Senior Full Stack Engineer - Founding Team

About US

TechOnTech LLC is a recruitment company made by engineers that wants to help start ups and small to mid range companies find the right technical talent. Our firsthand expertise empowers us to excel in finding, filtering, and conducting insightful interviews with tech talent, ensuring we connect the right candidate to the right company. We are looking for senior engineers who wants to join a fast growing start up as part of their founding engineering team.

Why Join our client?

• Rocket-ship growth. We’ve grown 5× in the last six months—and accelerating.

• Extreme ownership. You’ll work directly with enterprise users and ship end-to-end products that save them hours every week.

• Bleeding-edge problems, real impact. Tackle tough AI and product challenges whose wins show up immediately in customer workflows.

• In-person collaboration. Join a lean, staff-level team (ex-Affirm, Uber, DoorDash, McKinsey) working side-by-side in San Francisco; we believe the best ideas are fostered in an in-person environment.

• Top-of-market rewards. Competitive base salary plus meaningful founding-team equity.

Why join as a Senior Full Stack Engineer?

• Own the product surface. Ship end-to-end features—frontend, backend, and LLM orchestration—that automate millions of dollars of work.

• Close Collaboration with Customers. Work closely with our customers for designing, shaping and shipping the latest products into their hands.

• Hyper-growth, tiny team. Enjoy massive autonomy and zero bureaucracy to define the product surface while we scale from< 10 people to the next phase.

• Cutting-edge stack. Python, TypeScript, React/Next.js, Temporal, Postgres, AWS, plus closed- & open-source LLMs.

• Founder-level impact. Shape product strategy, culture, and engineering standards from the ground up.

What you’ll do

• Build full-stack products & features that blend UX with AI agents for maximum customer impact.

• Prototype & iterate quickly, turning customer pain points into live solutions in days, not quarters.

• Scale the platform—security, observability, and performance — for enterprise scale.

• Collaborate with customers & SMEs to craft new and delightful workflows for complex insurance tasks.

• Raise the technical bar, mentoring peers & juniors, and refining best practices for a high-velocity team.

About you

• 3–5 yrs building production software across the stack; strong in TypeScript + React and/or Python.

• Proven at shipping 0→1 products in fast-moving environments (startup or internal incubation).

• Product-obsessed. You think in user journeys, sweat UX details, and measure success in customer adoption.

• Bias to action. Comfort making trade-offs, shipping fast, and learning from real-world usage.

• Nice-to-haves: experience with LLM apps, cloud infra (AWS), or fintech/insurtech domains.

What we offer

• Competitive salary ($160k-$240k) + equity on founder-friendly terms.

• Full health, dental & vision.

• High-ownership, high-trust culture with lightning-fast executors.

• Regular team off-sites, dinners, and an office stocked for builders.