Head of Marketing

Flippy; London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Join a groundbreaking deep-tech company as the Head of Marketing, where you'll lead the marketing strategy for defense and national security markets. This pivotal role focuses on driving growth through innovative campaigns and a strong online presence, while collaborating closely with sales and product teams. Enjoy flexible working, a competitive salary, and the opportunity to shape the future of technology in a mission-driven environment.

Benefits

Private Health Insurance

Enhanced pension scheme

Enhanced parental leave

3 extra days off at Christmas

L&D budget

Regularly scheduled socials

Share options

Qualifications

• Proven marketing leader in defence, dual-use or tech organisations.
• Strong ability to create and manage campaigns contributing to growth.
• Experience in leading high performing marketing teams.

Responsibilities

• Own and manage the full marketing strategy.
• Design integrated campaigns to generate leads.
• Lead the online presence, optimizing SEO/SEM and content.

Skills

Leadership

Strategic Planning

Digital Marketing

Campaign Management

Communication

Education

Experience in defence or tech marketing

Tools

HubSpot

Google Analytics

LinkedIn Ads

Webflow

Job description

Marketing · London · Hybrid

Head of Marketing

About Hadean

Hadean is a deep-tech company building cutting-edge distributed computing technology that powers scalable, secure, and interoperable digital environments. Our platform enables real-time simulation and training, mission rehearsal,command & control and digital twin capabilities — transforming the way defence, government agencies and enterprises plan, train, and make decisions.

We work at the forefront of defence innovation, collaborating with global partners to deliver next-generation capabilities that unlock operational advantage.

The Role

Hadean is seeking a Head of Marketing to take full ownership of our marketing strategy and execution. This is a pivotal, hands-on leadership role focused on driving pipeline growth, brand visibility, and revenue impact across our core defence and national security markets.

You will be responsible for building and executing a high-impact marketing function that supports our commercial goals. You’ll work closely with Sales, Product, and Executive teams to shape messaging, run outbound campaigns, optimise our online presence, and represent the Hadean brand at key industry events.

This is an ideal role for a commercially-minded marketing leader with deep knowledge of the defence ecosystem and a passion for innovative technology.

Key Responsibilities

• Own and execute the full marketing strategy aligned to commercial and revenue goals.
  

• Design and manage integrated campaigns across digital, social, email, and outbound channels to generate high-quality leads and nurture strategic accounts.
  

• Lead and optimise Hadean’s online presence — including the website, SEO/SEM, content, and analytics — to drive inbound interest and market credibility.
  

• Build and maintain a strong events strategy: identify and secure key defence and dual-use tech events, support speaker opportunities, and drive pre/post-event outreach.
  

• Develop clear messaging and positioning that speaks to defence stakeholders, primes, partners, and government buyers.
  

• Collaborate with Sales and BD teams to support ABM, bid/tender efforts, and targeted growth in priority segments.
  

• Establish and track marketing KPIs (e.g., MQLs, CAC, CTRs, ROI), and continuously optimise performance against targets.
  

• Lead and develop the team of high performing marketing professionals.
  

• Own and manage the marketing budget and key agency/supplier relationships.

• Contribute to investor, partner, and executive communications as needed.

About You

• Proven experience in a marketing leadership role within defence, dual-use, or defence-tech organisations.
  

• Good understanding of the defence landscape and key stakeholder personas (MoD, Primes, NATO, etc.).
  

• Strong track record of building and managing marketing teams with a focus on coaching, performance, and culture.
  

• Demonstrated ability to build campaigns that directly contribute to pipeline and revenue growth.
  

• Full-stack marketing capability: from strategic planning to hands-on execution across digital, content, events, and communications.
  

• Entrepreneurial mindset and strong ownership — comfortable operating with pace, ambiguity, and autonomy in a scale-up environment.
  

• Excellent written, visual, and verbal communication skills.
  

• Experience working closely with commercial teams to support go-to-market execution.

• Familiarity with modern marketing tools (e.g., HubSpot, LinkedIn Ads, Webflow, Google Analytics).

Why Join Hadean

• Play a key role in shaping the marketing engine of one of the UK’s most exciting defence-tech companies.
  

• Work with cutting-edge technologies at the intersection of distributed computing, simulation, and national security.
  

• Join a mission-driven team that values trust, ownership, and innovation.
  

• Competitive salary and equity package, flexible working, and the opportunity to make a real impact.

Job Benefits

We make Hadean an awesome place to work with competitive benefits…

• Private Health Insurance

• Enhanced pension scheme

• Enhanced parental leave

• 3 extra days off at Christmas (on top of our standard 25)

• L&D budget

• Regularly scheduled socials

• Share options

Department

Marketing

Locations

London

Remote status

Hybrid

Marketing · London · Hybrid

Head of Marketing

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