Custom Software · Tampa Bay

Custom software for Tampa Bay founders.
Senior team. 6-week MVP. Fixed price.

Tampa Bay product management. Senior engineers in Cluj-Napoca writing the code. One scoped fixed-price proposal, one Slack channel, weekly demos. No mystery line items.

  • Local PM you can call. Senior dev team you can trust
  • Fixed-price proposal in 48 hours, no scope creep
  • Production code, tests, docs, runbook included
Tarpon Springs HQ· In-person if needed
14 portfolio companies built on this stack

Book a 30-min scope call

Tell us what you're building. We'll come back with a fixed-price proposal and a delivery timeline within 48 hours.

No spam. No pitch decks. Real reply from a real person.

Trusted by Sponge Labs portfolio + clients

Hill TribeESS GlobalGolden BrushWebgurusSRV SourceProject22
A Tampa Bay founder reviewing software product UI on a laptop in a warm, modern office
Real software, shipped

Built by people you can sit across from.

Sponge Labs handles the discovery, scope, and account management here in Tampa Bay. Webgurus (200+ projects, 8 years, EU-based senior team) writes the code. One pod, one timeline, fixed price. The way custom software is supposed to work.

Book my scope call
Why founders pick us

The dev team you wish you'd hired six months ago.

Offshore agencies disappear after invoice three. AI tools (Bolt, Lovable, v0) get you a demo, not a business. We do real custom software, with senior engineers, with project management that's accountable to you. Built for the day after launch.

Sponge Labs PM here, Webgurus team in EU.

One project manager you can call in Tampa Bay. One senior engineering team in Cluj-Napoca. 8 years together, 200+ projects shipped, no offshore handoff drama.

Fixed price after the scope call.

After our 30-minute scope call you get a written, milestone-tagged, fixed-price proposal in 48 hours. No mystery line items, no surprise change orders.

MVP in 6 weeks. Demos every Friday.

Sprint one ships real production code, not setup theatre. You see real progress every 7 days. You always know exactly where we are.

Production-grade from day one.

Real auth, real payments, real database design, real tests. The boring infrastructure that turns a demo into a business. Lovable, Bolt, v0 skip this. We don't.

Built for what comes after launch.

Tests, monitoring, runbook, observability, deploy pipeline. So you don't get paged at 2am the day after launch. So the first 1,000 users don't break it.

Code you can hand off.

Documented, tested, repo you own. Fire us tomorrow and your next dev isn't lost. We've handed off projects to internal teams cleanly. Many times.

How it works

From first call to live software in 6 weeks.

01Day 1

30-min scope call

We talk through what you're building, who it's for, and what 'done' looks like. By the end of the call we know whether we're a fit and what the rough scope is.

02Day 2-3

Fixed-price proposal

Within 48 hours you get a milestone-tagged, fixed-price written proposal. What we build, what we cut, what we keep from prior work. No mystery line items.

03Week 1-6

Build sprint

Sponge Labs PM runs the weekly demos. Webgurus senior team writes the code. You see real progress every Friday. Slack-first, async-friendly.

04Week 7+

Launch + 30 days support

Production deploy, docs, runbook, observability. Your team owns it from day one. We stick around 30 days to fix what your first users find.

Honest answers

Things people ask before booking the call.

MVPs (6-week productized track) start at $25,000. Larger custom builds run $50k–$250k+ depending on scope. After our 30-minute scope call we send a written fixed-price proposal in 48 hours so you know exactly what it costs before you commit.
Ready when you are

Get a written, fixed-price proposal in 48 hours.

30-minute scope call. Then a written proposal with timeline and milestones. If we're not a fit we'll tell you and point you somewhere we are.

Book my scope call