Python Developer Jobs in Harrington, DE, US

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OCO Software Developer/Engineer

Annapolis Junction, Maryland, United States

$149k-$201k/yr HybridFull Time

General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.

8+ YOE8+ years of related experience; proficient in C/C++, Python; ability to obtain TS/SCI clearance; develop cyber tools and software.

C, C++, Python, Rust, Go, Git, CI/CD

2mo

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2mo

CNO Developer

Hanover, Maryland, United States

OnsiteFull Time

ManTech: Delivers technology and cybersecurity solutions to national security agencies.

4+ YOEDevelop and implement CNO capabilities; strong Python/C++ skills; TS/SCI with poly clearance preferred.

Python, C/C++, JIRA, Confluence, Crucible, TCP/IP

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Software Developer

Annapolis Junction, Maryland, United States

OnsiteFull Time

BigBear.aiNYSE: BBAI: Provides AI-powered decision intelligence software for national security.

7+ YOE7+ years in software development; TS/SCI with Poly; Bachelor's in CS; Linux development; C/C++, Python; Git/GitLab; IDEs (VSCode, Eclipse); Agile (Scrum); geospatial processing and SDR familiarity.

Linux, C/C++, Python, Git, GitLab, VS Code, Eclipse, Agile (Scrum)

1mo

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1mo

Embedded Developer Level 1

Annapolis or Fort Meade

OnsiteFull Time

Adaptic: Software and systems engineering services for government defense agencies.

5+ YOETS/SCI with Polygraph; Bachelor's degree; 5+ years embedded development; C/C++ and Python; low-level programming in Windows/Linux/RTOS; full lifecycle involvement.

C, C++, Python, RTOS, VxWorks, uC/OS, Windows, Linux

1mo

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1mo

1650 - Software Developer

Belcamp, Maryland, United States

$83k-$140k/yr OnsiteFull Time

Sigma Defense: Develops tactical communications and intelligence systems for defense.

10+ YOE10+ years in software development; 5+ years DoD software support; strong requirements analysis, architecture, and coding skills; Java, Python, C#, and JavaScript; ability to document software; U.S. citizen; Secret security clearance or higher; Bachelor's Science degree.

Java, Python, C#, JavaScript

1mo

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1mo

Java Software Engineer

Annapolis Junction, Maryland, United States

$147k-$249k/yr OnsiteFull Time

BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.

Bachelor's in CS or related; experience with Java/JEE, Python, C/C++, SQL, SOAP/WSDL; UI development; Windows/Linux; Jenkins; TS/SCI Polygraph; strong software development principles.

Java, Python, C/C++, SQL, XML, HTML, Tomcat, WebLogic, JBoss, Jenkins, Postgres, Oracle, Selenium, Mockito, Cucumber, UFT, FitNesse, TDD, SAFe

2mo

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2mo

Full Stack Developer (MD, Hanover)

Hanover, Maryland, United States

OnsiteFull Time

Eccalon: Develops cybersecurity, AI, and defense technology solutions for government.

3+ YOE3+ years as a full stack developer; React/Next.js; Node.js/Python; DoD/regulatory experience a plus; AI/LLM integration experience.

React, Next.js, Node.js, Python, AWS, PostgreSQL, DynamoDB, MongoDB, REST APIs, Git

2mo

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2mo

Software Engineer 3

Annapolis Junction, Maryland, United States

OnsiteFull Time

RealmOne: Provides technology and intelligence services for national security missions.

20+ YOETwenty years SWE experience; BS in computer science; strong Python, Kubernetes, Git, CI/CD, sprint development; RF experience; active security clearance with polygraph.

Python, Kubernetes, Git, CI/CD, Sprint

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Journeyman Software Developer

Aberdeen, Maryland, United States

$104k-$181k/yr OnsiteFull Time

ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.

4+ YOEBachelor's in CS/Engineering with 4 years experience or 6 years related software development experience; US citizenship; SECRET clearance; proficiency in Python, C++, Java, C#; CI/CD; DoD/C-UAS experience preferred.

