Staff Software Engineer, Agent Platform & Orchestration

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

Benefits offered by this job

Medical, Dental, and Vision benefits

Life Insurance and Disability Benefits

Retirement Plan (e.g., 401K, pension)

Parental Leave

Fertility and family building benefits

Wellness stipend

Daily lunches and snacks in the office

Take what you need vacation policy

Job summary

Decagon is seeking a Staff Software Engineer for the Agent Platform to design and build distributed systems powering Decagon agents in real-world conversations. You will own end-to-end execution frameworks and model orchestration, influencing how agents reason, take actions, and deliver outcomes across millions of interactions.

You will collaborate with Research, Infra, and Product teams to ship improvements safely and at scale, focusing on latency, reliability, and observability as model

Qualifications

• Experience building distributed systems or backend platforms in production.
• 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.
• Track record of improving system reliability, performance, and observability.

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

Production experience

Data-driven decision making

Observability

Job description

Decagon is seeking a Staff Software Engineer for the Agent Platform to design and build distributed systems powering Decagon agents in real-world conversations. You will own end-to-end execution frameworks and model orchestration, influencing how agents reason, take actions, and deliver outcomes across millions of interactions.

You will collaborate with Research, Infra, and Product teams to ship improvements safely and at scale, focusing on latency, reliability, and observability as model