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.

Łukasz Kliś

Build reliable software, faster.

Helping startups, SaaS companies, and product teams ship faster with clear strategy, solid engineering, and no-code efficiency.

✓ Ship faster, stay reliable
✓ Clear communication
✓ Real-world resilience
✓ From prototype to scale

Let’s talk Explore services

What I Offer

Software Engineering

From MVPs to scaling platforms, I build reliable, maintainable software that supports your business outcomes.

IT consulting & Technical strategy

Audits, architecture reviews, and practical guidance to make confident technical decisions fast.

Product support & Iteration

Ongoing development to ship improvements quickly—fast iteration without the chaos.

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.

Modern Stacks for Scalable, Maintainable Software

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 & OPS

Playwright
Vitest
Docker
CI/CD

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

I’m a software engineer and consultant helping startups and product teams move fast with reliable software. My experience spans SaaS, fintech, e-commerce, and early-stage startups — environments where speed and reliability must coexist.

Learn more

Whether you’re building something new or scaling an existing system, I help product teams move quickly without sacrificing reliability.

Let’s Shape What’s Next — Together

Tell me about your goals and constraints.
I’ll respond with clear next steps and a practical approach.

Book a call or Email me instead