API Developer - Fintech Payments & Scalable Backend

Yabie AB; Stockholms kommun; On-site; SEK 650,000 - 900,000; Full time

Job summary

Yabie AB is seeking two API Developers to build, improve and maintain scalable APIs that power payments for merchants. You will design integrations with partners, work with gateways like Kong, and implement robust backend services using Java and Spring Boot.

The role emphasizes quality, maintainability, and collaboration with product and business teams, with a focus on modern development practices and AI-assisted tooling.

Qualifications

• 3–5+ years of professional backend/API development experience.
• Strong understanding of API design and scalable architectures.
• Experience in fintech/payments is a plus.

Responsibilities

• Develop and maintain robust REST APIs and backend services.
• Design integrations between Yabie, partners and external systems.
• Work with API gateways and tools such as Kong or similar.
• Collaborate with product and business teams to deliver reliable APIs.

Skills

REST APIs

Java

Spring Boot

PostgreSQL

MongoDB

API Gateways

Kong

Swedish

Tools

REST APIs

Job description

Yabie AB is seeking two API Developers to build, improve and maintain scalable APIs that power payments for merchants. You will design integrations with partners, work with gateways like Kong, and implement robust backend services using Java and Spring Boot.

The role emphasizes quality, maintainability, and collaboration with product and business teams, with a focus on modern development practices and AI-assisted tooling.