Member of Technical Staff

a16z-speedrun; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive salary + equity

Full benefits (health, dental, vision)

Small team, big impact

Job summary

Sourcerer in San Francisco is seeking a highly autonomous Member of Technical Staff to tackle ambiguous problems across agents, data infrastructure, and product. You will prototype quickly, iterate with real customers, and scale successful ideas into production.

The role offers rapid growth into engineering leadership or staff-level individual contributor paths. The position emphasizes ownership, collaboration with founders, and delivering concrete solutions in a fast-moving environment.

Qualifications

• Exceptional technical ability with a track record of built systems.
• Experience with modern AI tooling (LLMs, agents, evals) or hard systems engineering.
• Strong sense of ownership and ability to work autonomously.
• Wants early seat at a revenue-generating startup.

Responsibilities

• Own agent workflows and scraping infrastructure across a dozen-plus countries.
• Prototype fast, prove with real customers, then harden it into production.
• Shape your trajectory toward engineering leadership or staff-level IC.

Skills

AI tooling

LLMs

Agents

Data infrastructure

Systems engineering

Tools

LLMs

Agents

Evaluation frameworks

Production systems

Job description

Member of Technical Staff

San Francisco, CA · Full-time · In-person

For exceptional builders who don't fit in a box

Former founder? Research engineer? Generalist who's been the secret weapon on every team you've joined? This is the role. Member of Technical Staff means one thing at Sourcerer: you can take an impossibly ambiguous problem — "underwrite any supplier in China," "make an agent negotiate a purchase order" — and come back with a working system.

You will work across everything: agents, data infrastructure, product, and whatever the mission demands this month. The ceiling on this role is wherever you take it.

What you'll own

• Whatever matters most right now — agent workflows, search and scraping infrastructure across a dozen-plus countries, underwriting models, customer-facing product

• The full loop — prototype fast, prove it with real customers, then harden it into production

• Your own trajectory — MTS here has grown into engineering leadership, AI leadership, and staff-level IC paths. The role becomes what your work earns.

Who we're looking for

• Exceptional technical ability — we care about what you've built, not how many years you've existed
• Serious experience with modern AI tooling (LLMs, agents, evals) and/or hard systems engineering
• Maximum agency: you find the problem, you solve the problem, you tell us about it after
• You want the earliest seat possible at a company that already has real revenue and real enterprise customers

What you get

• Competitive salary + early-stage equity calibrated to what you bring
• Full benefits (health, dental, vision)
• The most leverage-per-person you will find anywhere: small team, huge market, direct line to founders and customers