Chantilly, Virginia, United States · On-site
$104k–$218k/yr
Job Title: Python Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: …
Skills: Python, PostgreSQL, AWS, Git, Microservices
Chantilly, Virginia, United States · On-site
SAIC seeks a Senior Principal Digital Engineer to own the technical strategy and delivery of advanced digital engineering transformation initiatives supporting national security and intelligence missions. You will drive …
Skills: Model-Based Systems Engineering, SysML, UAF, Cloud Integration, Digital Thread
Chantilly, Virginia, United States · Hybrid
Responsibilities Arcfield is seeking a senior capture management professional to focus on growth and capture initiatives within the Enterprise Digital Global Engineering (EDGE) sector. The position reports to the Vice Pr…
Skills: Capture Management, Shipley Best Practices, Win Strategy Development, Gap Analysis, Price To Win
Chantilly, Virginia, United States · On-site
🔒 Clearance & Citizenship Requirements This position requires U.S. Citizenship and an active TS/SCI security clearance with Full Scope Polygraph. Candidates who do not currently hold these credentials will not be consid…
Skills: ECL, HPCC, Python, C, SQL
Chantilly, Virginia, United States · On-site
SAIC is seeking a Systems Engineer to work on complex projects crucial to our national security objectives. They will provide Systems Engineering and Technical Advisory (SETA) services to assist the government in impleme…
Skills: Systems Engineering, MBSE, Digital Twin, System Architecture, Requirements Definition
Chantilly, Virginia, United States · On-site
SAIC is seeking a GEOINT Ground Systems Engineering & Operations Thread Engineer to join SAIC’s Prime SETA program supporting the NRO in Chantilly, VA . As the GEOINT Ground Systems Engineering & Operations Thread Engine…
Skills: GEOINT Ground Systems, Mission Thread Integration, Systems Engineering, Technical Oversight, Architectural Design
Chantilly, Virginia, United States · On-site
SAIC is seeking a GEOINT Ground Processing Systems Engineer to join SAIC’s Prime SETA program supporting the NRO in Chantilly, VA . Key Responsibilities Perform end‑to‑end engineering and analysis across GEOINT ground pr…
Skills: GEOINT Ground Processing, Systems Engineering, Technical Oversight, Operational Workflow Analysis, Cloud-Native Modernization
Chantilly, Virginia, United States · On-site
$87k–$198k/yr
Operations Team Shift Lead The Opportunity: Your combination of people skills and technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technolo…
Skills: Team Leadership, RHEL Systems Administration, Kubernetes, Docker, Terraform
Chantilly, Virginia, United States · On-site
$154k–$278k/yr
Leidos is seeking a Software Engineer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Managem…
Skills: Java, Spring Boot, Angular, Typescript, AWS
Chantilly, Virginia, United States · On-site
20260629-23-37615-3769-01 Active Top Secret Clearance with Poly Required Salary Range: Up to $225K (salary is commensurate with education and experience) Job Summary Support a team creating component based services to in…
Skills: Python, Data Science Libraries, Scikit-learn, SpaCy, TensorFlow
Chantilly, Virginia, United States · On-site
$110k–$165k/yr
RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities …
Skills: Financial Management, Cost Estimation, Budgeting, Forecasting, SAP
Chantilly, Virginia, United States · On-site
$110k–$165k/yr
RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities …
Skills: Financial Management, Cost Estimation, Budgeting, Forecasting, SAP
Chantilly, Virginia, United States · On-site
$148k–$221k/yr
The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: Cybersecurity Assessment, Penetration Testing, Vulnerability Research, Reverse Engineering, Defensive Cyberspace Operations
Chantilly, Virginia, United States · On-site
Overview Arcfield was purpose-built to protect the nation and its allies through innovations in digital transformation, space mission engineering and launch assurance, miniaturized sensors and satellites, advanced modeli…
Skills: Infosec Engineering, System Architecture Review, Network Design, Splunk, Security Compliance
Chantilly, Virginia, United States · On-site
Overview Arcfield was purpose-built to protect the nation and its allies through innovations in digital transformation, space mission engineering and launch assurance, miniaturized sensors and satellites, advanced modeli…
Skills: C/C++, Python, System Architecture Review, Network Design Documentation, Requirements Development
Chantilly, Virginia, United States · On-site
Overview Arcfield was purpose-built to protect the nation and its allies through innovations in digital transformation, space mission engineering and launch assurance, miniaturized sensors and satellites, advanced modeli…
Skills: Mobile Technologies, Mobile Networks, Mobile Operating Systems, Requirements Gathering, Program Management
Chantilly, Virginia, United States · On-site
$130k–$260k/yr
Software Engineer Department: Data Analysis and Technology Services Employment Type: Full Time Location: Chantilly, VA Compensation: $130,000 - $260,000 / year Description REQUIRED: Active TS/SCI with Full Scope Polygrap…
