Senior Commercial Finance Manager - Marketing

About Us

We are champions of rail, inspired to build a greener, more sustainable future of travel. Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels.

Now Europe’s number 1 downloaded rail app, with over 125 million monthly visits and £5.9 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco‑friendly and affordable as it should be.

Today, we’re a FTSE 250 company driven by our incredible team of over 1,000 Train liners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high‑speed journey.

Location: London (Hybrid)

Salary: £70‑80k

The Commercial Finance team are central to supporting the business through this continued expansion. We are laser focused on embedding smarter, more sophisticated, data‑driven decisions across Europe. Our comparative advantage is that we learn faster than the competition
, and the Commercial Finance team is key to driving this discovery cycle. We dig deeper, we think insight not numbers, we articulate complexity clearly and with confidence.

As Senior Commercial Finance Manager – Marketing, you’ll provide high quality, actionable insight to support our International Consumer business. You’ll develop strong relationships with business stakeholders at all levels whilst deep‑diving into performance drawing on your network within other departments such as Commercial, Data Science and Supply. The department is ever evolving, and you will play an important role in enabling a culture of continuous improvement, working closely with the Data team to devise innovative ways to access insight
.

• Act as lead finance partner for our Growth, Engagement & Brand Marketing teams, shaping strategy with clear commercial insight and challenging thinking to drive performance.
• Own and evolve weekly marketing trading reporting, delivering fast, accurate insights that influence decision-making and maximise return on marketing & promo spend.
• Steer capital allocation decisions across brand, performance and promotional channels and markets, optimising how and where we invest, to achieve business goals.
• Enhance ROI modelling, measurement and tracking, working with Data Science and Brand Insights to understand incrementality of spend, and accurately forecast and measure returns.
• Lead innovative optimisation projects with Growth and Data Science, leveraging modelling, experimentation, customer segmentation and funnel analytics to unlock growth.
• Create high‑impact narratives and presentations, distilling complex performance drivers into compelling stories on customer value, payback and long‑term impact.
• Shape multi‑year marketing financial plans, aligning resources to strategy and challenging teams to think bigger and bolder.
• Champion the evolution of Commercial Finance, embracing new technologies (including AI), improving ways of working and sharing best practice.

We’re looking for creative big thinkers with small egos to achieve our ambitious plans. You’ll bring experience in a commercial, financial or analytical role, and demonstrate a proactive, can‑do attitude. We’d prefer you to have worked within a digital, e‑commerce, technology or retail environment but we can flex on this given your ability to work with pace and energy within a growth environment.

You will be familiar with the measurement and modelling of marketing ROI using various measurement techniques, and calculation of customer economics metrics (paybacks, LTV : CAC ratios). A team player with a “roll your sleeves up” attitude, you’ll be used to using your commercial awareness to think laterally and solve problems, and will have a passion for making meaning out of data.

Similarly, it’s vital that you bring an innate ability to distil and communicate results of complex analysis clearly and…