Director, Technical Product Marketing in London

Radiant is looking for a Director of Technical Product Marketing to turn our technical advantages into clear, credible, market-facing narratives. This is an embedded role for someone who wants to be close to the product, close to engineering, and close to the real substance of what we are building - end to end datacenters. You will spend time with infrastructure, product, engineering, solutions, partnerships, and the leadership team to understand how Radiant works, why it matters, and how to explain it to sophisticated technical and business audiences.

We are looking for someone who can extract the technical truth from the building, understand what is differentiated, and turn that into blogs, web pages, whitepapers, case studies, executive thought leadership, speaking narratives, and product storytelling. This is not a conventional PMM role centered only on launch checklists, personas, and sales decks. Our audience is hyperfocused and well understood. Nor is it a technical writing role.

The right person is technically curious, commercially sharp, and an exceptional writer. Ideally they have coding experience or Claude code experience. They know how to sit with engineers, ask good questions, pressure-test claims, and translate complex infrastructure into language that is accurate, compelling, and useful.

What You’ll Own

• Technical Product Narrative: You will own the development of Radiant’s technical product narrative across our platform, infrastructure, and market-facing offerings. You will work with product and engineering teams to understand what we are building, how it works, what problems it solves, and why it is different. You will translate that understanding into clear positioning, messaging, product explanations, and technical narratives for customers, partners, analysts, executives, and the broader market.
• Technical Content & Thought Leadership: You will create the core technical content that gives Radiant’s hyperscaler end customers confidence that we are who they should trust. This includes technical blog posts, product pages, solution pages, whitepapers, reference architecture content, case studies, customer stories, launch narratives, technical explainers, executive essays, and long-form thought leadership.
• Web & Product Copy: You will help shape the language on Radiant’s website and product pages. That means turning internal product reality into strong external copy: what the product does, who it is for, why it matters, how it is different, and what proof points support the claim.
• Speaking & Executive Substance: You will support Radiant’s speaking and executive communications efforts by creating the technical spine behind talks, panels, submissions, keynotes, podcasts, executive posts, and strategic narratives.
• Case Studies, Customer Stories & Proof Points: You will help build Radiant’s library of customer, partner, and product proof. That includes working with sales, solutions, customer teams, and leadership to identify strong stories, extract the technical and business value, and turn those stories into case studies, web copy, blogs, presentations, and sales-supporting narratives.
• Internal Translation: You will act as a bridge between engineering, product, sales, marketing, and leadership.

What Success Looks Like

In the first 90 days, you will have built strong working relationships with product and engineering, developed a clear understanding of Radiant’s technical architecture and product priorities, and shipped a meaningful set of market-facing assets. You will have created a repeatable process for extracting technical stories from the organization and turning them into blogs, web copy, technical narratives, executive content, speaking inputs, and longer-form assets.

Over time, success means Radiant has a deeper, sharper, more technically credible voice in the market. The website explains the product more clearly, our blogs are technical and differentiated.

Who You Are

• You have 8 - 12+ years of experience in technical product marketing, product marketing, technical content, developer marketing, infrastructure marketing, solutions marketing, or a closely related role.
• You have worked in technical B2B markets such as cloud infrastructure, AI infrastructure, developer platforms, data infrastructure, datacenters, enterprise software, or high-performance computing.
• You are an excellent writer. You can write product pages, blogs, whitepapers, case studies, executive essays, launch narratives, and technical explainers with minimal handholding.
• You are technically fluent enough to work directly with product managers, engineers, architects, and technical executives.
• You have strong product judgment. You can distinguish a feature from a benefit, a claim from a proof point, a capability from a differentiated position, and a generic market trend from a useful point of view.
• You are comfortable working in the building. This role requires proximity to the teams building the product.
• You are highly autonomous. You do not wait for perfect briefs.
• You have strong editorial taste. You know when copy is too generic, too inflated, too shallow, or too complicated.
• You are commercially aware. You understand that technical marketing exists to help the market understand the company, help customers evaluate the product, help sales tell the story, help executives communicate with clarity, and help the company build credibility.

Ideal Background

• The strongest candidates may come from high-growth B2B technology companies, AI infrastructure companies, cloud platforms, developer tools companies, cybersecurity companies, data infrastructure companies, telecom infrastructure businesses, semiconductor ecosystems, or technical agencies with deep infrastructure experience.
• Experience working with engineers, architects, product leaders, founders, or technical executives is strongly preferred.
• Experience writing about complex technical topics for external audiences is required.
• Experience with AI, GPUs, Kubernetes, networking, datacenter infrastructure, cloud platforms, MLOps, sovereign AI, or enterprise infrastructure is a major plus.

Why should you join us?

What sets us apart is our blend of modern technology, competitive benefits, and an open, welcoming work culture that enables our people to thrive. Here are just some of the great things you can expect from us:

• 25 days of annual leave
• A culture that emphasises results over hierarchy, process & ego: we place great emphasis on the quality, ingenuity and creativity of work.
• Open communication, regular feedback: we value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and a growth mindset makes us better together.
• Learning Time: we all have dedicated learning time to focus on new skills, projects or interests that lay outside of your day-to-day job.
• Health & Wellbeing: we want everyone to feel healthy and happy, so we offer private medical insurance via Bupa.
• Cycle to Work Scheme: we're committed to building a sustainable business, so we encourage cycling to work.
• Gympass subscription to a variety of gyms and wellbeing apps
• Participation in the company shares program
• Enhanced parental pay & leave

Diversity, Equality, Inclusion and Belonging

We are an equal opportunity employer and we strive to reduce unconscious bias throughout our hiring process. All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status. To ensure our recruitment processes provide an equal opportunity for all applicants to succeed, we encourage you to let us know if there are any adjustments that we can make.