Turn a hard product idea into software people can use.
STH Labs partners with founders and lean teams to design, build, and ship SaaS products, internal tools, and AI-enabled workflows — with senior engineering judgment from the first conversation to production.
Clear decisions.
Working software.
Less translation between strategy and code. More product shipped with intent.
Shape the scopeTurn ambiguity into a buildable plan.
✓Build the coreShip the smallest useful product.
✓Leave it strongerOwn the code, deploy, and next move.
→Senior thinking, close to the work.
STH Labs is deliberately small. That means fewer handoffs, a shorter feedback loop, and someone accountable for how the pieces fit together.
SaaS products that earn their next user.
From first workflow to production platform: product thinking, technical direction, and the full-stack execution to get there.
Internal tools that remove friction.
Replace spreadsheet handoffs and brittle admin work with focused systems your team will actually use.
AI integrations with a job to do.
Use models where they create leverage: search, support, extraction, automation, and better product experiences.
Backend systems built for change.
Java/Spring, APIs, data flows, and the architecture work that keeps a growing product understandable.
A calmer path out of legacy.
Targeted upgrades for teams that need to move a critical system forward without pausing the business.
Enough structure to move fast.
Share your requirements
Walk us through what you need — a form, a call, a doc, whatever's easiest for you.
Get a scoped quote
We break the work into tasks, estimate hours, and send a fixed quote before anything starts.
We build, you see progress
Regular check-ins and staging deploys — no disappearing for six weeks.
Ship and support
You get the code, the deploy, and a handoff you can actually maintain — plus support after launch.
The useful questions, answered.
How does pricing work?↓
You describe the project, we scope it into tasks and give you a fixed quote based on estimated hours before any work starts. No open-ended hourly billing surprises.
How long does a typical project take?↓
Depends entirely on scope — a focused MVP can ship in a few weeks, a larger platform takes longer. You'll get a timeline alongside the quote.
Who will I work with?↓
You work directly with Stavros Thalassinos, a senior engineer who stays close to both the product decisions and the implementation. Trusted specialists can join when a project genuinely needs them.
Do I own the code and the deployment?↓
Yes. You get full source access and deployment ownership at handoff — no lock-in to us for basic maintenance.
What if requirements change mid-project?↓
Scope changes get a quick re-quote for the delta so you always know the cost impact before agreeing to a change.
Bring the messy version.
A paragraph, a rough brief, or a problem you cannot quite name yet is enough. We’ll reply with a useful next step, not a generic pitch.