• Own features end-to-end: From discovery and technical design to implementation, rollout, and iteration, deliver experiences that help customers pay, get paid, and stay in control of their finances. • Drive technical decisions in your squad: Shape solutions with Product, Design, and Backend by clarifying tradeoffs (UX, performance, security, and time-to-market), not just implementing tickets. • Raise app reliability and maintainability: Improve architecture, performance, and test strategy so we can scale without compromising stability. • Solve complex mobile challenges: Contribute to real-time synchronization, resilience patterns, and smooth navigation flows in a large, modular codebase. • Contribute to the team’s growth: Lead by example in code reviews and technical discussions, share patterns, and mentor peers to raise the bar on Android craft and delivery.

Hey, You! Nice to meet you! As the super-platform for non-professional soccer in Europe, we bring pro-level experiences (news, data, gamification) to the mega-community of +190 million footballers and soccer fans. We are a startup founded in 2021 in Cologne, Germany - our team consists of 35+ smart and "hungry" members working on Prematch in our offices in Cologne and Berlin (Marketing & Business Team) or remotely across Europe (Tech & Product Team). We are supported by partners like adidas, Krombacher, Flaschenpost and Scalable Capital, but there are still some bangers in the pipeline that you can be excited about! Furthermore, we are supported by successful investors like Ralf Reichert, the CEO of ESL or the entrepreneur Verena Pausder. Already a good match if you.... - Location: you’re excited to work either from one of our offices (Berlin Mitte, London, Cologne) or fully remote - whatever suits you best. - Experience: you have at least 8 years of relevant experience and feel confident in your role. - Mobile expertise and full-stack approach: you have hands-on experience building and maintaining mobile apps (iOS, Android, or cross-platform), understand the specific challenges of mobile development, and you want to build full-stack using agentic engineering. - Startup mindset: you enjoy working in a growing team and dynamic environment – and ideally, you’ve already gained experience in a startup or similarly fast-paced setting and like building things from the ground up. Main information - Start: Immediate (flexible) - Workload: Full-time - Area of responsibility: Tech - Fast, easy & transparent application process Your mission - Product Thinking: You develop with a clear product focus and make technical decisions with user experience, business value and long-term scalability in mind. - Feature Development: You build new features for our Flutter app and our entire stack – using a modern, AI-driven development approach. - Ownership: You work independently within a product team, take ownership and actively contribute your experience to technical development. - Engineering Excellence: You help raise code quality within the team and set high standards for maintainability, structure and technical excellence. - Review Culture: Through thorough code reviews, you ensure that our mobile codebase remains consistent, robust and of high quality. - Product & Design Collaboration: You work closely with Product and Design, constructively challenge requirements and translate them into robust technical solutions. - App Performance: You continuously improve the performance, stability and reliability of our mobile application. - Mobile Architecture: You actively shape architectural decisions in the mobile domain and contribute to a scalable technical vision. What do you need - AI-First Development: You use AI not as an add-on, but as an integral part of a modern development workflow. - Flutter Expertise: You have strong knowledge of Dart and Flutter and develop high-performance, high-quality mobile applications. - Architecture & Code Quality: SOLID principles, clean structures and sustainable code quality are second nature to you. - Mobile UX: You understand how good mobile products work – from UI/UX principles to proven design patterns. - Quality Mindset: You work in a test-driven and quality-oriented manner and are familiar with common testing methods in software development. - Collaboration: You impress with a positive, proactive approach and actively contribute to strong team dynamics. Advantage but not a must - Full-stack thinking: Ideally, you’ll also have knowledge of back-end and DevOps. - Platform expertise: Experience in native Android/iOS development is a strong plus. - Firebase stack: You have practical experience with Firebase as a building block of modern mobile architectures. - Product Analytics: You use tools such as Amplitude and Braze to understand user behaviour and specifically increase engagement. Why us? - Be part of it from the start – Shape how Prematch grows and transforms amateur football. - Competitive salary – You’ll be paid fairly and transparently. - Employee participation (VSOP) - directly benefit from the company’s success. - Three cool offices in Cologne, Berlin, and London - true startup vibes to work and grow together. Want to visit another office? We support that too! - Remote work - depending on your distance to the office, you work 1–3 days a week onsite and the rest flexibly remote (working from home at the start and end of the week is quite popular) - whatever suits you best. Tech & Product roles sometimes offer 100% remote. - Remote, even from afar - Whether it’s a week of sunshine abroad or a few days with family - we allow flexible work from outside your usual location. - Team spirit - whether in the office or at home, we use cool tools and a virtual office to keep the team tightly connected. - Modern IT equipment - We provide the tools and devices you need to be productive. - 27 vacation days per year - For your rest and to recharge. Plus special arrangements if you’re a parent, so you can better balance family and relaxation. - Team events at our locations - Whether after work in Cologne, Berlin, or London: we regularly bring teams together to connect and grow stronger. - Offsites with the whole team - Four days out of the daily grind with the entire team: trips, brainstorming, onsite collaboration, and real team spirit. Right up your alley? Then let's not waste any time! All we need is your current CV. You can easily submit further information about yourself in our short application form. Lisa will then get in touch with you! We can't wait to find out more about you!

Android OS Developer Location: Washington United States Job Description: Zachary Piper Solutions is seeking an Android OS Developer to support a company focused on modernizing secure, mission‑critical embedded systems for U.S. defense and national security programs. This position is remote within the United States. The Android OS Developer will support the development, hardening, and long‑term sustainment of a customized Android operating system used in next‑generation secure field devices. This role directly supports the modernization of critical technology relied upon by service members in operational environments. Responsibilities for the Android OS Developer include: - Developing and maintaining customized Android Open Source Project (AOSP)-based operating systems in a secure, disconnected environment - Supporting system‑level Android development, including OS services, system applications, and custom launchers - Working with Linux‑based embedded systems, multi‑threaded software, and long product lifecycles requiring maintenance and technology refresh - Implementing and supporting secure storage, encrypted media handling, and integrity verification mechanisms - Performing system debugging, bug fixes, performance tuning, and supporting controlled upgrade paths for non‑internet‑connected systems Required Qualifications for the Android OS Developer include: - 3+ years of experience in software development supporting embedded Linux and/or Android operating systems - Hands‑on experience with AOSP development, C++, Java, and object‑oriented design - Experience working in low‑level, system‑focused environments (OS services, frameworks, kernel interaction, or device‑adjacent software) - Bachelor's degree in Computer Science, Software Engineering, or a related technical field (or equivalent experience) Compensation for the Android OS Developer includes: - Salary Range: $100,000 - $150,000 depending on experience - Full Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401(k), Tuition Reimbursement, Sick leave as required by law #LI-MZ1 #LI-REMOTE Keywords: Android OS Developer, AOSP Developer, Embedded Android Engineer, Linux Embedded Developer, Android System Engineer, C++ Developer, Java Developer, Secure Systems Engineer, Defense Software Engineer, Cleared Software Engineer, Embedded Linux, Hypervisor, Device Drivers, ARM Architecture, System-Level Android Development

• Own both our iOS and Android applications. • Work with one of our international clients who is a financial technology service that lets consumers buy products now and pay for them over time through installment plans. • Work in a lean, fast-moving environment — candidates who take ownership and work well async are a strong fit.