Full Stack Software Engineer – Customer & Service Platform

INTERSPORT Deutschland eG

. Develop and operate scalable backend services and web applications for customer accounts, service, and loyalty .

Posted 10/25/2026full-timeRemote • GermanyMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing scalable backend services and web applications, with a strong focus on Java or Kotlin, and proficiency in modern frontend technologies like TypeScript and JavaScript. Capable of integrating systems using event-driven architectures and managing cloud infrastructure through Infrastructure as Code.

Highest-signal resume keywords

Java DevelopmentKotlin DevelopmentAWS Cloud ServicesApache KafkaAutomated Testing

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentAPI DesignFrontend DevelopmentSQL DatabasesNoSQL DatabasesCI/CDEvent-Driven ArchitectureHTMLCSSModern Frontend Frameworks

Soft Skills

Team-OrientedIndependent Working StylePragmatic Approach

Tools & Technologies

AWSPulumiTerraformPlaywrightJestVitestJUnitTestcontainers

Industry Keywords

E-CommerceCRM SystemsCustomer Service SystemsUnified Commerce PlatformLoyalty Programs

Tech Stack

Tools & technologies

ApacheAWSCloudDynamoDBJavaJavaScriptJestJUnitKafkaKotlinNoSQLReactSQLTerraformTypeScriptVue.js

About the role

Key responsibilities & impact

Develop and operate scalable backend services and web applications for customer accounts, 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 software quality and platform stability through automated testing, code reviews, monitoring, and observability
Contribute to architectural and technology decisions and further develop shared engineering standards
Collaborate closely with Product Management, UX, Data, and other engineering teams
Take responsibility for solutions from concept through production operation
Use modern AI-assisted development tools and rigorously validate their output to ensure a high standard of quality
Develop a Unified Commerce Platform connecting 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 and experience with modern backend architectures and APIs
Good knowledge of TypeScript, JavaScript, HTML, and CSS, as well as 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 and a strong commitment to maintainable, testable, and clean code
Understanding of CI/CD, monitoring, and observability
Independent, pragmatic, and team-oriented working style
German at least at B2 level and confident English skills
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 technical freedom and genuine end-to-end responsibility
Close collaboration within a cross-functional product team
Additional benefits