Senior .Net Full Stack Developer

Company: Synergy ECP
Location: Chantilly
Posted on: April 1, 2026

Job Description:

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. Description: As a .NET 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. 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. Onsite requirement is 5 days per week to start, then a gradual transition to 3 to 4 days onsite. Qualifications: - Bachelor's Degree - Minimum 8 years experience *React is a must have Responsibilities: - Experienced with ASP.NET framework, SQL Server and design/ architectural patterns (e.g. Model-View-Controller (MVC) - Experienced with .NET languages (e.g. C#, Visual Basic .NET) and HTML5/CSS3 - Familiarity or experience with architecture styles/APIs (REST, RPC) - Develop and maintain web applications using the .NET framework and related technologies. - 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. Preferred Skills: - Experience with front-end frameworks such as React, or Vue.js . - Familiarity with cloud platforms like Azure. - Knowledge of database design and development, including SQL and NoSQL databases. - Understanding of DevOps practices and tools, such as CI/CD pipelines, Docker, and Kubernetes. - Relevant certifications in .NET development or cloud technologies. - Experience working in an Agile/Scrum development environment. - Strong problem-solving skills and attention to detail. - Excellent communication and collaboration skills. Security Clearance requirement: Must possess active TS/SCI clearance to be considered for this role. Other Requirements: U.S. Citizenship Compensation Spotlight: For this role, our typical salary range starts at $110,000 and stretches up to $140,000. But here's the deal – we're not about capping your potential. We're committed to snapping up the best and brightest, and we're ready to put our money where our mouth is. So, if you're one of the rare exceptions to the status quo with the education, experience, and that extra something special, we're not afraid to go above and beyond to secure your talent. Because for us, it's not just about a salary. It's about the complete rewards package, the culture, and the opportunity to make a real impact. Taking Care of the People Who Take Care of The Nation Compensation : We offer highly competitive compensation that is consistently recognized by our employees as being generous! Health & Retirement : We offer a comprehensive Health Benefits package and 401K Retirement plan so you can take care of yourself and your family both now and in the future. Other health-related benefits include People Partners who will help you navigate both personal and professional worlds, as well as strong wellness related resources offered through our healthcare provider. Education : Individual growth is a priority at NSI/Synergy ECP. Employees are encouraged to take advantage of our company-sponsored continuing education program so they can get their degree or that next certification needed to propel them towards the next level. Not sure what's best for your career plans, we'll help you navigate it all! Work/Life Balance : A healthy work/life balance is essential for building and executing your work effectively at NSI/Synergy ECP, but it’s also necessary to allow you the room to pursue everything you want to develop in your personal life. We offer a generous Paid Time Off benefit and 10 paid holidays a year. NSI/Synergy ECP also provides flexible work options that work with your schedule and lifestyle. Philanthropy: With the help of our amazing employees, NSI/Synergy ECP participates annually in building awareness, volunteering and contributing to dozens of organizations. We believe that giving back creates a sense of purpose, engagement, and fulfillment. Have a cause you are passionate about? We bet you'll find others here that care about it just as much! NSI/Synergy ECP is committed to providing equal employment opportunities to all qualified individuals. Employment decisions are based on merit, qualifications, and business needs. We do not discriminate on the basis of race, color, sex, national origin, religion, age, disability, or any other status protected by applicable law.

Keywords: Synergy ECP, Bowie , Senior .Net Full Stack Developer, IT / Software / Systems , Chantilly, Maryland