Олег

OLEH VOROBETS
MIDDLE FULL-STACK DEVELOPER
Lviv, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
LinkedIn: [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Middle Full-Stack Developer with 2.5 years of commercial experience building web and cross-platform mobile applications
with TypeScript, React, Next.js, Node.js, NestJS, and React Native. Experienced in end-to-end feature delivery, backend
design, monorepos, payments, AI integrations, and real-time systems. Focused on maintainable code, APIs, testing, and
cross-functional collaboration.

TECHNICAL SKILLS
Languages: TypeScript, JavaScript, SQL, HTML, CSS
Frontend: React, Next.js App Router, TanStack Query, Zustand, React Hook Form, Zod, Tailwind CSS, Material UI, shadcn/ui
Mobile & Backend: React Native, Node.js, NestJS, Express, GraphQL, REST APIs, Socket.IO, Swagger
Databases & Architecture: PostgreSQL, Redis, BullMQ, TypeORM, Prisma, microservices, RabbitMQ, Nx monorepo
Cloud & Integrations: AWS, Stripe, Firebase, ElevenLabs, SendGrid
Testing & Tools: Vitest, Jest, Sentry, OpenTelemetry, Amplitude, Mixpanel, Git, ESLint, Prettier, Husky, Claude Code, Cursor

PROFESSIONAL EXPERIENCE
Full-Stack Engineer | Kevych Solutions Mar 2025 - Present
• Set up an Nx monorepo from scratch, structuring two Next.js applications and a shared component library.
• Delivered full-stack product features across React/Next.js frontends and Node.js/NestJS backends.
• Built event-management administration for check-ins, generated questions, groups, chat, analytics, data collection, and
role-based access.
• Implemented Stripe payment and subscription flows for ticket checkout, Shopify-embeddable ticketing, memberships,
billing, cancellations, discounts, and promo codes.
• Developed customer-facing experiences including landing pages, event feeds, event details, profiles, blogs, registration,
and responsive layouts.
• Built a NestJS backend from scratch using hexagonal architecture with 16+ domain modules designed for maintainability
and independent testing.
• Created AI-powered chatbots with real-time streaming, chat history, usage limits, AI-generated daily plans, and
ElevenLabs text-to-speech.
Node.js Backend Developer | IQONEX GmbH May 2024 - Jan 2025
• Developed authentication and authorization features including third-party sign-in, PDF reading and storage, and
real-time web/mobile communication.
• Implemented Stripe payment processing and supported end-to-end payment workflows.
• Integrated Google Analytics with UTM tracking to support application metrics and attribution.
• Supported deployments and production stability across the application release lifecycle.

EDUCATION
Bachelor’s Degree in Software Engineering | Lviv Polytechnic National University | 2022–2026

LANGUAGES
English: B2 (Upper-Intermediate) | Ukrainian: Native

CERTIFICATIONS
Microsoft Certified: Azure Fundamentals (Apr 2025) | React Native – The Practical Guide (Mar 2025)
The Ultimate React Course (Dec 2024) | Build Responsive Real-World Websites (May 2024)
NestJS: The Complete Developer’s Guide (May 2024) | The Complete SQL Bootcamp (May 2024)
Node.js, Express, MongoDB & More (Jan 2024)