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# Kotlin/Java Back-end Engineer

- **Company:** Wypoon Technologies
- **Location:** Amsterdam, Netherlands
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Databases, Distributed Systems, Junit, PostgreSQL, Enterprise Messaging Systems, RabbitMQ, Secure Coding, Software Engineering, Spring-boot, Kotlin, Event Driven Architecture, Git Flow, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Code Testing, Cassandra, Bicep, Apache Kafka, Codebase, Graphql, Api Design, Terraform, Docker, Microservices
- **Published:** August 15, 2026
- **Apply:** https://www.adzuna.nl/details/5843278045

## About the Role

* A minimum of 5 years of professional experience.
 * Advanced proficiency in the English Language (at least B2 in speaking, writing, listening, and reading).
 * A minimum of a bachelor's degree in computer science, Software Engineering, or a related field.
 * Solid background in Java, comfortable working in mixed Kotlin/Java codebases.
 * Strong experience with Spring Boot (Kotlin DSL) or Kotlin-first frameworks like Ktor.
 * Experience designing and scaling microservices, with a focus on performance and maintainability.
 * Strong experience with distributed systems and event-driven architectures, ideally in high-traffic or mission-critical environments where scalability and reliability are essential.
 * Familiarity with messaging systems (Kafka, RabbitMQ) and databases (Cassandra, PostgreSQL).
 * Proficiency in API design patterns (REST, GraphQL) and secure coding.
 * Hands-on knowledge of Docker, Kubernetes, and cloud platforms (AWS, Azure, or GCP).
 * Experience with CI/CD pipelines and Git-based workflows.
 * Agile mindset

## Description

* Develop scalable back-end services in Kotlin, using frameworks like Ktor or Spring Boot (Kotlin DSL).
 * Design, build, and maintain event-driven microservices and APIs (REST or GraphQL).
 * Write clean, maintainable, and well-tested code, applying TDD/BDD principles with tools like JUnit or MockK.
 * Contribute to distributed architectures using Kafka, Cassandra, or similar technologies.
 * Define infrastructure using Infrastructure-as-Code tools like Terraform or Bicep.
 * Collaborate in Agile DevOps teams to ship and run production-ready software.
 * Participate in code reviews, architecture discussions, and documentation writing.


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