Full-Stack Engineer & Problem Solver
Building scalable systems that bridge technical complexity with intuitive user experiences. Focused on high-performance web applications and the future of AI-driven development.
PastArchitected and shipped digital products for 100k+ users. Led full-stack development for high-load media ecosystems, AI voice platforms, and creative automation tools. Focused on the transition from legacy architectures to modern, containerized stacks that prioritize speed and cost-efficiency.
NowBridging the gap between LLMs and deterministic code. Standardizing AI-driven workflows to eliminate developer friction. Optimizing the backend layer-refining database indexing, caching strategies, and the ergonomics of high-performance web systems.
About
7+ commercial products shipped. 100K+ users reached. 40% load time reduction. From AI voice apps to high-traffic video platforms — I build systems that perform under real conditions, not just in demos.
I own features end-to-end — API design, React or React Native UI, AWS infrastructure — and make sure everything holds up under real traffic. Currently focused on AI-native product architecture: streaming LLM systems, retrieval-augmented generation, and performance-optimized interfaces where intelligence enhances interaction in real time.
Based in Sangerhausen, Germany with full working rights. Looking for a team that ships fast, cares about quality, and builds products people actually use. Open to on-site, hybrid, or remote across Germany.
2+ Years
Commercial Experience
7+
Apps Delivered
100K+
Users Reached
M.Sc.
Computer Engineering
Tech Stack
Streaming LLM integrations (OpenAI, Groq...)·Voice AI (STT/TTS, ElevenLabs)·RAG pipelines·Prompt engineering & context design
React·Next.js·TypeScript·Tailwind CSS·TanStack Query·Zustand·Three.js·WebSockets·SEO
Node.js·Nest.js·PostgreSQL·Redis·MongoDB·Kafka·GraphQL·Microservices·Stripe
React Native·Expo·Deep Linking·Push Notifications·In-App Purchases·Ionic
AWS (S3, Lambda, RDS)·Docker·GitHub Actions·Cloudflare·Nginx·Sentry·GA4·Amplitude·Playwright·Jest·Meta ADs
Career
Kevych Solutions
02/2024 — Present · Lviv, Ukraine (Remote)
Certifications
Impact
0+
Features Delivered
From ticket to production
0%
Cost reduction
Infrastructure savings
0%
Performance gain
E-commerce LCP / CLS
0+
Paid subscriptions
Acquired in 6 hours
0
0 → 1 Products
From idea to production
0
Mentees hired
Thrown into deep water
Education
Master in Computer Engineering
Ternopil Ivan Puluj National Technical University, Anabin H+
09/2024 — 01/2026
Bachelor of Computer Engineering
Ternopil Ivan Puluj National Technical University, Anabin H+
09/2022 — 06/2024
Bachelor of Artificial Intelligence (Interrupted)
Technical University of Kosice, Anabin H+
09/2022 — 01/2023
Professional Junior Bachelor's degree
Ternopil State Ivan Pul'uj' Technical College, Anabin H+/-
09/2018 — 06/2022
Work
A selection of commercial products I've built and shipped.
Helped evolve the platform from no-code constraints to a scalable cloud-based architecture supporting 70,000+ users. Engineered core monetization systems including internal wallet infrastructure, Stripe & PayPal integrations, payout automation logic, backend services, analytics pipelines, and AI-driven internal tools.
Architected and delivered a production-ready full-stack platform enabling real-time voice consultations, with encrypted audio storage on AWS S3 and AI-powered guidance powered by OpenAI via custom prompt-engineered pipelines. Led the SDLC as Tech Lead, driving architectural decisions, overseeing delivery, and mentoring a junior engineer.
Owned mentorship and technical guidance for 6 interns, conducting thorough code reviews and providing actionable feedback to accelerate their growth. Drove launch readiness by stabilizing new features, and supporting deployment processes. 3 mentees were successfully hired as full-time engineers.
Subscription-based learning platform that handled 2,000+ users and 700+ paid subscriptions in just 6 hours after launch. Achieved through optimized DB indexing and caching strategies. Custom NestJS APIs and Stripe integration for seamless payments.
Built a production-grade server-side video rendering engine powering a Canva-like design platform. Executed client-side React animations through Puppeteer, orchestrated by Express and Nginx, and exposed a resilient polling API ensuring reliable MP4 exports under high-load conditions.
Assisted in developing marketplace features connecting brands with vetted local communities (run clubs, pilates collectives, studios), enabling authentic partnerships. Quickly onboarded into the codebase and supported feature delivery under tight deadlines during a short-term engagement.
Delivered a full platform refactor, improving code maintainability, scalability, and overall performance. Re-architected the signup flow by optimizing validation logic, reducing friction points, and streamlining user onboarding — resulting in increased conversion rates and improved system reliability.
Migrated a legacy React SPA to Next.js. Improved Core Web Vitals (LCP/CLS) by 40% and reduced hosting costs by 17% through Docker containerization. Mentored a junior engineer on Next.js best practices and performance optimization.
The site you're looking at. Built with Next.js 15, Three.js, Framer Motion, Tailwind CSS v4, and next-intl for EN/DE i18n. Includes an OpenAI-powered chat assistant with RAG, a voice interface with STT/TTS, and a cookie-consent-aware analytics setup.
Open to on-site, hybrid, or remote across the world