I'm Polycarp Okock.

Production-grade frontend project demonstrating advanced state management with React 19, Redux Toolkit, and RTK Query. Features 10,000 seeded datasets for realistic pagination, debounced search, multi-criteria filtering, and form validation with Zod. Implements OpenAPI-first development with type generation. Comprehensive test coverage with Vitest and React Testing Library. Ideal for interview preparation and learning modern React patterns.

Enterprise-grade order processing system demonstrating advanced C++20 features, concurrent programming, and microservices architecture. Features lock-free data structures, thread pool patterns, binary protocol (TLV) design for high-performance communication, and optional Oracle database integration. Implements Strategy and Repository design patterns. Includes JNI bridge for Java interoperability, comprehensive GTest suite with sanitizers, and cross-platform support (Windows/Linux/WSL). Sub-millisecond latency, 1000+ ops/sec throughput.

Innovative home care platform powered by Nx monorepo with Next.js 14 App Router frontend, verified professional marketplace connecting families with vetted caregivers, and comprehensive admin analytics. Backend ecosystem includes Fastify verification microservice with Redis/BullMQ async job processing, Python FastAPI-powered DeepFace biometric authentication for professional verification, and PostgreSQL with Prisma ORM. Integrated with Google Cloud Vision for document OCR, Stripe for payments, SendGrid for notifications, Africa's Talking for SMS, Cloudinary for media management, and NextAuth 5 for authentication. Deployed to production with CapRover, GitHub Actions CI/CD, multi-stage Docker builds, and OpenTelemetry distributed tracing.

Manifest V3 Chrome/Chromium extension that automatically sleeps inactive tabs, reins in high-memory pages, and visualizes telemetry through a React dashboard. Ships with options UI, consent workflows, IndexedDB history, and an optional Playwright companion bridging CDP actions via native messaging. Chrome Web Store listing at https://chromewebstore.google.com/detail/bfgeeiahcekoeafnbjdacfdgbhehgneb with source on GitHub (https://github.com/deaspo/sleepy-tabs).

Enterprise-grade Node.js microservice for verifying Kenyan government documents (National IDs, Passports, KRA certificates, etc). Features asynchronous job processing with Redis/BullMQ, real OCR integration with Google Cloud Vision API, automated field extraction with AI, webhook notifications for verification results, and comprehensive RESTful API. Built with Fastify for high performance and scalability.

Self-hosted Python microservice for face recognition and biometric verification using DeepFace. Provides REST API for face matching, selfie verification, and identity confirmation with GPU/CPU flexibility. Integrated with verification service for document-to-selfie matching during identity verification workflows. Built with FastAPI and optimized for production deployment with comprehensive logging and error handling.

Comprehensive menu-driven statistics software powered by R, designed for ease of use by researchers and statisticians across Africa. Engineered complete VB.NET desktop application with advanced R.NET interoperability, specialized dialogs for agricultural and climate data analysis, SQLite data persistence, multi-language support (English/Swahili), professional CI/CD infrastructure, and Windows installer automation.

Automated Twitter bot posting hourly weather updates for multiple cities (Bratislava, Nairobi, Kisumu). Features multi-city support with staggered updates, weather alerts, forecast predictions, and containerized deployment. Built with OpenWeatherMap API integration, Twitter API v2, and automated CI/CD pipeline.

Modern, responsive business website for a premium wine bar and coffee shop in Trnava, Slovakia. Features mobile-first design, smooth animations, interactive elements with sticky navigation, and integrated contact forms. Built with custom PHP backend, MySQL database, and modern frontend technologies.

Sophisticated web automation platform powered by Azure OpenAI API for intelligent browser control and analysis. Features natural language task execution, session recording with rrweb, performance analysis, and React TypeScript dashboard. Built with Playwright for reliable browser automation and Express.js backend.

Advanced Kedro pipeline architecture for AI-driven synthetic data generation through intelligent web interactions. Combines LLM decision-making with FastAPI web dashboard, session recording, and both automated and script-based modes. Built with Python data science stack and modern web technologies.

Native Android application for streaming Kenyan radio stations with seamless Google Cast integration. Features background playback, ExoPlayer media engine, Material Design 3 UI, and intelligent web scraping for station data. Built with modern Kotlin architecture and follows Android best practices.