--- title: 'Senior MLOps Engineer at Trainline' canonical: 'https://feeny.ai/job/senior-mlops-engineer-trainline-london-p0e46v40gygm' type: 'job' last_seen: '2026-10-25' --- # Senior MLOps Engineer at Trainline - **Company:** Trainline - **Location:** London, United Kingdom - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-10-23 - **Last confirmed live:** 2026-10-25 - **Apply:** https://jobs.ashbyhq.com/trainline/887ed309-575c-4dc1-ad7c-a4453aeadd51 ## Job description ## About us At Trainline, our purpose is to [empower greener travel choices, connecting people and places.](https://www.thetrainline.com/terms/sustainability-faqs) 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 🚄 We’re Europe’s leading independent rail platform, helping millions of travellers find and book the best-value rail and coach journeys across our app, website and partner channels. Our job is to make the green travel choice the best choice. By building a better train travel experience, we help more people choose rail - creating a positive impact for customers, our business and the planet. We’re a team of more than 1,000 Trainliners from over 50 nationalities, working across London, Paris, Barcelona, Milan, Edinburgh and Madrid. Now is a brilliant time to join us and help shape the future of travel. Introducing the Trainline MLOps Team 👋 Our MLOps team helps machine learning (ML) and AI teams across Trainline build, launch and run their products reliably. As a Senior MLOps Engineer, you will help shape how we operate AI and ML systems, including the infrastructure and tooling behind our internal ML/AI platforms and our customer-facing products. You will work on systems that are already being built and used across Trainline, so your impact will be real and visible. No two weeks look the same: one day you might be building out our ML platform, the next helping shape the architecture of our multi-agent AI products, and the next improving the developer experience with new tooling and standards. This is a hands-on role with technical leadership at its core. You will join an established team, working alongside our MLOps Engineering Manager and a small group of engineers, as we support a growing number of ML and AI teams. There is genuine scope to influence our technical direction, develop our engineering practices and mentor junior colleagues. In this role as the Senior MLOps Engineer, you will... 🚅 - Take a leading technical role in helping teams across Trainline adopt and operate ML and AI tooling as the technology evolves - Support AI infrastructure, working with the teams building our internal platform and customer-facing products, making sure products are well governed, monitored and deployed through automation - Build and drive adoption of one standard way to deploy ML and AI products, so that new products onboard quickly and reach production faster - Automate the modernisation of our services across products, including fixing and preventing security vulnerabilities in libraries and dependencies - Strengthen our MLOps foundations by improving cost tracking, finding ways to reduce costs, addressing security vulnerabilities and standardising engineering practices - Contribute to technical strategy, evaluating options and making well-reasoned decisions where there is no established approach - Communicate technical decisions clearly and help prioritise requests from the ML teams we support - Mentor fellow engineers and share knowledge through documentation and enablement across the organisation We’d love to hear from you if you have...🔍 - Hands-on experience with IaC and CI/CD tooling, ideally Terraform and GitHub Actions, though alternatives such as AWS CloudFormation and Jenkins are also relevant - Experience with containerised workloads using Docker and cloud platforms, ideally AWS, though GCP and Azure will be considered - Experience productionising AI products, including agentic systems and the AIOps tooling behind them, ideally using AWS Bedrock AgentCore or similar - Experience with managed or self-hosted ML infrastructure, such as Amazon SageMaker, feature stores (e.g. Feast) and DAG tooling (e.g. Airflow, Metaflow, or similar) - Experience with model experiment tracking, ideally MLflow or Weights & Biases, and with monitoring tools such as EvidentlyAI, CometML, Grafana or New Relic - Experience writing production-quality, tested Python code - Experience leading or contributing significantly to major platform changes and migrations, and the ability to lead technical work through ambiguity - Clear communication, sound prioritisation, and a track record of getting other teams to adopt shared standards and of mentoring colleagues ## Nice to have's... 