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. Our team of 250 professionals from diverse backgrounds is united by a visionary mindset, a passion for collaboration, and a commitment to inspire dreams. At ZEAL, we empower our people to think ambitiously and work together toward a shared purpose: helping people imagine and achieve their aspirations. Welcome to the Dream House Raffle team. We are Germany's first raffle where players have the chance to win a real property. Every dream home is guaranteed to be raffled off, regardless of the number of participants. And by the way, we support selected charitable organizations in Germany with every ticket sold. We are looking for you to promote our corporate start-up from the Zeal Network SE with exciting stories, emotional winner highlights and, of course, absolute dream homes. The role: We are looking for a Senior React Developer (f/m/d) to join our team developing traumhausverlosung.de, an innovative charity lottery product. As part of our small development team, you'll contribute to customer-facing features and help optimize our conversion funnels. Your tasks: Develop and maintain our customer-facing webshop using React and Next.js Work closely with product-, design-, marketing- and tech-colleagues in a very lean and agile manner (startup mentality) Integrate RESTful APIs in coordination with Backend Developers Ensure technical implementation of UI/UX designs meets quality standards Write and maintain tests for functionality, security, and performance Support deployment automation alongside our DevOps team Contribute to performance optimization and conversion rate improvements Participate in measuring and iterating on product features What you offer us: A passion for web development with an up-to-date tech stack using React Experience working with Next.js (App Router, Server Functions, Server Components), TypeScript, and HTML5/CSS3 Hands-on experience with modern frontend tools around React, such as Tailwind CSS, React Hook Form, TanStack Query, Zod, shadcn and Lucide Experience implementing responsive, mobile-first designs “You build it, you run it” mindset and experience in deploying, monitoring, and maintaining a web application Strong in writing performant code and clean architectures Experience integrating and working with REST APIs Understanding of web performance optimization techniques Ability to translate business requirements into technical solutions Strong communication skills for effective team collaboration Proactive approach to knowledge sharing and peer support What we offer: State-of-the-art technologies and an agile environment (Check out our Tech Radar here: 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 our product-focused organization and 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, offering the freedom to work where and how you’re most productive. Generous time off: enjoy unlimited vacation days in addition to your 30-day vacation allowance, with the opportunity for workations abroad using our WorkFlex tool. Monthly mobility allowance of €20 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. Quarterly company events where we gather to celebrate, along with regular team activities and informal gathering, a favorite being our Healthy Tuesday lunches or Pizza Thursdays in the office Not ticking every box or think you’ve got that unique set of skills we haven’t realised we need? Get in touch anyway; we’re always looking to add great people