Python, C++, Java, C#, CI/CD, containerization, microservices, cloud

2mo

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2mo

Software Engineer

Annapolis Junction or Hanover

$50k-$290k/yr OnsiteFull Time

The Swift Group: Engineering and technology solutions for the national security community.

US citizen with active TS/SCI clearance; Linux proficiency; programming in Python/Java/C/C++/JavaScript; Git; container tech (Docker/Kubernetes); shell scripting; experience with CI/CD; strong security-focused software development.

Bash, Python, Java, C, C++, JavaScript, Git, Docker, containerd, Podman, Kubernetes, Ansible, FastAPI, React, MongoDB, PostgreSQL, RabbitMQ, Kafka, Elastic Stack, Prometheus, Grafana, Splunk, Jira, Confluence, Slurm, AWS

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Summer 2026 Software Developer Internship

Annapolis Junction, Maryland, United States

$26-$35/hr OnsiteFull Time

GDITNYSE: GD: Delivers IT and mission services to government agencies.

0+ YOE0+ years of related experience; proficiency in Python, Java, C/C++, Rust, JavaScript/TypeScript; US citizenship required; software development best practices; teamwork.

Python, Java, C/C++, Rust, JavaScript/TypeScript

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Software Engineer, Lead

Annapolis Junction, Maryland, United States

$113k-$257k/yr RemoteFull Time

Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.

20+ YOEFull-stack developer with Kubernetes, Docker, Helm, Python, and version control; TS/SCI with polygraph; Bachelor's in CS or 20+ years experience, or 24+ years without a degree.

Kubernetes, Docker, Helm, Python, Git

1mo

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1mo

CNO Developer

Hanover or Fort Meade

$120k-$150k/yr OnsiteFull Time

T-Rex Solutions: IT modernization and cybersecurity for the federal government.

4+ YOEBS in a technical field or HS diploma with 4+ years of technical experience; proficient in Python or C/C++; capable of troubleshooting and debugging; onsite role; TS/SCI w/Polygraph clearance.

Python, C/C++, TCP/IP, socket programming, Assembley programming concepts, Atlassian tools (JIRA Confluence Crucible), JIRA, Confluence, Crucible

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AI/ML Engineer

Annapolis or United States

$120k/yr RemoteFull Time

Innosoft Corporation: Provides IT and data solutions for government health agencies.

5+ YOEFive+ years data science/ML and five+ years software engineering experience; bachelor's in CS/engineering/data science/math; strong Python, SQL, ML/AI development, and system design skills.

Python, SQL, PostgreSQL, Git, Docker, React, Microsoft Teams Toolkit, Neo4j, Apache AGE, LLMs, Rust, vector databases

1mo

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1mo

Embedded Developer

Annapolis Junction, Maryland, United States

OnsiteFull Time

Tiber Technologies: Providing specialized engineering and security services for federal missions.

Must be a U.S. citizen; active clearance with a polygraph; Bachelor's degree in CS, engineering, or related field; embedded/low-level development experience preferred

Linux, Windows, Embedded systems, Ghidra, C, C++, Python, Rust, Go, Git, Subversion, Jira, Confluence, PowerShell, Bash, Assembly, Java, JavaScript

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Agile Developer 3

Annapolis Junction, Maryland, United States

OnsiteFull Time

Base-2 Solutions: Delivers engineering and technology services for national security.

7+ YOEActive TS/SCI with Full Scope Polygraph (CI Poly in last 7 years); 7-9 years experience; AWS tools; Java/Spring Boot or Python; microservices, CI/CD, and related tech.

Java, Spring Boot, Python, AWS, DynamoDB, Lambda, CloudWatch, Maven, GitLab, GitOps, Kubernetes, Docker, Ansible, Cypress, Cucumber

1mo

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1mo

CNO Software Engineer

Annapolis Junction or Annapolis

$113k-$257k/yr OnsiteFull Time, Part Time

Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients

8+ YOE8+ years software and embedded development; TS/SCI with polygraph; Bachelor's in CS/CE/EE/Math/Physics; experience with C/C++, Golang, JavaScript, Python, or Ruby; Linux; Git; scripting; vulnerability analysis; network protocols; FPGA/ASIC (nice); RF/Signals (nice).

