Senior Full Stack Developer

zlyde is the software development company behind Athletia Sports' anti-piracy technology. We build and operate our own DRM solutions that automatically detect and eliminate online piracy of sports content – across social media platforms, illegal livestreams, and IPTV. In doing so, we protect the rights of renowned international sports federations, leagues, clubs, and broadcasters. Exciting technical challenges await you in a small, agile team. To take our Anti-Piracy platforms to the next level, we are looking for a Senior Full-Stack Developer with a strong focus on modern web development. Whether you are deeply rooted in the frontend or feel at home across the entire stack: what matters to us is less the exact job profile than the person behind it – someone who works independently, enjoys being part of a small, agile team, and is a great culture fit. What you will doFurther Development & Maintenance: Enhancing our Anti-Piracy platforms using React, TypeScript, and Next.js.User Interfaces: Designing and building high-performance, user-friendly interfaces for capturing, analysing, and reporting copyright infringements.Data Visualization: Visualising large volumes of data (millions of potential matches) in clear, intuitive dashboards and reports.Architecture & Quality: Helping shape software architecture, code quality, and technical decisions across the entire stack.Team Collaboration: Working closely within a small, agile team with short communication paths and direct interaction.Full-Stack Integration: Integrating backends and APIs, and managing data storage (including MongoDB, Redis, BigQuery) where needed. Our Developer WorkflowIn-house Product & Direct Communication: We build an internal tool for our own users and product managers. Developers and business owners work closely together and meet regularly.Modern Project Management: Requirements are cleanly structured, captured, and prioritized in Linear.Agile & Iterative: We follow a flexible, iterative workflow (Agile approach without rigid sprints, instead using daily standups for quick alignment).High Code Quality: Every code review is performed using a strict two-person approval process (4-eyes principle).Continuous Deployment: New features and optimizations are shipped continuously.User Feedback Loops: Direct user involvement guarantees rapid feedback cycles and continuous product improvement. What you should bringMost important to us are your experience with our core stack and the way you work: Languages: Several years of solid, senior-level experience in software development with TypeScript / JavaScript.Frontend & UI: Strong proficiency in React and hands-on experience with TailwindCSS (ideally also ShadCN). Next.js experience is not a strict prerequisite – we use Next.js Server Actions and GraphQL, and you can easily learn them on the job!Backend & Databases: Experience integrating and developing backends/APIs (Express, REST, GraphQL) and working with databases (such as MongoDB).Work Ethic: An independent, structured, and self-driven way of working with a proactive attitude.Team Fit & Passion: Enthusiasm to take ownership in a small, agile team, combined with a passion for global sports and an affinity for internet/social media.Languages: Excellent command of German and/or English. Our Tech StackLanguages: TypeScript / JavaScriptFrontend: Next.js (Server Actions), GraphQL, ShadCN, TailwindCSSBackend: Express, GraphQL, REST, Node.js (TSX), BunDatabase: MongoDB, Redis, BigQueryCI / CD & Source Control: GitHub Actions, Git & GitHubHosting: AWS Beanstalk, AWS ECS, AWS Lambda, AWS S3, MongoDB Atlas, VercelBI & Analytics: Google BigQuery, Google Data Studio (Looker Studio)Testing: Automated Regression Testing with Unit, Integration & E2E TestsProject Management: LinearLogging & APM: Datadog APM, Datadog LoggingAI Tooling: Advanced coding assistance via AI agents – OpenCode (Gemini, GPT-Codex 5.3) What you can expectImpactful Product: Work on a platform that actively protects the intellectual property of major international sports partners (federations, leagues, clubs, and broadcasters).Exciting Tech Challenges: Scalability, performance, and real-time processing of massive datasets.Flat Hierarchies: An agile, collegial environment with short decision-making paths and genuine creative freedom.True Flexibility (Remote-friendly): Work where you are most productive! We support 100% remote work from anywhere in Germany (with regular, e.g., monthly/quarterly team events and on-site meetups in Cologne) or hybrid work in our modern Cologne office.Security: A permanent, full-time position (40 hrs/week) starting as soon as possible. Interested?Sounds like a match? Drop us a line and tell us why you are a great fit – including your salary expectations and your earliest possible starting date: jobs@zlyde.com