Software Engineer, Agents
Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on May 6, 2026. Decagon scores A on the Alion truth index.
About Decagon
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 Engineering team at Decagon deploys mission-critical AI agents to our customers that impact millions of users and directly drive Decagon’s growth. You will build on our industry-leading AI agent platform, collaborate directly with customers and use your own creativity to devise long-term, scalable solutions.
Our mission is to deliver magical support experiences - AI agents working alongside human agents to help users resolve their issues.
About the Role
On the Agent Engineering team, you’ll have complete ownership and autonomy in building and shipping best-in-class AI agents, from initial implementation through continuous iteration. You’ll work directly with leaders across industries like finance, healthcare and hospitality, solving their users’ needs with reliable and intuitive AI agents.
Engineers here own their work end-to-end and are trusted to make a real impact. This role is for someone who dives deep into complex system challenges and builds elegant solutions that scale to millions of users.
In this role, you will
Design and build AI agents that outperform human agents in managing complex customer interactions and driving customer retention
Identify cross-customer trends that guide the evolution of Decagon’s agent building platform and research efforts
Experiment with and run evaluations on the latest text and voice models, then integrate them at scale with large enterprise-grade customers
Your background looks something like this
Have 3+ years of industry experience in software engineering
Proficiency with Python, Typescript and asynchronous programming
A high degree of comfort digging into system failures within deep technology stacks using any tool necessary
Even better
Prior experience working with multi-modal models
Benefits
Medical, dental, and vision benefits
Generous time off, including 25 days annual leave, 8 UK public holidays, and a company-wide holiday break
Daily lunches, dinners and snacks in the office to keep you at your best
Compensation
£125,000 - £180,000 + Offers Equity
Benefits
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.