Principal Java Software Engineer (Payments)

About this role

Company Description

Technology is our how. And people are our why. For over two decades, we have been harnessing technology to drive meaningful change.

By combining world-class engineering, industry expertise and a people-centric mindset, we consult and partner with leading brands from various industries to create dynamic platforms and intelligent digital experiences that drive innovation and transform businesses.

From prototype to real-world impact - be part of a global shift by doing work that matters.

Job Description

As a Principal Java Software Engineer, you will be a highly skilled hands on Java developer who is equally comfortable delivering high quality Java code, solving complex problems, acting as a technical authority and participating in the architecture of a high-throughput, mission-critical payments platform. Serving as the keystone between executive stakeholders and delivery teams, you ensure technical direction aligns with commercial strategy, regulatory obligations, performance requirements and modern payments-industry standards.

Qualifications

• Highly experienced practitioner with hands-on software engineering with expert-level proficiency in Java (17+) and the Spring/Spring Boot ecosystem. Deep "under the hood" understanding of JVM tuning, memory management, and garbage collection for high-concurrency systems.
• Deep understanding of platform-specific database systems (Preferable: Oracle and PostgreSQL) and SQL. Knowledge on how to architecture schemas and tables, as well as optimising for performance while maintaining data integrity is essential.
• Deep understanding of microservices patterns and best practices.
• Demonstrated success delivering solutions on cloud and integrating with on-premises environments.
• Deep knowledge of payments principles—authorisation, clearing, settlement, chargebacks, fraud, card tokenisation, AML/KYC—and familiarity with AU schemes (NPP, BECS), ISO 8583/ISO 20022, and PCI DSS.
• Experience ar...