Growth Marketing Lead

Climate change is the defining business challenge of our time, and we're here to solve it. Most decarbonisation solutions count emissions but do nothing to reduce them. We've changed that. We’re Neutreeno, an emissions-to-performance platform, born out of the University of Cambridge's Department of Engineering. We help companies with supply chains and production processes turn emissions data into operational insight, the kind that cuts costs, sharpens decisions, and unlocks genuine competitive advantage.

For operations and finance, it's margin they can measure. For sustainability teams, it's progress they can prove. Same data, two audiences, one engine. We’re a fast-moving team that values EQ just as much as IQ. Autonomy, high‑ownership, speed and no‑ego collaboration are at our core. We seek people who care deeply and are eager to work on solving problems bigger than themselves.

The Role

At Neutreeno, marketing is the engine, and as our Growth Marketing Lead, you'll own the metrics, build the pipeline, and be accountable for connecting marketing to measurable business outcomes. You’ll lead marketing at Neutreeno and be fully accountable for pipeline. There's no marketing team under you, no agency on retainer, and no system to inherit. Your first 90 days are about shipping: measurement infrastructure, the content engine including CRM, and the first paid campaigns. The leadership team, working with our brand strategy partner, has defined a clear brand strategy and mapped the needs of the business. Your job is to build on this foundation and turn it into pipeline for our sales team.

This position operates on a hybrid work model with 3 days per week in our Cambridge office. Exceptional London‑based candidates will be considered with a 2‑day per week office requirement. Fully remote arrangements will be considered for outstanding international candidates, provided there is sufficient overlap with UK working hours.

The Work You’ll Do

• Ship a working attribution model and measurement dashboard in your first 30 days, so every conversation about marketing is grounded in data, not opinion.
• Own the weekly marketing performance and optimisation reports.
• Run 2 paid campaigns per quarter, end to end — strategy, creative brief, activation, optimisation, and post‑mortem.
• Publish 2–3 pieces of long‑form content per month that translate Neutreeno's science into the commercial language our buyers use.
• Build the case studies and customer stories that close deals — 3 finalised per quarter, more in active production.
• Own lifecycle marketing end‑to‑end — CRM, email, welcome sequences, nurture flows.
• Build the sales enablement kit — pitch deck, one‑pagers, case studies.
• Shape, evolve, and articulate Neutreeno's vision, voice, and positioning across all channels, in partnership with the leadership team and our brand partners.

Requirements

The Minimum Qualifications You’ll Need

• You've been the first or second marketing hire at a startup before, not a contributor on a team.
• You know what it feels like to own a number with no one to upscale to.
• 6+ years across the full marketing lifecycle at fast‑growing tech companies (B2B SaaS preferred), at least 2 of them in a startup environment where you were expected to build, not maintain, with a proven track record of connecting marketing efforts to MQL generation and revenue.
• You default to shipping over planning. Given a vague brief, your instinct is to produce a v1 quickly and iterate — not to schedule three alignment meetings.
• You can write. Genuinely. For a challenger brand where copy is doing strategic work.
• You use AI tools daily to compress production timelines, drafting, research, analysis, creative iteration — without letting output quality slip.
• You can translate complex technical ideas into narratives that land with both technical and non‑technical audiences.
• You're comfortable building in public with a founder who will be visible, and you'll be a thought partner, not a handler.
• Entrepreneurial grit: comfortable with ambiguity, shifting priorities, and building from the ground up with minimal oversight.

Preferred Qualifications

• Experience in the sustainability or climate sector strongly preferred.
• Experience marketing technical products to non‑technical buyers (operations, finance, procurement).
• Strong working knowledge of SEO best practices.
• Proficiency in design tools such as Figma.

What We Offer

• £55,000 - £70,000 base pay dependent on your skills, qualifications and experience.
• Competitive stock option plan so you can become a co‑owner in the business.
• Company pension with NEST.
• Leading private health insurance with WPA (the only Which? Recommended Provider for Private Medical Insurance).
• Cycle to work scheme.
• A hybrid work model that fosters both teamwork and individual flexibility.
• Remote working allowance (2 weeks per year).
• Work from Neutreeno HQ at the Cambridge Institute for Sustainability Leadership, recognised by the FT as one of Europe's leading startup hubs.
• Great on‑site amenities (unlimited free coffee, regular events with global sustainability leaders…)