Software Engineering
From MVPs to scaling platforms, I build reliable, maintainable software that supports your business outcomes.
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Łukasz Kliś
Build what matters, faster.
Helping startups and product teams move fast with reliable software, clear strategy, and engineering built to last.
services
What I Build
process
From Idea to Reliable Software
Understand
Clarify goals, constraints, and context.
Plan
Trace a pragmatic path with measurable milestones.
Build
Ship high-leverage work in tight feedback loops.
Deliver
Handover, monitor, and support in production.
tech
Stack I Ship With
I choose tools that balance speed today with maintainability tomorrow, so your product grows sustainably.
Frontend
- Astro
- Next.js
- React
- TypeScript
Backend & Data
- Node.js
- Python
- PostgreSQL
- Redis
Quality
- Playwright
- Vitest
- Linting
- Formatting
OPS
- Docker
- CI/CD
- Monitoring
- Logging
Trusted by Startups and Product Teams
I've worked with SaaS, fintech, e-commerce, and early-stage startups — environments where speed and reliability must coexist. Clients trust me to deliver pragmatic solutions that balance fast iteration with long-term maintainability.
Selected collaborations with startups in SaaS, fintech, and e-commerce.
Frequently Asked Questions
What’s your typical engagement model?
Project-based scopes or part-time retainers for ongoing work. I adapt to your team’s tools and cadence.
Which stacks do you work with?
Modern TypeScript/JavaScript stacks on the web: Astro, React/Next.js on the frontend; Node.js, Python, and PostgreSQL on the backend.
How fast can we start?
After a quick discovery call and scope outline, I can usually start within 1–2 weeks.
Do you work with early-stage startups?
Yes — many clients are pre- or post-product-market-fit, moving quickly and iterating in-market.
Do you also provide ongoing support after launch?
Yes — I offer iteration and support retainers to keep your product reliable and continuously improving.
How do you work with teams that already have developers?
I can integrate seamlessly with your existing team, adding bandwidth and technical clarity without overhead.
About Łukasz Kliś
Software engineer and consultant helping startups move fast with reliable, scalable systems.
You bring the product vision. I bring the engineering to make it real.
get in touch
Let's Talk About Your Next Step
Tell me about your goals and constraints.
I'll respond with a clear plan and a practical approach.