Skills: Lean Agile, LLM, RAG, Semantic Search, Azure
Chantilly, Virginia, United States · On-site
Join a mission driven satellite program at the forefront of national defense innovation. Our team is developing cutting edge technologies that directly support critical Department of War priorities, combining both proven…
Skills: Satellite Systems Engineering, Systems Engineering, Space Vehicle Design, Risk Mitigation, Requirements Development
Chantilly, Virginia, United States · On-site
$33/hr–$50/hr
The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: COMSEC Management, Cryptographic Device Handling, Material Accountability, Security Briefing, Classified Document Control
Chantilly, Virginia, United States · On-site
Space Systems Integration (SSI) is a fast-growing engineering company that provides aerospace solutions to a variety of government and commercial customers. Our employees are forward-thinking, self-directed individuals w…
Skills: Attitude Control System, Guidance Navigation & Control, Systems Engineering, Technical Advisory, Spacecraft Design
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Develop, test, and debug Python applications, APIs, and backend services within a microservices-based cloud environment. Collaborate with team members to translate requirements into working solutions and manage data using PostgreSQL.
Requires proficiency in Python, SQL, and AWS, along with an active TS/SCI clearance with Polygraph and DoD 8570 IAT Level II certification. A Bachelor's degree in Computer Science or a related field is required.
The Opportunity:
We are seeking a skilled Python Developer to join our dynamic team. The ideal candidate will develop, test, and debug Python applications, APIs, and backend services, utilizing Git for version control and collaborating in a microservices-based cloud environment. Responsibilities include working with databases like PostgreSQL, participating in the full software development lifecycle, and continuously learning new tools and best practices.
Responsibilities:
Develop, test, and debug Python applications, APIs, automation scripts, and backend services
Use Git for version control and take part in code reviews and concurrent development workflows
Work with databases such as PostgreSQL to store, query, and manage data using SQL
Contribute to microservices-based applications running in cloud environments such as AWS
Participate in the software development lifecycle, including planning, development, testing, and release
Collaborate with team members to understand requirements and translate them into working solutions
Document your work clearly so others can build on it
Continuously learn new tools, languages, and best practices as you grow in the role
Qualifications:
Required:
Proficiency in Python programming, including familiarity with common Python frameworks and libraries
Familiarity with databases and SQL (e.g., PostgreSQL, MySQL)
Experience using agentic coding tools and AI-assisted development
Knowledge of Cloud computing concepts and AWS
Working experience with version control using Git
Understanding of microservices and RESTful APIs
Basic understanding of the software development lifecycle (planning, development, testing, and release)
Strong problem-solving skills, attention to detail, and a genuine eagerness to learn
Good communication skills and the ability to work well on a collaborative team
Active TS/SCI clearance with Poly
DoD 8570 IAT Level II certification (e.g., Security+ CE)
Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field
Desired:
Exposure to or interest in Large Language Models (LLMs)
Familiarity with Retrieval-Augmented Generation (RAG) concepts
Familiarity with Docker or CI/CD pipelines
Personal projects, internships, or open-source contributions that show your interest in software development
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$103,800 - $218,100Expanding the limits of national security
At CACI International Inc (NYSE: CACI), our 27,000 talented and dynamic employees are ever vigilant in delivering distinctive expertise and technology to meet our customers’ greatest challenges in national security. We are a company of good character, relentless innovation, and long-standing excellence. Our culture drives our success and earns us recognition as a Fortune World's Most Admired Company. CACI is a member of the Fortune 500™ Largest Companies, the Russell 1000 Index, and the S&P MidCap 400 Index. For more information, visit us at www.caci.com. CACI is an Equal Opportunity Employer - Females/Minorities/Protected Veterans/Individuals with Disabilities
Offices: 12021 Sunset Hills Rd, Reston, Virginia 20190, US
Based on 581 listings with disclosed salaries, most government & public sector jobs in Chantilly, VA pay between $78k–$218k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 894 open government & public sector positions in Chantilly, VA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Booz Allen Hamilton, SAIC, CACI International Inc, KBR, Inc., Leidos, among others. Browse the listings above to see every active employer.
Yes — 78 of the 894 open government & public sector positions offer remote or hybrid work (28 remote, 50 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
