An architect who writes code
I'm Bartosz — a senior full-stack developer and architect with around 10 years of experience. I run my own company and deliver B2B projects: from websites and stores to platforms, AI and automation.
Custom software development — B2B, Poland & EU
I started with front-end and client websites, then went through the full stack: Node.js and Python backends, databases, infrastructure and DevOps. As a team leader I was responsible for the team, code review and architectural decisions on commercial projects.
Today I bring these skills together in one place: I design the system, write its key parts and make sure it is fast, measurable and maintainable after I leave.
How we design systems end-to-end
How we work
Measure, then optimise
Every decision has a before and after metric.
Decisions in writing
ADRs and docs instead of tribal knowledge.
Simple and secure
The simplest solution that meets the requirements.
Code belongs to the client
Repository, access and infrastructure on your side.
Who we work with
Technical partner from MVP to SaaS platform
We work with startups and scale-ups that need an experienced technical partner: building an MVP, designing SaaS architecture or scaling a platform under growing traffic. Working code from the first sprint, no lengthy onboarding.
Senior support, code review & architecture
Software houses and agencies engage us when a senior is missing: system architecture, code review, front-end refactoring or full-stack work. We join your existing team as an external expert — no weeks of ramp-up.
Code audit & refactoring without rewriting
Companies with a slow website, a WooCommerce store needing optimisation or an app inherited from a previous contractor get a code audit with a concrete fix plan — instead of a costly full rewrite from scratch.
RAG, agents & B2B process automation
Businesses integrating AI into specific processes — a company document assistant (RAG), a query-handling agent, automated data flow between systems (ERP, CRM, API) — get a proof of concept with cost control before any production commitment.
Technologies and tools
Frontend
- React
- Next.js
- Astro
- Vue
- TypeScript
- Tailwind
Backend
- Node.js
- NestJS
- Python
- FastAPI
- Go
- PHP
Commerce & CMS
- WooCommerce
- WordPress
- Stripe
- n8n
Data & AI
- PostgreSQL
- Redis
- Claude
- Ollama
- LangChain
Infra & Ops
- Docker
- Kubernetes
- OpenShift
- Grafana
- Prometheus
- GH Actions
- Cloudflare
- Vercel
Get in touch with nightdev
Describe it in 2 minutes. I'll reply within 24 hours with first insights and a proposed next step.