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.