Software Engineer & IT Consultant
Łukasz
Kliś
Helping startups and product companies turn ideas into working software — fast, without sacrificing quality.
Move fast.
Build right.
I partner with startups and companies to deliver pragmatic software that moves business forward. Speed balanced with long-term quality and reliability. I bridge the gap between product goals and engineering execution.
What I Build
Services
Software Engineering
End-to-end development of web and software solutions. From MVPs to scaling platforms, I deliver clean, maintainable code that supports business growth.
IT Consulting & Technical Strategy
Helping you make the right technical decisions — from architecture reviews to stack selection — so technology supports long-term goals, not slows them down.
Product Support & Iteration
Working closely with product teams and founders to rapidly test, validate, and improve features. Fast iterations without the chaos.
Clients
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.
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
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.
How I Think
Values
Business-first
Technology exists to serve the product and the company's goals, not the other way around.
Speed & quality
Iterate quickly while keeping engineering standards high and codebases maintainable.
Clarity
Transparent communication, plain terms, and alignment between product and tech.
Simplicity
Lean, focused solutions instead of bloated, over-engineered systems.
Reliability
Build solutions that can be trusted — stable today, adaptable tomorrow.
Ownership
Proactivity, accountability, and commitment to the outcome.
Why me
What Sets Me Apart
Business-first engineer
I see code as a tool to achieve product outcomes, not as an end in itself.
Fast & iterative
I ship quickly, but never at the expense of quality.
Clear communication
I bridge the gap between founders, product managers, and engineers.
Solo consultant advantage
You work directly with me — no layers, no outsourcing.
Proven experience
Strong background across SaaS, fintech, startups, and e-commerce.
Committed to the outcome
Your goals are my deliverables — I stay accountable until they're met.
Let's build
something
great.
You bring the product vision. I bring the engineering to make it real.