Senior Full Stack Engineer - Loan Insurance - Node.js & Typescript - smava GmbH

We are smava – the online credit comparison platform. We make loans transparent, fair and affordable! With more than 300.000 satisfied customers, we are one of the biggest FinTech companies in Germany. Become now part of our vision to shape the digital future of the consumer loan market!

Our engineering teams operate with a high degree of independence. Each team is responsible for its own area within the platform, including the corresponding services and systems. At the same time, we foster close collaboration: Clear technical contracts and common standards ensure seamless interaction, while defined collaboration structures strengthen personal exchange. We rely on deep expertise, open dialogue, and joint decision-making to successfully implement our exciting and ambitious roadmap.

YOUR NEW TEAM

We are looking for a Senior Fullstack Engineer to join our cross-selling tech team contributing to its mission to connect customers to relevant financial products beyond consumer loans. By that the team plays an important role for the company’s strategy to strengthen its footprint as a financing provider beyond consumer loans. That is why we build and run scalable services that offer customers valuable additions like income protection insurance and other cross-selling products at the right moment in time in their individual journey. Our work is rooted in modern engineering practices and a strong sense of ownership. We rely on a robust and modern tech stack including Node.js, TypeScript, React, MySQL, Postgres, AWS, GitHub Actions and Terraform to deliver value in an efficient and reliable manner.

WHAT YOU WILL BE DOING

• Work in a distributed environment with different NodeJS and Typescript services that run on Kubernetes.
• Build and maintain UIs based on React / Typescript, both customer-facing as well as for internal users.
• Conceptualize and build new functionality, improve existing systems and services and optimize business-critical performance and efficiency parameters.
• Integrate and maintain third-party services and external systems, ensuring reliable data exchange, secure communication, and seamless interoperability within our platform ecosystem.
• Design and implement asynchronous, event-driven communication using AWS SNS and SQS to ensure scalable and resilient service interactions.
• Implement and maintain real-time features using WebSocket technologies (e.g., socket.io) with scalable adapters such as Redis.
• Define and evolve inter-service contracts using Protobuf and ensure consistent validation across services using schema validation libraries such as Zod.
• Ensure secure authentication and authorization flows using OAuth, JWT, and external identity providers.
• Take active part in the decision-making processes of your team (goals, concepts, timelines, stack, etc.).