{"id":2438621,"url":"https://alion.io/job/nederlandse-spoorwegen-android-developer-team-guide","title":"Android Developer Team Guide","company":{"id":47850,"name":"Nederlandse Spoorwegen","domain":"ns.nl","url":"https://alion.io/company/ns","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Career sitemap","truth_index":{"grade":"B","score":76,"open_postings":23,"ghost_share":0,"stale_share":0.957,"repost_share":0,"time_to_fill_p50_days":23,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Mobile","role_family":"Mobile","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Utrecht, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":3743,"max":6491,"currency":"EUR","period":"month","gross":true,"usd_annual":87072},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Espresso","optional":false},{"name":"Java","optional":false},{"name":"Jetpack Compose","optional":false},{"name":"Kotlin","optional":false},{"name":"Kotlin Coroutines","optional":false},{"name":"Scrum","optional":false},{"name":"A/B Testing","optional":true},{"name":"CI/CD","optional":true},{"name":"Modularization","optional":true}],"status":"live","first_seen_at":"2026-10-13T09:53:28Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-13T16:10:20Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Why choose NS as an Android Developer?\nYou’ll have the unique opportunity to build and improve an app used by over 4 million users every month.\n\nYou’ll join a forward-thinking DevOps team with the freedom to contribute ideas and experiment with new technologies.\n\nTeams are fully responsible for the entire process, from discovery and user research to design, development, and continuous improvement. We build, host, and operate our own app, web services, and backend APIs: \"You build it, you run it, you love it.\"\n\n“What excites me most is the scale. Every feature we build can improve the journey of millions of travellers. We have the freedom to innovate, work with modern Android technologies, and see our ideas make a real impact every day.”\n- Android Developer, Team Guide\nWhat you'll do as an Android Developer at NS\nAs an Android Developer, you will be responsible for the continued development and maintenance of the NS app. You'll build user-friendly features that meet the highest quality standards. Examples include improvements to the journey planner, booking flow, customer service features, personalization, and integrations with mobility partners.\nCollaborate closely with UX designers to create user interfaces and features that meet customer needs.\n\nWork together with the Business Analyst and Product Owner to translate functional and business requirements into technical solutions.\n\nWrite clean, well-structured code and proactively tackle legacy code when you encounter it.\n\nImprove the quality, reliability, and robustness of the NS app by maintaining strong code coverage.\n\nStay up to date with the latest Android development trends and technologies.\n\nHier ga je werken\nYou will join Team Guide, part of the Passenger Experience domain (Reizigers). You can work from our headquarters near Utrecht Central Station or from home.\nTeam Guide is a multidisciplinary DevOps team consisting of:\nAndroid Developers\n\niOS Developers\n\nBackend Developers\n\nA UX/Visual Designer\n\nA Business Analyst\n\nA Scrum Master\n\nA Product Owner\n\nTeam Guide plays a key role in informing and guiding millions of travelers every day. The team develops and maintains innovative features that provide travelers with relevant information at the right moment to make traveling with NS easier. Also the team is in charge of proactively warning for planned works, disruptions, and incidents. Example features include push notifications about engineering works, disruption alerts, personalized travel information, and proactive travel guidance based on expected journeys.\nThrough these solutions, Team Guide directly contributes to several strategic NS objectives, including increasing app usage, further personalizing the travel experience, improving IT quality, and reducing customer contact by providing travelers with faster and more accurate information.\nAndroid developers across NS meet weekly to showcase their work, discuss shared challenges, and drive technical improvements. During these sessions, you can make a real impact and help shape the future direction of Android development within NS.\nThe Codebase\nThe NS app codebase consists of more than 120 modules, structured according to Clean Architecture principles.\nWhile part of the application still contains legacy code (including Java), the team actively modernizes and replaces outdated components. All new features are built using:\nKotlin\n\nKotlin Coroutines\n\nJetpack Compose\n\nOur in-house design system Nessie in Jetpack Compose (NS Design System)\n\nDit zijn de functie-eisen\nYou are eager to learn and quick to adapt. You identify opportunities for improvement and bring others along in realizing them. Important Agile principles such as collaboration, responding to change, and delivering value in short iterations fit naturally with your way of working. You communicate effectively, show initiative, and are confident in making decisions.