HiringCafe
Join our community

93 software intern jobs at 53 companies in Leesburg, VA

2mo
Save
Mark Applied
Hide
Software Engineering Intern
Annapolis Junction, Maryland, United States
OnsiteInternship
Entegra Systems
Entegra Systems: Provides engineering and intelligence analysis for government missions.
0+ YOEStudent pursuing a Bachelor's in CS/Software Engineering; interest in VR, OO programming; able to learn and work in a team.
Message Queues, DDS, REST, Networking, Data Modeling, Storage, Software Libraries
Job PostingView all
2mo
Save
Mark Applied
Hide
Software Engineering Intern
Washington, District of Columbia, United States
HybridInternship
Social Impact
Social Impact: Provide management consulting for global development effectiveness.
0+ YOEPursuing CS/SE/Data Science degree; strong problem-solving; able to work independently and with others; interest in scalable enterprise systems; US citizen; DC area; internship; background check.
Node.js, React, Python, PostgreSQL, REST APIs, Git/GitHub
Job PostingView all
2mo
Save
Mark Applied
Hide
Software Engineer Intern - Fulton, MD
Fulton, Maryland, United States
$30-$38/hr OnsiteMultiple Commitments Available
ICR
ICR: A research and analytics providing software development services.
Pursuing Bachelor's in CS/CE/EE; strong Python/Java/HTML/JavaScript; software lifecycle experience; Windows/Linux API knowledge; client/server; problem solving; communication; self-motivation; teamwork.
Python, Java, HTML, JavaScript, Windows API, Linux API, Git, Jenkins, CI/CD
Job PostingView all
1mo
Save
Mark Applied
Hide
2027 Software Engineer Intern
Costa Mesa or Irvine or Atlanta or Seattle or Boston or Reston
$45-$50/yr OnsiteInternship, Full Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
Pursuing a Bachelor\u0002s in CS or related field, rising senior returning to school, proficiency in C++, Go, Rust, Java, or Python, familiarity with algorithms, data structures, cloud and front-end concepts, and U.S. Person status required.
C++, Go, Rust, Java, Python, Lattice OS
Job PostingView all
1w
Save
Mark Applied
Hide
Software Engineering Intern
McLean, Virginia, United States
$50/hr OnsiteFull Time, Internship
Appian
AppianNASDAQ: APPN: Provides a low-code platform for enterprise-grade process automation.
Currently pursuing a Bachelors or Masters in Computer Science or Computer Engineering; full-time 40hr/week availability for a 10-week summer internship; strong AI/LLM fluency and foundational CS knowledge.
AI, LLMs, Appian
Job PostingView all
2mo
Save
Mark Applied
Hide
Software / Hardware Engineering - Intern
Annapolis Junction, Maryland, United States
OnsiteFull Time, Internship
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
Enrolled in a STEM Bachelor's or Master's program, experience with software programming or hardware logic circuits, ability to obtain and maintain a U.S. government security clearance, submit transcript with GPA and projected graduation date.
Python, C++
Job PostingView all
1d
Save
Mark Applied
Hide
Summer 2027 Software Developer Internship
Annapolis Junction, Maryland, United States
$26-$35/hr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
0+ YOEUndergraduate computer science/engineering students (≥2 years) or strong candidates with CS coursework; proficiency in Python, Java, C/C++, Rust, JavaScript/TypeScript; software design and SDLC knowledge; teamwork and presentation skills.
Java, Python, C/C++, Rust, JavaScript, TypeScript
Job PostingView all
1d
Save
Mark Applied
Hide
Summer 2027 Software Developer Internship
Annapolis Junction, Maryland, United States
$26-$35/hr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
At least 1–2 years of college coursework in CS/related engineering, proficiency in Python/Java/C/C++/Rust/JavaScript/TypeScript, software design and SDLC knowledge, teamwork and presentation skills; US citizenship required.
Java, Python, C/C++, Rust, JavaScript, TypeScript, Software Development Life Cycle (SDLC)
Job PostingView all
1mo
Save
Mark Applied
Hide
Intern – Space Software Engineering, National Security Space
Chantilly, Virginia, United States
OnsiteInternship
Redwire
RedwireNYSE: RDW: Manufactures infrastructure and hardware components for diverse space missions.
Currently enrolled in a Bachelor's, Master's, or Ph.D. in a relevant discipline; US work authorization per ITAR; willingness to work on a ~10-week, hands-on internship; background check required; strong teamwork and academic record.
Job PostingView all
2mo
Save
Mark Applied
Hide
Embedded Software Engineer
Shady Grove, Pennsylvania, United States
OnsiteFull Time
Manitowoc
ManitowocNYSE: MTW: Manufactures and services heavy-duty cranes and lifting equipment.
10+ YOESenior embedded software engineer with 10+ years in real-time/safety-critical systems; leadership experience; strong C/C++ skills; knowledge of safety standards; travel both international and domestic.
C, C++, RTOS, CAN, J1939, LIN, Ethernet, MATLAB/Simulink, Git, Azure DevOps, Linux
Job PostingView all
1w
Save
Mark Applied
Hide
