FP&A and Commercial Finance Manager in London

Working with the VP Finance, you will be the go‑to commercial finance partner for the Founder‑CEO, COO and leadership team, building the FP&A function from scratch and owning everything from the financial model to analysing business line performance to transaction support. This role sits at the intersection of finance, strategy and commercial operations – it is not a back‑office role. If you want to understand every part of the business, influence decisions at the highest level, and help build a finance function that is ready for a transaction, this is the job.

Your mission will be to:

• FP&A & Financial Planning
  • Build and maintain the company’s financial model, revenue, cost, headcount and cash, with scenario and sensitivity analysis.
  • Own the annual budget and rolling forecast process, working with all business functions to set and track targets.
  • Produce monthly budget vs actuals variance analysis with clear commentary and insight for the leadership team and board.
  • Develop business line P&Ls to give the business visibility into how each product and segment is performing.
  • Build and own the investor‑ready financial narrative and supporting materials for fundraising and M&A processes.
• Commercial Finance & Business Partnering
  • Act as the primary commercial finance partner to the VP Finance and leadership team – turning around ad hoc analysis, modelling and commercial sense‑checks quickly and independently.
  • Support pricing decisions, unit economics analysis, COGS deep‑dives and margin improvement initiatives.
  • Partner with the GTM team on pipeline‑to‑revenue reporting, cohort analysis and commercial deal structuring.
  • Evaluate new commercial opportunities, partnerships and market expansion scenarios with financial rigour.
• Reporting & Insights
  • Produce high‑quality board and investor reporting packs that are clear, well‑structured and insight‑driven.
  • Develop dashboards and automated reporting to give the business real‑time visibility into financial performance.
  • Own the weekly financial reporting cadence for internal leadership.

Skills & Qualifications

• ACA, ACCA or CIMA qualified (or equivalent).
• 5+ years in FP&A, commercial finance, strategic finance or top‑tier strategy consulting, ideally with a mix of scale‑up and established business experience.
• Proven track record of building financial models from scratch, comfortable with multi‑entity, multi‑currency models.
• Experience in a commercially facing role – you have worked directly with C‑level operators, founders or senior leadership and are used to being the go‑to person for financial answers.
• Experience supporting a fundraise, M&A process or investor reporting is a strong advantage.
• Background in SaaS, marketplace, fintech or tech‑enabled services preferred; you understand recurring revenue models, unit economics and B2B commercial dynamics.
• Exceptional financial modelling – you build clean, dynamic, assumption‑driven models that others can use and trust.
• Strong commercial instinct – you don’t just describe numbers, you interpret them and come up with a view.
• Excellent communication – you can present complex financial analysis clearly to a non‑finance audience.
• High attention to detail with a bar‑raiser mentality; your outputs are always polished, structured and go beyond the literal ask.
• Comfortable with ambiguity and able to operate independently in a lean team without heavy process or oversight.
• Proficient in Excel or Google Sheets; experience with Xero, HubSpot, Fathom or similar tools is a plus.

Mindset

• Think like a business partner, not a reporter; your instinct is to add insight, not just present data.
• Proactive and solution‑oriented, you surface problems with a recommended path forward, not just a description of the issue.
• Comfortable in a fast‑moving environment where priorities shift and the answers aren’t always obvious.
• You care about quality; everything you send is sense‑checked, well‑presented and reflects well on you and the team.
• Excited by the mission – Goodstack is building infrastructure for global charitable giving and you want to be part of that.

What you can expect upon joining our team

• Salary reviews and share options becoming an integral part of our growth and share in the company’s success.
• Goodstack’s Workplace Giving.
• Vitality Plus – private health insurance.
• £250 brighten‑your‑day annual budget.
• £1 000 learning & development annual budget.
• Goodstack library.
• Tasty Tuesday – office lunch is on the company.
• Slow‑run club Wednesday.
• Paid days off to volunteer for non‑profit causes.
• Paid days to attend conferences.
• Paid day off on your birthday.
• 25 days annual leave plus paid public holidays.
• Paid sick leave.
• Paid wellness leave.
• Parental leave.
• Workplace nursery scheme.
• Pension with tax‑efficient salary sacrifice option.
• UK cycle‑to‑work scheme.
• Ecologi carbon offsetting.
• Flexible working hours.
• WFH budget upon joining.
• Office available on a flexible basis – a warm, friendly space in the heart of London.
• And so much more.

About us

Since 2017, Goodstack has been at the forefront of creating a future where good will be built into everything we do. From daily commutes to weekend activities or grocery shopping, we envision a world where creating positive change is seamlessly integrated into everyday lives. In this future, the depth and breadth of impact we can make through everyday actions will expand dramatically – benefiting both businesses and the world. Businesses are expected to deliver on both profit and purpose, and those that don’t are falling behind. We make it easy for any company, anywhere in the world, to integrate good into what they do. Doing this empowers companies, employees, consumers and communities to contribute to positive change and take meaningful action.

Our pledge to diversity, equity & inclusion

We take pride in our diverse and growing team representing 20+ nationalities across 5 continents. Our continued expansion provides us with opportunities to embrace and celebrate different backgrounds, perspectives and experiences – essential to our success. We actively seek and welcome applicants from all walks of life, regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status or disability status.