Senior .NET Backend Developer

About the role

We are looking for an experienced .NET Senior Backend Developer to design, build, and maintain high-performance digital solutions on the Optimizely platform. You will work as a skilled individual contributor within a collaborative engineering team, leveraging AI-assisted development practices to deliver scalable, cloud-native applications - while working closely with product, design, and fellow engineers to bring complex features to life. Design and implement robust, scalable backend services using C# and .NET Core (.NET 8+) . Build and maintain Optimizely CMS / Commerce / DXP solutions - including content modeling, APIs, middleware and custom integrations. Utilize AI-assisted development tools such as GitHub Copilot, Vertex Studios , Claude code assist or equivalent LLM-based tooling to improve velocity and code quality. Write clean, well-tested code and participate actively in code reviews, contributing constructive feedback to peers. Develop and maintain RESTful and GraphQL APIs consumed by front-end teams, third-party systems, and microservices. Work with cloud infrastructure on Azure; contribute to IaC practices (Terraform / Bicep). Write and maintain automated tests - unit, integration, and regression - in collaboration with QA. Troubleshoot and resolve complex technical issues across backend services and platform integrations. Participate in sprint planning, estimation, and technical discovery with cross-functional teams. Stay current on emerging technologies - including AI/ML services - and share learnings with the team.

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