Dan Slapelis
Founder and engineer
Eleven years from bare-metal infrastructure to cloud platforms and production AI agents, most recently running cloud infrastructure at Intuit Credit Karma. Cybersecurity degree from RIT.
We build the apps, systems, and AI agents that run your business.
A small, senior team. We design it, ship it, and keep it running.
Four layers. One team.
Most problems live where the layers meet. We work across all of them, so nothing gets lost in a hand-off.
- FrontendInterfaces people enjoy using.Fast, accessible web apps with the polish that makes a product feel finished. Design systems, complex forms, pages that load quickly.
- BackendAPIs and data you can trust.Clean APIs, sound data models, auth, billing, and background jobs. The parts that have to be right every time.
- InfrastructureSystems that stay up.Cloud architecture, CI/CD, monitoring, backups, and security hardening, set up before they turn into emergencies.
- AgentsAI that does real work.RAG, agents, and tool use, with evals that prove it works and guardrails against prompt injection and data leaks.
Software we run ourselves.
Two live products we built and operate. When something breaks, it pages us. That is the experience you hire.
How we work with you.
Scoped engagements, not seats.
Every build has a defined outcome and an end date. Ongoing support is optional.
One client at a time, per engineer.
When we are on your project, we are only on your project. No split attention.
The people in the pitch do the work.
No hand-off to a delivery team you have never met. You work with the engineers you hired.
Built to last
If we would not maintain it in five years, we do not ship it.
Secure from day one
Data, access, and trust come before code, not after an incident.
Infrastructure that holds
Monitoring, backups, and alerts. The unglamorous work that matters most.
Straight answers
If the job is smaller than you think, we will tell you.
Sloths aren’t slow. They’re deliberate. They don’t waste a move, and neither should your software.
StackSloth started with software we wanted to run ourselves. WedLoop and Navver are still live, still paying their own way, and still paging us when something breaks.
Small by design. Senior by default.
Who you’re hiring.
Steve Lesko
Head of Sales
Eleven years in sales, from financial advisory to technology. Qualifies fit honestly and stays close to delivery long after the deal is signed.
Got something to build?
Send a few lines. You will hear back from one of the two people above.