I ship software end-to-end.

A product of my own, on its own domain and in public beta. 556 tests in CI.

• Next.js 15
• TypeScript
• Supabase (Postgres + RLS + Auth)
• Stripe
• Google Gemini
• Cloudflare Turnstile
• Resend
• @react-pdf/renderer + pdf-lib
• Vitest
• GitHub Actions

• Write a quote, the customer accepts it from a public link without an account, it becomes an invoice, and the VAT period is ready for Skatteverket — with ROT/RUT modelled in.
• Tenant isolation enforced in Postgres by row-level security rather than in the application layer.
• 556 Vitest tests behind a GitHub Actions pipeline running tsc → lint → tests → build.

Client site for a Stockholm electrician, built for local search. Plain HTML, CSS and JS with zero dependencies.

• HTML
• CSS
• JavaScript
• SEO
• Schema.org
• Vercel
• Web3Forms

• Designed and built alone for a licensed electrician in Stockholm, live on the company's own domain.
• No framework, no build step, no dependencies: ~690 lines of markup, ~820 of CSS on design tokens, ~340 of JavaScript.
• Local search was the point: schema.org Electrician JSON-LD with address, geo, opening hours and services, linked to the Google Business Profile.

11 games, ~13k lines, no game framework. Deployed on AWS with Terraform.

• Next.js
• TypeScript
• HTML5 Canvas
• Web Audio
• Groq (Llama 3.3)
• Redis
• AWS EC2 + Terraform

• 11 arcade games hand-built from scratch on Canvas (Pac-Man ghost AI, Tetris, Asteroids physics) — ~13k lines, no game framework.
• Server-side AI hint system via the Groq API with the secret key kept off the client.
• Infrastructure-as-code deployment (Terraform, nginx, systemd) on AWS EC2 with a Redis-backed global leaderboard.

Built to a real brief from a Stockholm nail studio losing bookings in Instagram DMs.

• Next.js 16 (App Router)
• React 19
• TypeScript
• Supabase (Postgres + RLS + Auth)
• Tailwind v4
• date-fns-tz
• Nodemailer → Resend
• next-intl
• Vitest

• Built to a real brief from a one-person Stockholm nail studio that was handling appointments over Instagram DMs; deployed and live.
• Double-booking is impossible by construction — a GiST exclusion constraint over a tstzrange rejects overlapping confirmed bookings.
• Availability is derived on request from working hours minus time off minus bookings, in salon-local time, with DST covered by tests.

Full e-commerce with Stripe checkout that cannot double-charge.

• Next.js 16
• TypeScript
• Express 5
• MongoDB Atlas + Mongoose
• Stripe
• Cloudinary
• JWT (httpOnly)

• A Next.js frontend on Vercel against an Express 5 REST API on Render — the frontend holds no database access at all.
• Checkout runs inside a MongoDB transaction and is idempotent on the Stripe payment id, so a duplicate resolves instead of charging twice.
• The cart is priced on the server from stored prices; the JWT lives in an httpOnly cookie behind bcrypt and rate-limited auth endpoints.

Async FastAPI wrapper with TTL caching, under pytest.

• FastAPI
• Pydantic
• httpx (async)
• TTL cache
• pytest

• Clean API wrapper around Swedish airport flight data, hiding the upstream key and using TTL caching to cut downstream calls.
• One service layer powering a REST API, a CLI tool, and an interactive terminal menu.
• Full pytest suite with the external API mocked — tests run with no network dependency.