Data Engineer

Join our dynamic team at Trainline as a Data Analyst! In this pivotal role, you will leverage data to drive insights that influence strategic decisions. Your analytical expertise will help optimize our operations and enhance customer experiences. Collaborate with cross-functional teams and utilize advanced data analysis techniques to uncover trends and present actionable recommendations.

Join our dynamic team at Trainline as a Data Scientist, where you will leverage data to drive insights and influence strategic decisions. You will work with cross-functional teams to develop models that enhance our customer experience and optimize our operations. If you have a passion for data and want to make a real impact in the travel industry, this is the opportunity for you!

Join Trainline as a Data Analyst in our Marketing team and play a vital role in transforming how our customers travel. You will leverage data to derive insights that drive decision-making, optimize marketing strategies, and improve customer engagement. Your analytical skills will be key in shaping our data-driven culture.

About UsAt Trainline, we are committed to revolutionizing travel by fostering a sustainable future. Our platform empowers millions of travelers to discover and book the most cost-effective tickets across various carriers and fares, utilizing our highly-rated mobile app, website, and B2B partner channels.Join Us on Our Journey As Europe’s leading downloaded rail app, we experience over 125 million monthly visits and facilitate £5.9 billion in annual ticket sales. Collaborating with over 270 rail and coach companies across more than 40 countries, we strive to make travel simple, seamless, eco-friendly, and affordable.As a FTSE 250 company, our diverse team of over 1,000 Trainliners hails from more than 50 nationalities and operates from key cities including London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With a focus on growth across the UK and Europe, now is the ideal time to join us on this exhilarating journey.Elevating Machine Learning & AI at Trainline Machine learning is pivotal to our mission of enabling millions to make sustainable travel choices daily. Within our AI & ML community, we develop and maintain production-grade systems that enhance search, pricing, personalization, and marketing optimization while increasingly deploying intelligent AI agents to transform customer support and journey discovery.You will collaborate with a dynamic team of Machine Learning Engineers and Data Engineers on innovative GenAI initiatives, including our Travel Assistant—an AI-driven tool that assists customers with refunds, journey updates, and ticket conditions, alongside developing Voice AI agents for effective customer query handling.Our team merges robust ML principles with the latest LLM frameworks (LangGraph, LangChain), RAG architectures, MCP integrations, and production monitoring tools such as Braintrust, all deployed on AWS. We foster an environment that values ownership, curiosity, and thoughtful experimentation.Role OverviewIn this role, you will focus on the design, development, and operation of LLM-powered and predictive ML systems in production. You will work on AI systems like our Travel Assistant and Voice AI initiatives while contributing to traditional ML services owned by the team.

About UsAt Trainline, we are passionate advocates for rail travel, dedicated to creating a greener and more sustainable future for travel. Our platform empowers millions of travelers to discover and book the most cost-effective tickets across various carriers, fares, and journey options through our highly-rated mobile app, website, and B2B partner channels.Join Us in Creating Great Journeys As Europe’s leading rail app, we attract over 125 million monthly visits and facilitate £5.9 billion in annual ticket sales. Collaborating with over 270 rail and coach companies across more than 40 countries, we envision a world where travel is simple, seamless, eco-friendly, and affordable. Today, as a FTSE 250 company, our diverse team of over 1,000 Trainliners from 50+ nationalities is based in London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With a strong focus on growth in the UK and Europe, this is an exciting time to join us on this high-speed journey.Introducing the Reliability & Operations Engineering Team Trainline is at the forefront of technology, delivering world-class digital experiences for millions of customers. Our platform predominantly operates on AWS, utilizing cloud-native architecture, modern CI/CD pipelines, and robust DevOps and SRE methodologies.The Reliability & Operations Engineering team (ReliabilityOps) integrates SRE, Incident Management, and Database Reliability to ensure our platform remains observable, reliable, scalable, and resilient. We work closely with product engineering teams to facilitate safe delivery, respond to incidents, and consistently enhance system reliability.We are in search of a mid-level Site Reliability Engineer who will be instrumental in driving our initiatives forward. You will bring solid production experience, a growth mindset, and a readiness to challenge and be challenged, all while contributing to platform reliability and developing broader technical ownership with guidance from senior engineers.

Join Trainline as a Senior Finance Manager, where you will play a pivotal role in shaping our financial strategies and driving operational excellence. You will lead a dynamic team, ensuring financial accuracy and compliance while enhancing our budgeting and forecasting processes. Your expertise will be instrumental in optimizing our financial performance, providing valuable insights to guide our business decisions.

