Senior Full Stack Developer (f/m/d)

think-cell

Join us as a (Senior) Full Stack Developer - Web (f/m/d) in Berlin  Our Story    We are looking for a Senior Full Stack Developer (Web Platform) to help shape and scale think-cell’s web platform and enable multiple teams to efficiently manage and publish content. This is not a role for someone who only wants to work within a fixed web stack or maintain existing templates. We are looking for a web engineer who enjoys solving complex technical problems, making sound architectural decisions, and building systems that remain robust and maintainable as requirements evolve. You will work across frontend and backend, improve the technical foundation of our web platform, and help us build scalable solutions that enable our teams to manage and publish content. Along the way, you will collaborate closely with stakeholders across design, marketing, product and engineering but with strong ownership over technical quality, long-term maintainability, and the overall direction of the platform.    Our Values As part of our team, you will embody and help shape the following principles that define us: * Forward Thinking: We embrace change and challenge the status quo. * Ownership: We take pride in our work and learn from our mistakes. * Customer First: We prioritize delivering lasting value. * Unified Team: We foster collaboration, respect, and integrity. * Strive for Excellence: We set ambitious goals and pursue quality.     What you will do * Design, build, and evolve our web platform features across front-end and CMS back-end. * Solve complex technical problems in a pragmatic way, balancing speed of delivery with long-term maintainability * Drive architectural improvements that make our web ecosystem more robust, scalable, and easier to work with * Build and improve our back-end functionality in PHP and Laravel for integrations, dynamic features, and internal tooling * Extend and optimize our CMS and publishing workflows to support efficient content operations without compromising technical quality * Improve performance, Core Web Vitals, accessibility, and technical SEO foundations across the platform * Work on the evolution of our current web architecture, while also challenging existing approaches when better solutions exist * Collaborate with design, marketing, product, and engineering teams to turn business requirements into well-structured technical solutions * Interface with back-end systems written in C++, ensuring reliable and efficient data exchange across system boundaries * Identify opportunities to improve developer experience, reduce complexity, and raise the overall engineering standard of the platform * Take ownership of technical tasks and help define best practices for modern web development at think-cell What we are looking for * Strong experience building and shipping production-grade web platforms, applications, or systems * A proven ability to solve non-trivial technical problems and work confidently in complex web related codebases * Strong full stack engineering skills, with solid backend experience in PHP, Laravel, or similar technologies and a frameworks * Strong frontend fundamentals, including HTML, CSS, JavaScript and modern approaches to building maintainable user interfaces * Good judgment when making architectural and technical trade-offs * A pragmatic mindset: you know when to build for flexibility and when to keep things simple * Curiosity and confidence to work with unfamiliar technologies or domains when needed * A strong sense of ownership and responsibility for code quality, maintainability, and technical outcomes * Experience collaborating across disciplines and communicating clearly with technical and non-technical stakeholders in English Nice to have * Experience with Statamic CMS * Experience with static site generation challenges * Experience with Deployment Tools such as Jenkins or similar tools * Familiarity with Tailwind, Alpine.js, or similar frontend tools * Experience improving performance-critical, SEO-relevant, or content-heavy platforms * Familiarity with Python for automation or tooling * Experience integrating with non-web backend systems or services     Why is think-cell the right place for you?  think-cell is a profitable, fast-paced software company based in Berlin. Our products simplify and enhance PowerPoint, used by over 1.3 million professionals worldwide including top consulting firms and global corporations.  We prioritize code quality, elegant algorithms, and a refined user experience. Owned and led by computer scientists, think-cell offers a developer-focused environment that attracts and retains top engineering talent.

