Work Experience
CGP Systems s.r.o.
Frontend Developer
Developing functional web applications for European clients. Integrating AI features (Gemini, Imagen), improving frontend architecture, and implementing reusable UI patterns.
- Delivered feature-rich websites and web applications for European clients
- Built responsive, interactive UIs with modern JavaScript frameworks and libraries
- Improved frontend architecture for maintainability and performance
- Collaborated with designers to deliver pixel-perfect UI from Figma
- Implemented reusable UI patterns to speed up feature delivery
- Built AI-powered features for client-facing products and internal tools
Sem Bus
Frontend Developer
Developed a booking portal with real-time seat tracking. Created a dispatcher admin panel, reducing manual work by 30%. Integrated PDF tickets and LiqPay.
- Led frontend for a public booking portal with real-time seat tracking
- Built dispatcher admin panel using React/Redux, reducing manual operations by 30%
- Integrated PDF ticketing and payment systems (LiqPay)
- Designed conflict-free booking flow with real-time seat locks
- Delivered driver ticket scanning flow at boarding
- Built flexible dispatcher tooling for daily operations
Paril Tech
Frontend Developer
Developed a detailed High-load casino platform (100K+ users). WebSockets with <100ms latency, 15+ games with animations, complex bet slips, and automated payment processing.
- Developed high-traffic casino and sportsbook platforms
- Built real-time odds feeds and bet slip interfaces
- Created admin analytics dashboards with WebSocket updates
- Delivered complex bet slip UI with real-time price changes
- Built animated casino visuals for virtual tables
- Implemented live table animation states for betting and results
- Optimized real-time odds updates to stay stable under load
Case Studies
High-Load Betting Platform
Enterprise-grade betting platform serving 100K+ concurrent users with sub-100ms WebSocket latency, real-time odds feeds, immersive casino experiences with animated visuals, and automated payment processing.
Sem-Bus Transport System
Complete bus transport management platform featuring real-time seat tracking with live Firebase sync, interactive seat maps, automated PDF ticket generation with QR codes, LiqPay payment integration, and comprehensive dispatcher control panel.
Tokens2Paid
Enterprise-grade AI cost intelligence platform that aggregates usage across 15+ providers, detects spending anomalies in real-time, tracks financial data via Plaid integration, and delivers smart optimization recommendations with automated budget alerting.
Comprehensive HR Platform
Full-cycle applicant tracking system with visual Kanban pipelines, AI-powered candidate evaluation and automated interviews, integrated Twilio voice calling, training and certification management, automated payout processing, and real-time analytics dashboard.
Product results across architecture, realtime UX, and automated operations
These pillars cover how I help teams ship dependable product experiences: solid foundations, realtime stability, and automation that keeps headcount lean.
Frontend Architecture
Designing React 19 and Vite platforms with reusable component systems and strict type safety.
- React 19 + TypeScript foundations for scale
- Design systems and design-to-dev handoff
- 90+ Lighthouse performance targets
Real-time Platforms
Building WebSocket-driven experiences with sub-100ms latency and fault tolerance for 100K users.
- WebSockets and Socket.IO under 100ms latency
- State sync with Redux Toolkit and TanStack Query
- Observability and dashboards for 100K DAU
AI & Automation
Integrating Gemini, Imagen, Plaid, and automation flows to augment product capabilities and operations.
- Gemini and Imagen for content generation
- Plaid, Stripe, LiqPay payment automations
- Ops tooling that cuts manual steps by 30%
Stack I rely on
Tools I bring into engagements from day one — the mix that keeps delivery predictable and the UI layer sharp.
React 19
TypeScript 5+
Next.js
Node.js
Redux Toolkit
TanStack Query
PostgreSQL
Express
Firebase
Docker
Vite
Tailwind CSS
shadcn/ui
WebSockets
Stripe
Vue/Nuxt
Zustand
React Hook Form
Google Gemini
Imagen
Git
Postman
Mapbox GL
Google Maps
LiqPay
Plaid
Automations
Key Achievements
Scaled betting and gaming platforms with 99.9% uptime and resilient WebSocket infrastructure.
Refined state orchestration and caching, accelerating mission critical workflows for bettors.
Introduced smarter queries and caching for transport systems, improving booking conversion.
Connected Gemini 2.5, Imagen 3.0, and Plaid APIs to automate analytics and customer experiences.
Created shared UI libraries used across five projects, cutting feature delivery time by 25%.
Achieved 90+ Lighthouse performance scores with code splitting, lazy loading, and fine-grained tuning.