Senior Kotlin/Java Developer (Barcelona)

Company Overview

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.

Project Overview

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).

Responsibilities

• Design and develop new microservices and busines...