Software Engineer - Marketplace (Growth Infrastructure)

Software Engineer - Marketplace (Growth Infrastructure) Company: AfterQuery Location: San Francisco, CA (FiDi office, Monday-Friday; half day or remote on Sunday) Compensation: $250,000 - $300,000 base ($300,000 - $400,000 OTE) + competitive equity Employment Type: Full-time Visa Sponsorship: Visa transfers (OPT, H-1B transfer) About AfterQuery 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. The Role 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. What You Will Do 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 team's 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. What You Bring 2+ years of software engineering experience Full-stack skills across TypeScript/JavaScript, Next.js, React, Node.js and Python Comfort owning systems end to end with significant autonomy Ability to work in the San Francisco office Monday-Friday Tech Stack TypeScript/JavaScript, Next.js, React, Node.js, Python, Kubernetes, Kafka, Redis, Elasticsearch, AWS, GCP