Senior Technical Writer Product design London

Technical Writers at Checkout.com help build the next generation of financial products and online payment solutions through clear, consistent, quality technical content. Reporting directly to the Senior Manager of Tech Writing, you’ll work with our growing team of technical writers and work on a rich variety of projects across our various content domains (technical documentation, API reference, support site). You’ll liaise with other writers, designers, marketers, and stakeholders of varying seniority at the intersection of diverse functions including Design, Product, User Research and Engineering.

You’ll also have experience working on technical product content and API or SDK references, adhering to a consistent style. You’ll be a self‑driven and confident writer with experience in managing stakeholders and advocating for our users. You’ll have a keen interest in technology and the role that good written content plays in facilitating successful product integrations. You’ll have a strong understanding of Git and the Docs‑as‑Code approach, and knowledge of the OpenAPI (OAS) specification. You’ll be a keen adopter of cutting‑edge processes and technologies, including AI, using them as a tool to improve individual and team output.

About you

• You think in systems: you can see the big picture and how your work fits in.
• You can think strategically as well as tactically, able to make informed trade‑offs to achieve the best results in the short and long term.
• You put users at the heart of your work and understand the value of accessible content design.
• You understand the different needs of different content audiences – for example, you’ll be writing for developers, business analysts, and payment operation specialists.
• You build strong working relationships and value feedback.
• You’re able to navigate uncertainty and define clear objectives and timelines.
• You’re accountable, always reach for better, and build trust.
• You’re self‑motivated and can work independently – we’ll trust you to take the initiative.
• You place quality over speed, but you iterate and improve as swiftly as possible.
• You love learning – you’re not the finished package, but you have ideas on how to get there; and teaching – you’re willing to share your knowledge and skills with the team to help us grow.

We’d like to see

• Experience in online payments and/or in a Software‑as‑a‑Service (SaaS) business.
• A strong understanding of Git and the Docs‑as‑Code approach and knowledge of the OpenAPI (OAS) specification.
• Experience documenting complex APIs.
• Ability to read code in at least one programming language.
• Familiarity with JSON, YAML, and Markdown.
• Experience in leveraging content analytics and user research.
• You’re open and curious about AI and how it can be used to optimize processes and improve content.

The first 6 months

• Month 1 - you’re familiar with the technical documentation and support site repository structures and are comfortable fixing minor issues across content pages. You’ve also met with members from across the product teams and have built a foundational understanding of Checkout’s various products and services.
• Month 2 - you’re familiar with the API reference repository structure and can comfortably make changes to API documentation. You’re also regularly picking up new work from our team’s project board and have begun tackling more complex projects already scoped by other members of the team.
• Months 3 and 4 - you’re beginning to independently research and document new feature shipments. You’re also regularly reviewing contributions to the documentation from other writers and other internal contributors, and offering meaningful feedback.
• Month 5 - you’re a proficient writer, comfortably leveraging our tools and processes and beginning to work autonomously in your product area. You can confidently advocate for our users.
• Month 6 - you’re fully comfortable working in your product area and have a good understanding of our users and how best to serve them. You’re familiar with the research and data available to us, and are using it to inform your approach to documentation and continuous improvement.