Senior Software Engineer - Cross-Border Payment Systems

About the role

This Senior Software Engineer position sits on a core R&D platform building a high-scale global payment network. You will own the bank integration layer and lead the adoption of AI-driven engineering (agents and LLMs) into core workflows.

Key responsibilities

• Architect global connectivity: design end-to-end, high-availability integration gateways that unify diverse banking protocols into a scalable global network
• Engineer resilience: implement distributed patterns such as idempotency, circuit breakers and state machines to achieve 99.99% availability and zero-duplicate transactions at scale
• Innovate with AI: drive the use of AI-powered tools and autonomous agents to speed up development, automated testing and operational reliability
• Security and integrity: own the security architecture protecting the financial integrity of every global transaction
• Technical leadership: run design reviews, mentor junior engineers and shape the cross-border engineering culture

Required profile

• 2+ years of fintech experience in banking or payment systems
• Preferred: knowledge of ISO 20022/SWIFT and FX lifecycle orchestration (locked-in vs. real-time rates)
• Proven experience with "compliant by design" architecture
• A proactive interest in using AI agents to improve the SDLC

Required skills

• Java and Spring Boot, with a focus on concurrency and distributed systems
• Kafka, RocketMQ and MySQL optimization
• OAuth2, Mutual TLS and digital signatures