Staff Software Engineer, Agent Orchestration

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

Requirements

• ▹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

Nice to have

• ▹Experience building or working on agent harnesses, orchestration layers, or execution frameworks
• ▹Thinking in terms of control planes, feedback loops, and system-level optimization, not just features
• ▹Enthusiasm for diagnosing failure modes and iterating toward measurable improvements
• ▹Deep care for production quality — reliability, safety, and scalability, not just making systems work
• ▹Motivation to push the frontier of how intelligent systems behave in the real world

Soft skills

What we offer

• ▹Take-what-you-need vacation policy (subject to local requirements; UK employees receive 25 days of statutory leave)
• ▹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
• ▹Daily lunches and snacks in the office

About the company

Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Its technology enables enterprises like Avis Budget Group, Block's Cash App and Square, Chime, Oura Health, and Hunter Douglas to deploy AI agents across voice, chat, email, SMS, and other channels. Decagon is backed by investors including a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures.