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Software Engineer - Hiring Infra (LatAM)

AfterQuery· Engineering
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Hybrid (San Francisco, CA, US)$7k/mo - $10k/moFull-timePosted 7mo ago

About the role

Applied research lab building data infrastructure for foundation models; role focuses on end-to-end ownership of projects at the frontier of AI evaluation, including research engineering and platform engineering, with emphasis on scalable systems, distributed infrastructure, and human-in-the-loop workflows.

Responsibilities

  • 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.

Qualifications

  • Strong coding fundamentals in Node.js / TypeScript, Python and/or Go
  • Deep understanding of distributed systems, scalability challenges, and system design.
  • Familiarity with cloud platforms (GCP/AWS), Kubernetes, APIs, NoSQL databases.
  • Ability to reason about trade-offs and balance speed vs reliability.
  • Strong communication skills and a bias toward ownership, curiosity, and delivering simple solutions to complex problems.
  • Bonus: Experience with RL environments, agentic systems, or human-in-the-loop workflows.

Skills

Required:Node.jsTypeScriptPythonDistributed systems
Nice to have:Go
Last updated Aug 26, 2026. Interested? Apply on the company site.
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About AfterQuery

AfterQuery is an applied research lab curating data solutions to accelerate foundation model development.

AI researchdata solutionsfoundation model developmenttraining datasupervised fine-tuningreinforcement learningagent environmentscomputer use trajectories
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