Marketing Executive in London

H3O is building its marketing function for the first time, and this is a pivotal hire as the company enters its next chapter, a brand, website and Linked In relaunch, a pivot toward a managed-services-led, recurring-revenue model, the introduction of an AI and Microsoft Copilot proposition, and the productisation of our proprietary IP.

As a Marketing Executive you will own hands-on execution across the full marketing mix, including campaigns, content, website, social, email, events and reporting, working closely with the CCO and COO who set the strategic direction.

You will demonstrably increase brand awareness and equity, grow market penetration, and generate high-quality marketing-qualified leads that fuel the sales pipeline and ultimately increase revenue.

It is an ideal role for a capable, ambitious marketer who wants to grow with the business toward a Marketing Manager or Head of Marketing position.

• What you’ll do
• Work closely with the CCO and COO, and the Board, to shape and deliver the marketing strategy and plan, tracking performance against goals and providing analysis, insight and reporting.
• Deliver the brand, website and Linked In relaunch (“The Next Chapter”) refresh positioning and messaging, modernise the website, improve lead capture and conversion, and help establish clear, consistent brand guidelines across the organisation.
• Build and run the demand and lead-generation engine, create, execute, analyse and report on integrated campaigns across content, video, social, email, SEO, PPC, webinars and events, meeting and exceeding lead-generation targets to drive a strong sales pipeline.
• Develop H3O’s content and thought-leadership programme from a standing start, including a blog and insights hub, whitepapers, case studies and customer stories that build authority and drive organic search traffic.
• Create and own H3O’s AI and Microsoft Copilot marketing narrative, positioning the company credibly on responsible AI adoption for enterprises.
• Help productise and market H3O’s proprietary IP, such as the Migration Readiness Scheduler, Application Compatibility Tracker, OT PAWS and Testing-as-a-Service, giving each a clear identity, landing page and engagement model.
• Manage and optimise the website, SEO and PPC activity and associated budgets, and build and maintain a database of target organisations in the marketing-automation platform, reconciled with the CRM.
• Plan and execute events, conferences and webinars aimed at CIO and IT-leadership audiences, including logistics, materials and follow-up, with Linked In and Sales Navigator as a core B2B channel.
• Manage marketing spend responsibly, tracking the budget, producing forecasts for the CCO, COO and CFO, and demonstrating ROI as the budget scales toward around 3% of revenue.
• Provide creative direction and produce sales and marketing collateral, including pitch decks, brochures, infographics and whitepapers, conceptualising, copywriting and art-working high-quality outputs.
• Manage third-party agencies, freelancers and suppliers, accountable for effective outcomes delivered on time and to budget.
• Provide ongoing competitive intelligence, market positioning and analysis to support the leadership team, helping H3O target new sectors and verticals such as public sector frameworks.
• Support talent acquisition through employer-brand and recruitment-marketing content, and support the wider business as required.

Skills & experience

• 2 to 4 years’ marketing experience in a B2B start-up, scale-up or fast-growth technology company.
• Proven, ROI-focused lead-generation and conversion experience across integrated marketing.
• Hands-on experience of marketing-automation and CRM platforms (Hub Spot, Microsoft Dynamics or similar), including database build and pipeline reporting.
• Strong content marketing, thought leadership, copywriting, editing and proof-reading skills, with high attention to detail.
• Digital marketing capability across website (Word Press), SEO, PPC, email and social media, with Linked In-led B2B activity.
• Hands-on design capability with the Adobe Creative Suite (In Design, Photoshop, Illustrator), able to turn complex data and concepts into strong visual narratives.
• Commercial acumen and budget-management experience, with the discipline to track spend and evidence ROI.
• Experience of Account-Based Marketing (ABM), events, webinars and field marketing.
• Effective agency, supplier and freelancer management, with accountability for outcomes on time and to budget.
• A good understanding of Microsoft technology services, managed IT services and the B2B technology sector, or genuine interest and the appetite to learn it quickly.
• Self-motivated and self-managed, comfortable in a hybrid, remote-first environment and confident keeping stakeholders informed.

Qualifications

• Essential: A Level or equivalent (Grade C or above).
• Desirable: educated to degree level in a relevant subject, and/or a CIM Diploma in Professional Marketing or a similar professional qualification.

Who you are

You are a proactive self-starter who is creative, commercially minded and driven.

You are an excellent communicator and relationship-builder who influences stakeholders at all levels, internally and externally.

You bring strong planning and organisation, a keen eye for detail, and the resilience to deliver quality under pressure.

You are comfortable working in a hybrid, remote-first environment, thinking independently, seeking feedback and keeping stakeholders informed.

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