Java Backend Engineer – Fiat Payment Channels

We are looking for a skilled Java Backend Engineer to join our Fiat Payments team. You will be responsible for integrating and maintaining banking and card payment channels across multiple markets, building the infrastructure that connects our platform to global financial networks.

Responsibilities

Design and develop integrations with banks, card networks (Visa/Mastercard), and payment service providers

Build and maintain high-availability, high-concurrency payment processing systems

Develop core payment modules including channel routing, clearing, reconciliation, and settlement

Collaborate with cross-functional teams (product, risk, compliance) to deliver reliable payment solutions

Participate in code reviews, system design discussions, and technical troubleshooting

Continuously optimize system performance, stability, and scalability

Requirements

3–5 years of Java backend development experience

Proficiency in Spring Boot, MyBatis, and common distributed system components (Redis, MQ, etc.)

Experience integrating with third-party payment channels, banking APIs, or card payment systems

Understanding of payment flows: authorization, clearing, settlement, reconciliation

Fluency in English is required to be able to coordinate with overseas partners and stakeholders. Additional languages would be an advantage.

Experience at fintech platforms is a strong plus

Experience with high-concurrency, high-availability distributed system design

Nice to Have

Experience with Visa/Mastercard acquiring or card issuing systems

Knowledge of PCI-DSS or financial compliance standards

Crypto industry background