Senior Full Stack Engineer - Founding Team

Fulcrum; San Francisco (CA); On-site; USD 160,000 - 240,000; Full time

Job summary

Fulcrum is looking for a Senior Full Stack Engineer to join their founding team in San Francisco. You will tackle significant challenges by creating end-to-end products that leverage AI, ensuring substantial customer impact while working in a collaborative environment. This role is ideal for someone passionate about product development and eager to shape the future of the insurance-brokerage industry.

Benefits

Competitive salary with equity

High-ownership culture

Regular team off-sites and dinners

Qualifications

• 3-5 years building production software across the stack.
• Strong in TypeScript, React, and/or Python.
• Proven at shipping 0→1 products in fast-moving environments.

Responsibilities

• Build full-stack products and features blending UX with AI agents.
• Prototype and iterate quickly based on customer feedback.
• Scale the platform for enterprise-level performance.

Skills

TypeScript

React

Python

Product Management

UX Design

Job description

Senior Full Stack Engineer - Founding Team

Senior Full Stack Engineer - Founding Team

This range is provided by Fulcrum. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$160,000.00/yr - $240,000.00/yr

About Fulcrum

Fulcrum is re-wiring the insurance-brokerage industry with AI agents that let brokerages grow revenue without adding headcount. Our platform already saves customers thousands of hours and millions of dollars every year.

Why Fulcrum

• 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.
• 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.
• High-ownership, high-trust culture with lightning-fast executors.
• Regular team off-sites, dinners, and an office stocked for builders.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

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