Role overview Trainline is looking for a Senior Product Manager to join the TPS team in London. This role leads the direction of travel technology products, working closely with teams across the business to set product vision and strategy. What you will do Define and maintain product roadmaps for the TPS area Prioritize features based on business goals and user needs Work with engineers, designers, and stakeholders to deliver valuable updates Gather and analyze customer feedback, turning it into practical product improvements

About UsAt Trainline, we are advocates for rail travel, dedicated to creating a sustainable future for all travelers. Our platform empowers millions to discover and book the most cost-effective ticket options across various carriers through our award-winning mobile app, website, and B2B partner networks.Join Us on Our Journey As Europe’s leading rail app, we boast over 125 million monthly visits and an impressive £5.9 billion in annual ticket sales. We partner with more than 270 rail and coach companies across over 40 countries, striving to make travel straightforward, eco-friendly, and affordable.With our headquarters in London and teams spanning across Paris, Barcelona, Milan, Edinburgh, and Madrid, we are a FTSE 250 company fueled by a diverse team of over 1,000 professionals from 50+ nationalities. As we continue to expand our footprint in the UK and Europe, now is an excellent time to join our high-speed journey.About Trainline Partner SolutionsThe Strategic Business Development Manager role is positioned within the B2B Distribution’s Channel Partners & Business Development Team at Trainline Partner Solutions. Here, we collaborate with Online Booking Tools (OBT) and Global Distribution Systems (GDS) to provide access to rail content across multiple markets, enabling Travel Management Companies (TMC) and their corporate clients to book rail travel effortlessly.As the Strategic Business Development Manager, you will play a crucial role in nurturing and expanding relationships with key channel partners. This position encompasses managing existing accounts while also driving new sales opportunities through these partnerships, specifically focusing on the DACH region.You will act as the primary liaison between Trainline and our partners, facilitating strategic relationships to ensure a mutually beneficial rail offering. Key responsibilities include identifying, negotiating, and securing new opportunities, collaborating with channel partners to enhance rail bookings, and exploring new leisure travel markets such as OTAs, MaaS, and Tour Operators.

About UsAt Trainline, we are passionate advocates for rail travel, dedicated to crafting a sustainable and eco-friendly travel future. Our platform empowers millions of travelers to discover and reserve the most cost-effective tickets across various carriers and journey options via our award-winning mobile app, website, and B2B partnerships.Join the Journey with Trainline As Europe's leading rail app, we boast over 125 million monthly visits and generate £5.9 billion in annual ticket sales. Collaborating with over 270 rail and coach companies across more than 40 countries, we aim to make travel simple, seamless, and affordable.With our team of over 1,000 talented individuals from more than 50 nationalities, our offices span London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With growth at the forefront of our mission in the UK and Europe, now is the ideal time to embark on this exciting journey with us.The Data Engineering Team at Trainline As a Principal Data Engineer, you will serve as a senior technical leader, working across various teams to instill best practices, elevate engineering standards, and drive ambitious data, ML, and AI projects.You will proactively identify high-impact challenges across cross-functional squads, collaborating closely with Machine Learning Engineers (MLEs), ML Engineering Managers, and Product and Platform teams to create robust, scalable, and future-proof data foundations for ML-driven products, including our innovative Travel Assistant.Embedded Data Engineering (Embedded DE) is a vital aspect of your role. You will integrate within ML-led teams, shaping architecture, guiding implementation, and ensuring alignment between Data Engineering and ML Engineering best practices across Trainline.Key Responsibilities as a Principal Data Engineer: Act as a technical authority across multiple teams, establishing standards and frameworks for data and ML-adjacent infrastructure.Collaborate with ML teams to design, develop, and enhance data platforms that support AI and ML workloads.Influence technical direction while not holding direct line management responsibility.Partner with the Data Engineering team to drive excellence in data management practices.

Join Trainline as a Junior Data Engineer and embark on an exciting journey to revolutionize the rail travel experience through data-driven solutions. In this role, you will collaborate with a dynamic team of professionals, utilizing cutting-edge technologies to manage and optimize our data infrastructure. Your contributions will directly impact our mission to simplify rail travel for millions of customers.

Join our dynamic team at Trainline as a Junior Ruby Engineer! This is an exciting opportunity for those looking to kickstart their career in software development. You will collaborate with a talented group of engineers to design, develop, and maintain innovative applications that streamline travel for millions of users.As part of our London-based team, you will be immersed in a culture of learning and growth, where your contributions will have a real impact on our products and services. We are looking for a passionate individual who thrives in a collaborative environment and is eager to learn from experienced developers.

