Senior AI-First Platform Engineer

flowengineering; Greater London; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Health, dental, and vision coverage

Flexible time off

Meaningful equity

Competitive salary

Job summary

Flow Engineering is building AI-powered capabilities to help teams author, review, and manage requirements. You will contribute across the stack, from backend integrations to UI hooks, delivering features end-to-end.

You will work with TypeScript/Node.js and Python, integrating modern LLM APIs, vector stores, and evaluation harnesses to ensure scalable, observable, and safe AI workflows in production.

Qualifications

• 5+ years developing production software in cloud environments.
• Hands-on experience with modern LLM providers and tooling.
• Familiarity with prompt design and retrieval-augmented systems.
• Ability to reason about model choices, architectures, and deployment patterns.
• Comfortable with fast-paced, ownership-driven environments.

Responsibilities

• Design and ship AI-powered features like assisted requirement drafting and intelligent suggestions.
• Build agentic workflows to explore designs, simulate changes, and validate requirements.
• Evaluate and integrate language models and tooling, optimizing reliability, latency, and cost.
• Develop and maintain data pipelines, evaluation harnesses, prompt/model management, and observability.

Skills

Production software

LLM tooling familiarity

Prompt design

Retrieval-augmented systems

Safety/guardrails

Tools

OpenAI

Anthropic

Hugging Face

Vector stores

RAG patterns

Job description

Flow Engineering is building AI-powered capabilities to help teams author, review, and manage requirements. You will contribute across the stack, from backend integrations to UI hooks, delivering features end-to-end.

You will work with TypeScript/Node.js and Python, integrating modern LLM APIs, vector stores, and evaluation harnesses to ensure scalable, observable, and safe AI workflows in production.