Senior Technical Architect (Payments, Cards, Java, REST API, Microservices) )

EXASOFT PTE. LTD.; Singapore; On-site; SGD 80,000 - 100,000; Full time

Job summary

A leading technology firm in Singapore seeks a seasoned professional to lead the architecture and design of Payments and Card Processing platforms. The ideal candidate should have over 10 years of IT experience, with at least 8 years in the Payments domain, along with in-depth knowledge of regulatory compliance and system integration. This is a key role requiring expertise in technical decisions, scalability, and collaborations across teams. The company values compliance and security standards, aiming for a resilient payment system.

Qualifications

• 10+ years in IT with 8+ in Payments or Cards domain.
• 9-10 years of experience in card processing methodologies.
• Deep understanding of ISO 8583 and EMV standards.

Responsibilities

• Lead architecture for Payments and Card Processing platforms.
• Define solution architecture for payment systems.
• Drive technical decisions for card network integration.

Skills

Payments domain expertise

Java/J2EE proficiency

Microservices architecture

REST APIs

Event-driven systems

Cloud platforms (AWS/Azure/GCP)

Containerization (Docker, Kubernetes)

PCI-DSS compliance knowledge

Fraud systems knowledge

Job description

Responsibilities:

• Lead the architecture and design of end-to-end Payments and Card Processing platforms (issuing, acquiring, switching).
• Define and govern solution architecture for high-volume, low-latency, and highly available payment systems.
• Drive technical decisions for card networks integration (Visa, MasterCard, Amex, RuPay) and payment gateways.
• Ensure compliance with PCI-DSS, regulatory, and security standards.
• Collaborate with business, product, and delivery teams to translate requirements into scalable technical solutions.
• Mentor technical leads and development teams on architecture best practices.
• Review system designs, code quality, performance, and security aspects.
• Manage integration with external systems such as core banking, fraud, risk, settlement, and reconciliation.
• Support production systems with root-cause analysis and performance optimization.

Requirements:

• 10 years of overall IT experience with 8+ years in Payments / Cards domain.
• 9-10 years of experience in card issuing, acquiring, authorization, clearing & settlement.
• Deep knowledge of ISO 8583, EMV, 3-D Secure, tokenization, and fraud systems.
• Expertise in Java/J2EE, microservices architecture, REST APIs, and event-driven systems.
• Experience with high-throughput systems, scalability, resiliency, and fault tolerance.
• Strong understanding of PCI-DSS, security standards, and encryption/key management.
• Experience with cloud platforms (AWS/Azure/GCP) and containerization (Docker, Kubernetes).