Senior Backend Engineer - Node.js/Typescript (m/f/x)

At DemoUp Cliplister, we’re revolutionizing how over 3,000 brands and retailers like MediaMarkt, Otto, Fnac, Microsoft, Logitech, and Bosch bring their products to life with innovative solutions like video, augmented reality, and user-generated content. Our unique approach combines content creation services with a state-of-the-art digital asset management platform and content syndication, making us a key SaaS player in Europe’s retail landscape. Join us to expand our network and make an impact!

Your role and your tasks:

As our Senior Backend Engineer (m/f/x), you will be a key contributor to bring our market-leading content platform to the next level for world-class retailers like MediaMarkt, Otto, and Fnac - and brands like Microsoft, Logitech, and Bosch.  

• Design and build cloud-native backend services in a microservices architecture (Node.js/TypeScript) 

• You will be planning and implementing AWS Lambda functions, containerized applications (ECS, K8s), asynchronous communication (SNS/SQS), REST APIs, and setting up monitoring and alerting of our critical infrastructure. 

• Take ownership of high-performance content delivery systems that handle 15+ billion monthly requests 

• Migrate legacy services to modern infrastructure, focusing on scalability, cost-efficiency, and CDN optimization (Cloudflare, AWS) 

• Collaborate with frontend, QA, and product teams to deliver new features and improve backend performance 

• Work closely with the CTO on system design, long-term architecture, and infrastructure decisions 

• Mentor developers, review code and architectural proposals, and promote engineering best practices 

• Ensure code quality, implement unit and integration tests, and contribute to well-documented systems (C4 modelling preferred) 

• Actively participate in sprint planning, reviews, and cross-team collaboration in an agile setup 

Now let’s talk about you:  

• 5+ years of backend development experience with JavaScript/TypeScript and Node.js.

• Strong experience with AWS cloud services, infrastructure design and system refactoring.

• Good expertise in writing IaC, best in AWS CDK. 

• Good documentation and modeling skills (like C4 modelling). 

• Solid understanding of SQL and NoSQL databases.

• Hands-on experience with CI/CD and Docker. 

• You are mastering both coding, architectural and Cloud Infrastructure skills. This enables you to not only implement tickets but also plan and architecture features and refactoring from the start. 

• Experience in designing and scaling distributed systems in a microservices environment.

• Strong communicator with a hands-on mindset, and comfortable working in agile, cross-functional teams. 

• Passionate about mentoring and supporting technical growth within the team. 

• Bonus: experience with Java, Kubernetes, or network/system engineering. 

• Fluent in English; German is a plus.

The perks of working with us:  

• You will work on the development of a high load market-leading content platform used by top brands & retailers.  

• You will work with the latest technologies like AWS & Typescript to realize your own ideas.  

• We offer a competitive salary, 30 days vacation, corporate benefits & more!  

• Your work mode is up to you - remote within Europe  

• You will work with the most modern tools and platforms that are in the market.  

• You will be a part of a very kind, loyal and pragmatic tech team.  

• We offer flat hierarchy & flexible working hours (our tech team has only some fixed meetings - time wise you are completely flexible).  

We celebrate diversity and are committed to creating an inclusive environment for all employees.