Start Up Company

Boston MA OR New York NY

REMOTE!

Must be local to Boston MA and New York NY to apply

Will attend trade shows 2-3 times a month

Needed ASAP

DIRECT HIRE

Shipping Production Software Engineer with Typescript, Next.js (App Router), React, in production

The Role
Founding ENGINEER. You set technical direction, write the hardest code, and build the systems that carry from thousands to millions of users. You report to the founder.

Experience Required

• 8+ years shipping production software, including 3+ years at a startup that scaled from low thousands to 1M+ users.
• Was engineer 1-5 at an early-stage company, OR joined a now-200+ person company before headcount hit 50.
• Has owned production incidents end-to-end: detect, diagnose, fix, postmortem.
• Has shipped consumer or prosumer mobile web at scale.
• Bonus: voice, transcription, or AI-product domain experience (Otter, Rev, Fireflies, AssemblyAI, Granola, ElevenLabs, Tavus, or similar).

Skills Required

• TypeScript, Next.js (App Router), React, in production.
• Postgres at scale: online migrations, partitioning, query optimization on 100GB+ databases.
• Production queue systems (SQS, Inngest, Temporal, BullMQ, or equivalent) at 10k+ jobs per minute.
• LLM cost and latency optimization with Anthropic or OpenAI: prompt caching, model routing, batching.
• Multi-vendor integration: Stripe webhooks with idempotency, Twilio, Deepgram or comparable transcription, Cloudflare R2 or S3.
• Mobile web reliability including iOS Safari edge cases: background tab throttling, microphone state, IndexedDB quirks.
• Observability fluency: Sentry, PostHog, structured logging, SLIs that page before users complain.

Personality Type

Does what is needed without waiting for permissions or process.
Needs to be a self-starter.
Needs to have built side projects that real users ACTUALLY use. 
Needs to be Direct who pushes back on bad ideas and says "no" when it matters.
Needs to be comfortable with Ambiguity. Operates without a PM writing tickets.
Has worked at a company with under 30 people for at least 18 months