Technical Consultant (Lead Engineer)

ASB Bank; Auckland; Hybrid; NZD 150,000 - 190,000; Full time

Job summary

ASB Bank is seeking an experienced Technical Consultant (Lead Engineer) to provide technical leadership across Domestic Payments engineering and ASB's Open Banking API initiatives.

You will design, implement and evolve secure external API capabilities, translate complex requirements into practical designs, and mentor engineers to ensure scalable, secure delivery aligned with ASB architecture standards.

Qualifications

• Significant software engineering experience with C#/.NET
• Experience leading solution architecture for complex integration platforms
• Knowledge of Open Banking and API security standards
• Strong Azure design and cloud delivery experience
• Understanding of authentication/authorization: OAuth 2.0, OpenID Connect, TLS

Responsibilities

• Lead design of Open Banking, external API and integration capabilities.
• Drive implementation of new integrations into ASB's external API platform.
• Translate business requirements into technical designs and delivery plans.
• Provide technical leadership across Open Banking, API security, and integration architecture.
• Design secure authentication/authorization using OAuth 2.0, OpenID Connect, mutual TLS.
• Guide API gateways, access policies and enterprise integration patterns.
• Apply Azure knowledge to scalable, reliable cloud solutions (Functions, SQL DB, Cosmos DB, Service Bus).
• Lead design governance for scalability, reliability, performance and security.
• Collaborate with InfoSec and Enterprise Architecture to align security patterns.
• Break down complex workstreams into practical components and steps.
• Mentor engineers and influence practices across teams.

Skills

C# & .NET

Solution architecture

Open Banking & API security

Azure cloud

OAuth 2.0 / OpenID Connect

API gateways & integration patterns

Security, risk & production controls

Mentoring engineers

Stakeholder management

CI/CD & Git

Distributed/event-driven architecture

Tools

Azure

ELK stack

Git

Job description

Help shape secure, scalable Open Banking capabilities at ASB.

At ASB, we're all about helping our customers get "One Step Ahead" by giving them the tools they need to manage their lives and plan for their future. Our technology underpins the New Zealand economy and plays an important part in the everyday lives of our customers.

About the role

We are looking for an experienced Technical Consultant (Lead Engineer) to provide technical leadership across our Domestic Payments engineering capability.

This is a senior, hands-on technical leadership role focused on the design, delivery and ongoing evolution of ASB's Open Banking and external API capabilities. You will lead the detailed design and implementation of new integrations into our external API platform, working with squads, stakeholders, third parties and customers to translate complex requirements into practical, secure technical solutions.

The role also requires strong Microsoft Azure knowledge. You will help ensure our solutions are scalable, reliable, secure and aligned with ASB's broader technology architecture and engineering standards. As a Lead Engineer, you will set technical direction, guide delivery through to production and mentor engineers across the squad and wider platform.

What you will do

• Lead the solution and detailed design of Open Banking, external API and integration capabilities.
• Drive the implementation of new integrations into ASB's external API platform.
• Refine business requirements with stakeholders and translate them into clear technical designs and delivery plans.
• Provide technical leadership across Open Banking, Financial-grade APIs, identity,security and integration architecture.
• Design secure authentication andauthorisation solutions using OAuth 2.0, OpenID Connect, digital certificates and mutual TLS.
• Guide the use of API gateways, access policies and enterprise integration patterns.
• Apply strong Azure knowledge to the design of scalable,reliable and secure cloud solutions, including Azure Functions, Azure SQL Database, Azure Cosmos DB and Azure Service Bus.
• Lead design governance and ensure solutions meetappropriate standards for scalability, reliability, performance, robustness and security.
• Collaborate with Information Security, EnterpriseArchitecture and other engineering teams to align security and integration patterns.
• Break down complex workstreams into practical technical components and delivery steps.
• Guide software engineering practices across C# and .NET-based services.
• Support deliverythrough to production, including control, risk, operational and security requirements.
• Represent engineering in third-party and customer meetings, technicalworkshops and Open Banking working groups.
• Mentorengineers, encourage knowledge sharing and influence technical direction beyond the immediate squad.

About you

You are an experienced technical leader who can move comfortably between architecture, detailed design and delivery. You are pragmatic, technically credible and able to explain complex designs clearly to engineers, business stakeholders, security teams and senior leaders.

You take ownership of outcomes and can guide complex programmes of work from early requirements through to production. You balance long-term architectural direction with the practical needs of delivery, controls, operational reliability and customer outcomes.

What you will bring

• Significant software engineering experience, ideally including strong C# and .NET development experience.
• Experience leading solution architecture and detailed technical design for complex integration platforms.
• Knowledge of Open Banking and Financial-grade API security standards.
• Deep understanding of OAuth 2.0, OpenID Connect, authentication andauthorisation flows.
• Experience with API gateways, access policies, digitalcertificates and mutual TLS.
• Strongintegration architecture and implementation experience.
• Experience designing and delivering solutions using Microsoft Azure and Azure PaaS services.
• Knowledge of distributed and event-driven architecture, including scalability,reliability and performance considerations.
• Experience withcontainerisation, enterprise networking, CI/CD practices and Git.
• Strong understanding of security, risk, dataprotection and production control requirements.
• Excellent stakeholder management, consultancy,communication and documentation skills.
• Experience providing technical leadership, mentoringengineers and influencing practices across multiple teams.

Ideally, you will also have

• Experience delivering Open Banking solutions within a bank or regulated financial-services organisation.
• Hands-on experience implementing Financial-grade API security frameworks.
• Strong experience with Azure-based integration and API platforms.
• Knowledge of observability and monitoring tools, including the ELK stack or similar technologies.
• Experience working within Agile engineering teams.
• An understanding of payment systems, securityexpectations and relevant regulatory requirements.

This is an opportunity to lead and influence the continued development of Open Banking at one of New Zealand's largest banks. You will work on high-impact capabilities that connect customers, third parties and banking services securely, while helping shape the engineering practices and architecture that support them.

You will have the opportunity to influence beyond your immediate squad, work with a wide range of technical and business stakeholders, and contribute to the future direction of ASB's Open Banking and Payments technology.

Working at ASB

ASB's values guide how we work with our people, customers and communities. We are committed to maintaining a safe, inclusive and supportive environment where people's individuality, ideas and goals are welcomed and valued.

If this sounds like the opportunity for you, we'd love to hear from you.

To serve a diverse community, we need a diverse organisation. We encourage applicants from allbackgrounds who bring unique perspectives and thinking styles that add to the culture andperformance of our team.