Job Title:
Head of Marketing (Founding Marketer)
Company:
AI Security Startup
Location:
London - Hybrid
Comp Range:
BoE + Equity
Summary:
My client is an elite team of cybersecurity veterans, AI researchers, and engineers building the next-generation defence layer for the AI era. They have a track record and are backed by top-tier VCs, their proprietary platform secures AI layers against adversarial attacks, prompt injections, and data exfiltration. They've engineered a highly technical, high-signal platform that solves a critical vulnerability for the enterprise.
Now, they need their first dedicated marketing leader to build the machine that takes it to market.
The Role:
As Head of Marketing (Founding Marketer), you will be the architectural force behind category creation, brand identity, and pipeline generation. You aren't just managing a budget or directing agencies; you are getting your hands dirty crafting narrative, engaging technical buyers, and converting early-stage momentum into a repeatable growth engine. You will report directly to the CEO, working as a strategic partner to shape how the world perceives the future of AI security.
Responsibilities
- Own the Category Narrative: Build a high-signal brand that establishes my client as the definitive, trusted voice in AI and autonomous security. Translate complex machine learning vulnerabilities into compelling stories for CISOs, developers, and security practitioners.
- Architect the Growth Stack: Design, execute, and scale their first demand generation channels from absolute zero. You will champion product-led and content-driven initiatives that engage technical audiences.
- Product & Content Marketing: Create high-value, highly technical collateral. Work with their engineering team to publish recurring model evaluations, threat research, and technical findings that capture the industry's attention.
- Event & Community Strategy: Own their presence at major cybersecurity conferences (e.g., Black Hat, DEF CON, RSAC) and design intimate, high-impact experiences like developer meetups, executive dinners, and technical webinars.
- Ecosystem Partnerships: Develop strategic marketing partnerships across the AI toolchain, developer platforms, and cybersecurity networks, turning technical integrations into massive market announcements.
- Build the Team: As the company scales, you will source, hire, and lead a world-class, lean marketing function spanning growth, product marketing, and developer relations.
You Are:
- The 0-to-1 Operator: You have 3+ years of experience as a founding marketer or early marketing hire at a fast-growing B2B SaaS startup, ideally in cybersecurity, developer tools, or AI infrastructure. You thrive in ambiguity and love building pipelines from scratch.
- Fluent in Tech & Security: You understand the friction points of enterprise security buyers. You aren't afraid of words like "prompt injection," "vector databases," "RAG," or "OWASP Top 10."
- A Full-Stack Creator: You can write a technical blog post, orchestrate a product launch, spin up a high-converting landing page, and track your CAC/LTV metrics with precision.
- Ruthlessly Priority-Driven: In a sub-one-year-old startup, everything feels urgent. You have a proven track record of ruthlessly prioritizing the 20% of work that drives 80% of the market impact.
Offer:
- Ground-floor equity in a rapidly growing startup tackling one of the defining problems of the decade.
- High autonomy to build a major B2B category brand exactly the way you've always wanted to.
- Flexible working environment (Remote-first with core collaboration hours).
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Head of Marketing - 1st in London employer: LT Harper Group
As a Senior Security Engineer at our specialist Microsoft security partner, you'll thrive in a dynamic and supportive work culture that prioritises employee growth and development. With a hybrid working model that allows for flexibility and a focus on continuous training, you will have the opportunity to work across multiple enterprise environments while collaborating with a talented team in London. Join us to make a meaningful impact in the cybersecurity landscape while enjoying the unique advantages of a forward-thinking organisation.
