> Markdown version of [/jobs/ext/1355578-software-engineer-iii-development-net-c](https://www.wearedevelopers.com/jobs/ext/1355578-software-engineer-iii-development-net-c). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer III, Development.NET-C - **Company:** Concentra, Inc. - **Location:** Addison, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** .NET Framework, Computer-Aided Design, Agile Methodology, Software Applications, Unit Testing, C Sharp (Programming Language), Static Program Analysis, Software Quality, Code Review, Data Security, Database Queries, Software Debugging, Software Design Documents, Web Development, Language Integrated Query, Entity Framework, Load Testing, Microsoft SQL Server, Object-Oriented Software Development, Pair Programming, Performance Tuning, Scrum Methodology, Software Architecture, Software Engineering, Systems Integration, Software Security, Git, Database Migration, Information Technology, Codebase, Restful APIs - **Published:** July 20, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17203078?backUrl=%2Fcareer%2F17203078%2FSoftware-Engineer-Iii-Development-Net-C-Texas-Addison ## About the Role Education Level: Bachelor's Degree Major: Computer Science Job-Related Experience * Minimum of 5 years of software development or technical analysis experience. * Strategic thinking and the ability to contribute to the overall technology roadmap * Ability to guide junior developers, provide constructive feedback, and share knowledge effectively. * Strong understanding of C# programming language, including object-oriented programming principles, and be able to develop, test, and maintain applications using C#. * Experience with .NET-Core and other languages to support future changes. * Familiarity with .NET framework and experience in building web applications is essential. * Hands-on experience with Entity Framework for data access in C# applications, including proficiency in LINQ queries, database migrations, and model configuration. * Demonstrated results in designing, implementing, and maintaining SQL Server databases, including writing complex queries and optimizing performance. * Experience designing, developing, and integrating RESTful APIs using C#, understanding HTTP methods, status codes, and best practices for API security and documentation. Job-Related Skills/Competencies * Concentra Core Competencies of Service Mentality, Attention to Detail, Sense of Urgency, Initiative and Flexibility * Ability to make decisions or solve problems by using logic to identify key facts, explore alternatives, and propose quality solutions * Outstanding customer service skills as well as the ability to deal with people in a manner which shows tact and professionalism * The ability to properly handle sensitive and confidential information (including HIPAA and PHI) in accordance with federal and state laws and company policies * Strong interpersonal and communication skills a must; ability to read, write, and speak in a professional manner, the ability to listen actively, and the capacity to mediate disputes effectively among team members. * Superior analytical skills, the ability to think critically, and the capacity to develop innovative solutions to complex challenges. * Effectively multi-task and adapt to changing business priorities * Ability to rapidly learn new software development technologies and environments * Superior teamwork skills * Excellent time management and organizational skills and attention to detail * Must possess a personal sense of urgency ## Description As a Software Engineer III specializing in .NET-C#, you take the lead for designing, developing, and maintaining robust software applications that meet the needs of our organization. You will work closely with cross-functional teams to gather requirements and translate them into technical specifications. Your role will involve writing clean, efficient, and scalable code while adhering to best practices in software development. Additionally, you will conduct code reviews to ensure quality standards are met and mentor junior engineers to foster their growth within the team. You will also be expected to troubleshoot and debug applications, optimizing performance and enhancing user experience through continuous improvement initiatives. Responsibilities Lead the design, code, test, and maintain software applications using .NET-C# and related code base. * Collaborate with cross-functional teams to design software solutions that meet business requirements and integrate with existing systems. * Troubleshoot and debug existing applications to enhance performance and user experience. * Implement best practices in coding standards, ensuring that the code is not only functional but also easy to read and maintain using meaningful variable names, consistent formatting, and comprehensive comments. * Review code written by peers, provide constructive feedback, ensure adherence to coding standards, and identify potential bugs or performance issues using tools for automated code analysis and participating in collaborative discussions to improve code quality. * Engage with product managers, designers, and QA teams to gather requirements, provide technical insights, and ensure alignment on project goals. * Participate in regular stand-up meetings and sprint planning sessions to discuss progress and address any blockers. * Develop, test, and maintain C# applications, ensuring code quality through unit testing and code reviews. * Identify, analyze, and resolve software defects in .NET-C# applications, using debugging tools, writing unit tests, and collaborating with QA teams to ensure high-quality deliverables While documenting issues and solutions for future reference. * Analyze existing code and identify bottlenecks, implement performance tuning techniques, and conduct load testing to ensure applications run efficiently under various conditions. * Lead in collaborative design sessions with team members to brainstorm and refine software architecture, ensuring alignment with project requirements and best practices. * Contribute to the creation of design documents and technical specifications that guide development efforts. * Provide guidance and support to junior engineers by conducting code reviews, offering constructive feedback, and sharing best practices in .NET/C# development. * Facilitate knowledge transfer through pair programming sessions and assist in troubleshooting complex issues. * Continuously integrate and deliver code changes while adhering to Agile principles. * Proficient in using Git for version control, including branching, merging, and pull requests to manage code changes effectively. ## Related Videos - [Getting to Know Your Legacy (System) with AI-Driven Software Archeology](https://www.wearedevelopers.com/videos/1437-getting-to-know-your-legacy-system-with-ai-driven-software-archeology) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Are Code Reviews Worth It? Insights from 16 Years of Review Data](https://www.wearedevelopers.com/videos/1135-are-code-reviews-worth-it-insights-from-16-years-of-review-data) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Psychological Safety in Software Engineering - Jenny-Margrethe Vej & Alexandra Hou Aldershaab](https://www.wearedevelopers.com/videos/2142-psychological-safety-in-software-engineering-jenny-margrethe-vej-alexandra-hou-aldershaab) ## Related Articles - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Quick guide: How to write a Software Developer CV](https://www.wearedevelopers.com/magazine/37-quick-guide-how-to-write-a-software-developer-cv) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)