From idea to production — in weeks, not months.
If your dev team is too slow, too expensive, or simply doesn't exist — I deliver. Scalable B2B apps, e-commerce, CMS, PWA and AI automations. 3+ years commercial experience, 20+ shipped projects, 0 missed deadlines.
Web Applications
I build modern SPA, PWA, CMS, and e-commerce applications. High-performance, responsive interfaces built with Angular, React, or Next.js that power your business processes.
Backend & API
I architect scalable backend systems with Symfony and Node.js. REST APIs, third-party integrations, database optimization, and zero-downtime production environments.
Automation & AI
I automate repetitive processes using n8n, Make, and LLM integrations. Lead scoring, document generation, intelligent workflows that save your team hours every week.
Consulting & Audit
I perform code reviews, performance audits, and architecture assessments. I help with legacy system migrations, optimization, and selecting the right tech stack.
Solo-founder track record
2 SaaS products taken from idea to production solo (KorepAI, NullQuest) — product, design, code, infra, marketing.
Clean, tested code
Design patterns, SOLID, testing (TDD/BDD, code review) — code that's maintainable and easy to hand over.
Transparent communication
Regular demos, progress reports, proactive risk communication.
AI-augmented dev
Claude API (multi-model routing Haiku/Sonnet), Vercel AI SDK, ElevenLabs TTS, Web Speech STT — full voice pipelines in production.
Full SaaS infrastructure
Stripe (subscriptions, webhooks, idempotency), Supabase Auth + RLS, Resend + DKIM/SPF/DMARC, Cloudflare DNS/CDN/Email Routing.
Business value focus
Every technical decision serves business goals, not trends.
Analysis & Discovery
I thoroughly understand your business needs, analyze requirements, and define the project scope. Together, we establish goals, KPIs, and expected outcomes.
Design & Architecture
I create the technical architecture, prototypes, and implementation plan. I select the optimal tech stack and present the proposed solution for approval.
Implementation & Iterations
I deliver the project in short sprints with regular demos. Clean code, code reviews, and testing at every stage — you have full visibility into progress.
Deployment & Support
I handle production deployment, CI/CD setup, and monitoring. After launch, I provide ongoing technical support and application maintenance.
KorepAI — AI-powered exam prep platform
Polish high-schoolers preparing for the matura exam need affordable access to mock papers, mandatory readings and oral exam practice — at a price point real students can pay.
AI-generated mock exam papers, oral exam simulator with full voice pipeline (Web Speech STT → Claude → ElevenLabs TTS), 26 mandatory readings. Stripe + webhooks with idempotency, Supabase Auth with RLS, Resend + DKIM/SPF/DMARC.
Subscription 39 PLN/month. Marketing on TikTok/Instagram + ManyChat funnels. Live in production with real paying users.
NullQuest — Duolingo for developers
Learning to code is dry — most platforms lack the retention loops and progression mechanics that keep RPG players coming back.
RPG-style platform with character classes (Backend Warrior, Frontend Mage, Data Wizard), XP system, Boss Fights with timers, factions, skill trees, lives system. Multi-model Claude API routing: Haiku 4.5 (cheap) vs Sonnet 4.6 (complex).
5 programming languages (JS/TS/SQL/Python/DevOps), bilingual EN/PL, free model. AI-generated quests with app-side LLM output validation.
PWA ordering app for pizza chain
A national pizza chain needed a fast, mobile ordering app to replace an outdated system, with offline support.
A PWA with full ordering capabilities, POS and receipt printer integration, running smoothly on any device.
Online orders +~35%, fulfillment time down, 200+ outlets in the network.
Let's talk.
Have a project idea, need technical support, or want to automate processes in your business? Get in touch — I'm happy to discuss your needs and propose a solution. Reply within 24h.
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