Full Stack Developer — Typescript & Java/Kotlin

About us:

Key Development is an end-to-end business software provider and integrator primarily for the German market. We are a cross-disciplinary developer team, specializing in eCommerce solutions, mobile applications and enterprise software.

Your Profile:

You are a dependable developer familiar with modern programming paradigms and cloud technologies. You are eager to develop high-quality enterprise solutions. You possess exceptional technical expertise, demonstrate a strong drive for continuous learning and experimenting with emerging technologies, and work closely with team members to foster a collaborative environment.

Your responsibilities:

Work in product teams as part of Intersport Digital GmbH, Germany
Develop backend services and performant, accessible frontend applications with modern web technologies, taking ownership from design to deployment and operation
Write clean, tested, and maintainable code
Help maintain and improve the team's infrastructure, including observability tooling
Contribute to system architecture and design discussions
Solve complex tasks and develop multi-tiered solutions
Work in an agile environment and exchange experience and knowledge with colleagues

Required education and skills:

Professional experience building and running production systems across the full stack
At least 5 to 7 years of experience
Solid knowledge of frontend fundamentals (HTML, CSS, JavaScript/TypeScript) and hands-on experience with modern frameworks like React, Preact or Vue
Solid knowledge of Java and/or Kotlin with Ktor, Spring Boot and/or similar enterprise frameworks for backend development
Working knowledge of SQL databases and basic schema design
Experience with automated testing, ideally end-to-end testing with Playwright or a similar framework
Experience with a major cloud provider (preferably AWS) and CI/CD pipelines (preferably GitLab CI)
Fluent written and spoken English

One or more of the following would be a bonus:

Familiarity with microservice architecture, self-contained systems, or Domain-Driven Design
Familiarity with server-side rendering concepts
Experience with observability tools
Experience with message brokers such as Apache Kafka or AWS SQS
Hands-on experience with Infrastructure as Code (preferably Pulumi; e.g. AWS CDK, Terraform)
Fluent written and spoken German

Our offer:

Personal and professional growth opportunities
25 days paid leave yearly
Additional health insurance
Multisport
Remote or home-office work possible
Work in a young and enthusiastic team
Career and skill development