C, C++, Golang, JavaScript, Python, Ruby, Linux, Git, Wireshark, tshark, Bash, FPGA, ASIC

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Mid-Level Application Developer

Fort Meade, Maryland, United States

$70k-$190k/yr OnsiteFull Time

Belay Technologies: Provides specialized technology and engineering services to the DoD.

6+ YOETS/SCI with polygraph; 6 yrs experience or 4 yrs with B.S./4 yrs M.S; proficient in C/C++/Python; Unix; network programming; Jira/Confluence; Git/Subversion.

C/C++, Python, Unix, Network Programming, Jira, Confluence, Git, Subversion

1mo

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1mo

Software Engineer - Hybrid

Annapolis Junction, Maryland, United States

$165k-$185k/yr HybridFull Time

Red Arch Solutions: Provides IT engineering solutions for the intelligence community.

3+ YOETS/SCI with Poly required; degree plus years; Linux, Bash, Python/Java, Airflow, Spark, Docker/Podman, Git; AWS familiarity.

Apache Airflow, Python, Java, Bash, Linux, Apache Spark, Docker, Podman, Git, AWS

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AI Engineer

Auburn or Aberdeen

OnsiteFull Time

Integrated Solutions for Systems: Provides engineering and management solutions for defense and government.

5+ YOEBachelor’s degree in engineering, computer science, or related field; 5+ years AI experience; agentic AI; cloud platforms; programming in Go/C++/Python; US citizenship and ability to obtain clearance; willing to travel.

Go, C++, Python, JetBrains, VSCode, REST, GraphQL

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Software Engineer 1

Annapolis Junction, Maryland, United States

OnsiteFull Time

RealmOne: Provides advanced technology services for national security agencies.

7+ YOESeven years of SWE experience in similar scope; Bachelor’s in CS or related field; strong Python/GIT with CI/CD and Kubernetes, or VueJS stack; active clearance with polygraph.

Python, Git, CI/CD, Kubernetes, Vue.js, Vuetify, Leaflet, ElasticSearch, Node.js, REST, GRPC, MongoDB

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Expert Offensive CNO Software Developer

Hanover, Maryland, United States

$178k-$353k/yr OnsiteFull Time

Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.

6+ YOEActive US security clearance with polygraph; 6+ years in cyber/software; BS in Math/Science/Engineering or related; programming in Assembly/C/C++/Java/Perl/Python; experience with CNO tools.

Assembly, C, C++, Java, Perl, Python, CNO Tools and Techniques

2mo

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2mo

Software Engineer (NH-2)

Annapolis Junction, Maryland, United States

$180k-$205k/yr OnsiteFull Time

Legato: Provides IT engineering services to the national intelligence community.

14+ YOEPython, Docker/Kubernetes; AWS and ML experience preferred; 14 years software engineering experience; bachelor’s degree or 18 years total experience.

Python, Docker, Kubernetes, AWS, PyTorch, NumPy, Pandas, Scikit-learn, GitOps, EC2, S3, RDS

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Data Engineer II

Annapolis, Maryland, United States

$110k/yr OnsiteFull Time

Crisis24: Integrated risk management and global crisis response solutions.

2+ YOEMaster's or Bachelor's in CS/DS/IT with 2+ years experience; strong Python, SQL, NoSQL, data modeling, testing, and data visualization.

Python, SQL, NoSQL, Data Visualization, Automated Testing, Big Data Technologies

2mo

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2mo

Lead CNO Developer (Onsite)

Annapolis Junction, Maryland, United States

OnsiteFull Time

Nightwing: Provides cybersecurity and intelligence services for national security missions.

