Senior Developer – Lending Platforms

About the role

BNZ is looking for a Senior Developer to join the Technology team within the Lending Platforms domain. This 12‑month fixed‑term position is based in Wellington and works in a hybrid model, supporting the stability, resilience and security of critical secured‑lending systems.

Key responsibilities

• Own and support APIs, applications and integrations that underpin BNZ's Secured Lending platforms, including third‑party SaaS services.
• Deliver reliability and operational improvements through software changes, automation, monitoring enhancements and proactive maintenance.
• Support security and platform lifecycle activities such as patching, upgrades, vulnerability remediation and risk reduction.
• Investigate production issues, perform incident triage and troubleshooting, and contribute to root‑cause analysis and long‑term remediation.
• Create and uplift operational documentation, runbooks, support procedures and production‑readiness practices to improve support outcomes and knowledge sharing.

Required profile

• Senior engineer with 6‑8+ years of experience in complex software development and enterprise application support.
• Hands‑on expertise with .NET and Java/Spring Boot applications and APIs.
• Proven experience supporting production systems and performing platform lifecycle work such as patching and upgrades.

Required skills

• .NET
• Java
• Spring Boot
• API development and integration
• SaaS integration
• Automation
• Monitoring
• Patching and upgrades
• Vulnerability remediation
• Incident triage and root‑cause analysis

What we offer

• Flexible hybrid working (minimum three days onsite, anchor days Tuesday and Thursday).
• Generous leave and wellbeing support.
• Opportunities for growth, learning and career development.