Senior Kotlin/Java Developer (Fintech) – remote friendly (EMEA)

SMARTCORE AG

📍 Barcelona, Catalonia, Spain

Full-time Other-General Posted March 01, 2026

Job Description

About the Company:SmartCore is a fintech holding building infrastructure for the next generation of payments. Our solutions cover the entire financial operations cycle — from core banking and processing to cards, wallets, and anti-fraud systems.

We are a leading fintech company developing innovative solutions in payment processing and anti-fraud technologies. We create high-tech products that are reshaping the financial landscape and are looking for true professionals ready to tackle complex and ambitious challenges.

About the Project:You'll join a key team responsible for developing and evolving our core acquiring platform — a complex, high-load, microservices-based system operating 24/7. We handle the entire payment lifecycle, from initiation to clearing, ensuring minimal latency, high fault tolerance, and full compliance with strict security standards (PCI DSS).

What You'll Do:Design and develop new microservices and business logic using Kotlin and Java.Optim...