12+ YOE5+ MgmtBachelor’s degree plus extensive experience; 12+ yrs in programming (Assembly, C, C++, Java, Perl, Python); 10+ yrs on CNO tools; 5+ yrs leading teams; 4+ yrs evading IDS; 4+ yrs sockets programming.

Python, C, C++, Java, Perl, Assembly, Bash, PowerShell, IDA Pro, Ghidra, OllyDbg, Git, Networking, IDS evasion

1mo

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1mo

CNO Software Engineer

Annapolis Junction, Maryland, United States

$250k-$300k/yr OnsiteFull Time

SIXGEN: Provides advanced cybersecurity services and products for national security.

7+ YOE7+ years of experience; TS clearance; strong C/C++, Python; assembly; reverse engineering with Ghidra/IDA Pro; Windows/Linux CNO; persistence focus.

C/C++, Python, Assembly, Ghidra, IDA Pro, Windows, Linux, NDK

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Software Engineer - Junior Level

Annapolis Junction, Maryland, United States

$98k-$123k/yr HybridFull Time

Boeing Intelligence & AnalyticsNYSE: BA: Provides intelligence analytics and cyber solutions for national security.

0+ YOEBachelor's in CS or related field or 4 years of software engineering experience; TS/SCI with poly; Agile, Jira/Confluence; experience with Java/C++/Python, Git, Postgres; AWS preferred.

Git, Java, C++, Python, PostgreSQL, Jira, Confluence, AWS, Docker, Kubernetes, HAProxy, Nginx, Elastic Stack

1mo

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1mo

Software Engineer, Level 1 (AE26031323SW1)

Annapolis Junction, Maryland, United States

$145k-$155k/yr HybridFull Time

Advantage Engineering & IT Solutions: Provides technical engineering and IT services for government agencies.

7+ YOESeven years of DoD/IC software engineering experience; Java, Python; Git; IntelliJ/Eclipse; Maven; Spring Boot/Flask; Top Secret/SCI with polygraph.

Java, Python, Git, IntelliJ, Eclipse, Maven, Spring Boot, Flask, Kafka, Flink, MongoDB, ArangoDB, Redis, PostgreSQL, Elasticsearch, Kubernetes, Docker, Containerd, AWS

2mo

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2mo

Software Engineer II

Annapolis Junction, Maryland, United States

$76k-$144k/yr OnsiteFull Time

RTXNYSE: RTX: Designs and manufactures aircraft engines and defense systems.

2+ YOETypically requires STEM degree and 2+ years of software development experience; TS/SCI clearance or ability to obtain; strong C++ in Linux; scripting and XML; UI and web skills preferred.

C++, Linux, Python, Bash, Perl, JavaScript, XML, Qt, Angular, TensorFlow, git

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CyberTron Contract: Software Engineer I

Aberdeen, Maryland, United States

$85k-$110k/yr OnsiteFull Time

Techximius: Provides specialized IT and engineering services for defense missions.

1+ YOEEntry-level software engineer with skills in Java/C/C++, Python, or JavaScript; knowledge of backend, web apps, and microservices; DoD environment familiarity preferred.

Java, C/C++, Python, JavaScript, Backend development, Web technologies, Microservices, SQL

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Cleared Senior Embedded Systems Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

Yellow Duck Technologies: Engineering mission-critical software and systems for the intelligence community.

12+ YOEActive TS/SCI with Full Scope Poly, 12+ years embedded systems experience, degree in related field or equivalent, proficient in Python, C, ASM, and debugging tools.

Python, C, ASM, VxWorks, ELDK

2mo

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2mo

Entry-Senior Software Engineer- TS/SCI w/ Polygraph

Annapolis Junction, Maryland, United States

$95k-$230k/yr OnsiteFull Time

Sunayu: Software and cybersecurity engineering services for government intelligence agencies.

