Product Marketing Manager - #147253

Department: Marketing

Location: Oxford

Description

Operates from: Hybrid working, with visits to HQ in Oxford at least once a month.

About Diffblue
Diffblue is one of the most powerful use cases for artificial intelligence in the world today. Developers typically spend 25% to 50% of their time writing unit tests and it is not a task most enjoy. Our product – Diffblue Cover – is a generative AI agent that automatically writes and maintains unit tests for Java applications. It works 250 times faster than a human and is 26x more productive than an experienced developer using the latest LLM-based code assistant tools like Copilot. We enable our customers to ship better quality software faster and with less toil for developers.

Diffblue spun out of the University of Oxford and is backed by leading UK VCs like IP Group, Albion VC, and Parkwalk as well as Citi (also a customer). Our software is used by some of the most demanding and sophisticated software development organisations in the world, including BNY, Capital One, S&P Global, ING, and Workday.

As an early-stage company in one of the hottest software markets, Diffblue offers a fast-paced, customer-focused, empowering, and collaborative working environment. If you’re interested in a company where your skills and effort can make a difference every day, then you should check us out.

The Role
We’re hiring a Product Marketing Manager who will own the funnel strategy, messaging, and content that drives PoV win rates and expands our reach into Java teams and platform engineering leaders. This is a high-impact IC role for someone who thrives on understanding customer challenges and creating compelling content that connects the technical and business benefits of our products with the buyer journey.
You will work closely with Solution Engineering, Sales, and Product to define positioning, build compelling content, and operationalize technical win stories that resonate with architects, platform owners, and modernization leads.

Key Responsibilities

Positioning & Messaging

• Develop differentiated messaging frameworks that speak to application modernization, test automation, and platform velocity.
• Own competitive positioning and mutation testing frameworks
• Translate proof-of-value data into compelling business cases for legacy coverage uplift

Content Development

• Write and produce mid- to bottom-funnel collateral:
  • Technical battlecards, customer validation slide decks, and objection-handling guides
  • Solution briefs for architects and platform owners
  • Video content and webinar production showing the product and customer success
  • Thought-leadership content that aligns with company vision and strategy
  • Success criteria templates for PoVs
• Partner with SEs to turn customer outcomes into win stories and best-practice templates
• Contribute to demo scripts, landing pages, and educational content when needed

Sales & GTM Support

• Enable Sales and SEs with tools to accelerate PoV cycles and close technical wins
• Collaborate with AEs on strategic accounts to tailor solution messaging
• Collaborate with Demandgen on acquisition of new leads.
• Inform pricing and packaging discussions for legacy-focused use cases
  
  

Skills, Knowledge and Expertise

• Have at least 3 years of B2B SaaS product marketing experience, ideally in DevTools, testing, or developer platforms.
• Can learn to speak fluently and conceptually about Java, Spring Boot, Maven/Gradle, unit testing frameworks, SonarQube, CI/CD, etc.
• Have built sales collateral from scratch and can show samples of win-oriented content
• Are energized by legacy code challenges, application refactoring, and helping platform engineers succeed
• Have worked closely with Solution Engineers and AEs on proof-of-value cycles
• Are a clear, structured thinker who loves turning ambiguity into crisp messaging and can simplify technical complexity and connect it with compelling business needs
• Write with clarity, brevity, and credibility,especially for technical buyers and developers

Optional but highly Desirable

• Prior experience marketing to Staff+ Engineers, Platform Leads, or QA leaders
  Familiarity with mutation testing, SonarQube, test strength/indexing metrics, or coverage gating
• Understanding of DORA metrics and DevOps transformation narratives
• Demonstrated ability to differentiate against LLM-based tools (e.g. GitHub Copilot)
  
  

Benefits

You’ll get to work in one of the hottest tech startups in the world of deep tech AI for code, applying state-of-the-art program analysis and synthesis technology to tough problems faced by development teams at the world’s leading companies. Company benefits include:

• Competitive package, including share options
• Private health and dental plans (including 24/7 virtual GP service, additional cancer care and mental health cover)
• 8% non-contributory pension
• Life insurance & Income Protection schemes (including additional medical, wellbeing support)
• 25 days annual leave + Bank holidays
• Enhanced family-friendly benefits
• Flexible working
• Annual eye tests and £50 contributions towards glasses
• Cycle to work scheme

While we expect the future of work to continue to be a hybrid model working both remotely and in-office, we do have a great environment in our Oxford-based head office with beautiful open-plan space with lots of natural light.