Senior Engineer, Agent Platform & Orchestration

Decagon; San Francisco (CA); On-site; USD 200,000 - 400,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

Life Insurance

Disability Benefits

Retirement Plan

Parental Leave

Fertility benefits

Wellness stipend

Office lunches

Flexible vacation policy

Job summary

Decagon is seeking a Senior Software Engineer for the Agent Platform to design and build the systems that govern how Decagon agents operate in real-world environments.

You will own distributed runtime frameworks, model orchestration, and experimentation platforms to ensure agents are fast, reliable, and continually improving across millions of interactions. This role demands leadership in production systems and collaboration with Research, Infra, and Product teams.

Qualifications

• Strong experience building distributed systems or backend platforms in production environments.
• Comfort in ambiguous, fast-moving environments with rapid iteration cycles.
• Experience owning systems end-to-end, from design through production and iteration.
• Familiarity with experimentation, evaluation, or data-driven product improvement loops.
• A track record of improving system reliability, performance, and observability.
• Ability to debug complex systems and identify root causes of failures.

Responsibilities

• Design and evolve agent harnesses that power different product experiences.
• Build core runtime systems, including AOP execution and multi-model orchestration.
• Develop control-plane logic for routing, planning, and tool invocation with strong safety guarantees.
• Optimize agent systems for latency, reliability, and production correctness.
• Analyze real-world failures and use data to drive iterative improvements.
• Build and operate online experimentation (A/B testing) and contribute to offline evaluation frameworks.
• Improve observability, testing, and simulation systems to ensure safe, measurable progress.
• Contribute to voice and real-time systems (e.g., transcription pipelines, turn-taking, latency improvements).
• Continuously adapt orchestration systems as model capabilities evolve.

Skills

Distributed systems

Backend platforms

Ambiguous environments

End-to-end ownership

Experimentation

Observability

Debugging complex systems

Job description

Decagon is seeking a Senior Software Engineer for the Agent Platform to design and build the systems that govern how Decagon agents operate in real-world environments.

You will own distributed runtime frameworks, model orchestration, and experimentation platforms to ensure agents are fast, reliable, and continually improving across millions of interactions. This role demands leadership in production systems and collaboration with Research, Infra, and Product teams.