Lead Generative AI Engineer — Enterprise LLMs at Scale

Harnham; Greater London; Hybrid; GBP 104,000 - 127,000; Full time

Benefits offered by this job

Hybrid work

Annual bonus

Enhanced parental leave

Ownership of AI initiatives

High visibility

Job summary

Harnham in London is seeking a Lead AI Engineer to own design, architecture, and delivery of production-grade Generative AI solutions at scale. You will influence technical strategy and drive measurable business outcomes within a fast-paced AI function.

You will lead end-to-end AI projects, build LLM-powered applications, and establish standards while collaborating with engineering, security, data protection teams to ensure governance and observability.

Qualifications

• Experience delivering Generative AI solutions into production environments.
• Leadership of AI projects end-to-end, from discovery through deployment.
• Designing scalable AI architectures within enterprise environments.
• Building LLM-powered applications, RAG solutions, and agent-based systems.
• Software engineering fundamentals, including APIs, distributed systems, and cloud platforms.
• Technical decision-making in fast-moving or ambiguous problem spaces.
• Working within governance, security, and compliance frameworks.
• Influencing stakeholders and communicating complex technical concepts clearly.

Responsibilities

• Leading the end-to-end delivery of Generative AI and agentic AI solutions.
• Designing and building LLM-powered applications and intelligent automation tools.
• Making key architecture, tooling, and platform decisions across multiple initiatives.
• Evaluating build versus buy approaches and recommending scalable solutions.
• Establishing engineering standards, reusable frameworks, and best practices.
• Ensuring AI systems are production-ready through monitoring, evaluation, governance, and observability.
• Working closely with engineering, security, data protection, and business stakeholders.
• Providing technical leadership and mentoring across AI workstreams.
• Driving AI initiatives that deliver measurable operational and commercial value.

Skills

Generative AI

End-to-end AI projects

LLM-powered applications

Agent-based systems

AWS cloud technologies

Governance and security

Stakeholder communication

Distributed systems

APIs

Tools

APIs

Cloud platforms

Job description

Harnham in London is seeking a Lead AI Engineer to own design, architecture, and delivery of production-grade Generative AI solutions at scale. You will influence technical strategy and drive measurable business outcomes within a fast-paced AI function.

You will lead end-to-end AI projects, build LLM-powered applications, and establish standards while collaborating with engineering, security, data protection teams to ensure governance and observability.