Senior Mobile Engineer - 6 months contract iOS or Android

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

Westpac is transforming its mobile experience for customers. This role is responsible for end-to-end delivery of production mobile solutions - from shaping technical approach and implementation through to testing, release and operational support - while championing code quality, security and sustainable reduction of technical debt.

• Design, develop, test, and maintain applications and integration solutions.

• Troubleshoot and resolve technical issues promptly, ensuring system stability and participating in after-hours support when required.

• Ensure best practice in design, coding standards, performance and security.

• Collaborate with project teams from concept through delivery to ensure solutions meet business and technical requirements.

• Provide technical guidance and mentorship to junior developers and peers.

• Create and maintain documentation throughout the Software Development Lifecycle (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 to enhance system performance and reliability.

• Maintain and refine support procedures to ensure resilience and minimize downtime.

• Contribute to release and deployment processes, ensuring accurate documentation and compliance with governance standards.

• Implement automated testing and ensure high-quality code through code reviews and continuous integration practices.

Nā tāu rourou | What will you bring?

• At least 5+ years of professional engineering experience in iOS or Android mobile app development.

• 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.