Senior Lead Full Stack Developer (Entra ID/API)

At Sparq , we help companies solve the right problems—not just build more technology. We’re a modern product engineering partner blending strategy, craftsmanship, and speed to help organizations modernize confidently in the age of AI.

From data ecosystems to digital products and AI acceleration, we turn complexity into clarity and ideas into impact. If you’re driven to build what’s next, lead with empathy, and deliver excellence without ego, you’ll feel right at home at Sparq .

Why you will enjoy Mondays again: Opportunity to work alongside a talented, diverse team in a collaborative and creative environment Ongoing investment in your growth through training, mentorship, and industry certifications Hands-on exposure to cutting-edge technologies across multiple industries Recognition programs and employee awards within an inclusive culture that celebrates great work, including our AI Innovators Program Remote or hybrid work options A Day in the Life: Design, build, and maintain secure backend APIs using C#, .

NET Core/. NET 6+, and ASP. NET Core, with a focus on authentication, authorization, and secure service communication. Implement and support Entra ID/Azure AD authentication flows, including OAuth, JWT, managed identities, and token-based access patterns across backend services and web applications.

Help modernize existing systems by supporting migration efforts to Entra ID and Azure-based identity solutions, while identifying opportunities to improve API security and application architecture.

Partner closely with senior architects and engineering teams to align development work with established security standards, cloud architecture patterns, and Azure best practices.

Actively use AI tools, including Claude through our Anthropic partnership, to streamline tasks, improve the quality of your work, and share best practices with teammates while continuously seeking new ways to integrate AI into your everyday workflows Collaborate with front-end developers using Vue. js