C# / .Net Developer
$125kSynergyecp
C# / .NET Developer NetServices (NSI), a subsidiary of Synergy ECP, seeks a C# / .NET Developer to develop, enhance, and maintain web applications and services that support mission‑critical operations. Responsibilities Design, develop, test, and maintain application features using C#, ASP.NET, Entity Framework, and SQL Server. Modify and enhance existing application code to improve performance, functionality, and maintainability. Integrate third‑party components and APIs as needed. Participate in the full software development lifecycle, including planning, requirements analysis, implementation, testing, and deployment. Collaborate with senior developers and architects to implement technical designs and follow established patterns and standards. Write clean, scalable, and maintainable code aligned with best practices and team guidelines. Conduct unit and integration testing to validate functionality and ensure code quality. Troubleshoot and resolve technical issues, defects, and performance bottlenecks. Use Git/GitLab for source control, branching, and code collaboration. Support O & M tasks such as minor enhancements, bug fixes, and performance tuning. Participate in code reviews and apply feedback from senior engineers to improve technical proficiency. Assist with remediating code and package vulnerabilities identified through scans, with senior guidance. Qualifications Bachelor’s degree and 8 years of software engineering experience. 3–5 years of professional experience developing software using C# and the .NET framework. Experience with ASP.NET, Entity Framework, and SQL Server. Familiarity with architectural patterns and API styles (REST, RPC). Experience writing and executing unit tests and performing integration testing. Understanding of secure coding practices and willingness to follow vulnerability remediation guidance. Ability to collaborate with cross‑functional teams and translate requirements into technical tasks. Strong problem‑solving skills and ability to work independently when implementing assigned tasks. Bonus Points Experience with cloud platforms (AWS or Azure). Basic understanding of DevOps practices or exposure to CI/CD pipelines (GitLab preferred). Experience working with Object‑Relational Mappers (ORMs) such as Entity Framework. Knowledge of SQL or NoSQL database design principles. Experience with containerization tools (Docker). Familiarity with Agile/Scrum development processes. Relevant certifications in .NET development or cloud technologies. Security Clearance Requirement Must possess active TS/SCI clearance. Other Requirements U.S. Citizenship. Compensation Salary range starts at $125,000 and goes up to $155,000, with additional benefits including health, retirement, paid time off, and a comprehensive rewards package. Benefits We offer health and retirement benefits, paid time off, 10 paid holidays, flexible work options, professional development support, and a culture that values work/life balance. EEO Statement NSI/Synergy ECP is committed to providing equal employment opportunities to all qualified individuals. Employment decisions are based on merit, qualifications, and business needs. #J-18808-Ljbffr Synergyecp
- ...start-up in the government space is looking for a top notch Senior C# Developer to own full stack applications. Interested candidates must have... ...opportunity. Requirements 5 to 7 years of full stack .Net development Comfortable owning and being responsible for entire....netLong term contract
$125k
Synergyecp seeks a C# / .NET Developer to design, develop, and maintain mission-critical web applications. The role requires collaboration with senior developers, strong problem-solving skills, and an active TS/SCI clearance. The ideal candidate will have extensive experience....netFlexible hours- General Dynamics is seeking a Software Developer in Washington, DC to deliver simple solutions to complex problems. You'll develop and enhance software products for federal government clients, ensuring a top-notch user experience. The role requires a Bachelor's degree in....net
$145k - $151.26k
...Overview The C# .NET Developer will contribute to the development, enhancement, and maintenance of web applications and services that enable mission?critical operations in a federal environment. This role will work hands?on with the .NET framework and associated technologies....netTemporary workWork at officeLocal areaFlexible hours- C# / .NET Developer Hybrid (first 60 days on-site then transitions to hybrid) Clearance: Top Secret (will be processed for SCI and CI Poly after starting) Location: Washington, DC We are seeking a C# .NET Developer to join our team and support our client in Washington....net
$91.3k - $184.9k
As a .NET Developer, you will contribute to the development, enhancement, and maintenance of web applications and services that support mission... ...grow your skills under the guidance and mentorship of a Senior C#/.NET Developer. What you’ll do: Design, develop, test, and....netLive inLocal area- ...Overview Deliver simple solutions to complex problems as a SOFTWARE DEVELOPER at GDIT. Tailor cutting‑edge solutions to the unique... ...documentation skills. Preferred Skills: Development experience with .NET, C#, SQL, JavaScript, and HTML. Location On Customer Site,....netRemote work
- CaseGuard, based in Arlington, Virginia, is seeking an experienced software developer with a strong background in C#, .NET, and WPF. The successful candidate will lead technical design efforts, mentor junior engineers, and improve existing software. If you have a passion....net
$80k - $180k
Employee Navigator is seeking a mid-level to senior full-stack developer to work onsite in Bethesda, MD. This role involves planning code,... ...least 5 years of professional experience, a strong knowledge of C#, and good attention to detail. The salary range is $80,000 - $18....net- ...Bethesda, MD is seeking Sr. Software Engineers to design and develop software solutions. The role involves working independently and... ...fields and 5 years of experience. Additionally, knowledge of C#, ASP.NET MVC, HTML, and JavaScript is necessary. The position requires....netRelocation
