Software Engineer Marketplace

Company: AfterQuery
Location: San Francisco CA (FiDi office Monday-Friday; half day or remote on Sunday)
Compensation: $250000 - $300000 base ($300000 - $400000 OTE) competitive equity
Employment Type: Full-time
Visa Sponsorship: Visa transfers (OPT H-1B transfer)

AfterQuery builds the complex data infrastructure that frontier AI labs use to train and evaluate their models and is becoming the go-to data infrastructure partner for Y Combinator companies. It has a talent-dense founding team from top investment banks and quant firms.

Founded in 2024 with about 85 people in San Francisco AfterQuery recently raised at a $3.2B valuation 10x its valuation in five months making it the fastest unicorn in YC history.

AfterQuery is hiring a Software Engineer (2 years) to build the core infrastructure behind expert acquisition onboarding and matching at scale. This is not a traditional growth engineering role: you will build the platform and tooling the growth team uses to hire assess interview onboard and retain domain experts from outreach tooling and an AI interviewer to automated expert-to-project matching with a path to building ML-driven recommendation systems.

• Build and own the expert marketplace infrastructure: outreach AI interviewing assessments and onboarding tooling.
• Develop the hiring platform where experts are onboarded managed and dispatched to projects by fit and availability.
• Create automations and internal tools that replace manual workflows and multiply the growth teams throughput.
• Partner with growth associates to find bottlenecks instrument the funnel and ship high-leverage improvements.
• Eventually build ML-driven recommendation systems that predict expert needs for new projects.

• 2 years of software engineering experience
• Full-stack skills across TypeScript/JavaScript React and Python
• Comfort owning systems end to end with significant autonomy
• Ability to work in the San Francisco office Monday-Friday

TypeScript/JavaScript React Python Kubernetes Kafka Redis Elasticsearch AWS GCP

REVENUE: 17% of first-year salary. Est. fee per hire $43K-$51K; 4 seat(s) up to $187K if all filled.

TARGET COMPANIES (suggested): Scale AI Surge AI Mercor Snorkel AI Jane Street Citadel Hudson River Trading. DO NOT SOURCE: OpenAI (client do-not-source rule).

BEST-FIT CANDIDATE: 2 yrs; full-stack TS/Python; end-to-end ownership; visa: transfers only (OPT H-1B transfer); location: SF M-F. Client rule: do NOT source anyone currently at OpenAI.