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Senior Software Engineer, Agent Platform

Decagon· Engineering
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San Francisco$200k - $400k + equityFull-timePosted 11mo ago

About the role

Senior Software Engineer on the Agent Platform team responsible for designing and building the systems that govern how Decagon agents operate in real-world environments, owning complex distributed systems for agent runtime, model orchestration, and experimentation.

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

Qualifications

  • Strong experience building distributed systems or backend platforms in production environments
  • Comfort working 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

Skills

Required:Distributed systemsEnd-to-end ownershipExperimentation / data-driven decisionsObservability / reliability

Benefits

  • Medical, Dental, and Vision benefits for you and your family
  • Life Insurance and Disability Benefits
  • Retirement Plan (e.g., 401K, pension)
  • Parental Leave
  • Fertility and family building benefits through Carrot
  • Monthly stipend to support your wellness, lifestyle, and work-life balance
  • Daily lunches and snacks in the office
  • Take what you need vacation policy (subject to local requirements; UK employees receive 25 days of statutory leave)
Last updated Aug 5, 2026. Interested? Apply on the company site.

About Decagon

Conversational AI for Customer Experience

Reimagine your customer experience with AI agents, built for the enterprise.

AI agentsCXConversational AICustomer Experienceai-agents-and-applicationsorchestrationvoice-ai-stackwing-list-2026
Company profileWebsite

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