Trainline connects millions of travelers with rail and coach tickets across Europe through its app and website. The company partners with over 270 operators in 40 countries, supporting more than 135 million monthly visits and £6.3 billion in annual ticket sales. Trainline’s commitment to a sustainable future shapes its mission to make journeys simpler, greener, and more affordable. Headquartered in London and listed on the FTSE 250, Trainline employs over 1,000 people from more than 50 nationalities, with offices in Paris, Barcelona, Milan, Edinburgh, and Madrid. The business is growing its presence both in the UK and across Europe. Role overview This is a 12-month fixed-term contract based in London. The AI Transformation Lead for People will guide the adoption of AI within Trainline’s People function. The focus is on pinpointing high-value opportunities, shaping practical solutions, and integrating AI-driven tools and processes into daily People operations. Collaboration is central in this position, which bridges the People, Technology, and Data teams. The aim is to transform work across the employee lifecycle by introducing AI, automation, and agent-based workflows. This work is intended to increase efficiency, enhance employee experience, and free up resources for more strategic initiatives. What you will do Review People processes, systems, and workflows to identify valuable opportunities for AI implementation. Create and deliver an AI roadmap focused on outcomes, with an emphasis on speed and business impact. Partner with People leadership to select and prioritize a portfolio of AI use cases. Promote AI adoption in the People function and ensure alignment with Trainline’s broader AI strategy.

Join Trainline as the Head of Machine Learning Engineering, where you'll lead our innovative machine learning initiatives. In this pivotal role, you will spearhead the development and implementation of advanced ML solutions that enhance our customer experience and optimize our operations.

Trainline connects millions of travelers with rail and coach tickets, offering a range of options through its app, website, and B2B channels. With a focus on making travel simpler and more sustainable, Trainline partners with over 270 transport companies in 40 countries. The company processes more than 135 million visits monthly and handles £6.3 billion in ticket sales each year. Headquartered in London and present in major European cities, Trainline's team includes more than 1,000 people from 50+ nationalities. The Security team works to strengthen risk management as technology and AI risks change. Collaboration with teams across the business helps keep systems and data secure. Role overview The Senior Information Security Risk Analyst, based in London and reporting to the GRC Manager, will play a key role in advancing Trainline’s security risk management program. This position focuses on addressing both established and emerging risks, particularly those related to AI and cloud technologies. What you will do Manage information security risks, including traditional cyber threats and AI-specific risks such as data quality and model bias. Align risk management activities with Trainline’s business risk appetite. Work with Engineering, Data Science, Legal, and Internal Audit teams to maintain a broad perspective on information, cyber, and AI risks. Promote strong risk governance in a cloud-first, AI-driven environment. Conduct risk assessments for both existing and new AI use cases. Collaboration This role requires frequent interaction with both technical and business teams. The aim is to make sure risk management practices are practical and integrated into daily operations.

Join our dynamic team as a Data Analyst at carwow, where we are dedicated to revolutionizing the car buying experience. As a Data Analyst, you will play a crucial role in interpreting complex data sets and providing actionable insights that drive our business strategy.

About the Role arq is seeking a Data Analyst in London to help turn raw data into practical insights. This position supports decision-making and operational improvements across the company. What You Will Do Collect, process, and analyze data from multiple sources Translate findings into clear, actionable recommendations Work closely with teams across the business to ensure strategies are informed by data Who We’re Looking For Strong attention to detail Ability to explain complex data insights in straightforward terms Collaborative approach to working with colleagues from different departments This is a chance to build your analytical skills while contributing to an innovative company based in London.

