Staff Software Engineer, Agent Development

Decagon•San Francisco, CA

6h•Onsite

About The Position

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. About the Team The Agent Building team creates the platform that customers use to build, maintain, and improve their AI agents. We transform complex engineering work into intuitive self-serve products, making sophisticated AI capabilities accessible to both technical and non-technical Customer Experience teams. About the Role You'll be a technical leader for a full-stack product engineering team, shaping the platform that empowers customers to create and optimize their AI agents. This means working closely with the Agent Software Engineering and Agent PM teams to understand current workflows, then defining technical strategy and establishing patterns that scale those capabilities across our customer base. You'll work day-to-day with the core product and design teams, joining discovery, defining requirements, reviewing designs, and iterating through launch. Beyond building features, you'll mentor engineers as the team grows, supervising projects and providing technical direction for their work.

Requirements

6+ years building full-stack software products, with demonstrated impact on technical direction and strong product thinking
Deep expertise in TypeScript and/orPython, with strong architecture and system design skills
Proven ability to design abstractions and platforms that serve diverse use cases elegantly
Track record of leading technical initiatives and driving consensus across teams
Experience balancing technical excellence with rapid iteration and customer needs
Strong product intuition and history of translating user feedback into technical solutions
History of mentoring engineers and establishing technical standards

Nice To Haves

Experience building and scaling developer tools, APIs, platforms, or infrastructure products
Familiarity with LLMs, AI agent systems, prompt engineering, or building products on top of AI capabilities
Familiarity with asynchronous programming and building scalable systems
Experience with observability, data visualization, or analytics products
History of establishing technical standards, design patterns, or architectural principles adopted across teams

Responsibilities

Drive technical direction for the Agent Building platform, establishing patterns and architecture that scale with our customer base and features
Lead complex initiatives from ambiguous requirements to shipped products
Create AI-powered tools that enable non-technical teams to create and manage sophisticated workflows without writing code
Build monitoring and analytics that surface actionable insights, helping customers identify where their agents can improve
Partner directly with customers and cross-functional teams to identify opportunities and validate product direction
Mentor engineers and elevate team practices through code review, technical design, and knowledge sharing