AI Agent Builder - Enterprise Delivery Engineer

Decagon; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Take what you need vacation policy (UK

Medical, Dental, Vision benefits

Life Insurance and Disability Benefits

Retirement Plan (pension)

Parental Leave

Fertility and family building benefits

Daily lunches and snacks in the office

Job summary

Decagon is seeking a Customer Engineer, Agent Builder in the United Kingdom to lead end-to-end AI agent builds for strategic enterprise customers. You will partner with customers and internal teams to translate requirements into build plans and deliver agents that meaningfully impact the customer’s business.

You will work closely with Agent PMs, Engineering, and GTM teams to ensure safe, scalable deployments and high-quality agent configurations in dynamic environments.

Qualifications

• 5+ years of experience in a technical customer-facing role.
• Strong technical foundation: writing code, APIs, and end-to-end integrations.
• Clear communication with senior technical stakeholders, translate requirements into plans.
• Comfort in fast-moving, ambiguous environments shaping solutions as you implement.

Responsibilities

• Own end-to-end execution of AI agent builds for enterprise customers, from initial scoping through launch and iteration.
• Write and maintain key agent-building artifacts, and configure agent behavior to optimize quality, reliability, and business outcomes.
• Configure and validate guardrails to ensure safe, compliant, and predictable agent performance across real-world scenarios.
• Set up, test, and validate customer integrations (e.g., ticketing systems), including building tools and workflows for successful deployments.
• Interface with senior technical stakeholders at customers to define success criteria, gather requirements, and drive delivery against timelines.
• Translate customer needs into clear internal documentation and run tight feedback loops with Engineering to drive platform improvements.
• Partner closely with APMs, Engineering, Design, and Go-To-Market teams to deliver repeatable, best-in-class agent builds.

Skills

5+ yrs customer-facing

APIs experience

Code writing

Stakeholder comms

Education

Computer Science / Eng / Math degree

Job description

Decagon is seeking a Customer Engineer, Agent Builder in the United Kingdom to lead end-to-end AI agent builds for strategic enterprise customers. You will partner with customers and internal teams to translate requirements into build plans and deliver agents that meaningfully impact the customer’s business.

You will work closely with Agent PMs, Engineering, and GTM teams to ensure safe, scalable deployments and high-quality agent configurations in dynamic environments.