Senior Mobile Engineer - 6 months contract iOS or Android

Westpac New Zealand Ltd; Auckland; On-site; NZD 120,000 - 180,000; Full time

Job summary

Westpac New Zealand Ltd in Auckland is seeking a senior mobile engineer to deliver production mobile solutions end-to-end, from shaping approach to testing, release and operational support.

You will design, develop, test and maintain apps for iOS or Android, drive CI/CD, mentor peers, and champion code quality, security and scalable architectures, while integrating AI responsibly.

Qualifications

• 5+ years of professional mobile app development experience.
• Experience in iOS or Android development and cross-platform approaches.
• Strong knowledge of DevOps practices and CI/CD pipelines.

Responsibilities

• Design, develop, test, and maintain mobile applications and integration solutions.
• Troubleshoot issues and provide after-hours support when required.
• Ensure best practices in design, coding standards, performance and security.
• Collaborate with project teams from concept through delivery to meet requirements.
• Provide technical guidance and mentorship to junior developers and peers.
• Create and maintain documentation throughout the SDLC to support transparency.
• Implement automated testing and CI/CD processes for reliable deployments.
• Lead continuous improvement to enhance system performance and reliability.
• Support release and deployment processes with proper documentation and governance.

Skills

Mobile app development

iOS development

Android development

DevOps

CI/CD

Unit testing

Code reviews

Mentorship

Software architecture

AI integration

Tools

CI/CD pipelines

Docker / containerisation

Job description

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.

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.

Our culture is rich with stories of how our people like to help, our customers, our community and each other. This is reflected through flexible working arrangements to ensure that our people have a balance in their life with those things that are important to them.

Through ensuring that we provide opportunities to everyone regardless of what society throws at them, we are a safe place to work where you are treated equally and appreciated.