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Work experience

Fullstack-розробник

from 04.2025 to now (1 year 4 months)
Idea GIC s.r.o., Дистанційно (IT)

Project 1: FindOut Marketplace (https://fdout.pl)
A high-traffic, SEO-critical services and expert directory serving Poland and Czechia (multi-domain, 4 locales, large-scale SSR catalog).

- Led FSD migration of the core client-facing platform to Next.js App Router, establishing strict import boundaries and code reusability.
- Engineered SEO-first SSR architecture supporting dynamic XML sitemaps, automated hreflang annotations, JSON-LD structured data, and dynamic Open Graph (OG) metadata, achieving a 92/100 production SEO score.
- Optimized Core Web Vitals using Lighthouse CI in automated check pipelines, reducing homepage TTFB by 91% (from 3.7s to 344ms), FCP by 54%, and TBT by 52%.
- Implemented Stripe Pro subscriptions, checkout payment flows, Google OAuth, Telegram Login, and Twilio OTP for expert contact reveal.
- Developed core product features, including expert search directory, review mechanisms, referral campaigns, and ElevenLabs Voice AI agents with OpenAI-driven lead extraction.
- Modernized admin panel modules (categories, professions, moderation) using FSD and TanStack Query, implementing URL-based Role-Based Access Control (RBAC).

Fullstack-розробник

from 04.2025 to now (1 year 4 months)
Idea GIC s.r.o., Дистанційно (IT)

Project 2: NeuroDebate AI SaaS (https://neurodebate.io)
An AI answer-verification platform delivering scored verdicts (0-100%) through automated multi-model debates and fact-checking.
- Developed the front-end client (Next.js, React 19, shadcn/ui) featuring a highly complex, interactive editor for structuring multi-stage AI debates (up to 10 stages) across 4 parallel AI roles.
- Implemented a JWT-authenticated Server-Sent Events (SSE) client streaming live debate exchanges, single/compare chats, and real-time model key health indicators.
- Engineered a performance-optimized SSE connection lifecycle containing local-storage tab synchronization (preventing duplicated connections and 429 errors), idle state detection, and jittered reconnect backoffs.
- Integrated multi-provider LLM stack (DeepSeek, Gemini, Meta, Mistral, NVIDIA, Qwen, OpenAI) via admin provider/model/API-key management with role-based routing and failover.
- Collaborated on NestJS DB-backed provider gateway: multi-account API keys, role-based routing (main → backup → last_resort), health scoring, cooldowns, and audit/request logging (ai_request_logs) using database-level constraints.
- Built administrative panels for real-time model configuration (CRUD), key health stream monitoring, and templates management integrated with AWS S3 asset uploads.

Fullstack-розробник

from 04.2025 to now (1 year 4 months)
Idea GIC s.r.o., Дистанційно (IT)

Project 3: DOM Community Hub (https://dom.community)

A unified membership platform and ecosystem for expats aggregating standalone services across security (VPN), finance (e-wallet), adaptation (marketplace), and leisure (media) — Amnezia VPN, FindOUT, Dom.Show, Capitalist.

- Shipped a 3-app product suite composed of a Next.js public client (FSD), a React Admin + MUI back-office dashboard, and a modular NestJS API.
- Developed a centralized catalog and service landing pages, utilizing secure SSO handoff tokens to authenticate users seamlessly into external service platforms.
- Designed and built NestJS modules leveraging Drizzle ORM, Repository Pattern, and Swagger/OpenAPI, maintaining strict isolation between public and administrative endpoints.
- Designed a complete public review engine incorporating user likes/dislikes, atomic counter updates, and a denormalized popularity-scoring algorithm.
- Implemented email/password and Google OAuth workflows backed by rotating JWT refresh tokens stored in httpOnly cookies, featuring multi-tab state sync.
- Engineered an asynchronous media pipeline compressing user uploads on-the-fly to WebP via Sharp before writing to AWS S3.
- Integrated a closed-loop user session funnel with Discord/Telegram webhook integrations for real-time team operational alerts.

Fullstack-розробник

from 01.2025 to 03.2025 (3 months)
Fernir LLC, Дистанційно (IT)

- Built a fully responsive production-ready SaaS boilerplate using Next.js (App Router), TypeScript, Tailwind CSS, shadcn/ui, Drizzle ORM, PostgreSQL, and Next.js Server Actions.
- Integrated Stripe payments (subscription flows) and Plaid SDK for high-value bank payment processing.
- Architected type-safe database schemas and API endpoints leveraging Drizzle ORM and Zod validations, achieving end-to-end type safety without a separate backend service.
- Implemented WCAG 2.2 accessible UI components and established a Playwright end-to-end test suite, achieving 80%+ coverage of business-critical user flows.
- Implemented real-time user notification streams using WebSockets.

Education

Університет імені Альфреда Нобеля

Право, Дніпро
Higher, from 2016 to 2017 (1 year)

Національна металургічна академія України

Економіка підприємства, Дніпро
Higher, from 2004 to 2006 (2 years)

Харківський національний університет радіоелектроніки

Інформаційні мережі зв'язку, Харків
Higher, from 1998 to 2003 (5 years)

Additional education and certificates

GoIt Fullstack Developer

2022-2023
Certificate

SoftServe Academy, Practical React

2024, 3 місяці
Certificate

SoftServe Academy, Frontend project-based learning

2024, 1 місяць
Certificate

Knowledge and skills

• HTML
• CSS
• JavaScript
• SASS
• Git
• React
• Redux
• REST API
• Next.js
• TypeScript
• Node.js
• Express.js
• PostgreSQL
• MongoDB
• Tailwind CSS
• Redux Toolkit
• Firebase
• Supabase
• NestJS
• Zustand
• TanStack Query
• RTK Query
• Mongoose
• Prisma
• TypeORM
• Sequelize
• Docker
• Context API
• Jest
• Vite.js
• React testing library

Language proficiencies

• English — average
• German — beginner