Senior API Developer — Core Ledger Transformation

Bank of New Zealand; Auckland; On-site; NZD 130,000 - 190,000; Part time

Benefits offered by this job

Wellbeing program

Flexible working

Generous leave

Job summary

Bank of New Zealand (BNZ) in Auckland is seeking experienced Senior API Developers to join the Core Ledger Replacement program. You will lead the delivery of complex features and scalable technical solutions within an agile environment, balancing speed, quality, and strategic alignment.

As a senior member, you will provide technical mentorship, influence direction, and own large-scale platforms from design through deployment.

Qualifications

• Proven experience delivering complex features and platforms.
• Strong engineering knowledge and architectural judgment.
• Experience leading cross-functional teams and mentoring others.

Responsibilities

• Deliver Outcomes: Lead the delivery of complex features, systems, or technical initiatives, balancing speed, quality, and alignment with strategic goals.
• Take responsibility for on-call participation and production support within your domain.
• Demonstrate Technical Excellence: design and build robust, scalable systems with long-term sustainability.
• Collaborate and Influence: build relationships across disciplines and influence technical direction.
• Grow Self and Others: provide technical mentorship and coaching, feedback, and knowledge sharing.

Skills

Java

Spring Boot

REST APIs

Technical leadership

System design

Job description

Bank of New Zealand (BNZ) in Auckland is seeking experienced Senior API Developers to join the Core Ledger Replacement program. You will lead the delivery of complex features and scalable technical solutions within an agile environment, balancing speed, quality, and strategic alignment.

As a senior member, you will provide technical mentorship, influence direction, and own large-scale platforms from design through deployment.