ZEAL Network

ZEAL Network SE is a dynamic, international group of companies that has been creating exciting and innovative lottery experiences for over 20 years. As Germany’s largest provider of online lotteries through our brands LOTTO24 and Tipp24, and a trusted partner of Spain’s ONCE, the second-largest national lottery, we’re shaping the future of the lottery industry. We are passionate about driving innovation, as demonstrated by our newest brands, Freiheit+ and Traumhausverlosung, which bring fresh and exciting dreams to life. Additionally, through ZEAL Ventures, we invest in inspiring e-commerce start-ups like Omaze and DAYMADE, fueling fresh ideas and opportunities. We are looking for a (Senior) Full Stack Next.js Developer (f/m/d) to join our team and contribute to building scalable workflows, integrating backend services and defining reusable frontend patterns for a platform used by internal colleagues across multiple markets and business domains. With direct access to users, you will help shape practical solutions together with Product and UX. YOUR TASKS: * Shape and build a modern Next.js application from scratch, creating the technical foundation for a scalable internal platform * Take ownership of frontend topics and drive technical decisions * Work closely with product, design and backend teams in a lean, agile environment * Integrate and evolve RESTful APIs in collaboration with backend engineers * Ensure high-quality implementation of UI/UX designs with a strong focus on performance and scalability * Write and maintain tests to ensure reliability, security and performance * Contribute to deployment, monitoring and overall application stability together with DevOps * Identify and drive improvements in performance, user experience and conversion * Measure, analyze and iterate on product features based on data WHAT YOU OFFER US: * Strong experience as a Senior Full Stack or Frontend Engineer with a focus on modern web technologies * Deep expertise in JavaScript, React and Next.js (App Router, Server Components, Server Functions) * Proficiency in TypeScript, HTML5 and CSS3 * Hands-on experience with tools such as Tailwind CSS, React Hook Form, TanStack Query, Zod, Shadcn/UI or similar (Tailwind CSS is a must have, everything else nice to have) * Ability to write clean, maintainable and performant code and design scalable architectures * Solid experience integrating and working with REST APIs * Experience with testing strategies for frontend applications (nice to have) * Interest in using modern development tools, including AI-assisted workflows, to improve productivity and quality (nice to have) WHAT WE OFFER * State-of-the-art technologies and an agile environment (Check our Tech Radar: https://lotto24.github.io/tech-radar/) * A modern, dynamic culture grounded in the success of a leading-edge e-commerce company. * A talented team of ambitious, like-minded colleagues where your knowledge and ideas truly make an impact. * Ongoing personal growth, supported by an annual development budget of €1,500 to invest in your professional development. * Trust and autonomy, no micromanagement, just confidence in your ability to deliver and excel. * Flexible work options with a hybrid setup focused on results. * Unlimited vacation days in addition to your yearly 30-day vacation allowance. * Opportunity for workations abroad using our WorkFlex tool. * Monthly mobility allowance of €30 to use on the mobility option of your choice (e.g., the Deutschlandticket), plus access to a company bike leasing program. * Company pension scheme, provided in partnership with Degura, to support your future financial security. * Subsidized EGYM WELLPASS membership, with a contribution of only €25 per month, giving you access to a wide range of gyms and sports options across Germany. * Monthly company events, team activities, and informal gatherings, including our popular company-wide lunches provided four days a week. Not ticking every box or think you’ve got that unique set of skills we haven’t realized we need? Get in touch anyway, we’re always looking to add great people!

AVILOO

DEINE AUFGABEN * Design, develop and maintain robust backend systems and enterprise applications using Java and Spring Boot. * Build and operate distributed, microservices-based architectures, including containerization and deployment on Kubernetes. * Design, implement and extend REST APIs and integrate with internal and external systems. * Implement event-driven workflows and asynchronous processing with messaging technologies such as Apache Kafka. * Model data and optimize performance across relational and non-relational databases (PostgreSQL, Time Series Databases). * Develop batch and workflow processing, business logic and system integrations. * Ensure software quality through automated testing, code reviews and adherence to coding standards. * Contribute to architecture decisions and continuously improve development processes, scalability and system reliability. * Collaborate with analysts, product owners and other teams to align technical implementation with business requirements. * For all of these tasks, incorporate AI as a tool. * Creative freedom in a company that is set to increase its revenue a hundredfold in the coming years. * A workplace with a true start-up mentality, flat hierarchies, and fast decision-making. * Use of cutting-edge tools and artificial intelligence for optimization. DEIN PROFIL * 5+ years of professional experience in backend Java development. * Strong command of Java and the Spring / Spring Boot ecosystem. * Solid experience designing and consuming REST APIs and building microservices. * Hands-on experience with Docker. * Proficiency with relational databases (e.g. PostgreSQL, Oracle, MS SQL) and ORM frameworks (Hibernate / JPA). * Experience with automated testing (JUnit, Mockito) and build/version-control tooling (Maven, Git). * Comfortable working in an Agile / Scrum environment. * Professional working proficiency in English (B2 or higher). * Strong communication and presence, and a solution-oriented mindset. * Interest in exploring new topics. * Passion for using AI – you leverage technology to work faster, more accurately, and more efficiently. * Independent, precise, and pragmatic work style. * Team player who rolls up their sleeves when the situation calls for it. * A desire to work alongside colleagues in an office rather than alone at home. Nice to have: * Experience with event-driven systems and Apache Kafka. * Cloud platform experience (Azure, AWS or GCP). * Hands-on experience with Kubernetes. * Observability tooling (Grafana, Prometheus, OpenTelemetry) * Work with CI/CD pipelines. * Identity & access management (Keycloak / SSO) and API security. * Exposure to frontend frameworks (Angular, Vue or React) for full-stack collaboration. * Team-lead, mentoring or solution-architecture experience. WARUM WIR? * A meaningful product at the forefront of e-mobility and sustainability. * Modern technology stack and the autonomy to shape architecture and engineering practices. * Collaborative, cross-functional team with a strong quality culture. * Flexible, hybrid working arrangements and room for professional growth. * Reliable work-life balance – personally guaranteed by the CEO. * A performance- and team-oriented work environment where success is celebrated together. * The minimum salary for this position is € 3.954,00 gross/month in accordance with the Austrian IT Collective Agreement (full-time, 38.5h/week). Actual compensation is based on qualifications and experience and exceeds the collective agreement minimum.