Senior Growth Marketing Manager

Who is Atominvest Atominvest is the operating system for modern private markets asset managers. Our modular, flexible SaaS technology underpins key investor- and portfolio-management workflows. Our customers are sophisticated private equity, growth equity, and private credit firms managing billions in assets globally. We aim to deliver ongoing high-quality outcomes for them through a long-term partnership mindset. At Atominvest, you’ll be working on something very exciting: the future of work, investments and sustainability/ ethical investing for the world’s best investors and delivering a positive impact through this. Based on the growth we are experiencing, we think we’re on to something big. It won’t be easy. Joining a scale up business is an amazing and rewarding challenge, pushing well beyond the boundaries of natural growth cycles. You’ll move quicker than feels comfortable and be brilliant at continually re-prioritizing what must get done to keep Atominvest growing year over year at the pace of the best SaaS companies on the planet. We’ve gone from zero to ten, now we’re looking to go from ten to one hundred! The Opportunity Were building out the marketing function from the ground up, and this is a rare chance to be the second marketing hire and help shape how the team operates. Youll work closely with the Head of Marketing, taking ownership of the day-to-day execution that drives growth - from events and digital marketing to content and website support - while the HoM focuses on strategy, product marketing, ABM, partnerships, and broader commercial initiatives. It’s a lean team and so this role suits someone who enjoys experimenting to drive growth and who wants ownership across the funnel rather than depth in a single specialism. This is not a coordinator role. Were looking for someone who can take a brief and run with it, manage competing priorities independently, and bring structure and ideas to our marketing operations without needing close oversight. Youll have real ownership over your areas and the autonomy to make decisions, with support and direction from the HoM. Key Responsibilities Events Management (~25–30%) * End-to-end planning and delivery of webinars, conferences, sponsorships, and in-person events, including logistics, vendor management, and on-site support where needed * Manage event budgets, timelines, and post-event reporting (leads, engagement, ROI) * Coordinate speaker and sales involvement, and ensure smooth follow-up into HubSpot and the sales pipeline Digital Marketing & HubSpot Admin (~25%) * Act as primary HubSpot administrator: manage workflows, lists, email campaigns, lead scoring, and data hygiene * Build and send marketing emails and nurture sequences * Support paid campaigns on LinkedIn and Google Ads (campaign set-up, monitoring, basic optimisation, reporting), working alongside agency partners managed by the HoM * Maintain dashboards and reporting on core digital marketing metrics Content & Social (~40-50%) * Partner with internal subject-matter experts to source insight and turn it into content (articles, LinkedIn posts, case studies, newsletters), using AI tools to accelerate production rather than writing everything from scratch * Own the organic social media calendar and posting, primarily LinkedIn * Repurpose long-form content (webinars, whitepapers, reports) into multi-channel assets * Maintain brand and tone consistency across all marketing output Website Updates * Make routine website updates (new pages, blog posts, landing pages, minor content/CMS changes) * Flag larger website or UX projects to the HoM and liaise with developers/agencies as needed What You Bring * 5–6 years B2B marketing experience, ideally in SaaS, fintech, or financial/professional services * Hands-on HubSpot experience, ideally including admin‑level configuration (workflows, lists, reporting) * A genuine generalist: comfortable moving between events, content, paid social support, and website tasks in the same week * Working knowledge of LinkedIn Ads and Google Ads (you dont need to be a paid media specialist, but you should be confident enough to manage day‑to‑day campaign tasks alongside an agency) * Strong project management instincts: you organise your own workload, set priorities, and proactively flag risks rather than waiting to be told whats next * Experience using AI tools (e.g. ChatGPT, Claude) * Excellent written English and an eye for clear, professional B2B content Mindset * A self‑starter: as the first marketing hire, youll need to build processes as you go, not rely on existing ones * Curious, experimental, and not afraid to challenge assumptions * Energised by building, iterating and improving rather than maintaining the status quo. Nice to Have * Experience marketing into financial services, asset management, or private capital markets * Familiarity with ABM concepts and working alongside a sales team * Basic design skills (Canva, Adobe Express) for quick‑turnaround social or event assets What Success Looks Like in the First 6 Months * HubSpot is well‑organised, with clean data, functioning workflows, and reliable reporting * A consistent content and social cadence is in place, fed by regular SME input and supported by AI‑assisted production. * At least one major event has been delivered end‑to‑end with minimal HoM involvement in logistics * The HoM can confidently delegate digital marketing execution and trust its being managed proactively Why Join Now This is a genuine opportunity to shape a marketing function from its earliest stages, with direct mentorship from an experienced Head of Marketing and a clear path to growing the team and your role as the function scales. What we offer * Competitive compensation (fixed base salary + performance incentives) * 25 days of holiday per year + bank holidays * Hybrid working style (a minimum of 3 days in our central London office is required) * Cycle2Work scheme * Employee Assistance Programme (EAP) to support employee wellness * A culture of trust, ownership, responsibility and autonomy in your work * An incredible team of smart and mission‑driven people to work with * Fun working atmosphere * Significant growth opportunities * Company‑wide socials and events J-18808-Ljbffr