Available for remote B2B contracts

Łukasz Głowacz

Full Stack Builder · AI-First Delivery

I design and build production systems end-to-end — architecture, integrations, CI/CD, deployment — solo, at the velocity of a team. Running Gurudo, an independent software consultancy. Startups and founders get a system that ships, not a backlog of tickets.

Featured work Download CV
0k+
Active users
Enterprise platform · current NDA contract
0+
Years enterprise B2B
Remote contracts · Next.js · React · TypeScript
0
Payment systems
Tpay (cards · BLIK · transfers) + Stripe billing
AI
First. Every stage.
Claude Code · GitHub Copilot · architecture to production

— HIGHLIGHTS

Ships autonomously

Takes a feature from Figma to deployed production without micromanagement. Full ownership: design handoff → build → test → staging → live.

Fixes what's broken

Fixed broken premium purchase flow on production (Tpay mapping bug). Resolved null-token pagination loop causing duplicate data. Tracked non-obvious React Query stale state bug.

Integrates any system

JWT SSO with external microservices, Stripe per-seat billing with webhooks, Tpay (cards, BLIK, transfers), Google Maps API — production grade.

Builds AI-first, end-to-end

Claude Code and GitHub Copilot aren't shortcuts — they're force multipliers at every stage: architecture validation, implementation velocity, root cause analysis. One developer. Team output.

— AI-FIRST METHODOLOGY

How I deliver like a team, solo

AI is not a shortcut — it's a force multiplier across every stage of delivery. The result: a SaaS from idea to paying customers, and an enterprise platform with thousands of active users — both built and maintained by a single developer. This is not a workflow. It is a new model of building software.

// 01

System Design First

Every project starts with architecture — data flow, API contracts, component boundaries, trade-offs. AI accelerates research and validates decisions before a line of code is written.

// 02

Build & Ship

Feature delivery, third-party integrations, payment systems, SSO, real-time data — compressed to days not weeks. Quality and architecture are non-negotiable.

// 03

Debug & Iterate

Production incidents diagnosed fast. React Query edge cases, TypeScript constraints, race conditions — AI-assisted root cause analysis on every non-trivial problem.

// tools Claude Code GitHub Copilot architecture → production

— WORK & PROJECTS

Production Software

From enterprise platforms to self-funded SaaS — production code with real users and real business impact.

— TECHNICAL SKILLS

Full-Stack Depth

Frontend-focused, with the backend depth to ship end-to-end features and integrate external services independently.

// 01

Frontend

  • Next.js 14 — App Router, Server Components, Middleware, i18n routing
  • React 18 + TypeScript — hooks, custom hooks, component architecture
  • Tailwind CSS — responsive design, mobile-first, breakpoint debugging
  • React Query — server state, infinite scroll, batch fetching, cache management
  • Zustand — client state management
  • NextAuth.js — JWT + OAuth 2.0, session-aware middleware routing
  • React Hook Form + Yup — conditional validation, auth-aware forms
  • next-intl — i18n in 4 languages (pl/en/de/uk-UA)
  • Framer Motion — animations, modals, page transitions
  • Figma → code — daily design-to-code workflow

// 02

Backend & Integrations

  • FastAPI — async ASGI, Pydantic validation, Depends() DI, StreamingResponse SSE
  • Django 3.2 + DRF — REST APIs, serializers, permissions, throttling
  • Python 3.11 — async patterns, task queues, mypy --strict type safety
  • PostgreSQL — relational data modelling, ORM queries
  • Celery + Redis — distributed task queue, async emails, periodic tasks
  • JWT SSO — microservice integration, token generation, TTL management
  • Tpay API — cards, BLIK, bank transfers, product name mapping
  • Stripe API — per-seat billing, webhooks, subscription management
  • Streaming APIs — Server-Sent Events, real-time response delivery
  • pytest — unit and integration tests

// 03

Tooling & DevOps

  • GitHub Actions — CI/CD pipelines, ci.yml authoring, automated testing
  • Vercel — staging and production deploy hooks, branch deployments
  • Docker Compose — local dev environments, multi-service setup
  • Jira — agile workflow, sprint planning, ticket tracking
  • Git — conventional commits, PR templates, branch strategy
  • Figma — component inspection, design token extraction, asset export
  • Claude Code — AI-assisted development (certified)
  • ESLint + Prettier + flake8 — code quality, linting configuration
  • mypy --strict — production-grade Python type safety
  • Vitest / Jest / pytest — unit, component, and integration testing

// 04

AI & LLM Integration

  • RAG Architecture — retrieval-augmented generation, end-to-end pipeline design
  • Claude API — streaming responses, SSE integration, system prompt engineering
  • OpenAI Embeddings — text-embedding-3-small, multilingual semantic search
  • Vector Search — cosine similarity, NumPy vectorized operations, in-memory store
  • Document Processing — chunking with overlap, auto-ingestion, source tracking
  • Prompt Engineering — context window management, hallucination prevention, language control
  • LLM Streaming — SSE generator pipeline, real-time token delivery, frontend parser