Software developer jobs in Manassas, VA and nearby

Software developer jobs within 25 miles of Manassas, VA. Nearby towns and cities are included. Distances are straight-line, not driving distances.

Counted Nov 2, 2026

Hiring at a glance

View jobs

Open jobs: 442
Employers: 167

Advertised starting pay

Average starting payUSD / year: $116,648Across 57 listings

Employer-advertised starting pay, not employee salaries. Currencies and pay periods stay separate.

Where work happens

Remote: 0%0 listings
Hybrid: 2%7 listings
On-site: 21%92 listings

Not specified: 78% (343 listings)

Employers hiring include LEIDOS, INC. (21), CACI International (20), Booz Allen Hamilton_United States (18).

Sources & calculation notes

These figures describe the listings on this role page at the date shown, not the whole job market. Listings can change.

Employer-listed minimums from at least 10 listings per currency and pay period. These are advertised starting amounts, not employee salaries. Jobs without a minimum and unusual amounts are excluded.

Hybrid and on-site classifications may be inferred from descriptions. Check the original ad. How we count

Software developer jobs in Manassas, VA and nearby

Within 25 miles

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Added 1 hour ago
Lead Application Developer
CGI
Fairfax, VA
Join us as a Lead Application Developer and help shape the design and delivery of mission critical software solutions. In this role, you'll provide hands on technical leadership across…
Added 3 hours ago
Lead Software Developer - Java
LEIDOS, INC.
Ashburn, VA
Leidos is seeking Lead Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic…
Added 11 hours ago
Software Developer
Booz Allen Hamilton_United States
Alexandria, VA
As a software sustainment engineer, you play a pivotal role in an application’s functional life. From troubleshooting to fixing bugs, you use your operations and maintenance skills to…
Added 12 hours ago
Software Developer III
Na Ali'i Consulting & Sales, LLC.
Arlington, VA
Nakupuna Companies is seeking a Peoplesoft developer with military personnel/pay experience. This role is a Software Developer III and will join the software development team supporting the…
Added 12 hours ago
Software Developer
ATTAINX INC
Fort Belvoir, VA · Arlington, VA
AttainX, Inc. is in search of a Full-Stack developer responsible for the design and implementation of a distributed enterprise application with external and internal interfaces utilizing…
Added 16 hours ago
Software Developer - Senior
ECS FEDERAL LLC
Stafford, VA
ECS is seeking a Developer to work in our Stafford, VA office.
Added 16 hours ago
Software Developer Sr
ECS FEDERAL LLC
QUANTICO, VA
Everforth ECS is seeking an Senior Software Developer to work in our Quantico, VA office.
Added 19 hours ago
Software Developer, Senior
ECS FEDERAL LLC
QUANTICO, VA
Everforth ECS is seeking an Sr. Software Developer to work in our Quantico, VA office.
Added 2 days ago
Front End Software Developer
CACI International
Sterling, VA
CACI is seeking an experienced Front End Software Developer to join a multidisciplined team to work on delivering the next generation of mission management systems. The ideal candidate will…
Added 4 days ago
VS
Cleared AWS Application Developer (Full Stack)
Virtual Service Operations
Herndon, VA
- $165,000 to $220,000 USD / year
Virtual Service Operations (VSO) is seeking an experienced AWS Application Developer (Full Stack) to join a highly skilled team delivering advanced cloud engineering capabilities for a…
Added 4 days ago
Jr Software Developer
LEIDOS, INC.
Ashburn, VA
Leidos is seeking Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.…
Added 4 days ago
Front End Software Developer
CACI, INC.-FEDERAL
Sterling, VA
CACI is seeking an experienced Front End Software Developer to join a multidisciplined team to work on delivering the next generation of mission management systems. The ideal candidate will…
Added 4 days ago
University, Software Developer
Booz Allen Hamilton_United States
McLean, VA
University, Software DeveloperThe Opportunity:
Added 4 days ago
Software Developer
LEIDOS, INC.
Chantilly, VA
Added 4 days ago
SI
Senior Application Developer
SOS International LLC
Fort Belvoir, VA
- $140,000 to $155,000 USD / year
SOSi is seeking a highly qualified Senior Application Developer
Added 4 days ago
Journeyman Software Developer, Access Control
Amentum
Merrifield, VA
We're tackling the challenging and critical task of ensuring secure and compliant data releasability. As a Developer on our team, you'll design, implement, and maintain complex data access…
Added 4 days ago
Front End Software Developer
CACI
Sterling, VA
CACI is seeking an experienced Front End Software Developer to join a multidisciplined team to work on delivering the next generation of mission management systems. The ideal candidate will…
Added 5 days ago
SS
Software Developer in Test (SDET)
Syms Strategic Group, LLC (SSG)
Arlington, VA
- $85,389 to $116,975 USD / year
Syms Strategic Group (SSG) is seeking a talented Software Developer in Test (SDET)
Added 5 days ago
SS
Software Developer in Test (SDET)
Syms Strategic Group, LLC (SSG)
Ashburn, VA
- $85,389 to $116,975 USD / year
Syms Strategic Group (SSG) is seeking a talented Software Developer in Test (SDET)
Added 5 days ago
Scientific Software Developer (DC, NoVA)
Stellar Science
Tysons, VA
We are a team of collaborative scientists and software engineers who are passionate about building and maintaining high-quality, extensible code using modern C++ practices. In this role,…
Added 5 days ago
Software Developer
LEIDOS, INC.
Chantilly, VA
Leidos is seeking a Software Developer to support the rapid development of operations, data analysis, and data visualization applications in a dynamic mission environment. This is a…
Added 5 days ago
S
Senior Application Developer
SOSi
Fort Belvoir, VA
- $140,000 to $155,000 USD / year
SOSi is seeking a highly qualified Senior Application Developer to join our team 100% on site in Fort Belvoir, VA, in support of our government customer. In this role, the Senior Applic
Added 5 days ago
Software Developer
BAE Systems
McLean, VA
Job Description We’re hiring a Software Developer who brings human-centered UX best practices to complex, secure enterprise systems. You’ll join a team developing end-to-end architectures…
Added 5 days ago
SS
Senior Software Developer (EDI)
Syms Strategic Group, LLC (SSG)
Arlington, VA
- $85,389 to $116,975 USD / year
Syms Strategic Group (SSG) is seeking a talented Senior Software Developer (EDI)
Added 5 days ago
SS
Senior Software Developer (EDI)
Syms Strategic Group, LLC (SSG)
Ashburn, VA
- $85,389 to $116,975 USD / year
Syms Strategic Group (SSG) is seeking a talented Senior Software Developer (EDI)

