Senior Software Engineer - Payments Platform & AI Lead

Westpac New Zealand; Wellington; On-site; NZD 120,000 - 160,000; Full time

Job summary

Westpac New Zealand is seeking a Senior Engineer to lead backend development in Java and Spring Boot, driving scalable, secure payments-related solutions. You will mentor engineers, shape architecture, and collaborate with product and platform teams to deliver resilient, customer-centric capabilities.

The role focuses on designing and evolving payment processing front-ends, back-end services, and integrated experience layers, with hands-on coding, reviews, and continuous improvement across the

Qualifications

• At least 5+ years of professional engineering experience in Backend development in Java and Springboot.
• Experience in DevOps such as CI/CD pipelines, containerisation and deployment automation
• Proficient in unit testing, code reviews, and debugging
• Strong understanding of software architecture and design principles
• Integrates AI effectively into engineering workflows to improve quality and efficiency, demonstrates strong judgement on appropriate use, and coaches others on responsible AI practices

Responsibilities

• Design, develop, test, and maintain applications and integration solutions
• Troubleshoot and resolve technical issues promptly, and participating in afterhours support when required
• Ensure best practices in design, coding standards, performance, and security
• Create and maintain documentation throughout the SDLC to support transparency and knowledge sharing
• Implement changes aligned with design specifications and evolving business needs
• Analyse recurring issues and lead continuous improvement initiatives
• Maintain and refine support procedures to ensure resilience and minimise downtime
• Ensure compliance with governance standards

Skills

Java

Spring Boot

DevOps

CI/CD

Unit testing

Code reviews

Debugging

Architecture

AI in engineering

Tools

CI/CD pipelines

Containerisation

Deployment automation

Job description

Westpac New Zealand is seeking a Senior Engineer to lead backend development in Java and Spring Boot, driving scalable, secure payments-related solutions. You will mentor engineers, shape architecture, and collaborate with product and platform teams to deliver resilient, customer-centric capabilities.

The role focuses on designing and evolving payment processing front-ends, back-end services, and integrated experience layers, with hands-on coding, reviews, and continuous improvement across the