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Sperton Global AS

Senior Java Developer

Sperton Global AS Stockholm Municipality, Sweden

Staffing and Recruiting · 51-200 employees

2 d ago Closes in 2d
java Senior (5-10 yrs) Contractor Sweden
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About the role

Develop and maintain scalable microservices for a fund trading platform using Java 21 and Spring Boot. Integrate event-driven architectures with Kafka and ensure code quality through comprehensive automated testing and CI/CD pipelines.

What they look for

Java 21 Spring Boot Microservices REST APIs Apache Kafka Microsoft SQL JUnit Cucumber Test Automation CI/CD Object-Oriented Design Design Patterns Debugging Problem-solving

Requirements

Requires strong proficiency in Java, Spring Boot, and microservices architecture with experience in REST APIs and Kafka. Candidates should have a solid understanding of OOP, design patterns, and automated testing frameworks like JUnit and Cucumber.

Full description

Location-Stockholm (SE)

Remote-25% (Hours per week - 40 )

Assignment period -16 Oct 2026 -09 Jan 2027

Deadline - 08 Oct 2026

Senior Java Developer – Fund Trading Platform | Stockholm

We are looking for a Senior Java Developer to join a business-critical Fund Trading Platform team working on a modern solution for mutual fund order processing across the Nordic market.

Key Responsibilities

  • Develop scalable microservices using Java 21 & Spring Boot
  • Build and integrate REST APIs and Kafka-based event flows
  • Work with Microsoft SQL and data integrity
  • Write clean, maintainable and testable code using OOP, SOLID principles and design patterns
  • Develop automated unit, integration, API, regression and functional tests
  • Work with JUnit, Cucumber and test automation frameworks
  • Integrate automated testing into CI/CD pipelines
  • Perform API, Kafka, database and UI validation
  • Troubleshoot defects and collaborate with Developers, DevOps and Product teams
  • Contribute to continuous improvement and test automation

Required Skills

  • Java 21
  • Spring Boot & Microservices
  • REST APIs
  • Apache Kafka
  • Microsoft SQL
  • JUnit & Cucumber
  • Test Automation
  • CI/CD
  • Object-Oriented Design & Design Patterns
  • Strong debugging and problem-solving skills

Nice to Have: React, JavaScript/TypeScript, Selenium/Playwright/Cypress, Docker/Kubernetes, JPA/Hibernate, financial services or trading domain experience.

About Sperton

Sperton is an international recruitment and consulting firm that helps organizations find and attract qualified specialists and leaders in sectors such as infrastructure, technology, energy, and industry.

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