iOS CNO Software Engineer
Chantilly, Virginia, United States
OnsiteFull Time
REDLattice
REDLattice: Provides advanced cybersecurity software and vulnerability research services.
Experience developing iOS software, exploit development, reverse engineering, kernel and OS internals, strong programming in Objective-C/Swift/C/C++/Python, active TS/SCI with polygraph, bachelor's degree in a technical field.
Objective-C, Swift, C, C++, Python, LLDB, IDA Pro, Ghidra, Frida, Hopper, Git, Bitbucket, ARM64
Job PostingView all
5d
Save
Mark Applied
Hide
IT Intern – AI/Software (Fall Semester)
Gaithersburg, Maryland, United States
$18-$22/hr HybridInternship, Seasonal
Boland
Boland: Commercial HVAC systems, services, and energy solutions provider.
1+ YOEPursuing an IT degree, 1–2 years IT experience preferred, familiar with computer hardware/software, Microsoft Power Platform helpful, able to lift 40 lbs, strong communication and client-service skills.
Microsoft SharePoint, Microsoft Power Platform
Job PostingView all
1mo
Save
Mark Applied
Hide
Cyber Software Engineer-Principal
Annapolis Junction, Maryland, United States
OnsiteFull Time
NetSage
NetSage: Delivering specialized cyber services to the U.S. federal government.
11+ YOETS/SCI with polygraph required; B.S. in Computer Science (or equivalent experience) with 11+ years; strong Python; able to read C/C++ and x86 Assembly; experience with OS internals, software architecture, executable analysis, and debugging.
Python, C, C++, x86 Assembly
Job PostingView all
2d
Save
Mark Applied
Hide
Senior CNO Software Engineer
Hanover, Maryland, United States
$142k-$236k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
14+ YOEDevelop CNO capabilities: design/develop/debug software and hardware, network/socket programming (TCP/IP), Python or C/C++ experience, low-level system internals, TS/SCI w/ Poly clearance required.
Python, C/C++, TCP/IP, JIRA, Confluence, Crucible, assembly
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Warrenton or Colorado Springs or Florida
$110k-$150k/yr HybridFull Time
Auria
Auria: Engineering and software solutions for space and defense missions.
5+ YOEActive Secret clearance and US citizenship required; 5+ years systems engineering; Bachelor's in CS or equivalent; strong Python (asyncio), C++ (C++17/20), pybind11/Cython, Kubernetes/Docker, Linux internals, CI/CD (ArgoCD, GitHub Actions), Prometheus/Grafana.
Python, asyncio, C++, pybind11, Cython, Kubernetes, Docker, ArgoCD, GitHub Actions, Prometheus, Grafana, CMake, GitLab CI/CD
Job PostingView all
3w
Save
Mark Applied
Hide
Principal Software Engineer TS/SCI w/Poly
Fort Meade, Maryland, United States
$200k-$255k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
Design, develop, test, and maintain low-level and high-performance software; proficiency with Python and ability to read C/C++ and x86 Assembly; experience with OS internals, compilers, and reverse engineering.
Python, C/C++, Assembly (x86)
Job PostingView all
2w
Save
Mark Applied
Hide
Software Developer, GO Systems
Austin or Menlo Park or Washington or New York City
$171k-$240k/yr OnsiteFull Time
Meta
MetaNASDAQ: META: Develops social networking platforms and virtual reality technologies.
8+ YOEBachelor's degree or equivalent,8+ years building and shipping full‑stack projects,experience scaling internal tooling and driving multi‑team technical roadmaps,ability to communicate across global teams.
PHP, Hack, JavaScript, React
Job PostingView all
1w
Save
Mark Applied
Hide
Fall International Affairs Intern
New York or Washington
$15/hr HybridInternship, Part Time
Anti-Defamation League
Anti-Defamation League: Combats antisemitism and defends civil rights through advocacy
High school diploma required; strong research, writing, database, communication, and organizational skills; familiarity with office software and social media; interest in international relations.
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior Software Engineer-Internal Tools
Arlington or Clarksburg
$125k-$140k/yr OnsiteFull Time
Forterra
Forterra: Develops autonomous ground vehicle systems and software for defense.
3+ YOE3+ years software engineering; experience with Rust or strong systems languages, TypeScript/React, Linux, Docker, CI/CD, scripting (Bash/Python); ability to debug across app, OS, and network layers.
Rust, C, C++, Go, TypeScript, React, Linux, Docker, GitLab CI, Jenkins, Bash, Python, Tauri, Ansible, Jetson, Orin, ARM64, AWS, S3, IAM, EC2, Conan
Job PostingView all
4w
Save
Mark Applied
Hide
Appian Intern (Paid Internship)
Washington, D.C. or United States
$20/hr HybridInternship, Full Time
Horizon Industries
Horizon Industries: Provides IT and management consulting services to government clients.
Bachelor's in a technical field required; strong analytical, communication, and teamwork skills; eagerness to learn Appian low-code development; preferred familiarity with Java/Python/JavaScript/SQL and Agile.
Appian, Java, Python, JavaScript, SQL
Job PostingView all

Explore Jobs

Expand Your Job Search