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Interface Developer Security Clearance
Job in
Springfield, Fairfax County, Virginia, 22161, USA
Listed on 2026-06-03
Listing for:
Cornerstone Defense
Full Time
position Listed on 2026-06-03
Job specializations:
-
Software Development
Software Engineer, C# / Unity Developer
Job Description & How to Apply Below
Overview
Interface Developer — Springfield, VA. Active TS/SCI with CI Polygraph. Cornerstone is seeking highly motivated developers to build and implement functional software solutions in a fast-paced, agile environment, including peer review sessions, adaptability to changing requirements, and a willingness to learn new technologies. The ideal candidate is a self-starter with strong problem-solving, written and verbal communication skills, and a curiosity for new challenges.
Responsibilities- Collaborate with software architects and developers.
- Collaborate with project managers, analysts, and customers in the analysis, design, creation, and maintenance of integration solutions.
- Produce code to enable easy maintenance and extension of software products.
- Integrate software components and third-party programs.
- Demonstrate development skills utilizing ASP.NET, .NET Core, .NET Framework, C#, and JavaScript/JQuery.
- Troubleshoot, debug, and upgrade existing software.
- Perform validation and verification testing prior to deploying implementations.
- Recommend and execute improvements.
- Create technical documentation for reference and reporting.
- 5+ years of experience in software development, infrastructure development, or related field.
- Working understanding of SQL, SSL Certificates, and Single Sign-On configurations.
- Understanding of the ASP.NET application lifecycle from IIS to the DOM.
- Create and consume REST and SOAP web services.
- Experience with Windows environments and Visual Studio.
- Experience with .NET, SaaS.
- Experience with Scrum/Agile methodologies.
- Strong verbal and written communication skills.
- Able to multitask and manage time efficiently.
- Ability to work independently and in a team.
- Medical, Dental and Vision plans
- Generous PTO policy
- 401(k)
- HSA and FSA options
- Life and Disability Insurance
- Tuition Reimbursement and Training
- Perks at Work Discount Program
- Referral Program
- Leads Generation Program
- College America 529
- Fitness Reimbursement Program
- Travel Assistance
- Norton Life Lock Benefit Solutions
- Life Planning Financial & Legal Services
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