Senior Software Engineer - 12 months contract

Westpac New Zealand Limited; Wellington; Hybrid; NZD 120,000 - 170,000; Full time

Job summary

Westpac New Zealand Limited is seeking a Senior Software Engineer for a 12-month contract in Wellington. You will lead backend delivery across payments-related platforms, mentor engineers, and collaborate with product and platform teams to ensure scalable, secure, and customer-centric solutions.

The role emphasizes design, development, testing, and documentation throughout the SDLC, with a focus on performance, reliability, and continuous improvement. On-site work in Takutai Square is required.

Qualifications

• Minimum 5+ years of backend engineering experience.
• Proven skills in Java and Spring Boot.
• Experience with DevOps, CI/CD pipelines, and deployment automation.
• Strong understanding of software architecture and design principles.

Responsibilities

• Design, develop, test, and maintain backend applications and integrations.
• Troubleshoot issues and provide after-hours support when required.
• Ensure best practices in design, coding, performance, and security.
• Create and maintain SDLC documentation for transparency.
• Lead continuous improvement and resilient operations.

Skills

Java

Spring Boot

DevOps

CI/CD

Containerisation

Unit testing

Code reviews

Debugging

Software architecture

AI integration

Tools

Jenkins

Docker

Kubernetes

Job description

## Senior Software Engineer - 12 months contractApply: Westpac on Takutai Square: Hapori Pōneke: Full time: Posted Today: End Date: October 7, 2026 (12 days left to apply): JR108023**About us**At Westpac New Zealand, our purpose is to Help New Zealanders Succeed. As a Bank and one of New Zealand's leading employers, we are passionate about helping people. We are taking action today to create a better future for the people who bank with us, work with us, invest in us or are part of our broader communities. **Mō te tūranga | About the Role** As part of WNZL’s digital transformation, you will play a senior role in delivering high-quality payments experiences for our customers. Working within a cross-functional squad, you will design, build, and evolve solutions across mobile, and web front-ends, as well as the experience and capability layers of payments processing.As a Senior Engineer, you will provide technical leadership, drive engineering best practices, and contribute to solution design and architectural decisions. You will mentor other engineers, collaborate closely with product and platform partners, and ensure the delivery of scalable, resilient, and customer-centric payments capabilities.• 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 **Nā tāu rourou | What will you bring?** We value attitude and presence as highly as technical expertise. You will also need to demonstrate exceptional influencing and communication skills, with the ability to use appropriate interpersonal styles and methods to guide individuals toward fast and effective outcomes.• 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• 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