Senior Full Stack Engineer – Greenfield Ads Platform (React + Modern Backend ( m / f/ d)

<h3>Company Description</h3><p><strong>About Rome2Rio</strong></p><p><strong><a href="http://www.rome2rio.com/">www.rome2rio.com</a> | Discover how to get anywhere</strong></p><p>At Rome2Rio, our mission is simple: help travellers get from A to any B. We make it easy to compare flights, trains, buses, ferries, and driving routes - providing everything users need to discover, plan, and book their journey. Behind the scenes, we tackle complex routing challenges, process massive datasets, and optimise search performance to deliver fast, reliable results to millions of users each month.</p><p>Rome2Rio is part of the Omio Group, a global multi-brand travel platform headquartered in Berlin. Together with Omio, we’re building the leading ecosystem for transport discovery and booking—serving a combined audience of over 900 millions of users globally.</p><h3>Job Description</h3><p>At Omio and Rome2Rio, we’re building the next generation of native travel advertising—a premium product suite connecting top tourism brands with tens of millions of global travelers.</p><p>We’re hiring a Senior Full Stack Engineer based in Berlin to join our Ads Product team, which is leading this high-impact, cross-brand initiative. You’ll work across both platforms, building the end-to-end architecture for a brand-new monetisation engine.</p><p>This is a rare opportunity to build from scratch, own full-stack systems across backend and frontend, and shape the advertising experience at global scale—right from Omio’s engineering hub in Berlin.</p><p><strong>Why Join Us</strong></p><ul><li>Strategic, greenfield product backed by senior leadership across the Omio Group</li><li>End-to-end ownership: shape ad delivery, tracking, reporting, and user interfaces</li><li>Work across both Rome2Rio and Omio—two of the world’s most trusted travel brands</li><li>Contribute to systems seen by millions of global users every day</li><li>Be part of a small, senior team building a modern ads stack from the ground up</li></ul><p><strong>Responsibilities</strong></p><ul><li>Build and scale backend services and APIs for native ad delivery and monetisation logic</li><li>Develop responsive user-facing components with React, TypeScript, and JavaScript</li><li>Integrate with internal systems and external ad platforms</li><li>Design clean API contracts and ensure seamless user experiences</li><li>Shape deployment, CI/CD, and monitoring pipelines</li><li>Collaborate with distributed teams across Berlin, Europe, and Australia</li></ul><h3>Qualifications</h3><ul><li>5+ years of professional experience in full-stack development</li><li>Strong frontend skills in React, TypeScript, JavaScript</li><li>Backend expertise in one or more of the following:<ul><li>– Node.js / Express / Nest.js</li><li>– Next.js with API/server-side experience</li><li>– .NET / C#</li><li>– Java (Spring Boot or similar)</li></ul></li><li>Deep understanding of scalable architecture, RESTful APIs, and modern deployment pipelines</li><li>Experience with relational or NoSQL databases (e.g., PostgreSQL, MongoDB, DynamoDB)</li><li>Strong product mindset and interest in building high-performance user-facing systems</li><li>Bonus: experience in ad tech, content platforms, or partner integrations</li></ul><h3>Additional Information</h3><p><strong>What’s in it for you? #LifeAtOmio</strong></p><p>This role offers the opportunity to work on-site at Omio’s vibrant Berlin office, where you’ll be part of a mission-driven, high-energy team.</p><p><strong>Key benefits include:</strong></p><ul><li><strong>Annual travel benefits </strong>to support your adventures and align with our mission.</li><li><strong>Education bonus</strong>, including two days off annually for professional development.</li><li><strong>An extra day off </strong>on your birthday to celebrate your special day.</li><li><strong>Fitness memberships with Urban Sports Club </strong>to keep you active and support your physical well-being.</li><li><strong>Employee Assistance Program </strong>offering mental health support and resources.</li><li><strong>A pet-friendly office</strong>, so you can bring your furry friends to work.</li></ul><p> </p><p><strong>Intrigued? Apply below in English.</strong></p><p>Additional Information</p><p><strong>Diversity makes us stronger </strong></p><p>We value diversity and welcome all applicants regardless of ethnicity, religion, national origin, sexual orientation, gender identity, age, or disability.</p><p>Join us at Omio and help shape a welcoming, efficient workplace that inspires both employees and guests every day.</p><p><u><strong>Recruitment scams: I</strong><strong>mportant notice</strong></u></p><p>Protect yourself from scammers, Omio wants to ensure your ongoing safety during the application process at Omio. Please keep in mind of potential scammers impersonating Omio recruiters (mainly via a global professional networking site, and messenger app's).</p><p>Remember, Omio never requests payment or sensitive