Senior .Net & REACT Full Stack Developer
Synergy ECP, Washington, DC
- Pay
- Not listed by the employer
- Work type
- Onsite
- Level
- Senior
- Area
- Software engineering
- Posted
- Jun 23, 2026
About the role
NetServices (NSI) is an IT services firm with a long-standing reputation for delivering high-quality, cost-effective solutions to drive lasting results. Now operating as a subsidiary of Synergy ECP, NSI continues to stand out in a crowded contracting landscape through its agility, strong customer focus, and commitment to retaining exceptional talent. By taking on challenging IT initiatives, we cultivate our talent and are continually evolving through our partnerships with clients. Our close-knot team of highly cleared engineers, analysts, and program managers represent some of the best talent locally available.
As a .NET/React Full Stack Developer, you will play a critical role in the development and maintenance of web applications and services. You will be responsible for designing, coding, testing, and deploying high-quality software solutions using the .NET framework and associated technologies, as well as React. Your expertise in both front-end and back-end development will be essential in creating seamless and efficient user experiences. You will collaborate closely with cross-functional teams, including designers, product managers, and other developers, to deliver robust and scalable applications.
In this role, you will engage in the full software development lifecycle, from concept and design to testing and deployment. You will be expected to write clean, maintainable, and efficient code, and to adhere to best practices and coding standards. Your ability to troubleshoot and resolve complex technical issues will be crucial in ensuring the reliability and performance of our applications. Additionally, you will participate in code reviews, provide constructive feedback, and contribute to the continuous improvement of our development processes.
What you'll do:
Experienced with ASP.NET framework, Entity Framework, SQL Server and design/ architectural patterns (e.g. APIs with Dependency Injection)
Experienced with .NET languages (e.g. C#, ADO.NET, EF)
Familiarity or experience with architecture styles/APIs (REST, RPC)
Develop and maintain web applications using React, TypeScript, JavaScript, Node.js and HTML5/CSS3
Design and implement both front-end and back-end components of the application.
Ensure the performance, quality, and responsiveness of applications.
Collaborate with cross-functional teams to define, design, and ship new features.
Write clean, scalable, and maintainable code following best practices.
Conduct thorough testing of applications, including unit, integration, and system testing.
Troubleshoot and resolve technical issues and bugs.
Participate in code reviews and provide feedback to peers.
Use Git/Gitlab for source control
What you’ll need:
Bachelor's Degree
Minimum 8 years of experience
Bonus if you have:
Experience with front-end frameworks such as React.
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Listed on Synergy ECP's Lever job board; checked 27 h ago. First seen by us 27 h ago. Being listed doesn't mean the team is actively interviewing. We found this board in a public directory and haven't yet confirmed it against the company's own careers page.