Context Engineer

Wearefounders; United Kingdom; On-site; GBP 60,000 - 90,000; Full time

Job summary

Wearefounders is seeking a Context Engineer to join the Wizard & Docs team in the United Kingdom. The role blends technical content with AI engineering, requiring you to explain technology clearly and build agents, context pipelines, and knowledge bases.

You'll switch between prose and code, creating content for humans and context for agents, and work across docs, apps, and AI tooling to ship practical solutions that scale.

Qualifications

• Software development experience writing production code.
• Proficiency with LLMs, coding agents, MCPs, and AI engineering tools.
• A portfolio of technical content (personal website, GitHub, YouTube, zip file, etc.).
• Excellent writing and communication skills.
• Experience creating educational content for developers.
• An opinionated take on what makes great docs for humans and AI.

Responsibilities

• Work on our AI Wizard onboarding agent.
• Build custom agents, harnesses, context pipelines, and MCPs and ship them to production.
• Maintain developer docs and knowledge bases using docs-as-code and AI engineering techniques.
• Create technical content across multiple mediums like docs, example apps, or video explainers.
• Collaborate with other teams so they can build on top of our systems.

Skills

Teaching and communication

Full-stack software development

Multidisciplinary

Systems thinking

AI tool building

Bias to action

Tools

LLMs

Coding agents

MCPs

Job description

WHO WE'RE LOOKING FOR

This role combines technical content and AI engineering. You'd be a Context Engineer on the Wizard & Docs team.

Your primary responsibilities:

• Make technologies explainable and legible to both humans and agents
• Maintain and design knowledge bases
• Engineer and orchestrate context pipelines
• Build and ship agents powered by the above

You’ll spend your days switching between prose and code – often in the same hour. You’ll create content for humans and context for agents, and the line between those audiences is shrinking.

The work is inherently multidisciplinary. Natural teachers or strong writers who can code at a high level thrive here.

Specifically, we’re looking for people who:

• Excel at teaching and communication. You’re great at explaining technology in a hands‑on and illustrative way, using writing, building apps, making visuals, or recording video.
• Have real development chops. You have full‑stack software development experience in full‑time roles, side projects, or open source.
• Are multidisciplinary. You switch hats between writing docs, shipping code, organizing knowledge, and building agents or CI/CD pipelines.
• Think in systems. You consider how a doc becomes a skill, how an agent executes it, and how product changes affect the whole pipeline.
• Build agents and AI tools. You have experience building on top of LLMs and strong opinions about context windows, harnesses, and coding agents.
• Bias to action. You are comfortable being reactive, iterating quickly, and shipping PRs as priorities change.

WHAT YOU'LL BE DOING

We’re building a self‑driving AI product on top of a large collection of dev tools, so the surface area of problems we help solve is huge.

• Work on our AI Wizard, an AI agent that onboards thousands of users to PostHog
• Build custom agents, harnesses, skills, context pipelines, and MCPs and ship them to production
• Build systems to maintain our developer docs and knowledge bases using docs‑as‑code and AI engineering techniques
• Create technical content across multiple mediums like docs, example apps, or video explainers
• Create workflows for publishing streams such as the changelog
• Collaborate with other teams so they can build on top of our systems

EXAMPLE PROJECTS

• AI Wizard – an AI onboarding agent that onboards all users to PostHog
• Writer agent – a RAG powered agent system that maintains our docs
• Context mill – a skill assembly and context delivery service
• Developer docs – the company’s knowledge base

WHAT YOU WON'T BE DOING

• Gathering specs and interviewing SMEs to write reference docs
• Running webinars
• Writing newsletters and brand content
• Waiting to be told what to do. No one will hand you a list of tasks or projects to build

YOU MIGHT FIT THIS ROLE IF YOU’RE…

• A technical writer who regularly ships code and builds features
• A developer advocate who builds as much as they write
• A software engineer who’s looking to change track
• A solutions or growth engineer who enjoys creating educational content
• An instructional or content designer who is technically gifted
• Anything else, but you have these traits and skills

REQUIREMENTS

• Software development experience. It doesn’t have to be formal, but you’ll be writing production code, not just code samples
• Proficiency working with LLMs, coding agents, MCPs, and the latest AI engineering tools
• A portfolio of technical content (personal website, GitHub profile, YouTube channel, zip file, etc.)
• Excellent writing and communication skills
• Experience creating educational content for developers
• An opinionated take on what makes great docs for humans and AI