Senior Backend Engineer (TypeScript, NestJS/Node.js) (m/f/x)

About the role

Atolls is the world's largest community-driven shopping platform, active in 20+ markets. We help millions make smarter spending decisions across discovery, evaluation, and (re-)purchase by connecting people with the right brands and retailers. Our 1,000+ team across 10 countries builds products used every day at global scale, where you'll have real ownership and see your impact. Want to shape the destinations people rely on to shop with confidence? Keep reading. About This Role: We are looking for a Senior Backend Engineer (TypeScript, NestJS/Node.js) to join our Fulfilment team in Munich or remotely from Germany. In this role, you will build and improve the backend systems behind cashback, reward processing, partner integrations, and reliable fulfilment flows across Atolls' reward platforms. You will work on stable, scalable services that sit close to the customer experience, helping users earn, track, and redeem cashback with more clarity, trust, and fewer points of friction. Our Benefits: At Atolls, we believe in nurturing both your professional and personal growth. Here's what you can expect: • A culture that values personal and professional development, with internal mobility opportunities. • A supportive and open-minded team that embraces diverse perspectives and innovative ideas. • 32 days of paid vacation plus your birthday off, giving you the time you need to recharge. • A flexible hybrid working scheme to balance work and life. • Access to a learning budget and internal training to help you grow in your role. • Mental health coaching to support your well-being. • Regular global and local get-togethers to celebrate successes and build connections. • The possibility of taking a sabbatical after three years with the company. • A cloud-based company setup, providing flexibility and collaboration opportunities no matter where you are. *These are global benefits that apply to all employees, with additional local perks based on your location. Responsibilities: As a Backend/ Full-Stack Engineer, you will: Build and improve backend services that support cashback, redemption, fulfilment flows, and reliable reward experiences across Atolls platforms. Develop scalable APIs and services using TypeScript, Node.js, NestJS, and related backend technologies, with a focus on reliability and maintainability. Collaborate with Product, Engineering, and business stakeholders to translate fulfilment needs into clear technical solutions. Integrate and maintain partner APIs, third-party systems, and internal services that support transaction and reward processing. Improve performance, observability, testing, and documentation across services that sit close to the customer cashback journey. Guide technical decisions, contribute to code reviews, and support engineering quality through mentoring and knowledge sharing. Your Profile: We're looking for someone with backend engineering experience in scalable product environments, ideally with exposure to cashback, rewards, payments, fulfilment, or other transaction-heavy systems. You have 6+ years of experience in software development, with strong backend engineering skills. You are confident working with TypeScript, Node.js, NestJS, REST APIs, and service-oriented or microservice architectures. You have experience with cloud technologies such as AWS, GCP, or Azure, including databases, queues, event-driven systems, or distributed services. You understand common backend architecture patterns and can design systems that are scalable, maintainable, and reliable. You care about clean code, automated testing, documentation, observability, and long-term maintainability. You bring a structured approach to problem-solving and can balance technical quality with product and business priorities. You communicate clearly in English and enjoy working in a collaborative, cross-functional environment. Experience with GraphQ