Senior Full-Stack Developer (.Net)

About the role

Instant Finance is seeking a hands‑on Senior Full‑Stack .NET Developer to join its IT team. The role combines strong front‑end development with maintenance and enhancement of Microsoft‑based platforms, delivering reliable solutions that drive real business outcomes.

Key responsibilities

• Design, develop, and enhance software following agreed SDLC processes.
• Translate business and technical requirements into working solutions.
• Deploy applications using established change‑control and DevOps pipelines.
• Provide ongoing support, defect resolution, and implement small change requests.
• Write and maintain technical documentation, user guides, and training material.
• Participate in QA, testing, and training activities.
• Contribute to automated testing using the Playwright framework.
• Support and improve CI/CD and automated build processes.

Required profile

• 8+ years of commercial software development experience.
• Strong experience with Microsoft technologies such as .NET, C#, Azure, and SQL Server.
• Front‑end experience with Vue.js, Angular.js and/or Umbraco integration.
• Exposure to ASP.NET, Blazor and modern web frameworks.
• Experience with automated testing and Agile delivery.
• Excellent problem‑solving and analytical abilities.
• Ability to work semi‑autonomously from design through deployment.
• Fintech or regulated‑environment experience is a plus.

Required skills

• .NET
• C#
• Azure
• SQL Server
• Vue.js
• Angular.js
• Umbraco
• ASP.NET
• Blazor
• Playwright
• CI/CD
• DevOps
• Agile methodologies

What we offer

• Stable, well‑established Kiwi organisation.
• Supportive, down‑to‑earth team culture.
• Work on meaningful systems used nationwide.
• Variety across front‑end and back‑end development.
• Bonus scheme, life insurance, KiwiSaver matched up to 5%.
• Staff discounts with major retailers.