🔑 - Knowledge of cloud topics such as networking fundamentals (VPC, security groups, CDN, WAF, etc.) and identity and access management (IAM, EntraID, SSO, etc.) - Experience with any of our wider tech stack and partners, including Spacelift, Braintrust and ElevenLabs. More information: Enjoy fantastic perks like private healthcare & dental insurance, a generous work from abroad policy, 2-for-1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family-friendly benefits. We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one! We're operating a hybrid model and ask that Trainliners work from the office a minimum of 60% of their time over a 12-week period. We also have a 28-day Work from Abroad policy. Our values represent the things that matter most to us and what we live and breathe everyday, in everything we do: - 💭 Think Big - We're building the future of rail - ✔️ Own It - We focus on every customer, partner and journey - 🤝  Travel Together - We're one team - ♻️ Do Good - We make a positive impact We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated. Interested in finding out more about what it's like to work at Trainline? Why not check us out on [LinkedIn](https://www.linkedin.com/company/trainline/), [Instagram](https://www.instagram.com/lifeattrainline/) and [Glassdoor](https://www.glassdoor.co.uk/Overview/Working-at-Trainline-EI_IE249203.11,20.htm)! ## About Trainline ## Company Overview - **One-liner**: Trainline is Europe’s leading independent rail platform, enabling travelers to search, book, and manage rail and coach tickets across 40+ countries via its website and mobile app. - **Entity Type**: Public (London Stock Exchange: TRN; FTSE 250 & FTSE4Good Index constituent) - **Headquarters**: London, United Kingdom (with offices in Edinburgh, Barcelona, Milan, and Paris) - **Founded**: 1999 (by Virgin Group, originally a phone-based ticketing service) - **Founders**: The company was founded by the Virgin Group; current leadership includes CEO Jody Ford (joined 2024) ## Core Business - **Primary industry/industries**: Online travel & ticketing; rail technology; mobility services - **Target customers**: B2C (individual travelers) and B2B (rail and coach operators via Trainline Solutions) - **Mission or purpose statement**: “We’re building the world’s number one rail platform, giving people a simpler, greener travel experience.” The company is anchored in environmental sustainability — empowering people to make greener travel choices. ## Products & Services - **[Trainline Consumer App/Website]**: A multi-channel platform (iOS, Android, web) allowing users to search, compare, book, and manage rail and coach tickets across 270+ carriers in 40+ countries. Features include live journey planners, eTickets, PriceBot (lowest fare alerts), and carbon footprint tracking. Over 125 million visits per month and 350+ searches per second. - **[Trainline Solutions]**: A B2B segment offering white-label ticketing, data, and technology services to rail and coach operators, including APIs, retailing tools, and customer analytics. - **[Platform One]**: The proprietary technology infrastructure powering all Trainline services across markets. - **[‘I Came By Train’ Initiative]**: A sustainability campaign promoting rail over air/car travel, with customer tools like ‘My Sustainability Story’ and ‘Super Routes’ for CO2 tracking. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed (public company; market cap fluctuates). Annual Report data available via LSE filings. - **Key Metric**: Annual Net Ticket Sales exceeded £5 billion (as of latest reports); International segment reached £1 billion in ticket sales. - **Notable Investors/Partners**: Initially backed by Virgin Group; now publicly listed on the London Stock Exchange. No single controlling investor disclosed. Key rail partners include 270+ operators globally (e.g., SNCF, Renfe, Trenitalia, UK train operators). - **Growth Signals**: Europe’s most downloaded rail travel app; 93% of UK consumer transactions via mobile; 70% of International consumer transactions via app; growing headcount (c.990 people from ~60 nationalities); joined FTSE 250 shortly after IPO; net-zero targets approved by Science Based Targets Initiative (SBTi). ## Competitive Advantages - **Scale & Data Moat**: Over 125 million monthly visits and 350 searches/second provide massive user behavior data for route optimization, pricing algorithms, and demand forecasting. - **Multi-Country