Senior .NET Developer (Mobile & Web API)
Salary: $72,000 - 112,000 per year Requirements: • Bachelors Degree in Computer Science, Information Systems, or a related field, or equivalent experience plus 8+ years of software development using the .NET Framework. • Over 3 years of hands-on experience in developing APIs for mobile and/or enterprise applications. • Proficiency in backend mobile API development, including C#, XML, WebAPI, JSON, .NET 3.5 and later, .NET Core, MVC, SSL/TLS, IIS, SQL Server, and familiarity with middleware and enterprise API management tools. • Experience interfacing with back-end applications through web services like WCF or Web API, MQ, SOAP, RESTful services, and expertise in SOA design and technical implementations. • Knowledgeable in both on-premise and cloud-based PaaS/IaaS providers (e.g., Rackspace, Azure, AWS) and working with virtualized systems, including application servers, databases, and networking. • Expertise in enterprise service-oriented architecture and principles of non-relational and relational database design. • Strong understanding of mobile security protocols, analytics, and social media integrations (SDKs). • Familiarity with API gateways and OWASP security principles, OAuth, and related backend services. • Proven DevOps experience, Test Driven Development, use of mocking frameworks, dependency injection, and a willingness to contribute to test automation development. • Practical experience with Agile methodologies such as Scrum and Kanban. • Eager to learn and adopt new technologies and concepts. • Driven, curious, and ready to tackle challenging tasks. • A sense of humor and adaptability to change. Responsibilities: • Develop and maintain high-quality web APIs to support mobile and enterprise applications. • Collaborate with cross-functional teams to gather and define technical requirements. • Design and implement secure and scalable backend architecture for applications. • Interface effectively with various back-end systems and third-party services. • Conduct thorough testing and validation of applications to ensure functionality and security standards are met. • Manage deployment processes and contribute to DevOps practices. • Support project management teams in Agile environments, attending sprints and meetings as necessary. • Provide mentorship and guidance to junior developers and team members. • Stay updated with industry trends and best practices to continually improve our technologies and methodologies. Technologies: • .NET Framework • API • AWS • Azure • Backend • C# • Cloud • DevOps • IaaS • Support • JSON • Kanban • Mobile • MVC • OWASP • OAuth • PaaS • SOAP • SQL • Security • Web • XML • TDD • ASP.NET • microservices More: We are Intellisoft Technologies, located in Irving, Texas, and currently seeking a Senior Dot Net Developer with Web API expertise. This position offers a long-term opportunity with full benefits. While in-person interviews are mandatory, we are open to considering candidates who wish to work remotely after six months. Join our team in a collaborative environment where your skills will be valued and you will have the chance to take on challenging projects. last updated 5 week of 2026 Apply tot his job