Senior Software Engineer, AI Developer Experience

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, Block’s Cash App and Square, Chime, Oura Health, and Hunter Douglas to deploy AI agents that power personalized, deeply satisfying interactions across voice, chat, email, SMS, and every other channel.

We’re building a future where customer experiences are being redefined from support tickets and hold music to faster resolutions, richer conversations, and deeper relationships. We’re proud to be backed by world-class investors who share that vision, including a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures, along with many others.

We’re an in-office company, driven by a shared commitment to excellence and velocity. Our values — Just Get It Done, Invent What Customers Want, Winner’s Mindset, and The Polymath Principle — shape how we work and grow as a team.

The Infrastructure team builds and operates the foundations that power Decagon: networking, data, ML serving, developer platform, and real‑time voice. We partner closely with product, data, and ML to deliver high‑scale, low‑latency systems with clear SLOs and great developer ergonomics.

We’re looking for a Senior Software Engineer to help build and evolve our internal developer platform—everything from CI/CD and release automation to observability standards, platform tooling, and developer workflows that remove friction.

This role is for someone who loves making other engineers faster: reducing build times, eliminating flaky tests, creating paved roads for service creation/deployment, and raising the bar on operability by default. Roles like this often combine “builder” energy with strong empathy for how engineers actually work.

• →

  We proudly offer the following benefits for our full-time employees:

  • →

    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 to keep you at your best

  • →

    Take what you need vacation policy (subject to local requirements; UK employees receive 25 days of statutory leave)

  These benefits are described in more detail in Decagon’s policies, may vary by location, and can change at any time according to applicable compensation and benefits plans.

• Build coding agents, harnesses, and cloud execution infrastructure.

• Give agents safe access to code, tools, tests, and internal systems.

• Create reusable primitives for autonomous software development.

• Apply AI to planning, design, implementation, testing, and review.

• Turn successful experiments into repeatable engineering workflows.

• Build paved roads for agent-driven development across teams.

• Improve validation of human- and agent-generated changes.

• Build agent-based testing, evaluation, and review systems.

• Push correctness checks earlier in the development loop.

• Design CI/CD, local development, and platform tooling for humans and agents.

• Build APIs, CLIs, templates, and automation that agents can operate directly.

• Remove friction from build, test, and release workflows.

• Build frameworks and platforms for quickly creating internal tools, dashboards, and agents.

• Give teams reusable primitives to build solutions for their own workflows.

• Turn one-off internal tooling into scalable, shared capabilities.

• Identify high-leverage engineering workflows to automate or augment with AI.

• Own architecture, rollout, and adoption across engineering.

• Measure success through faster iteration and greater engineer leverage.