Your app idea,
launched in weeks.
Seiri Studio takes social, marketplace, and community apps from idea to a working, launched product — in weeks, not months, for a fixed price.Start with a one-week demo sprint: a clickable app in your brand, deployed and real.
Selected work
Real products, shipped.
Not mockups. Click into any project to see what was built, how fast, and what it runs on.
Acquired
Social recommendation app
Trusted watch recommendations from friends, not algorithms.
Idea to deployed product in weeks — delivered June 2026
MyceliumQL
Enterprise data fabric
Route it. Don't store it. Federated data without centralized custody.
In production — api.myceliumql.com
MedPACT
Healthcare analytics
Machine-learning cost prediction for medical billing.
Client engagement, delivered with technical roadmap
BoatBites
Marine delivery marketplace
Food, drinks, and essentials — delivered straight to your boat.
Three-month product engagement (via Toptal)
Independent engagement via Toptal — not a Seiri Studio project. Shown as founder work history.
TangoEje
Community learning platform
A federated home for the global tango community.
In development
Seiri Portal
Product workspace
The workspace where ideas become shipped software.
In production — runs the studio
In the lab
View all work
Seiri (整理) — the studio's namesake
Sort what matters.
Ship it.
Seiri is the first step of Toyota's 5S method — the discipline that has revolutionized how things get made for 75 years, from car manufacturing to software engineering. The principle: separate what's essential from what isn't, and organize around it.
That's what this studio brings to product and its founders: cutting an idea down to its most potent form and shipping it in weeks — so you can test it in the real world at low cost, and scale what works. In the age of AI it has never been easier to build something — and never harder to build the right thing.
Seiri Studio is run by Chris Williams, a Seattle-rooted founder with experience across entrepreneurship, engineering, product management, fundraising, and venture capital — at large companies and startups alike.
Chris Williams — Founder
Range
- Native iOS & cross-platform mobile apps
- AI platforms, model development & RAG engines
- AI & data infrastructure
- Consumer, social & marketplace apps
Templates that shipped before
Builds start from platforms that have already been through QA with real users — then get tailored to your domain: social, marketplace, chatbot, healthcare.
AI-enhanced, not vibe-coded
A proven agentic development lifecycle does the heavy lifting; user-tested foundations and real quality assurance keep it honest.
Built right, built intentionally
We think ahead of the game on product risk — market, technical, and the regulation coming for AI products (GDPR & AI-governance certified).
Work with us
Start small. Ship fast.
In the words of Steve Jobs: “Real artists ship.”
Every engagement starts with a demo sprint — shaped in conversation with you, built on user-tested templates, tailored to your domain. One week to a real, clickable product. You risk $2.5k, not your roadmap.
Demo Sprint
Start here$2.5k · 1 week
A clickable app in your brand, with your content, deployed and real. Credits toward the full build.
Full Launch
Fixed price
Idea to launched product — design, build, deploy, and handoff. Weeks, not months.
White-Label Platform
Setup + monthly
A proven vertical (community, marketplace, club) hosted and branded for your organization.
Tell us what you're building
A two-line email is enough — what it is, who it's for. You'll get back a straight answer on whether a demo sprint fits.