Senior Advertising Operations Manager

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.

Great journeys start with Trainline 🚄

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.

Trainline Advertising plays a central role in our monetisation strategy, connecting brands with rail and coach travellers at high‑intent moments across the customer journey - from planning through to travelling.

We’re looking for an experienced, detail‑oriented Senior Advertising Operations Manager to own and evolve Trainline’s advertising operations and programmatic ecosystem. This role is accountable for campaign delivery, ad tech performance, yield optimisation and the ongoing development of a scalable, privacy‑first advertising platform across direct and programmatic demand.

You’ll act as the operational backbone and subject‑matter expert for Trainline Advertising, working closely with Client Success, Product, Engineering and Data teams to ensure advertising is reliable, compliant, performant and resilient to changes in the wider ad tech ecosystem, while delivering a strong customer experience.

Advertising Operations & Delivery

• Own end‑to‑end ad operations across direct and programmatic campaigns, directly and through the team, including setup, trafficking, pacing, optimisation and post‑campaign reporting.

• Ensure consistently high‑quality ad delivery across formats, placements and platforms, meeting defined operational standards and SLAs.

• Act as the primary operational point of escalation for campaign issues, leading troubleshooting across delivery, tracking and performance.

Ad Tech Stack Ownership

• Own the day‑to‑day operation and optimisation of Trainline’s ad tech stack, including Google Ad Manager (GAM), SSPs, consent frameworks and QA processes.

• Set, maintain and evolve operational standards for ad delivery, measurement, quality and reliability across Trainline Advertising.

• Lead integrations with new ad tech partners, formats and demand sources in collaboration with Product and Engineering teams.

• Drive improvements in automation, tooling, documentation and processes to support scale and operational efficiency.

Programmatic Yield & Marketplace Optimisation

• Lead programmatic yield management, balancing short‑term revenue performance with long‑term marketplace health and customer experience.

• Monitor performance across demand sources and formats, identifying opportunities to improve fill, CPMs, demand quality and overall yield.

• Evaluate, test and onboard new programmatic partners, technologies and monetisation opportunities.

Cross‑Functional Leadership & Influence

• Work closely with Client Success to support campaign execution, forecasting, troubleshooting and client delivery.

• Act as the advertising operations subject‑matter expert and functional lead, influencing product and engineering roadmaps to ensure scalable, high‑quality monetisation is embedded early.

• Collaborate with Data and Strategy teams to improve reporting, measurement frameworks and actionable insight.

Team Leadership & Capability

• Line‑manage and develop an Ad Operations Manager, providing clear direction, coaching and performance feedback.

• Set operational priorities, ways of working and quality standards across the ad operations function.

• Build resilience and scalability by reducing single points of failure and improving documentation and process maturity.

• 6+ years’ experience in ad…