Senior Developer at BNZ

BNZ; Wellington; On-site; NZD 120,000 - 150,000; Full time

Benefits offered by this job

Flexible working

Generous leave

Hybrid work model

Career growth opportunities

Job summary

BNZ is seeking a Senior Developer for a 12-month fixed-term role based in Wellington. The position is hybrid with three days in office and two remote days, anchored on Tuesdays and Thursdays.

You will contribute to lending platform integrations, support ongoing modernisation, and ensure safe, reliable systems across BNZ. The ideal candidate has strong Java, Spring Boot and .Net experience, 7+ years in complex environments, and a passion for high-quality engineering practices in a dynamic banking

Qualifications

• 7+ years' experience in complex environments.
• Hands-on with Java, Spring Boot and .Net.
• Experience with API integration patterns and security fundamentals.
• Proficient with CI/CD tools and monitoring/observability.

Responsibilities

• Develop new features and support business-as-usual activities, including designing, coding, and implementing new functionality.
• Provide production support by monitoring, troubleshooting, and resolving issues in live environments.
• Mentor and support fellow developers and testers through coaching and collaboration.
• Participate in agile ceremonies and continuous improvement activities.
• Contribute to quality assurance through code reviews and peer collaboration.

Job description

This Full time on site position offers great opportunities for career growth. Worker Type: Maximum Term/Fixed Term (Fixed Term) Here at BNZ, it's about more than just banking. We work together in an agile, energising environment to create innovative solutions though our promise "If you can imagine a better future, let's find a way." We support wellbeing, flexible working and have a generous leave offering. No two days are the same. Ko mātou tēnei | This is Us The successful candidate will join BNZ's Technology team within the Lending Platforms domain, working across the platforms and integration services that support lending application processing and decisioning for both personal and business customers. This business unit is responsible for the technology that underpins key lending origination experiences and services for BNZ customers. This is a fantastic opportunity for a Senior Developer to directly contribute to BNZ's growth in key lending product segments, while continuing to support existing systems through to decommissioning. As the team's existing platforms continue through modernisation and retirement, the team plays an important role in ensuring they remain safe, reliable, compliant, and well supported. The role also offers the opportunity to help lead new work as the team transitions to building integrations with BNZ's banking platforms.

Mō te Tūranga | About the Role

We sat down with the People Leader (who you'll report to), and they told us the following about the role: This is a 12-month fixed-term role based in Wellington. It is a hybrid role, with three days in the office and two days working flexibly. Anchor days in the office are Tuesday and Thursday.

What are 5 day to day tasks the person in this role will complete?

• Develop new features and support business-as-usual activities, including designing, coding, implementing new functionality, and enhancing existing application capabilities.
• Contribute to quality assurance through code reviews and peer collaboration, sharing constructive feedback and working closely with the team to uphold high coding standards and deliver robust, maintainable solutions.
• Provide production support including applications by monitoring, troubleshooting, and resolving issues in live environments to ensure reliability, performance, and positive user experiences.
• Mentor and support fellow developers and testers by sharing knowledge, offering guidance, and helping team members grow their technical skills and confidence through coaching and collaboration.
• Participate in agile ceremonies and continuous improvement activities, including daily stand-ups, sprint planning, and retrospectives, while actively contributing ideas to improve team processes and foster collaboration.

What technical skills and attributes would be advantageous in this role?

• Strong experience in both software development and enterprise application support, ideally with 7+ years' experience in complex environments.
• Hands-on capability with Java, Spring Boot and .Net Experience in operational and platform lifecycle work, including patching, upgrades, vulnerability remediation, and production support.
• Solid understanding of distributed systems, API integration patterns, and security fundamentals such as API gateways, mTLS, JWT, and secure service communication.
• Experience with CI/CD tooling such as Jenkins, Spinnaker, and Docker, along with monitoring and observability tools like Splunk and Dynatrace.
• Hands-on experience deploying containerised applications to managed orchestration platforms such as EKS, ECS, or OpenShift.
• Experience with AI-assisted development workflows and agentic tooling as part of day-to-day engineering practice.

What is the most exciting thing about this opportunity?

This team is positioned to play a key role in BNZ's growth across important product categories. The successful candidate will join an established team responsible for integrating with both new and existing banking platforms across BNZ.

What attributes will this person display to be successful in this role?

Proactive, dependable, and comfortable taking ownership of critical systems and outcomes. Able to lift engineering quality across the team by setting high standards and bringing others along through mentorship and practical example. Calm and methodical in production support, with the ability to work through complex issues while balancing immediate response with longer‑term improvement. Collaborative and communicative, with the ability to build strong working relationships across engineering, delivery, risk, vendor, and business stakeholders. Curious, pragmatic, and focused on continuous improvement, with a commitment to leaving systems in a better state through disciplined operational practice, thoughtful engineering, and strong follow‑through.

What is the team culture and environment like?

Our team culture is highly collaborative. We believe in delivering as a team and supporting one another to achieve shared goals. We encourage continuous learning and growth, creating opportunities for people to develop their skills and progress in their careers. As an agile team, we are always looking for ways to improve our processes and outcomes, embracing feedback and change as part of our DNA. We value open communication, inclusivity, and the unique perspectives each team member brings, creating an empowering and supportive environment where everyone can do their best work.

Nau Mai ki te Pēke o Aotearoa | Come to the Bank of New Zealand

We review applications as they are received and may close advertising early. Ehara taku toa i te toa takitahi, ... Success is not the work of an individual, but the work of many.

Closing Date: 20 August 2026

A pplications will be reviewed regularly across the advertising period, but we do reserve the right to close applications early.