Custom software, shipped in weeks. Not quarters.
We help SMB founders and CTOs ship the apps their business actually needs, without spinning up an internal team. AI-augmented process. Senior engineers. Fixed sprints.
What we do
- 01
Product MVP sprints
You have an idea and a deadline. We ship a production-ready MVP in 4-8 weeks. Fixed scope, fixed price, senior team only.
See details → - 02
AI integration for existing apps
Your app exists but doesn't use AI yet. We add chat, summarization, search, document understanding, whatever moves the needle, in 2-6 weeks.
See details → - 03
Technical due diligence
You're investing or being invested in. We audit the codebase, flag the risks, and hand you a report your lawyer can read. Typically 1 week.
See details →
Selected work
See all work →- Oceaneering2023 · 10 months (Aug 2022 — May 2023)
Software engineering at Oceaneering: OceanSMART container ERP
Nine months on a container-shipping ERP platform used by global logistics teams. Stack modernization, vessel and container tracking, real-time operational visibility.
- JavaScript / TypeScript
- React
- Node.js
- GraphQL
- Avo HQ2021 · 16 months (May 2020 — Aug 2021)
Avo: a zero-maintenance admin framework for Ruby on Rails
Co-founded an open-source Rails admin framework, still shipping at avohq.io. Configuration-based, no code generation, designed so teams can extend it without owning it.
- Ruby on Rails
- Hotwire / Stimulus
- Tailwind
- PostgreSQL
- Basetool (v1)2022 · 7 months (Jul 2021 — Jan 2022)
Basetool v1: bringing data under one roof for technical teams
Co-founded the original Basetool in 2021: a TypeScript / React / Next.js platform that let technical teams pull data from all their tools into one configurable workspace.
- TypeScript
- React
- Next.js
- Redux
Worked with
Past collaborators David shipped product alongside, in the roles they held at the time.
CEO & Co-founder · Waydev (YC W21)
David was a Software Engineer at Waydev (Oct 2021 – Aug 2022), migrating the main Laravel app to Octane and shipping the multi-channel notification microservice.
Founder · Avo HQ
David co-founded the open-source Rails admin framework Avo with Adrian (May 2020 – Aug 2021). Still actively maintained at avohq.io.
Co-founder · The Social Cat
David shipped product end-to-end as Product Engineer at The Social Cat, an influencer-marketing platform for small brands.
How we work
- 01
30-min call
We talk through what you need and whether we are a fit.
- 02
Scoping document
Shared, signed, with a timeline and a price.
- 03
Sprint kickoff
We ship every week and demo every Friday.
- 04
Handoff
Docs, runbook, and optional ongoing support.

Founder
David Marin
Founder of Basetool (AI-augmented custom-software studio) and Sixthly (stealth productivity agent). Eight years shipping product at YC-backed consumer and developer-tools startups: Product Engineer at The Social Cat, Software Engineer at YC W21 Waydev, co-founder of the Avo Rails admin framework. BSc Computer Science, University of Twente — Best Paper Award, IEEE SMC 2020. Four languages, Ironman finisher.
Tell us what you're building.
30 minutes on the calendar. No pitch. We listen, we ask questions, we tell you whether we can help.





