Fullstack Engineer (TypeScript / React / Node.js)
Summary
Builds full-stack features in TypeScript, React and Node.js for Harmony's conversation-analytics product, shipping directly to production for paying enterprise clients. Works directly with founders and customers in a 12-person remote-first startup, using AI tools daily.
Harmony is the conversation infrastructure for people-facing teams. Customers tell companies everything: what's broken, what sells, what's coming next. Harmony captures those conversations at scale and turns them into what leadership actually acts on: which reps win, why deals die, what to build next.
We're twelve people across 3 continents. Repeat builders who love product, craft and taste. We ship fast, decide fast and move on.
About the role
Real product, real revenue, real users. We have paying enterprise clients and more to build than we have hands for. Nobody hands you a perfectly scoped ticket: you talk to the person with the problem, work directly with the founders and engineers, and your code hits production this week, not in six months. Years of experience matter less than what you can ship and how fast you learn.
How you'll know it's working
Features you shipped this month are used by real teams this month. The parts of the product you touched feel faster and cleaner. You're picking up problems before anyone assigns them, and the team trusts you with bigger ones.
This isn't for you if
You need a spec before you can start. You treat AI tools as a shortcut for juniors. You want to go deep on one narrow layer.
How we work
Own it fully. Build the system, not just the thing.
Be direct, be kind.
Ship it: a V1 with real users beats a V5 in a slide deck.
Stay curious, stay humble.
What we offer
B2B contract, full-time.
ESOP.
Growth: your role and ownership can evolve fast.
Remote-first with a few hours of overlap with European time.
Direct impact: your code ships to production and real teams use it.
Must have
- TypeScript, full stack. React + Node.js. You've shipped something real, even if it was a side project or a startup that didn't work out.
- AI-native. You build with AI daily.
- You learn fast. New codebases, new domains, new tools. You don't need a training program, you need access.
- You care about craft. Loading states, error handling, the thousand small decisions that make software feel good.
- Low ego, high standards.
Nice to have
- Public projects or open source contributions we can look at.
- Startup experience. You know the rhythm.
- PostgreSQL, API design, or integration work with third-party tools.
- Experience with voice, transcription, or conversation data.