Software engineer with Java, Python, Git; containerization; CI/CD; Agile; Spring, Hibernate, MySQL; BS in CS or related, 4 years exp may substitute

Java, Python, Git, Shell, Maven, JavaScript, HTML, CSS, JUnit, IDEs, Docker, Kubernetes, OpenShift, GitLab CI, SonarQube, Spring, Hibernate, MySQL, Web Services, Vaadin

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AI/ML Software Engineer

Annapolis, Maryland, United States

HybridFull Time

APV: Provides information technology and consulting services to government agencies.

3+ YOE3+ years data science/ML and 3+ years software engineering/architecture; experience with AI-enabled software systems, Python backend, SQL databases; familiarity with AI/LLM and non-LLM approaches.

Python, PostgreSQL, Git, Docker

2mo

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2mo

Senior Software Engineer - Vehicle Modeling

Sunnyvale or Mountain View or Milford

$129k-$198k/yr HybridFull Time

General MotorsNYSE: GM: Manufacturer of passenger cars, trucks, and automotive components.

3+ YOEBachelor's degree in Mechanical Engineering, Applied Physics, Aerospace Engineering, Computer Science, or related field; 3+ years in vehicle modeling; expertise in vehicle system modeling; strong Python and C/C++; Matlab/Simulink and data analysis experience.

Python, C/C++, Matlab/Simulink, System ID, data analysis

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Embedded Software Engineer (Hybrid- Aberdeen, Maryland)

Aberdeen Proving Ground or Jersey City or Middletown or Aberdeen Proving Ground

$130k-$165k/yr HybridFull Time

Fairwinds Technologies: Designing and integrating communication systems for defense agencies

8+ YOE8+ years embedded Linux software development; Xilinx UltraScale+; PetaLinux; PCB-based hardware bring-up; C/C++ and scripting; Git/SVN; DoD Secret clearance.

Xilinx UltraScale+, PetaLinux, C/C++, Python, Git, SVN, JTAG, UART, GDB, strace, perf, dmesg

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Senior Agile Developer

Annapolis Junction, Maryland, United States

$169k-$218k/yr OnsiteFull Time

Intelliforce: Provides engineering and technical solutions for the intelligence community.

10+ YOETen years of demonstrable experience in integrating, installing, configuring, upgrading, compiling, and supporting software in heterogeneous HPC environments; TS clearance with Full Scope Poly; US citizenship; BS in CS or related field (or 5 years’ related work with 10 years of experience); related certifications may substitute for experience.

Linux, Bash, Python, VMware ESXi, Docker, Ansible, GitLab CI, Git, CI/CD, virtualization, Containerization, Monitoring, Networking, Scripting

2mo

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2mo

Software Engineer

Fort Meade, Maryland, United States

$200k-$230k/yr OnsiteFull Time

Markon: Provides consulting and mission support services to federal agencies.

14+ YOETS/SCI with poly; Bachelor's in CS/Engineering; 14 years experience; Linux, C++, Java; scripting; Git; Docker; strong problem-solving and communication.

C++, Java, Shell, Python, JavaScript, Bash, Git, Docker, Linux

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Back End Developer (7+ Yrs and Clearance Required) – San Antonio, TX

San Antonio or Fort Meade

HybridFull Time

CNF Technologies: Cybersecurity firm providing R&D and engineering for defense clients.

7+ YOE7 years of software development experience; AWS, Kubernetes, RESTful APIs; Jenkins/GitLab; TS/SCI clearance; US citizen.

AWS, Kubernetes, Red Hat Linux, Jenkins, GitLab, Docker, OpenJDK, Ansible, Packer, Maven, Java, Python, PostgreSQL, RDS, Exodus, Luna

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CFD Propulsion Research Engineer

Aberdeen Proving Ground, Maryland, United States

$100k-$200k/yr OnsiteFull Time

Altus Engineering: Provides engineering and software services for defense systems.

4+ YOEBachelor or higher in Mechanical or Aerospace Engineering with 4+ years, or MS with 2+ years, or PhD with 0+ years; SECRET clearance; CFD experience; ANSYS Fluent; MATLAB/Python.

ANSYS Fluent, MATLAB, Python