Senior AI Engineer - Build Autonomous Agent Pipelines

Zealous Agency; England; On-site; GBP 90,000 - 130,000; Full time

Job summary

Zealous Agency is seeking a senior AI Platform Engineer to own and enhance core AI systems. You will design and optimize agent pipelines coordinating LLMs and analysis tools, shaping how autonomous agents reason with evidence and scale in a fast-growing startup.

You will work directly with the founders, taking responsibility for the platform and delivering impactful results with a small, highly capable team. Speed, reliability, and autonomy are essential.

Qualifications

• Experience building end-to-end AI systems with autonomous agents.
• Ability to design pipelines coordinating LLMs and analysis tools.
• Proven track record in testing non-deterministic AI systems.

Responsibilities

• Design and improve core AI agent pipelines and system architecture.
• Own platform responsibility and drive engineering decisions with founders.
• Collaborate closely with a small, high-caliber team to deliver fast, reliable features.

Skills

Python

LLMs

AWS

Observability tooling

Testing non-deterministic AI systems

Agent orchestration frameworks

Tools

LangGraph

LangChain

Langfuse

Datadog

Job description

Zealous Agency is seeking a senior AI Platform Engineer to own and enhance core AI systems. You will design and optimize agent pipelines coordinating LLMs and analysis tools, shaping how autonomous agents reason with evidence and scale in a fast-growing startup.

You will work directly with the founders, taking responsibility for the platform and delivering impactful results with a small, highly capable team. Speed, reliability, and autonomy are essential.