Jobs at Trainline

Build scalable data pipelines, data models, feature stores, and cloud-native data applications supporting machine learning workloads. Partner with Machine Learning Engineers and Data Scientists to create reliable datasets, maintain production pipeline quality and observability, and support batch and real-time data systems. The role uses Python, SQL, Spark, Airflow, AWS, CI/CD, and modern data engineering technologies.

Lead production of the Group's IFRS annual and half-year financial statements, manage external audits, own cashflow forecasting and liquidity analysis, act as the primary technical accounting authority, implement new standards, oversee subsidiary statutory filings, drive controls and accounting policy, manage stakeholder and banking relationships, and lead cross-functional projects and a high-performing reporting team.

Lead Trainline’s corporate sustainability agenda, including delivery of its SBTi-validated emissions reduction strategy, supplier engagement, and Scope 3 reductions. Drive adoption of the Watershed GHG data platform, support sustainability-linked disclosures, improve ESG ratings, and develop measurement approaches for emerging topics such as AI emissions. Influence senior stakeholders and teams across the business while presenting sustainability progress internally and externally.

Manage end-to-end billing for non-rail revenue streams, including advertising and partnerships. Maintain billing registers, prepare accruals and management-account summaries, reconcile campaign delivery with invoices, review contracts, support debt recovery, and resolve billing discrepancies. Partner across Commercial, Billing, Credit, Accounts Receivable, and Finance Transformation to standardize workflows and implement automated billing solutions.

People Partner responsible for advising Customer Services and Operations, Fraud and Payments, and Corporate Affairs. The role manages employee relations cases, coaches managers, supports performance, absence, disciplinary, grievance, redundancy, and restructure processes, identifies people risks, and leads strategic people projects. Requires strong stakeholder management, commercial judgment, UK employment law knowledge, and experience working independently in a fast-paced environment.

Leads engineering across multiple full-stack web, backend, and mobile squads within Trainline’s Customer Growth pillar. Manages Engineering Managers, develops talent, oversees complex delivery, guides technical strategy and architecture, and connects railcard, subscription, retention, and customer value domains. Partners with Product, Design, Data, and Commercial teams to drive business outcomes. Champions engineering quality, innovation, monitoring, alerting, incident management, operational excellence, and a high-performing, inclusive culture.

Lead multiple engineering teams across Trainline’s white-label and Digital Pay as You Go products. Own OKR delivery, technical health, roadmaps, cross-team dependencies, and technical direction while partnering with Product, Data, and Commercial stakeholders. Coach engineers and managers, develop future leaders, promote scalable and resilient systems, and drive operational excellence through monitoring and incident management.

Design and deliver marketing measurement using Python, causal inference and geo-experiments. Combine multiple data sources, translate findings into commercial recommendations, manage simultaneous projects, and partner with marketing and analytics to improve measurement capability.

Lead multiple engineering teams to drive platform modernization and adopt AI workflows. Partner with stakeholders, balancing strategy and operational excellence.

As the Head of Machine Learning Engineering, you will define the ML strategy, lead teams, deliver scalable solutions, and shape AI governance for enhanced customer travel experiences.

As a .NET Engineer at Trainline, you will develop features, ensure code quality, mentor team members, and manage the development lifecycle.

Join Trainline as a mid-level Site Reliability Engineer to improve platform reliability and observability, participate in incident response and on-call rotation, build and maintain monitoring/alerting, support AWS-hosted infrastructure using IaC and CI/CD (Terraform, GitHub Actions), collaborate with product teams, and write scripts and tooling to improve reliability and scalability.

Build and improve Trainline's infrastructure platform using Terraform and AWS, automate tasks with Node.js/Python, apply secure-by-default principles, test and deploy via CI/CD, collaborate with platform and engineering stakeholders, and deliver reliable, maintainable infrastructure changes.

The Senior Backend Engineer will develop features, improve code quality, mentor others, and manage the development lifecycle while focusing on customer priorities and technical decisions.

Design, build and operate backend services in C#/.NET; own full development lifecycle, mentor teammates, improve reliability, observability, CI/CD, and scale microservices across AWS.

Design, implement and improve Trainline's infrastructure platform using Terraform and AWS. Build automation and tooling in Node.js or Python, enforce secure-by-default cloud patterns, test and deploy via CI/CD, mentor mid-level engineers, collaborate across teams, and manage multi-account, multi-region, and enterprise-scale platform concerns to deliver reliable, scalable infrastructure.

Provide first- and second-line IT support for Trainline employees: manage tickets and SLAs, troubleshoot Windows/macOS/mobile devices, run MDM and asset lifecycle, handle onboarding/offboarding, maintain AV/VC systems, follow security and compliance standards, contribute to documentation, automation and cross-region support.

Lead strategy and operations for Trainline's New Verticals (Hotels and Car Hire). Translate strategy into roadmaps, run end-to-end programmes, manage risks and dependencies, build governance and leadership reporting, and coordinate cross-functional stakeholders to deliver multi-party product launches and feature rollouts.

Senior technical lead for Workplace Technology providing Tier 2/3 support, mentoring engineers, owning complex incidents, managing MacOS/Windows device estates (JAMF, Intune/Autopilot), Azure AD/M365 administration, AV/VC systems, security/compliance contributions, documentation, process improvement and runbook automation. Responsible for incident lifecycle, root cause analysis, access governance, asset/on-offboarding, and driving team standards.

Senior finance leader owning Group IFRS external reporting, leading year‑end and half‑year audits, producing listed financial statements, and managing subsidiary statutory filings. Acts as technical accounting authority on complex IFRS issues, owns cashflow forecasting and liquidity analysis, drives controls and accounting policy, leads cross‑functional projects, and develops a high‑performing finance team.