- Leidos (Lorton, VA)
- …ahead!** The National Security Sector (NSS) has a new and exciting opportunity for a Senior Software Developer in our Cyber & Analytics Business Area (CABA). ... The Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and… more
- CACI International (Ashburn, VA)
- Senior Software Developer (Cryptology) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: ... and fluid software prototyping development environment. + Expertise in multiple software developer languages including, but not limited to: C#, Swift,… more
- Parsons Corporation (Fort Belvoir, VA)
- …got what you're looking for. **Job Description:** Parsons is looking for an amazingly talented ** Senior Software Developer ** to join our team! In this role ... + Active TS/SCI Clearance + 3+ years as a software developer + Proficient in C and...Special requirements: Must pass the Advanced Cyber Red Team senior developer aptitude test + Must be… more
- CACI International (Mclean, VA)
- Senior Software Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: ... * Opportunity: CACI is seeking a highly motivated and independent SME Software Developer to take sole responsibility for maintaining and supporting a critical… more
- ManTech (Herndon, VA)
- **ManTech** seeks a motivated, career and customer-oriented ** Senior Software Developer ** to join our team in the **DC, Maryland, and Virginia (DMV) area** . ... In this role you will develop, create, and modify general computer applications software or specialized utility programs. You will analyze user needs and develop … more
- ManTech (Herndon, VA)
- **ManTech** seeks a motivated, career and customer-oriented ** Senior Software Developer ** to join our team in **DC, Maryland, and Virginia (DMV) area** . In ... this role you will research, design, develop, and test operating systems-level software , compilers, and network distribution software . You will set operational… more
- GovCIO (Richmond, VA)
- **Overview** GovCIO is currently hiring for a Senior Software Developer to support our customer, USPS and their Logistics Tech Services Group. This position ... USD $146,000.00 /Yr. Submit a referral to this job (https://careers-govcio.icims.com/jobs/6438/ senior - software - developer /job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) **Location** _US-Remote_ **ID** _2025-6438_… more
- CACI International (Sterling, VA)
- Senior Front End Software Developer /Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: ... None Anticipated Posting End: 5/12/2026 CACI is seeking a Senior Developer to join a multidisciplined team... software development framework. **The Opportunity:** As a senior developer on this dynamic program; you… more
- ManTech (Chantilly, VA)
- **MANTECH** seeks a motivated, career and customer-oriented ** Senior ** **Full Stack Software Developer ** to join our team in **Chantilly, VA.** ... and the code base using industry best practices and industry accepted software development frameworks. + Maintaining the common software development workspace.… more
- ICF (Reston, VA)
- …100% remote work anywhere within the US We are seeking an experienced software developer who is passionate about artificial intelligence, machine learning, and ... large language models. As a software developer , you will be responsible for designing and implementing innovative solutions that address complex problems using… more