Growth Marketing Manager; B2B

Benefits: 4 day working week in July, August & December, last Friday of each month off and early finish (3pm) on all other Fridays, Pension, Salary Sacrifice Schemes including EVs, Cycle to work etc

Location: UK (Hybrid)

Salary: £50,000–£60,000

Reporting to: Head of Marketing

Whitespace is a UK sovereign AI company delivering mission-ready AI capabilities into Defence, National Security, Government and other regulated environments.

Following our Series A investment, the business is scaling. Our technology is deployed, our partnerships are active, and the focus is now on growing visibility, credibility and commercial impact in a way that reflects the seriousness of the sectors we operate in.

On the back of recent funding, the marketing function is now growing to support the next phase of the business.

We are hiring a Growth Marketer to help deliver an already created marketing strategy and to play a central role in scaling how marketing supports the business.

This role is execution-focused. You will turn strategy into targeted activity, insight into action, and marketing effort into measurable support for sales, partnerships and sector growth.

Account-based marketing will be the primary growth motion, reflecting the nature of our target markets and sales cycles. Alongside this, you will support broader strategic enablement activity that helps the business progress opportunities, partnerships and market positioning.

AI will form part of your day-to-day workflow, used practically to improve speed, focus and quality rather than as an experiment or gimmick.

This is a senior individual contributor role with clear progression as the marketing function continues to scale.

• Execute account-based and sector-focused marketing aligned to sales and partnership priorities
• Translate ICPs, target accounts and buying group insight into focused, credible campaigns
• Support account progression and live opportunities with relevant, tailored marketing activity

• Design and run targeted campaigns across channels, including email, Linked In, partner activity, events and briefings
• Test messaging, formats and approaches, then iterate based on performance and feedback
• Balance credibility and commercial impact in regulated, high-assurance markets

• Support sales, partnerships and sector expansion through targeted, account-led and insight-driven marketing
• Adapt messaging and assets for partner-led activity and joint go-to-market initiatives
• Ensure marketing activity meaningfully supports how the business shows up in the market

• Use AI tools as part of your daily workflow to:
• Accelerate campaign ideation and testing
• Adapt content for different accounts, sectors and audiences
• Support segmentation, prioritisation and insight generation
• Improve reporting, analysis and optimisation
• Apply AI responsibly within clear brand, governance and quality standards
• Contribute to embedding practical, repeatable AI-assisted ways of working within marketing

• Track campaign performance and contribution to account engagement and pipeline
• Produce clear, actionable insight to inform future focus and prioritisation
• Work with existing systems to ensure marketing data is accurate, usable and decision-ready

• Contribute to building repeatable growth playbooks, templates and processes
• Help mature how growth marketing operates as the team and budget expand
• Support the transition from early-stage execution to a more structured growth engine

• 5+ years of experience in B2B growth, demand generation or account-based marketing roles
• Experience marketing into regulated, enterprise or high-assurance environments
• Proven ability to deliver marketing activity that supports commercial outcomes, not just engagement
• Comfortable working closely with sales and partnerships teams

• Practical experience using AI in day-to-day marketing work
• Confident in applying AI to improve efficiency, insight and execution quality
• Strong working knowledge of modern marketing tools and platforms (e.g. Hub Spot, GA4, Linked In)

• A degree or professional qualification in marketing, business or a related discipline is welcome
• CIM, IDM or equivalent professional marketing qualifications are advantageous

However, we recognise that strong growth marketers come from different backgrounds. Relevant experience and proven outcomes will be valued equally where formal qualifications are not held.

We care far more about what you have delivered than how you learned to do it.

• Commercial, pragmatic and outcome-focused
• Comfortable operating in a scaling business with an evolving structure
• High standards for credibility, accuracy and quality
• Willing to test, learn, improve and fail - without losing focus on what matters