Software Specialist (Senior API Engineer) - Lend and Protect Tribe

Software Specialist (Senior API Engineer) - Lend and Protect Tribe At ASB, our purpose is to help our customers get one step ahead. Every day, millions of interactions across lending, insurance and banking rely on the technology we build and support behind the scenes. We're looking for a Senior Software Engineer - API & Integration to join our team and help deliver the services and platforms that power key customer and business experiences. This is an opportunity to work on large-scale enterprise systems, solve complex integration challenges, and play a meaningful role in modernising technology that supports New Zealanders every day. About the Team You’ll join ASB's Credit Applications team within the Lend & Protect business area. The team is responsible for the technology that supports lending and credit decisioning across retail and business banking, along with a range of integration services and supporting platforms that connect critical systems across the organisation. The work is varied, technically challenging, and highly visible. From maintaining and enhancing core lending services through to modernising applications and integrations, you’ll be part of a team that combines enterprise scale with the autonomy and collaboration of a smaller engineering group. About the Role This role exists to design, build, support and continuously improve the APIs, integrations and backend services that underpin key lending and business processes across ASB. Success in this role means delivering reliable, scalable solutions, contributing to technical excellence, supporting operational resilience, and helping the wider team improve the way software is built and delivered. Key responsibilities include: Design, develop and maintain APIs, backend services and system integrations Support and enhance critical lending and business applications Collaborate with stakeholders to understand requirements and translate them into technical solutions Troubleshoot production issues and contribute to incident response and resolution activities Improve application performance, reliability and operational supportability Contribute to modernisation initiatives across cloud and on-premises environments Mentor engineers and promote engineering best practices, quality standards and technical excellence Lead or contribute to technical initiatives and project deliveries across the team About You You will be an experienced engineer who enjoys solving complex technical problems, working across systems, and taking ownership of outcomes. You’re equally comfortable designing solutions, writing quality code, investigating incidents, and helping others grow. You thrive in collaborative environments but can also work independently, lead initiatives, and make sound technical decisions when needed. You will bring: Strong commercial experience developing applications using C# and .NET Experience building and supporting RESTful APIs and backend services Strong understanding of microservices architecture and distributed systems Experience designing and implementing system integrations across multiple platforms Knowledge of authentication and authorisation technologies such as OAuth and JWT Strong SQL Server and database design experience Experience using Git-based version control and modern source control practices Experience working with CI/CD pipelines and deployment automation tools Strong troubleshooting and diagnostic skills, including API testing and debugging using tools such as Postman Experience working with Azure DevOps or similar delivery and release management platforms Familiarity with both cloud-based and on-premises environments Experience supporting production systems and participating in incident management activities Strong communication skills with the ability to work effectively across technical and non‑technical stakeholders Experience mentoring engineers and contributing to engineering standards and best practices A solid understanding of Agile software delivery practices Working at ASB At ASB, you’ll join a team that cares deeply about delivering great outcomes for our customers and creating an environment where our people can do their best work. We want our people to feel valued, supported and empowered to grow their careers while maintaining balance in their lives. In return, we offer: Hybrid and flexible working arrangements Five days of lifestyle leave each year Ongoing learning and professional development opportunities Access to internal career and mobility opportunities across ASB Health, wellbeing and employee assistance programmes Banking, insurance and partner discounts and benefits Generous parental leave support An inclusive, collaborative and supportive culture Opportunities to work with modern technologies and large-scale enterprise platforms The chance to learn from experienced engineers across a broad technology landscape Why Join Us This is a role for someone who enjoys balancing hands‑on engineering with technical leadership and problem solving. You’ll work on systems that directly support lending and business banking services used across New Zealand, while contributing to technology modernisation and platform improvements that have genuine business impact. You’ll join a team that values collaboration, ownership and continuous improvement. There is plenty of opportunity to broaden your technical skills, influence engineering decisions, and help shape the future direction of critical platforms. If you enjoy complex integration challenges, enterprise‑scale systems, and working with experienced engineers who support one another’s growth, you’ll feel right at home here. Apply Now If you’re an experienced software engineer looking for meaningful work, modern engineering challenges and the opportunity to make an impact at scale, we’d love to hear from you. Apply today and help us build better experiences for our customers through great technology. To serve a diverse community, we need a diverse organisation. We encourage applicants from all backgrounds who bring unique perspectives and thinking styles that add to the culture and performance of our team. #J-18808-Ljbffr