Member of Technical Staff Research Software Engineer Safety Evaluations Infrastructure

Reflection is an AI research lab building open frontier models and a full AI stack for developers, enterprises, and public-sector users.

New York, United States
About Reflection

Reflection develops open-weight AI models, open-source software for customizing and running agents, AI-factory infrastructure, and related solutions. Its current research emphasizes large language models, reinforcement learning, and agentic reasoning.

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Skills

About the Role

You will design, build, and own secure infrastructure for sensitive model evaluations. You will create sandboxed environments, controlled data pipelines, access controls, audit logging, evaluation orchestration tooling, and capability-measurement systems. You will improve platform reliability, security, and developer experience.

Requirements

  • Software engineering expertise in Python
  • Experience building secure sandboxed or isolated execution environments
  • Knowledge of least privilege need-to-know access RBAC secrets management encryption audit logging and defense in depth
  • Experience building data pipelines for sensitive or restricted data
  • Ability to own ambiguous cross-functional problems end to end
  • Discretion integrity and sound judgment for sensitive projects

Responsibilities

  • Design and build secure sandboxed infrastructure for sensitive model evaluations
  • Build controlled data pipelines and storage for sensitive evaluation material
  • Translate evaluation designs into reliable and scalable systems
  • Build evaluation orchestration tooling and harnesses
  • Develop infrastructure to measure AI capability uplift
  • Implement guardrails monitoring and compartmentalization
  • Write production-quality Python for evaluation systems
  • Improve platform reliability security and developer experience

Benefits

  • Stock options
  • Medical dental vision and life insurance
  • Annual wellness allowance
  • Daily office lunch and dinner
  • 22 weeks of paid parental leave
  • Unlimited paid time off in the United States
  • 30 days of vacation in the United Kingdom
  • Visa sponsorship support
  • Regular off-sites happy hours and team celebrations
Member of Technical Staff Research Software Engineer Safety Evaluations Infrastructure at Reflection | JobStash