Senior Software Engineer - Backend Contractor

Westpac; New Zealand; On-site; NZD 165,000 - 248,000; Full time

Job summary

Westpac New Zealand is seeking a Senior Software Engineer - Backend Contractor to design, build, and replace a critical legacy system with modern tech. You’ll work in Product Engineering – Cards and Consumer Finance, delivering scalable backend services using Java, Spring Boot, Kafka, and IBM MQ.

You’ll own API and backend development, implement CI/CD pipelines, containerisation, and deployment automation, and apply AI-enabled design approaches.

Qualifications

• At least 10 years’ experience in API and backend development.
• Proficiency with server-side development (Java, Spring Boot, Kafka, IBM MQ).
• Experience in DevOps such as CI/CD pipelines, containerisation, and deployment automation.
• Experience using AI for design and development.
• Strong knowledge of database schema design, transactions, and queries.
• Exceptional influencing and communication skills, with the ability to guide individuals toward fast and effective outcomes.
• Strong problem-solving skills using systems thinking and analytical approaches.

Responsibilities

• Design, develop, test, and maintain applications and integration solutions.
• Troubleshoot and resolve technical issues, ensuring system stability.
• 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.
• Contribute to release and deployment processes, ensuring accurate documentation and compliance.
• Implement automated testing and ensure high-quality code through code reviews and continuous integration practices.

Skills

API and Backend development

Java

Spring Boot

Kafka

IBM MQ

CI/CD pipelines

Containerisation

Deployment automation

AI for design and development

Database design and queries

Systems thinking and analytical

Tools

CI/CD pipelines

Containerisation

SQL databases

NoSQL databases

Job description

Senior Software Engineer - Backend Contractor

Company : Westpac Job Type : Full Time New Zealand

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.

Mōp te tūnanga | About the Role

Join Westpac NZ as a Senior Backend Developer in our Product Engineering – Cards and Consumer Finance team. You’ll play a key role in designing, developing, and maintaining scalable applications using backend technologies. You’ll replace a critical legacy system with modern tech stack starting from scratch.

Ko tō mahi | What you’ll do

• Design, develop, test, and maintain applications and integration solutions.
• Troubleshoot and resolve technical issues, ensuring system stability.
• 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.
• Contribute to release and deployment processes, ensuring accurate documentation and compliance.
• Implement automated testing and ensure high-quality code through code reviews and continuous integration practices.

Nā tō rourou | What will you bring?

• At least 10+ years’ experience across API and Backend development
• Proficiency with server-side development (Java, Spring Boot, Kafka, IBM MQ).
• Experience in DevOps such as CI/CD pipelines, containerisation, and deployment automation.
• Experience using AI for design and development.
• Strong knowledge of database schema design, transactions, and queries.
• Exceptional influencing and communication skills, with the ability to guide individuals toward fast and effective outcomes.
• Strong problem-solving skills using systems thinking and analytical approaches.