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Product Studio · Technical Consultancy
Senior product engineering for teams that need to move clearly.
621 Labs designs, builds, and ships software products for ourselves and for select clients who need focused technical strategy, hands-on execution, and clean delivery.
Studio Work
Products give our consulting sharper instincts.
We build real software in the market, then bring that operator mindset into client engagements.
Current product
Amur
An AI-powered training coach that turns Strava, Whoop, and Withings data into personalized weekly plans, daily check-ins, and recovery guidance — with a native iOS app in development.
Services
Focused support where senior judgment matters.
We are most useful when the problem needs both product sense and production engineering — not another layer of process.
Product Development
Prototype, design, build, and launch web, backend, AI, and native iOS products with a compact senior team.
Technical Consulting
Architecture reviews, roadmap pressure-testing, system design, and hands-on implementation for teams facing important technical decisions.
Execution Rescue
Stabilize stalled launches, simplify overgrown systems, and turn ambiguous product requirements into shippable milestones.
About
Small by design. Technical by default.
621 Labs LLC is a software studio that builds consumer products and works with a limited number of outside consulting clients. The work is intentionally practical: understand the product, make the technical tradeoffs explicit, and ship the thing well.
We are a fit for founders, operators, and teams that want a senior partner who can move from strategy into code without losing the plot.
Contact
Tell us what you are trying to build.
Share the rough shape of the project, the decision in front of you, or the system that needs attention.