionality for a platform supporting communication and issue management between property owners and tenants.

Fullstack-розробник

from 10.2016 to 05.2018 (1 year 8 months)
Innotech company, Харків (IT)

Developed frontend interfaces and backend functionality using Ext JS, PHP, and MySQL

Knowledge and skills

  • CSS
  • HTML
  • JavaScript
  • Git
  • Bootstrap
  • React
  • Redux
  • Node.js
  • TypeScript
  • MySQL
  • GitHub
  • VS Code
  • Jest
  • Nest js
  • Next.js
  • Docker Compose
  • PostgreSQL
  • Redux Toolkit
  • Sequilize
  • TypeOrm
  • SASS
  • MongoDB
  • Tailwind CSS
  • Express.js

Language proficiencies

  • English — average
  • Ukrainian — fluent

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