@ Our Company
AfterQuery AfterQuery Software Engineer (SWE) Full-time On-site San Francisco, CA $180K - $220K (OTE: $350K - $600K) (On-target bonus of $230K and uncapped upside – Bonus Structure: Receive 4% of profits from value of total contracts of your vertical (Avg contract value per vertical is $8M, Avg margin is 70%). Flexible base for very strong background and open to offering a sign-on bonus.) About this role As part of AfterQuery’s engineering team, you’ll have end-to-end ownership over projects that push the frontier of AI evaluation. This is not a narrow role.
One week you might prototype a new RL environment from a research paper, the next you’ll be deploying distributed experiments on Kubernetes, and the week after you’ll be improving the reliability of our Next.js dashboards or building a Kafka pipeline for annotator analytics.
What You’ll Do
Design and build scalable systems: RL environments, APIs, and human-in-the-loop platforms.
Collaborate across research, product, and design to ship features quickly.
Write clean, maintainable code and contribute to documentation.
Participate in code reviews and design discussions
Solve real-world scalability and reliability challenges.
Contribute to the core infrastructure powering data and evaluation for leading AI labs.
1 - 3 years of experience as a fullstack SWE Salary $180K - $220K (OTE: $350K - $600K) (On-target bonus of $230K and uncapped upside – Bonus Structure: Receive 4% of profits from value of total contracts of your vertical (Avg contract value per vertical is $8M, Avg margin is 70%). Flexible base for very strong background and open to offering a sign-on bonus.) Equity Competitive Equity Visa sponsorship available On-site work policy 5 days a week (M-F) in our FiDi (SF) office and half-day or remote on Sunday. Full-time position Location San Francisco, CA Report to https://www.linkedin.com/in/carlossgg/ Tech stack TypeScript/JavaScript, Next.jS, React, Node.js, Python, Kubernetes, Kafka, Redis, Elasticsearch, Cloud Platforms: AWS, GCP About AfterQuery AfterQuery is helping push the frontier of LLMs and AI Agents through novel datasets and experimentation. We work on building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows. We work with all 5 of the leading AI labs and are becoming the go-to partner for data infrastructure for YC companies. We have a sharp hockey stick growth rate and are extremely talent-dense, with most of our founding team coming from top IB and quant firms.
Team size 20 employees Founded 2024 Website www.afterquery.com/ LinkedIn Visit Total funding $34M Company locations FiDi (SF) +1 About the team Our co-founders bring expertise from quantitative trading at Citadel Securities, SWE at Google and Meta, and PE at Morgan Stanley and Silver Lake. Our founding team comes from rigorous environments in tech and finance—Jane Street, Goldman Sachs, and Bloomberg—where they've proven they can ship at the highest level.
This is a young, hungry team eager to build something massive together.
You'll work alongside people who've already done hard things and are now channeling that intensity into pushing the frontier of AI. The culture is tight-knit and collaborative—fast iteration, open communication, and a genuine sense of camaraderie where the team has become close friends while moving at breakneck speed. If you're looking to work with exceptional people who take ownership and ship relentlessly, this is that team!
We're looking to expand our engineering team into LATAM.
Tech stack TypeScript/JavaScript, Next.jS, React, Node.js, Python, Kubernetes, Kafka, Redis, Elasticsearch, Cloud Platforms: AWS, GCP Interview process Initial Screen (30 minutes) 2nd Round with Engineer Take-Home and Review (6 hours) Work Trial (2 days in SF office ) References (if necessary)