About UsAt Trainline, we are passionate advocates of rail travel, dedicated to creating a more sustainable and eco-friendly future for travelers. Our platform empowers millions to discover and purchase the best value tickets across various carriers, fares, and journey options, all through our highly-rated mobile app, website, and B2B partnerships.Join Our Journey with Trainline As Europe’s most downloaded rail app, with over 125 million visits a month and annual ticket sales exceeding £5.9 billion, we partner with over 270 rail and coach companies across more than 40 countries. Our goal is to simplify travel, making it seamless, affordable, and environmentally friendly.As a FTSE 250 company, we are fueled by a diverse team of over 1,000 professionals from 50+ nationalities, located in cities such as London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With our ambitious plans for growth in the UK and Europe, now is an exciting time to join us on this fast-paced trajectory.Meet the Trainline Security Team Become part of our innovative Security Team, where we focus on developing, executing, and monitoring security measures to uphold a strong security framework in a rapidly changing landscape. Our commitment to enhancing Trainline's security capabilities involves close collaboration with various teams, including Cloud Engineering, Site Reliability Engineering (SRE), and Platform Engineering, ensuring that we integrate the latest technologies and best practices into our offerings.In this pivotal role, you will be responsible for protecting our digital ecosystems that generate billions in annual ticket sales and ensuring our systems remain secure, resilient, and forward-thinking against emerging threats.This position will contribute significantly to the team's evolution, requiring a proactive approach to execute the team’s vision effectively. We seek an experienced candidate who excels at prioritizing tasks and can communicate ideas clearly and persuasively.As the Security Operations Manager, your responsibilities will include… Leading a team of analysts and engineersTraining and mentoring junior team membersOverseeing threat intelligence initiatives and sharing insights with stakeholdersImplementing and managing security tools in the operational landscape

About UsAt Trainline, we are dedicated to revolutionizing travel by creating a greener and more sustainable future. We empower millions of travelers to discover and book the most cost-effective tickets across various carriers through our highly acclaimed mobile app, website, and B2B partner channels.Your Journey Begins with Trainline As the most downloaded rail app in Europe, we cater to over 125 million monthly visitors and facilitate £5.9 billion in annual ticket sales, collaborating with over 270 rail and coach companies across 40+ countries. Our goal is to make travel simple, seamless, eco-friendly, and affordable.Currently, we are a FTSE 250 company, powered by a diverse team of over 1,000 Trainliners from more than 50 nationalities, with offices in London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With a strong focus on growth across the UK and Europe, now is the ideal moment to join us on this exciting journey.Position Overview: Senior Engineering Manager - Media at TrainlineWe are on the lookout for a Senior Engineering Manager within our New Business division, responsible for leading our Media teams across Ads, Perks, and Sponsored Search. This pivotal role is central to our non-fee revenue strategy, aimed at optimizing and increasing revenue while enhancing the user experience. We strive to ensure that media placements feel organic, contextually relevant, and thoughtfully targeted, providing value to both our customers and partners. Our teams operate within highly collaborative squads that combine Engineering, Product, Data Science, Design, and Commercial expertise, where innovation and teamwork are fundamental to our approach to development. We seek a leader who can foster technical excellence, empower team members, and harmonize commercial objectives with a customer-centric mindset.As a Senior Engineering Manager at Trainline, You Will... Guide multiple teams and their Engineering Managers, facilitating their career growth through coaching and performance management.Oversee complete project delivery, ensuring timely and high-quality execution from planning to delivery.Collaborate closely with Product, Design, Data Science, and business stakeholders to align technical execution with business goals, leveraging domain expertise to guide teams.

Why Join the Technology Team at loveholidays?At loveholidays, we strive to innovate and lead the way in making travel accessible to all. Our mission is to provide customers with endless choices, unmatched convenience, and exceptional value for their vacations. Our technology team is the driving force behind our position as a personal holiday advisor, ensuring a smart and effortless getaway experience.Our technology is integral to our vision of becoming the global leader in packaged holidays. We are committed to pioneering cutting-edge innovations and achieving technical excellence that secures our future. Our systems manage trillions of holiday offers daily, enabling thousands of requests per second. Here, you can enhance your career by tackling complex challenges and expanding your expertise.Join us to make a meaningful impact in this exciting new chapter where you can take ownership of your success while contributing to our collective goals. We actively engage in discussions about technology and uphold key technology principles that have shaped our journey so far. As we expand our reach across Europe, we are seeking the brightest minds and the best technology to achieve our ambitious goals.The Impact You Will Make:Reporting directly to the Head of Analytics, the Principal Data Analyst will lead a high-performing team dedicated to delivering analytical solutions that address strategic questions, assess performance, and inform daily decision-making.Your Daily Responsibilities:Oversee a team of two analysts collaborating across various stakeholder groups, including operations, commercial, and platform.Serve as the primary analytics partner for the Supply domain, which is the commercial and technical engine that crafts the ideal holiday experience for our customers.Enhance the analytical influence on our strategic and tactical decisions, utilizing data to gain insights on performance optimization for both suppliers and customers.Establish benchmark standards for high-quality visualizations and reports using Looker and Looker Studio.Collaborate with stakeholders to develop measurement frameworks that reveal how our systems deliver value and identify opportunities for improvement.