Senior Software Engineer – Backend (.NET, BFF, SDUI & GraphQL) - Contract
Join a leading enterprise as a Senior Backend Software Engineer to design and implement a critical Backend-for-Frontend (BFF) solution and implement Server-Driven UI (SDUI) for mobile applications. We are seeking a highly specialized contributor who is proficient in the .NET framework, GraphQL, and modern CI / CD practices. This role involves deep collaboration with a cross-functional app team in a hybrid environment. If you excel in architecting robust, scalable backend solutions, this contract is for you.
Key Responsibilities & Focus
- Design, develop, and maintain a Backend-for-Frontend (BFF) solution using the .NET framework.
- Implement and manage Server-Driven UI (SDUI) capabilities tailored for mobile applications.
- Work extensively with GraphQL (specifically Apollo GraphQL and Module Federation) to manage data and third-party service integration.
- Manage the software development lifecycle using Azure DevOps and GitHub.
- Develop and maintain robust CI / CD pipelines.
- Ensure high code quality and security through tools like SonarQube and other security practices.
- Collaborate effectively with a cross-functional application team on integrated solutions.
What You'll Bring
Platform Proficiency : Strong, proven proficiency in the .NET framework is required.SDUI / BFF Experience : Commercial experience with Server-Driven UI (SDUI) development for mobile apps and a strong background in BFF architecture / design.GraphQL Expertise : Deep expertise in working with GraphQL (Apollo GraphQL, Module Federation).DevOps & Git : Solid understanding of Git fundamentals and practical experience with CI / CD pipelines using Azure DevOps and GitHub.Code Quality : Experience using code security and quality tools like SonarQube.Beneficial Skills :Knowledge of cloud infrastructure (AWS, Azure).
Familiarity with observability (Dynatrace) and third-party services (Contentful, CommerceTools, Algolia).Experience with Hot Chocolate GraphQL server and security tools (Orca, Snyk).Experience with AI developer tools (GitHub Copilot) and mentorship / pair-programming.Location & Engagement
Location : Central Auckland, New Zealand (Hybrid)Start Date : January 2026Engagement : Initial 6 months contract with a chance of extensionApply Now
If you are a proven Senior Backend Software Engineer specializing in the .NET framework, BFF, SDUI, and GraphQL and are ready to contribute immediately, apply now or contact Amaan for more details :
At Randstad, we are passionate about providing equal employment opportunities and embracing diversity to the benefit of all. We actively encourage applications from any background.
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