Senior Software Engineer – Payments Platform (AI & Java)

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 for payments-related experiences, designing, building, and evolving server-side solutions in Java and Spring Boot within a cross-functional squad. You will mentor engineers, promote DevOps practices, and ensure scalable, secure, and resilient software.

Strong communication and architecture skills are essential. This role offers customer-focused, impactful work across mobile and web front-ends integration layers and

Qualifications

• 5+ years of professional engineering experience in Backend development in Java/Springboot.
• Experience in DevOps such as CI/CD pipelines, containerisation and deployment automation
• Proficient in unit testing, code reviews, and debugging
• Ability to break down complex problems and deliver practical solutions
• 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

Backend development

Java

Springboot

DevOps

CI/CD

AI integration

Job description

Westpac New Zealand is seeking a Senior Engineer to lead backend development for payments-related experiences, designing, building, and evolving server-side solutions in Java and Spring Boot within a cross-functional squad. You will mentor engineers, promote DevOps practices, and ensure scalable, secure, and resilient software.

Strong communication and architecture skills are essential. This role offers customer-focused, impactful work across mobile and web front-ends integration layers and