Senior Sustainability Consultant in London

Most sustainability software companies offer a platform. Most consultancies offer advice. Flotilla does both. That combination is what makes this role genuinely different. We’re looking for a Senior Sustainability Consultant to join our consultancy team: someone who can own client relationships from day one, lead on carbon accounting and ESG advisory, and help shape how we deliver across a growing portfolio that includes some of the UK’s most active private equity investors.

THE ROLE

You’ll be a senior member of Flotilla’s consultancy team, reporting to our Director of Sustainability and working across a portfolio of clients that spans private equity-backed businesses, investment funds, and larger corporates. From day one, you’ll carry your own accounts - leading on carbon footprinting, regulatory reporting, and sustainability strategy - while also actively contributing to winning new business. Success in the first 12 months looks like: a client portfolio you own and are proud of, new accounts you’ve helped bring in, and a clear personal development and progression plan.

WHAT YOU’LL BE DOING

• Own and manage a portfolio of client accounts, acting as the primary relationship holder across carbon reporting, net zero strategy, and broader ESG advisory.
• Drive business development: identifying prospects, contributing to pitches and proposals, attending events, and converting opportunities, with uncapped commission on what you win.
• Lead the delivery of GHG emissions assessments (Scopes 1, 2 and 3), SECR submissions, workshops, and CSRD/ISSB-aligned disclosures for clients across sectors.
• Advise private equity clients and their portfolio companies on ESG data collection, performance monitoring, and investor-ready reporting.
• Work closely with Flotilla’s technology team to configure and improve our ESG platform for client use. You’ll be as comfortable in a platform workflow as you are in a client meeting.
• Identify and pursue expansion opportunities within your existing client base, deepening relationships and broadening the scope of Flotilla’s work.
• Mentor junior consultants and carbon accountants and, if you have the appetite and experience, take on direct line management responsibility from the outset.

WHAT WE’RE LOOKING FOR

Essential

• At least 4 years of sustainability or ESG consultancy experience, with strong technical grounding in corporate carbon accounting and GHG reporting.
• Demonstrable experience working with or within private markets, particularly private equity firms or their portfolio companies.
• Comfortable owning client relationships independently: running meetings, facilitating workshops, managing expectations, and delivering to tight deadlines.
• A genuine commercial instinct. Someone who enjoys finding and winning new business, not just delivering it.
• Working knowledge of UK regulatory frameworks (SECR, ESOS, TCFD) and an appetite to develop broader ESG advisory capability.
• Strong working knowledge of Microsoft Excel for data analysis and carbon modelling, and PowerPoint for client-facing reporting and presentations.

Nice to have

• Experience advising on CSRD, SFDR or ISSB-aligned reporting.
• Familiarity with ESG data management platforms or carbon accounting software.
• Experience line managing or mentoring junior consultants.
• Exposure to SBTi target-setting or science-based net zero pathway work.
• Practical experience using AI tools to streamline sustainability workflows.
• Hands-on experience running supply chain engagement programmes.

WHAT YOU’LL GET

• Base salary: circa £50,000, depending on experience.
• Uncapped commission on new business you originate. Typically 3–6% of first-year contract value, with no ceiling on volume.
• Hybrid working: 3 days in office, 2 days from home, based from London (Bank), Manchester or Harrogate.
• 25 days holiday plus bank holidays and an additional day for your birthday.
• A genuine progression route. The chance to work at a company where your technical expertise shapes the product, not just the deliverables.

ABOUT FLOTILLA

Flotilla is a B Corp-certified sustainability consultancy and SaaS business. We help businesses measure, manage and reduce their carbon emissions. We combine proprietary software with expert advisory so our clients get both the platform and the people to make real progress. Joining now means joining at an exciting point in our growth: we’re expanding rapidly, with a growing and ambitious client base, a product that’s constantly improving, and a team that works hard, supports each other, and takes pride in doing meaningful work, whilst having some fun along the way.

HOW TO APPLY

Apply directly via LinkedIn with your CV. If you’re close to the brief but not a perfect match on paper we’d still encourage you to apply and tell us what you bring instead. We welcome applications from candidates of all backgrounds. If you need any adjustments to the application process, please let us know.