AI Technical Writer / Documentation Engineer (AI) in London

About hyperexponential (hx)

At hyperexponential, we are building the AI-powered platform that enables the world’s most critical decisions in a $7 trillion industry. Our platform brings together data, AI, and human expertise to give insurers the fastest path from submission to decision, helping them move faster, act smarter, and take on more risk with confidence.

Backed by a16z, Highland Europe, and Battery Ventures, we are scaling globally - already trusted by nearly 50 of the world’s largest insurers, with zero churn and billions in premiums flowing through hx.

What makes hx different is the people who build it. Here, impact isn’t tied to title or tenure; it’s defined by the challenges you take on and the discipline you bring.

About Technical Writing at hx

At hx, world-class documentation is a product in its own right: it drives adoption, enables customer self-service, and reduces friction for internal teams. As our products scale and our AI agents depend on well-structured knowledge, documentation becomes a critical part of how we deliver clarity and confidence to users.

This role will sit at the intersection of engineering, product, and customer teams, creating and governing documentation that is accessible, structured, and AI-ready. You will be building this function from the ground up – our first dedicated technical writer – so you will shape both the standards and the workflows that support adoption across hx.

You will work hands-on to design documentation systems, implement AI-assisted authoring, and enforce consistency across diverse content sources.

What you’ll be doing:

• Designing and delivering structured, AI-powered documentation that makes hx products easy to understand, adopt, and scale.
• Implementing documentation standards, workflows, and governance across teams to ensure consistency and discoverability.
• Partnering with engineering, product, and customer teams to capture knowledge and translate it into accessible, high-impact content.
• Building content pipelines and structures that support AI-powered search, question-answering, and automated validation.
• Introducing and refining automation and feedback mechanisms to continuously improve documentation quality.
• Driving adoption of documentation practices that reduce support needs and accelerate onboarding for users.

What you’ll need to have done:

• Built technical documentation in a fast-paced software environment that improved adoption or reduced support queries.
• Applied AI/automation (e.g. LLMs, workflow tools like Zapier/n8n, Grammarly, Claude, or similar) to streamline content workflows or improve quality.
• Designed or restructured documentation systems to be scalable, maintainable, and discoverable.
• Partnered with engineers, product managers, or customer teams to capture technical detail and translate it for diverse audiences.
• Established or championed standards for tone, style, and structure, ensuring consistency across multiple contributors.
• Owned end-to-end delivery of documentation projects, from requirements gathering through to validation and rollout.

You’re unlikely to thrive here if:

• You prefer static documentation over evolving, AI-driven workflows.
• You shy away from experimenting with AI tools and workflows.
• You are uncomfortable taking ownership of standards, quality, and consistency in your work.

Compensation

At hx, we are committed to salary transparency. You will always have clarity on pay early in the process. Our approach is to design compensation that’s competitive in the market, fair across teams, and aligned with the impact our people make.

Benefits:

• £5,000 training and conference budget for individual and group development.
• 25 days of holiday plus 8 bank holidays (33 days total).
• Company pension scheme via Penfold.
• Mental health support and therapy via Spectrum.life.
• Individual wellbeing allowance via Juno.
• Private healthcare insurance through AXA.
• Income protection and Life Insurance.
• Cycle to Work Scheme.

Additional perks:

• Top-spec equipment (laptop, screens, adjustable desks, etc.).
• Regular remote and in-person hackathons, lunch and learns, socials, and game nights.
• Team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry.
• Exceptional opportunities for personal development and growth.

Interview Process:

• Initial call with Talent team (30 minutes).
• Manager Interview (60 minutes).
• Skills Assessment - Home-based task followed by interview (60 minutes).
• Values Interview (60 minutes).

We Offer:

Our commitment to Diversity: hxers are at the centre of everything we build. We recognise there is always more to do, and we take responsibility for shaping a workplace that is not only diverse but genuinely inclusive.

If you’re energised by complexity and motivated to grow, we encourage you to apply and join our global team.

Next steps:

If this opportunity resonates with you, we encourage you to apply or share it with your connections! Our dedicated talent team reviews all applications, and we promise to provide feedback regardless of the outcome.

Please note that background checks will be conducted as part of the hiring process to ensure compliance with our governance policies.