Enterprise AI Agent Builder & Delivery Engineer

Neura Market; Greater London; On-site; GBP 90,000 - 125,000; Full time

Benefits offered by this job

Vacation days 25

Medical/Dental/Vision

Life Insurance

Retirement plan

Parental Leave

Fertility benefits

Office lunches

Job summary

Decagon in-office is seeking a Customer Engineer, Agent Builder to own end-to-end AI agent builds for strategic customers, translating requirements into actionable build plans and delivering enterprise-grade agents.

You will collaborate with Agent PMs, Engineering, and GTM teams, design robust integrations, guardrails, and evaluation frameworks, and interact with senior technical stakeholders to ensure successful deployments.

Qualifications

• 5+ years in a technical customer-facing role with delivery focus.
• Fluent in English and French, both written and spoken.
• Strong software skills: coding, APIs, and end-to-end integrations.

Responsibilities

• Own end-to-end architecture and execution of AI agent builds for enterprise customers, from systems design and initial scoping through implementation, evaluation, and production deployment.
• Design and engineer the core agentic logic governing agent behavior, applying engineering principles to optimize quality, reliability, and correctness across non‑deterministic model outputs.
• Engineer and validate layered guardrails and supervisory controls to ensure safe, compliant, and predictable agent performance across real‑world scenarios.
• Architect, build, and test integrations with customer systems (e.g., data pipelines, CRMs, ticketing systems), including building the tools, APIs, and workflows needed for reliable deployments at scale.
• Interface with senior technical stakeholders at customers to define success criteria and system requirements, and drive technical delivery against timelines.
• Diagnose, debug, and resolve both probabilistic and technical failures through root‑cause analysis of execution traces, error logs, and model behavior.
• Design evaluation and regression‑testing frameworks to validate agent behavior against ground truth and guard against performance drift.
• 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 consistent, repeatable, best‑in‑class agent builds.

Skills

5+ years in technical customer-facing

English and French fluency

APIs and integrations

Communication with senior tech

Fast-paced, Ambiguity handling

Education

CS degree or equivalent

Tools

APIs

CRM integrations

Job description

Decagon in-office is seeking a Customer Engineer, Agent Builder to own end-to-end AI agent builds for strategic customers, translating requirements into actionable build plans and delivering enterprise-grade agents.

You will collaborate with Agent PMs, Engineering, and GTM teams, design robust integrations, guardrails, and evaluation frameworks, and interact with senior technical stakeholders to ensure successful deployments.