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Principal Platform Engineer

London💼 Full-time🗓 2026-03-24 → 2026-09-26

Core

Building and rolling out an internal AI developer platform using agentic, AI-assisted workflows to enable engineers to design, ship, and operate software.

Role type

Principal Platform Engineer (0→1 build, hands-on technical leadership)

Builds

Internal AI developer platform, agentic workflows, and supporting tooling for engineering teams

Domain

Software Engineering / AI Development Platforms / Backend Systems

Deliverable

production ML models | infrastructure

Required skills

Internal developer platform architecture, agentic/AI-assisted development workflows, backend engineering (Java or C#), workflow engines (AWS Step Functions, Azure Durable Functions, Temporal, Conductor, Dagster), platform adoption strategy

Preferred skills

Full-stack exposure, product-led SaaS background, strong internal developer tooling culture

Technologies

Java, C#, AWS Step Functions, Azure Durable Functions, Temporal, Conductor, Dagster

Responsibilities

Define architectural direction for the platform, build and ship initial components, drive organic adoption across engineering teams, scale platform to multiple teams, establish ownership models for agents and tooling

Seniority

Principal, hands-on IC with strategic scope

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