Kotlin/Java Back-end Engineer

Wypoon Technologies

Amsterdam, Netherlands

1 day ago

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Role details

Contract type

Temporary contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

5 years minimum

Working hours

Regular working hours

Languages

English

Job source

www.adzuna.nl

Tech stack

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

+20 more

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

Job 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.

Requirements

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

Benefits & conditions

Competitive Compensation: Salary tailored to your skills and experience.
Generous Time Off: 25 paid vacation days (based on a 40-hour work week).
Relocation Support: A relocation and travel budget to ease your transition.
Tax Benefits: Eligibility for the 30% ruling.
Travel Reimbursement: We’ve got your daily commute covered.
Top-Notch Equipment: A high-quality device to ensure you work efficiently.
Professional Development: Financial support for certifications, technical training, and language courses-because we value your long-term career growth.
Family: Visa sponsorship for your partner and children under 18.
Temporary Accommodation: Stay in temporary housing while we help you find your permanent home.
Comprehensive Relocation Assistance: Extensive support to help you settle in smoothly.
Community & Fun: Enjoy team events and connect with developers from around the globe!