Software Engineer 3New$109K

The opportunity

The Agent Research and Tooling team, part of MongoDB's AI Builder Experience organization, owns the platform layer around agents: how teams author, distribute, evaluate, monitor, and improve agent skills and agent behavior. We are hiring a software engineer to build and maintain…

What you'll do

  • Build and maintain agent skills and the infrastructure to validate, evaluate, publish, and maintain them

  • Design evaluation datasets and workflows that compare agent behavior against: a baseline and produce actionable quality signals

  • Build agent metrics and observability: skill selection and routing, success and failure outcomes, tool calls, latency, and token usage

  • Design safety and quality gates for agent-authored content: rule packs, static analysis, confidence thresholds, structured verdicts, and bounded suppression

  • Create CLIs, libraries, and MCP integrations that other repositories adopt: and that run in local development and CI

  • Integrate tooling into GitHub Actions and other CI workflows, including: secrets, annotations, exit codes, and artifacts

What they're looking for

  • + years of experience building production software, developer tools, internal platforms, or automation systems
  • Software engineering fundamentals in API design, testing, error handling, and maintainability
  • Experience building CLIs, libraries, test infrastructure, static analysis, or CI/CD workflows
  • Ability to design systems that are usable by developers and reliable in automation
  • Experience reasoning about correctness and safety with ambiguous input,: nondeterministic output, false positives, or untrusted content
  • Comfort in an evolving R&D environment where the right abstraction emerges through prototypes and feedback
  • Written and verbal communication, including explaining technical trade-offs: and aligning stakeholders across teams