Senior Full Stack Engineer – Credit Card (f/m/d) – Node.js, React & Typescript

smava GmbH; Berlin; Vor Ort; EUR 90.000 - 120.000; Vollzeit

Benefits dieser Stelle

30 days vacation

Company pension

Lunch subsidy

Office with roof terrace

Sports activities

Zusammenfassung

smava GmbH is seeking a Senior Full‑Stack Engineer for the Credit Card team to deliver scalable, customer‑friendly solutions from application to approval. You will work with a distributed TypeScript/Node.js backend and a React UI on AWS, focusing on performance, reliability and observability.

You will contribute to AI‑driven enhancements, own end‑to‑end product delivery, and collaborate closely with Product Owners in an agile, startup‑like environment.

Qualifikationen

• Expert level experience with Node.js and TypeScript.
• Experience building and supporting React.js applications.
• Experience scaling services to handle traffic spikes and optimizing database queries.
• Experience with event-driven architectures using AWS SQS/SNS.
• Proven experience with AWS and containerized microservices (Kubernetes, Terraform).
• Familiarity with observability stacks (Loki, Grafana, Tempo, Mimir/Prometheus).
• Experience driving cross-team technical projects.
• AI-first approach to software development and AI-assisted tooling.

Aufgaben

• Develop distributed services in TypeScript/Node.js and UI in React.
• Ensure high availability, observability, and performance of services.
• Collaborate with Product Owner to plan and refine features.
• Own end-to-end development, operation, and maintenance of products.
• Contribute ideas on applying AI to improve workflows and customer experience.

Kenntnisse

Node.js & TypeScript

React.js

AWS

Kubernetes

Terraform

Event-driven architecture

AI‑first development

Tools

AWS

Kubernetes

Terraform

MySQL

LGTM stack (Loki/Grafana/Tempo/Mimir/Prometheus)

Jobbeschreibung

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 Development teams are distributed along the customer journey, each being completely in charge of their corresponding part of the platform and respective services and systems. They operate in an autonomous and self-managed way: we live up to our belief in effective network structures where teams are enabled to make their own decisions within our exciting roadmap. This empowers everyone to a great extent - by sharing responsibility and decision-making amongst all colleagues.

YOUR NEW TEAM

We are looking for a Senior Full‑Stack Engineer to join our Credit Card team. Our mission is to deliver a seamless, transparent and customer-friendly credit card experience — from application to approval and beyond. You will play a key role in building scalable full‑stack solutions that help customers access credit products with confidence and ease.

WHAT YOU WILL BE DOING

• Work in a distributed environment with TypeScript/Node.js services and a TypeScript React-based UI, running on AWS.
• Ensure our services and user interfaces operate with high stability, reliability and observability, with traffic properly managed, monitored and tracked.
• Build intuitive, seamless and high-quality customer experiences across the credit card journey.
• Design and implement new features, improve existing systems and services and optimize business‑critical performance, scalability and efficiency.
• Actively contribute ideas on how artificial intelligence can improve our systems, workflows and customer experience.
• Take an active role in your team’s decision‑making processes, including goals, technical concepts, timelines, architecture and technology choices.
• Work closely with the Product Owner to plan, refine and continuously develop new features within the team’s domain.
• Be deeply involved in the end‑to‑end development, operation and maintenance of the team’s products, following our “you build it, you run it, you own it” philosophy, including DevOps responsibilities

YOUR PROFILE

• Expert level professional experience with Node.js and TypeScript.
• Experience building, maintaining and supporting React.js applications.
• Experience scaling services to handle traffic spikes, including the use of caching strategies and optimization of MySQL queries.
• Experience working with event‑driven architectures, including message-based communication and asynchronous processing using technologies such as AWS SQS and SNS.
• Expert level experience with AWS and containerized microservice infrastructures, ideally using Kubernetes and Terraform.
• Familiarity with the LGTM observability stack: Loki, Grafana, Tempo and Mimir/Prometheus.
• Proven experience driving cross‑team and cross‑functional technical projects.
• Experience applying an AI‑first approach to the software development lifecycle, using AI‑assisted tools and practices to improve development speed, code quality, testing, documentation and engineering productivity.
• Experience working with additional programming languages beyond TypeScript/JavaScript is a plus.
• A passion for engineering excellence, clear communication and knowledge sharing.
• A proactive mindset, strong sense of ownership and willingness to take responsibility in a collaborative environment.
• Experience working in agile environments, ideally in startup‑like companies or scale‑ups with flat hierarchies.

WHAT WE OFFER

• Our team comes from over 50 nations and you can expect an open and dynamic working environment with plenty of room for your further development
• We actively work to create a diverse and inclusive work environment by sharing our different skills, ideas and experiences as a team and representing diversity within the company
• For your personal development, we offer internal career programs, further training opportunities and language courses (German)
• A modern equipped office with roof terrace, lounge and much more
• We value our successes and celebrate them through regular events, such as the Company Lunch, the Table Tennis Tournament or our Summer Party
• Get your lunch delivered right to the office and save at the same time through the subsidy from smava
• Your rest is important to us so we offer 30 days of vacation, parents benefit from 10‑child sick days in addition to the statutory entitlement
• To support your physical and mental health, we offer collaborations with sports providers and weekly sports activities in our office
• We support social projects and subsidize your ticket for public transport so that you can get to your destination in an environmentally conscious way
• Enjoy exclusive offers from a large number of brands and secure the best prices when buying through our Corporate Benefits partnership
• With smava you are secured in your old age and benefit from a subsidized company pension plan

At smava we celebrate diversity and stand for an environment that represents a variety of backgrounds, perspectives and skills. We’re committed to equal employment and development opportunities regardless of gender identity or expression, race, religion, age, sexual orientation, colour, disability, culture or place of origin.

#LI-Hybrid