Closed listing

SOSi

Senior Application Developer

Fort Belvoir, VA, United States

$140,000 to $155,000 USD / year

This opening has closed.

The original listing is kept below for reference.

Find open jobs More jobs with this employer

About employer

Job details

Pay: $140,000 to $155,000 USD / year
Posting language: English
Posted: Oct 27, 2026

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Search current openings

Original job description

Archived listing. The details below describe a past opening.

Company Description Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.

Job Description

Overview:

SOSi is seeking a highly qualified Senior Application Developer to join our team on site in Fort Belvoir, VA, in support of our government customer. In this role, the Senior Application Developer will serve as a technical expert responsible for the design, development, integration, and maintenance of complex software applications. The position requires a strong proficiency in .NET Core and extensive experience supporting the operation, enhancement, and modernization of the ITCD (Information Technology and Compliance Directorate) family of applications. The ideal candidate excels in system integration, collaborates effectively across teams, delivers high‑quality solutions, and provides mentorship to junior developers. This role is best suited for someone who is proactive, detail‑oriented, and committed to building reliable and scalable systems.

Essential Job Duties:

Design, develop, test, and maintain high‑performance software applications.
Analyze business requirements and translate them into technical specifications.
Lead the architecture and design of application components and integrations.
Review code for accuracy, quality, and adherence to best practices.
Troubleshoot and resolve complex technical issues across the application stack.
Collaborate with cross‑functional teams, including product managers, QA, and DevOps.
Contribute to process improvements, automation, and development standards.
Mentor junior developers and support team knowledge sharing.
Stay current with emerging technologies and recommend solutions when appropriate.
Support the project manager in overseeing project operation, planning, and execution.
Formulate objectives and levels of effort through research and fact-finding with customer representatives and project managers.
Be responsible for the software development life cycle from planning to implementation to testing and documenting, to deployment and maintenance.
Assist the project manager and client in developing a schedule/timeframe for each project to ensure each one is executed efficiently and in a timely manner.
Create and maintain complete and accurate documentation on all supported applications.
Oversee technical issues related to the operation, maintenance, and modification of GOTS application.
Work with customer stakeholders to design or customize software with a focus on optimizing operational efficiency.
Apply knowledge of hardware and/or software engineering principles.
Design and/or customize software for client use to optimize operational efficiencies.
Monitor application performance and perform application changes to optimize performance.
Analyze and design GOTS applications and systems with a focus on improving functionality and stakeholder usability.
Provide evaluations and recommendations of GOTS applications and systems to provide solutions to complex technical challenges.
Follow all applicable agency policies, procedures, and regulations.
Provide technical guidance to lower-level developers and engineers.

Qualifications

Bachelor’s degree or postgraduate degree in engineering, scientific, technical, or business management disciplines from an accredited college or university.
A minimum of 5 years of technical supervisory experience in an application/software development environment.
An active in scope Top Secret security clearance, or Secret with the ability to obtain a Top Secret.
Experience with GOTS applications such as ARMIS, AAO, ACOTD, FACTS, MDR, or ADAMS.
Experience with Microsoft SQL and the .NET framework.
Experience with Configuration Management processes including Change Control Boards (CCB).
Ability to schedule, track, and perform across multiple concurrent projects.
Must have demonstrated the ability to communicate with a variety of stakeholders in multiple formats.
Must possess baseline and computing environment certifications for IAT-II IAW DoD 8570.01-M (CCNA-Security, CySA+, GICSP, GSEC, Security+, CND, or SSCP).
5–8+ years of professional experience in software or application development.
Strong proficiency in modern programming languages and frameworks (such as C#, JavaScript, .NET, or similar).
Hands-on experience with cloud platforms and services (AWS, Azure, or GCP).
Proficiency with REST APIs, microservices, and application integration patterns.
Solid understanding of relational and NoSQL databases.
Experience with CI/CD pipelines, version control systems, and automated testing.
Strong analytical, problem‑solving, and communication skills.
Ability to work independently while supporting team goals.

Additional Information

Work Environment:

Normal office conditions.
Core hours of operation are Monday through Friday, 0600 – 1700.
On government site within Fort Belvoir, VA.
No hybrid or remote availability.
Compensation: $140K - $155K yearly.

Working at SOSi:

All interested individuals will receive consideration and will not be discriminated against for any reason.

About employer

More about this job

Skills

.NET
ICT system integration
Troubleshoot
DevOps
Research
Software development
Documentation
Engineering principles
SQL
Microsoft .NET Framework
CCNA
Security+
Programming languages
C#
JavaScript
AWS
Microsoft Azure
Google Cloud
API development
Microservices
NoSQL
CI/CD
Control systems
Test automation
Problem solving
Communication skills
Work independently

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