- Cayuse Holdings, LLC is seeking a C# .NET Developer to enhance and maintain web applications for mission-critical operations. This role demands collaboration within a federal environment and requires expertise in C#, ASP.NET, and SQL Server. The ideal candidate will thrive....net
- ...scalable API-driven systems and apply AI-driven automation to improve product experiences. The role emphasizes building distributed C#/.NET applications, leveraging AWS, SQL Server, and modern observability practices while collaborating with Product, Research and Data....net
- ...professional software development experience, including 3+ years developing rich-client .NET desktop applications, with a track record of owning features from design through production. Expert-level C# and .NET (Framework and modern .NET). In-depth WPF and XAML: custom....net
- CoStar Group is seeking a Software Engineer on the Platform Development team in Arlington, VA, with in-office presence Monday through Thursday and remote on Friday. You will help expand the data platform powering CoStar’s brands, applying AI to automate workflows and improve....netWork at officeRemote workMonday to Thursday
$108k - $154k
...building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that... ...is robust, efficient, and maintainable; our primary tools are C#, .NET Framework, SQL Server, AWS. Utilize AI models to enhance....netHourly payFull timeWork at officeWork from homeMonday to Thursday- ...Deliver simple solutions to complex problems as a SOFTWARE DEVELOPER at GDIT. Here, you’ll tailor cutting-edge solutions to the unique... ...documentation skills Preferred Skills: Development experience with .Net, C#, SQL, JS, and HTML ~ Location: On Customer Site, Washington,....net
- ...Holman Enterprises in Mount Laurel Township is seeking a Developer III to work on vehicle supply chain applications. The role entails programming in C#.NET, maintaining existing systems, and mentoring junior developers. The ideal candidate will have at least 7 years of....netRemote work
- ...A technology company focused on AI is seeking a remote full-stack developer for their C#/.NET team. The ideal candidate is a mid or senior-level developer with over 5 years of C# experience. This role emphasizes high-quality solutions and offers flexible working hours.....netContract workRemote workFlexible hours
- A technology firm located in Arlington, VA is seeking a .Net Developer with over 5 years of experience. The ideal candidate should have strong skills in C# and .Net features, and the ability to solve problems and work collaboratively. This position is contract to hire,....netContract work
- ...Booz Allen Hamilton is looking for a Senior .NET Software Engineer in Arlington, Virginia. This full-stack developer role involves resolving end-to-end solutions in an... ...frameworks and Agile methodologies, have knowledge of C# and Web API, and hold a Bachelor’s degree.....netRemote work
- The Altip Group is looking for a client facing .NET, C# Developer to join their team in Columbus, Ohio. This role offers an opportunity to work with a global CMS product and requires at least 4 years of professional experience in .NET/C# and content management systems like....net
- ...person interview is required. Our client has an opening for an ASP.NET Developer (756005). This position is 12 months, with the option of an... ...Details Proficient in programming languages such as VB6, VBScript, C#, T-SQL, and PL/SQL – 5 Years experience. Experienced in ASP.NET....net
- ...company in Washington D.C. is searching for a talented Software Developer (.Net) to enhance their software solutions. The ideal candidate will... ..., and maintaining applications, showcasing expertise in C#, ASP.Net, and .Net Core. This role offers a competitive salary....netRemote jobFlexible hours
- A technology solutions company is seeking a Net Software Developer to support the Congressional Budget Office. This role involves full-stack development... ...must have 5-8 years of experience and be comfortable with C#, ASP.NET, and SQL. Public Trust clearance is required, and....netRemote jobWork at office
$103.8k - $218.1k
CACI International Inc is seeking a mid-level .NET Developer in Arlington, Virginia, to maintain and enhance critical applications for the U... ...years of software development experience including proficiency in C# and .NET, as well as React. Applicants must have an Active....net- A leading IT solutions provider is seeking a .NET Developer in Washington, DC for a 12+ month project. The ideal candidate will have 8+ years of development experience, specializing in .NET and C#, and proficiency in SQL Server. Responsibilities include developing software....netLocal area
- Veredus - DC is seeking a Senior C# Developer in Arlington, Virginia, to own full stack applications in a dynamic start-up environment. Candidates should have 5 to 7 years of .Net development experience and be comfortable with C#. This long-term contracting role requires....netLong term contractContract work
- The Hire Group is seeking a .NET Software Developer in Washington, D.C. This role involves application support and development of enterprise applications and websites using C# and SQL Server. The ideal candidate should have a B.S. or M.S. in Computer Science, 7 years of....net
$85k - $150k
...modernization of a high-impact payer application. The role requires extensive experience in software development, particularly with C#, .NET, and Angular. You'll collaborate across full-stack development and AWS migration efforts while mentoring junior engineers.....net- ...Graham Consulting is seeking an experienced Business Applications Developer to design, develop, and maintain critical applications... ...development experience, particularly with languages such as .NET and C#. Strong SQL and database system skills are essential. #J-1880....net
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