You run the business.
We build the product.
Outgrown no-code, or never hired developers? We build your product end to end and take it live: architecture, build, and launch. A senior team using modern AI tooling ships in weeks, not quarters. Fixed price, and the code is yours.
Our work
Three end-to-end builds. The first is Elypsum's. The other two are from before the studio: included as proof of depth on the foundations your product will need from day one.
Mobile Event Platform
Mobile app · Slovak startup · 1-person dev team
A production mobile event platform - payments, real-time notifications, QR ticketing, and a full venue dashboard - shipped to both app stores by a one-person team.
Data Intelligence Platform
SaaS · Czech startup · 2-person dev team
Rebuilt an unreliable data pipeline across 10+ sources and built an AI ICP tool: processing time halved, 95%+ accuracy, and a new core revenue driver.
Niche Marketplace
E-commerce · US scaleup · 12-person dev team
Rebuilt search for conversion and modernized a fast-growing marketplace's codebase while features kept shipping - no pause, no regressions.
Have something to build? Start a project
How we work
A predictable process, end to end - no surprises, no lock-in.
Product Discovery
We spend 2–4 weeks understanding your business, scoping the product, and planning how it'll be built. You get a detailed plan, a fixed price, and a timeline - before any code is written. If the plan doesn't convince you, it's yours to take anywhere.
Product Development
Development runs in weekly cycles against the fixed scope and price set in Product Discovery. Every week you see working software, not slide decks, so you can steer the product as it takes shape - not discover problems at the end.
Ship & Support
We take the product live and stay on through the launch window. After that, you decide what's next: continued development, ongoing support, or a full handoff to your team with documentation and everything they need to take over. No lock-in, ever.
Pricing
Three ways we help, always fixed-price. You see the price before you commit, and working software every week after that. For context, a senior in-house engineer runs €80,000+ a year, and three to six months to hire.
Product Discovery
€5,000 – €10,000
2–4 weeks
Paid scoping that ends in a detailed plan, a fixed price, a timeline, and a working architecture for the full build. Best when you want to know exactly what you're getting before committing to development. If the plan doesn't convince you, it's yours to take anywhere.
Product Development
From €20,000
4–8 weeks
The complete project, end to end: a website, a web app, a mobile app, or all three. Best for a new product from scratch, or replacing a no-code tool that's hit its limits. Includes Discovery, weekly delivery, and a live launch with ongoing support. AI features built in where they earn their place, and you own all of it - the code, the design, the product.
Product Rescue & Modernization
€10,000+
Scope-dependent
Fixing the product you already have. Best when it works but is slowing you down - slow to load, breaking under load, or taking weeks to add anything new. Often it was built on no-code, by an outside team, or by a contractor who's moved on. Starts with a technical review, then a fixed-price plan. Same product, running faster and built to grow.
Not sure which fits? Start a project and we'll tell you.
What we believe
Strong opinions, transparently held.
Discovery should be paid.
Scoping done right takes weeks, not a sales call. We charge for it because it's real work with a real deliverable. The plan is yours, either way.
Fixed price is a discipline.
The price you sign is the price you pay. If we underestimate the work, that's our problem, not yours. It only moves if you ask us for something new.
AI is leverage, not a headline.
We use modern AI tooling to build faster, and that speed shows up in your fixed price. In your product, AI features have to pay rent: hours saved, revenue earned, decisions made faster. If we can't measure it, we don't build it.
Same team scopes and ships.
The person who pitched you is the person writing your code. The studio is small by design. There's no handoff between sales and delivery.
No lock-in is a feature.
Your spec is yours after Discovery. Your code is yours after launch. We win the next project because you want us back, not because leaving is expensive.
Working code, not slides.
Every week, you get a working build to click through. Problems surface while we can still fix them. No status reports. No surprises at the end.
About
A product engineering studio based in Slovakia. We work with founders across Europe and the US who need to ship real software but don't have an engineering team, and don't want to spend six months hiring one.
Why a studio, not an agency
Traditional agencies give you account managers, rotating developers, and communication layers. Freelancers give you one person with no backup plan. A studio gives you the best of both: senior-level expertise, direct communication, and a team that owns the outcome.
When you work with Elypsum, you work with people who build - not people who manage people who build.
Kristián Müller
~ Founder ~
Connect on LinkedInI've spent the last several years building products for startups and scaleups across Europe and the US - data platforms, marketplaces, mobile apps, AI-powered features - taking them from early concepts through production at scale.
I started Elypsum because I kept seeing the same problem: companies that needed senior engineering but couldn't justify a full hire, and couldn't get what they needed from agencies that rotate junior developers through projects. So I built a studio where you work directly with the people writing your code - and where every project gets the architecture decisions it deserves.
How does one studio ship like a team? I build with modern AI coding tooling across the whole process, so a small senior team moves at the speed of a much larger one. That is what makes a fixed price and a weekly working build realistic, not a stretch. Elypsum stays deliberately small: a few builds at a time, each with senior attention from the first call to launch.
Questions you might have
What founders ask before they hire us.
Didn't find your answer? Start a project
Let's talk about your project
Tell us what you're building.
Within 24 hours we'll reply to set up a 30-minute call where we:
- Understand the business and the product you need
- Decide together whether we're a good fit
- Outline concrete next steps and rough pricing
If we're not the right fit, we'll say so on the call.
No hard sell, no spam.
EU-based studio. EU contracts and invoicing, GDPR by default. We work in English, German, Slovak, and Czech.
Prefer to talk first? Message me on LinkedIn.