\nWhat you'll bring\nA Bachelor's or Master's degree in Software Engineering or a related field.\n\nAt least 2-3 years of experience developing Android applications using Kotlin, Kotlin Coroutines, and Jetpack Compose within a Scrum or DevOps environment.\n\nExperience with Clean Architecture and writing unit tests and Espresso tests.\n\nStrong team spirit. Your flexibility and collaborative mindset help strengthen the team.\n\nEnthusiasm, a strong sense of ownership, and an interest beyond your own area of expertise.\n\nA genuine interest in developments within the Android ecosystemcontinuous learning, both technical as well as personal.\n\nThe ability to communicate effectively in either Dutch or English.\n\nNice to have\nExperience with:\nAnalytics, Test-Driven Development (TDD), and Data-Driven Development.\n\nCI/CD pipelines.\n\nCode modularization.\n\nFeature flags and A/B testing.\n\nRefactoring legacy code.\n\nSnapshot testing tools such as Paparazzi.\n\nBuilding digitally accessible mobile applications.\n\nExperience working as a T-shaped professional with expertise in one area and a willingness to contribute across multiple disciplines.\nA full-stack mindset, capable of looking beyond your own specialization and collaborating across the entire development lifecycle.\nDiversity & Inclusion\nAt NS, we believe diversity and inclusion make collaboration more enjoyable and lead to better results. Regardless of your background, beliefs, or life experience, we are primarily interested in your vision, skills, and what you can contribute to this role.\nDit zijn de arbeidsvoorwaarden\nWorking at NS means you can make a real difference in the dynamic world of sustainable mobility. You help keep the Netherlands accessible and connected for everyone. At NS, you'll enjoy a great deal of freedom and plenty of opportunities for personal and professional development. We promise that no two days are ever the same. And as one of the most attractive employers in the Netherlands, we offer even more. For this position, you can expect:\nA salary in Scale 60, ranging from €3,743 to €6,491 gross per month (based on a 36-hour workweek and depending on your experience)\nThe opportunity to work from home and enjoy flexible working hours (by mutual agreement)\nA 36-hour working week\nA 3% year-end bonus, 8% holiday allowance, and an excellent pension scheme\nA permanent contract after one year, subject to good performance\nFree travel by train in 2nd class; travel in 1st class is available for a small personal contribution\nYour family can travel free of charge during off-peak hours\n 144 hours of statutory leave (based on full-time employment), plus additional leave depending on age (at least one extra week)\nThe option to exchange three Christian public holidays for three non-Christian public holidays\nDiscounts on European rail travel after one year of employment with NS\nA flexible benefits plan, including options such as a bike scheme, additional pension contributions, or extra vacation days\nWant to learn more? Take a look at our employment conditions and collective labour agreement (CAO).\nSolliciteren naar deze baan\nApply directly using the application button. Within a few minutes, you will receive an automatic confirmation of your application, and we will get back to you within two weeks.\nYou can address your application to Jeroen van den Berg, Corporate Recruiter IT.\nDo you have any questions about the recruitment process? Please contact Karin from our Front Office at .\nWould you prefer to speak to someone by phone? Call our Front Office at +31 (0)88 671 3666.\nGood to know\nA background screening, including a Certificate of Good Conduct (VOG), is part of the recruitment process. This also includes signing an integrity declaration and a confidentiality agreement.\nWe believe it is important that everyone who works with us feels welcome and included. This is reflected in our hiring policy. Read more about it here.\nWe are recruiting for this position directly and are not seeking agency support or acquisition services. This role cannot be filled on an interim basis. Please visit our contractor hiring page for interim opportunities.\nCount on NS\nWorking at NS means you can make a real difference in the world of sustainable mobility. You help keep the Netherlands accessible and connected for everyone. At NS, you are given a great deal of freedom and responsibility. We promise that no two days are the same. Our core values are openness and reliability. 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