Senior Research Engineer, Safety

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Senior Research Engineer, Safety in USA

Decagon
Full time
Email

USA
09/06/2026
Report

San Francisco, CA

Responsibilities

Research and build safeguards against prompt injection, unsafe tool use, sensitive-data disclosure, policy violations, and hallucinated commitments.
Build adversarial evaluations, simulations, red-team datasets, and regression suites based on production failures.
Develop and deploy classifiers, judges, reward signals, post-training methods, and runtime safeguards for safer agent behavior.
Analyze production traces and incidents, identify root causes, test mitigations, and measure their impact.
Partner with Security, Product, Infrastructure, Legal, and customer-facing teams to turn enterprise requirements into scalable safeguards and rollout practices.

Requirements

4+ years of experience in AI/ML engineering, research, or AI safety.
Hands-on experience evaluating, post-training, or deploying language models or agentic systems.
Experience with reinforcement learning, preference optimization, distillation, model routing, and synthetic-data generation.
Experience with adversarial testing, model red teaming, prompt injection, policy enforcement, privacy, or safe tool use.
Fluency in Python and modern ML tooling, with the engineering depth to ship production systems.
Ability to own ambiguous, high-stakes technical problems and make clear risk and product tradeoffs.
Preferred: experience building safeguards for high-stakes or regulated enterprise workflows.
Preferred: familiarity with human-in-the-loop review, incident response, or responsible ML rollout frameworks.

Benefits

Medical, dental, and vision benefits for employees and families.
Life insurance and disability benefits.
Retirement plan, such as a 401K or pension.
Parental leave.
Fertility and family-building benefits through Carrot.
Monthly wellness and lifestyle stipend.
Daily office lunches and snacks.
Take-what-you-need vacation policy; UK employees receive 25 days of statutory leave.
In-office work arrangement.

Salary: $200k - $400k/yr

Decagon

Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Our technology enables industry-defining enterprises like Avis Budget Group, Chime, Oura Health, 1-800-FLOWERS.COM, and Hunter Douglas to deploy AI agents that power personalized, d...

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