Regulatory & Integration Expertise**: Deep integration with 270+ rail/coach operators across highly fragmented European rail markets — a strong barrier to entry. - **Sustainability as Brand Differentiator**: First tech company with SBTi-approved net-zero targets; carbon comparison tools embedded in UX (“87% less CO2 than air travel”). This aligns with growing consumer and regulatory push for greener transport. - **Cross-Channel Dominance**: High mobile adoption (93% UK/70% International app transactions) combined with strong web presence. - **Recurring Model via B2B Solutions**: Trainline Solutions provides stickiness with operators beyond the consumer marketplace. ## Strategic Focus - **International Expansion**: Growing non-UK markets (e.g., Spain, Italy, France) — international segment hit £1bn ticket sales. - **Modal Shift Marketing**: Driving rail vs. air/car through initiatives like ‘I Came By Train’ and sustainability features. - **Technology & Personalization**: Investing in AI/ML for dynamic pricing, journey optimization, and personalized recommendations via Platform One. - **Sustainability Leadership**: Continued investment in carbon tracking features and SBTi-aligned net-zero roadmap. - **B2B Growth**: Scaling Trainline Solutions to onboard more operators and geographies. ## Why Work Here - **Culture & Values**: Four core values — “Think Big,” “Own It,” “Travel Together,” “Do Good” — shape culture. Emphasis on innovation, accountability, inclusion, and positive environmental impact. - **Flexible/Hybrid Work**: Hybrid policy requiring 60% minimum in-office over 12-week period; plus a 28-day “Work from Abroad” policy per year. - **Benefits**: 25 days annual leave + 2 extra days over festive period + option to buy 3 extra days; Bupa health & dental cover; gym discount; Employee Assistance Programme; income protection; global share incentive plan; Perkbox discounts; enhanced parental leave; fertility and parental bereavement coaching. - **Diversity & Inclusion**: 55+ nationalities, c.990 employees. Active employee-led networks: Women in Leadership, Gender Equality Network, Ethnic Diversity Network, Rainbow Train (LGBTQIA+), Sunflower (accessibility), Parents & Carers. - **Career Development**: Personal learning budget; digital learning platform (Learning Express); workshops and development programmes; internal mobility encouraged; transparent pay bands; promotion windows twice a year (~10% of employees promoted annually). - **Office Locations**: Modern offices in London (HQ), Edinburgh, Barcelona (tech hub with sunny terrace), Milan, Paris. Perks include free breakfast, pool tables, event spaces, stocked drinks fridges, and outdoor BBQs in some locations. - **Impact**: Opportunity to work on a platform with 125M+ monthly visits, driving modal shift and reducing carbon emissions. ## Sources 1. [trainlinegroup.com/careers/en/who-we-are/](https://www.trainlinegroup.com/careers/en/who-we-are/) 2. [trainlinegroup.com/careers/en/](https://www.trainlinegroup.com/careers/en/) 3. [trainlinegroup.com](https://www.trainlinegroup.com/) 4. [trainlinegroup.com/careers/en/life-at-trainline/](https://www.trainlinegroup.com/careers/en/life-at-trainline/) 5. [trainlinegroup.com/careers/en/how-we-hire/](https://www.trainlinegroup.com/careers/en/how-we-hire/) ## Other roles at Trainline - [Data Scientist](https://feeny.ai/job/data-scientist-trainline-london-0g6604badwbn) — London, United Kingdom - [Brand Manager - 9 Month FTC](https://feeny.ai/job/brand-manager-9-month-ftc-trainline-london-xzemtq9cmbx2) — London, United Kingdom - [Senior Backend Engineer - .Net](https://feeny.ai/job/senior-backend-engineer-net-trainline-london-zm8tjzgb5m52) — London, United Kingdom - [Brand Paid Media Manager - 9 Month FTC](https://feeny.ai/job/brand-paid-media-manager-9-month-ftc-trainline-london-1mf7znjes8bd) — London, United Kingdom - [Platform Engineer](https://feeny.ai/job/platform-engineer-trainline-london-sw955n28k9jc) — London, United Kingdom - [Senior Platform Engineer](https://feeny.ai/job/senior-platform-engineer-trainline-london-1x390fxkm7e0) — London, United Kingdom - [iOS Engineer](https://feeny.ai/job/ios-engineer-trainline-london-q6t7b0bnx4dj) — London, United Kingdom - [Product Manager](https://feeny.ai/job/product-manager-trainline-london-xbrmkpryvgwy) — London, United Kingdom - [VAT Manager](https://feeny.ai/job/vat-manager-trainline-london-2m96h9tmhc53) — London, United Kingdom - [Machine Learning Engineering Manager](https://feeny.ai/job/machine-learning-engineering-manager-trainline-london-a6af185x9ssm) — London, United Kingdom