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I

Full Stack Software Engineer – Customer & Service Platform

INTERSPORT Deutschland eG

. Develop and operate scalable backend services and web applications for Customer Account, Service, and Loyalty .

Posted 9/25/2026full-timeRemote • GermanyMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
ApacheAWSCloudDynamoDBJavaJavaScriptJestJUnitKafkaKotlinNoSQLReactSQLTerraformTypeScriptVue.js

About the role

Key responsibilities & impact
  • Develop and operate scalable backend services and web applications for Customer Account, Service, and Loyalty
  • Design and implement APIs, services, and integrations using Java or Kotlin
  • Integrate systems and data using event-driven architectures, including Apache Kafka
  • Develop frontend functionality with TypeScript, JavaScript, and modern web technologies as needed
  • Work with AWS and help shape infrastructure and deployments through Infrastructure as Code
  • Ensure high software quality and platform stability through automated testing, code reviews, monitoring, and observability
  • Contribute to architecture and technology decisions and continuously improve shared engineering standards
  • Collaborate closely with Product Management, UX, Data, and other Engineering teams
  • Take ownership of solutions from concept through production operations
  • Use modern AI-assisted development tools and rigorously review their output to ensure high quality
  • Develop a Unified Commerce Platform that connects online and offline channels

Requirements

What you’ll need
  • Several years of software development experience, ideally in a full-stack or backend environment
  • Excellent knowledge of Java or Kotlin
  • Experience with modern backend architectures and APIs
  • Good knowledge of TypeScript, JavaScript, HTML, and CSS
  • Experience with a modern frontend framework such as React, Preact, or Vue
  • Experience with Apache Kafka or comparable event-streaming technologies and distributed systems
  • Experience with AWS or a comparable cloud platform
  • Knowledge of SQL and NoSQL databases
  • Experience with automated testing
  • Strong commitment to maintainable, testable, and clean code
  • Understanding of CI/CD, monitoring, and observability
  • Self-directed, pragmatic, and team-oriented working style
  • German at least at B2 level
  • Proficient in English
  • Nice to have: Experience with Pulumi, Terraform, or comparable Infrastructure-as-Code technologies
  • Nice to have: Knowledge of AWS services such as Lambda, SQS, API Gateway, ECS, Cognito, or DynamoDB
  • Nice to have: Experience with Playwright, Jest, Vitest, JUnit, or Testcontainers
  • Nice to have: Knowledge of accessibility, web performance, or server-side rendering
  • Nice to have: Experience with Customer Account, CRM, Loyalty, or customer service systems
  • Nice to have: Experience in e-commerce, marketplace, or platform environments

Benefits

Comp & perks
  • Flexible working hours
  • Remote and mobile working options
  • Professional development opportunities
  • Employee discounts
  • Modern technology stack including Java/Kotlin, TypeScript, Kafka, AWS, and Infrastructure as Code
  • Significant influence over technical direction
  • Genuine end-to-end ownership
  • Close collaboration within a cross-functional product team