Senior Software Engineer (Typescript/Next.js) (m/f/d)

Lead Software Engineer (Typescript/Next.js) (m/f/d)OverviewAt LeasingMarkt.de, we bring customers and dealers together to make car leasing more accessible, transparent, and efficient. With over 1,000 partner dealerships and nearly 2 million users across the DACH region and the Netherlands, we\\\'ve become Germany’s #1 leasing platform. We’re looking for a Lead Software Engineer to join our high-performance team at our Düsseldorf office.As a Lead Software Engineer, you will play a key role in designing and developing robust, scalable web applications that power one of the largest automotive leasing marketplaces in Europe. You\\\'ll collaborate with a cross-functional team to build and improve solutions that are not only effective, but also architecturally sound and easy to maintain. You will help us elevate the standard for software quality, stability, and long-term value.What You’ll DoImprove and extend our existing codebase while maintaining a high standard of code quality and test coverage.Design and implement scalable, maintainable, and well-structured solutions based on modern architecture principles.Drive architectural decisions with a focus on modularity, clean code, and long-term maintainability.Work in an agile, cross-functional team, contributing your ideas and pushing for continuous improvement.Set high quality gates for new modules, emphasizing testability and performance.Support and mentor other team members.What You BringStrong experience with TypeScript and modern React / Next.jsExperience with server-side rendering (SSR), static site generation (SSG), and API routes in Next.jsSolid understanding of performance optimization, caching, and CDN strategiesSolid understanding of component-based architecture, state management, and modern web APIsDeep knowledge of software design principles (e.g., SOLID, DRY, KISS)Passion for clean, testable, and maintainable codeFamiliarity with CI/CD pipelines, Git, and agile development practicesA collaborative mindset and willingness to share knowledge and best practicesExperience with or openness to PHP (Laravel) is a big plusExperience with cloud platforms (especially AWS) and containerization (Docker/Kubernetes) is a plusExperience with Tailwind CSS is a plusWhat we offerAn experienced, friendly team with flat hierarchies and open communicationTwo days of remote work per week and flexible working hours30 days of vacation + Christmas and New Year\\\'s Eve offOption for “workation”Modern office in the heart of DüsseldorfMuesli, fruit, and drinks included, including a portafilter machineGames corner (PlayStation, Switch, table tennis...)Company pension plan, job bike, corporate benefits, and much more #J-18808-Ljbffr