Senior Software Engineer

About the role As a Senior Android Developer you will be working for Transcend Retail Solutions, a subsidiary of Tesco, set up to sell the same solutions deployed by Tesco powering their $8bn grocery online business. With world-leading efficiency and scale, we are on a mission to help other retailers around the world create mobile experiences that their customers, colleagues, and stakeholders love. You will be responsible for the end-to-end development and quality of Transcend's Android applications, catering for the varying needs of our customers. You will work closely with colleagues from Engineering, Product and Customer Success to shape, build and deploy robust, high-performance Android applications used at scale. What is in it for you Hybrid working We know life looks a little different for each of us. That's why at Tesco, we always welcome chats about different flexible working options. Some people are at the start of their careers, some want the freedom to do the things they love. Others are going through life-changing moments like becoming a carer, adapting to parenthood, or something else. So, talk to us throughout your application about how we can support. This role requires you to be based in or near Kraków, as you will spend 60% (3 days) of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Benefits Tesco is a diverse and exciting employer, dedicated to being aplacetogeton, providing career-defining opportunities to all of our colleagues. If you choose to join our business, we will provide you with (for all): Permanent contract from the go – as a sign of our trust in your abilities MacBook as your tool for work Learning opportunities - certified technical training and learning platforms like Udemy Referral Bonus Sports activities with a personal trainer in the office Benefits for colleagues on employment of contract only: Additional 4 days of paid leave to support your well-being and family life Up to 20% yearly salary bonus – based on both individual and business performance Private healthcare (LuxMed) Cafeteria & Multisport Supporting those, who are not yet eligible for full holiday entitlement, by expanding their pool from 20 to 25 days Relocation Help IP Tax Deductible Costs If that sounds exciting, then we'd love to hear from you Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we're committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require. You will be responsible for As a Senior Android Developer at Tesco, you will: • Design, development, delivery and maintenance of core Android features from concept to production, redefining complicated flows into performant, robust and intuitive experiences. • Own the end-to-end mobile engineering lifecycle: requirements, architecture, implementation, testing, CI/CD and post-release monitoring. • Build observable, testable code using various types of tests, use telemetry/ analytics and crash reports to measure impact and application health. • Work with backend engineers to define and implement REST API integrations, caching strategies, offline support and data persistence • Contribute to and evolve our mobile engineering tooling and CI/CD pipelines, automated release processes and internal app distribution. • Partner with Product Managers to understand and define user problems, scope technical solutions and build testable prototypes for both new and existing features • Collaborate with UX researchers and designers to translate wireframes and prototypes into pixel-accurate and accessible Android UI • Promote inclusive and accessible mobile experiences following Android accessibility guidelines and good UX practices • Help expand and maintain our mobile component library / design system for Android to keep UI consistent and maintainable. You will need • 5 years of professional mobile development experience, with a strong focus on native Android development. • Solid knowledge of Kotlin (preferred) and practical Java experience where applicable. • Deep knowledge of Android SDK and platform fundamentals: activity/fragment lifecycle, intents, background work, services, notifications, storage and permissions. • Experience with modern Android UI: Jetpack Compose and/or AndroidX View system; ability to pick the right approach per context • Practical experience with architecture patterns, state management (experience with Redux is preferred), concurrency and async programming. • Proven track record of writing testable code and building test suites (unit tests, integration tests, UI tests). • Knowledge of CI/CD, automated testing pipelines and production release processes for Android • Experience in multi-module and multi-flavour applications • Hands-on experience profiling and improving app performance and memory usage, and diagnosing crashes/ANRs via tools like Android Profiler or Crashlytics. • Comfortable working with analytics, feature flags, remote config and using metrics to inform product decisions. • Strong collaboration skills - you've partnered closely with product, design, QA and backend engineers in cross-functional teams. • Excellent written and verbal communication and the ability to present technical trade-offs to non-technical stakeholders. • Experience mentoring and coaching engineers and helping set standards for architecture and code quality. • A pragmatic approach to engineering: you care about shipping, quality and maintainability. • Previous experience in retail, logistics or enterprise mobile products is an advantage. About us Tesco is a leading multinational retailer, with more than 330 000 colleagues. Our software is used by millions of people across several countries every day. Whether it's the tills and websites our customers use, or the systems our colleagues and partners use, you'll play your part in keeping it running like a well-oiled machine. And when a business problem pops up? You and the creative minds in our team will be challenged to solve it. As Tech Hub we cooperate within the group of Tesco Technology Hubs located in the UK, Poland, Hungary, Czech Republic and India. What our colleagues like the most at Tesco: We develop our own products We make an impact; large scale of operation Accountability and respect are given to us We cooperate and support each other There are great colleagues who are divided into small teams here We can develop and learn new things