Senior Kotlin/Java Backend Engineer – Fintech Platform

Scalable GmbH; Belgique; On-site; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Relocation support

Work from abroad

Competitive compensation package

Company pension scheme

Education budget

German language classes

Deutschland Jobticket (50% monthly)

PRIME+ Broker subscription

Urban Sports Club

Job summary

Scalable Capital is building a brand-new banking platform and seeks experienced backend developers to join autonomous, cross-functional teams building clearing and settlement services with Kotlin, Java and Spring Boot. You will operate cloud-native apps on AWS (ECS, Lambda), apply infrastructure as code, CI/CD, observability, and own features end-to-end with a focus on reliability and security.

The role includes international relocation support and a generous compensation package with extensive

Qualifications

• University degree in computer science, engineering or a related field.
• Strong backend experience with Kotlin or Java and Spring Boot.
• Solid understanding of Domain-Driven Design and translating complex processes into software models.
• Experience designing and operating distributed, event-driven systems and APIs.
• Familiarity with cloud-native development on AWS, especially containerised and serverless workloads.
• Confidence with automated testing, CI/CD, infrastructure as code and production observability.
• Quality and security mindset with reliability and operational ownership.

Responsibilities

• Build and evolve backend services using Kotlin/Java and Spring Boot.
• Work in autonomous, cross-functional teams using agile practices and DDD.
• Develop and operate cloud-native applications on AWS (ECS, Lambda).
• Shape reliable delivery with infrastructure as code, CI/CD pipelines, observability and monitoring.
• Write clean, secure, well-tested and maintainable code.
• Take ownership from idea to production, delivering measurable value while ensuring compliant financial workflows.
• Raise the team’s engineering standards by improving quality and developer experience.

Skills

Kotlin/Java backend

Spring Boot

Domain-Driven Design

AWS (ECS/Lambda)

CI/CD

Education

Bachelor's degree in CS/Engineering or related

Tools

AWS

ECS

Lambda

CI/CD pipelines

Infrastructure as Code

Job description

Scalable Capital is building a brand-new banking platform and seeks experienced backend developers to join autonomous, cross-functional teams building clearing and settlement services with Kotlin, Java and Spring Boot. You will operate cloud-native apps on AWS (ECS, Lambda), apply infrastructure as code, CI/CD, observability, and own features end-to-end with a focus on reliability and security.

The role includes international relocation support and a generous compensation package with extensive