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Python Test Software Developer Jobs in Lake Barcroft, VA, US
160+ python test software developer jobs from 95 companies hiring in Lake Barcroft, VA, US.
6d
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CNO Python Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
7+ YOEBachelor’s in CS or related field with 7 years programming, or 11 years experience; Python; Docker; Kubernetes; Ansible; CI/CD; Windows and Linux; security clearance TS/SCI w/ Poly; experience with SQL/NoSQL; software testing and deployment.
Python, Docker, Kubernetes, Ansible, CI/CD, VMware, Java, SQL, NoSQL, Git, Subversion, Confluence, Jira, Crucible
1w
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AI Software Test Engineer
Dahlgren, Virginia, United States
HybridFull Time
3+ YOEActive Secret clearance; 3+ yrs in QA/testing of tactical software; AI testing experience; non-deterministic testing; Python a plus; DoD background.
Python, Software Testing
2w
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Software Engineer - Python
Annapolis Junction, Maryland, United States
OnsiteFull Time
Develop Python/FastAPI middleware; build pipelines; implement REST API; ensure testing; participate in Agile sprints; documentation.
Python, FastAPI, REST API, Git, Agile, DevSecOps, Axway, Windows NAS, SQL, UAT
1w
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Software Test Engineer
Germantown, Maryland, United States
$56k-$74k/yr HybridFull Time
Bachelor’s degree in Electrical Engineering, Computer Science, Computer Engineering, Software Engineering; embedded systems knowledge; strong communication; entry-level with internship experience preferred.
Python, C, C++, Windows, Linux, IBM ELM, test automation tools
1w
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Software Test Engineer
Annapolis Junction, Maryland, United States
$159k-$204k/yr OnsiteFull Time
5+ YOETop Secret clearance with Full Scope Polygraph; US citizenship; Technical Bachelor’s degree with 5 years’ relevant experience, or High School diploma with 9 years’ relevant experience; strong testing background in manual and automated QA.
Behave, SoapUI, Selenium, JUnit, JRunner, REST, JSON, XML, Groovy, Perl, Python, Ruby, Cron, Java, LDAP, PKI, Git, SVN, CVS, SQL
1mo
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Software Development Engineer in Test (SDET)
Arlington, Virginia, United States
OnsiteFull Time
5+ YOE5+ years in software development or test; strong Python/C/C++/Rust; automated test frameworks; embedded/Linux; CI/CD; HW/SW debugging; documentation; strong communication; active U.S. security clearance.
Python, C/C++, Rust, pytest, Robot, Docker, Kubernetes, QEMU, Wireshark, Scapy, CI/CD, Firmware testing, Linux
3w
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Cyber Software Test Engineer
Chantilly, Virginia, United States
OnsiteFull Time
5+ YOEActive Secret security clearance or higher; Bachelor's degree with 5-8+ years, Master's with 6 years, PhD with 4 years, or 12 years of experience in lieu of a degree; experience in software/hardware testing; strong test planning and communication skills.
Python, JavaScript, Azure DevOps, Jira, TestComplete, UNIX command line
1mo
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Software Test Engineer - MDFM 1645
Fort Meade, Maryland, United States
OnsiteFull Time
3+ YOE3-5 years in test automation, FE/ integration testing; experience with CNO Tools, CI/CD, and containerization.
CNO Tools, Docker, VMware, Bash, Python, Java, C, Gitlab, Atlassian Bamboo
2w
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Test Engineer
Annapolis Junction, Maryland, United States
$87k-$198k/yr OnsiteFull Time
1+ YOE1+ year automated testing, Python development, CI/CD, test case design, and experience with lab/DevOps environments.
Python, PyTest, unittest, nose2, doctest, Robot, tox, hypothesis, GIT, Splunk, Jenkins
2mo
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Test Engineer
Annapolis Junction, Maryland, United States
$87k-$198k/yr HybridFull Time
1+ YOEExperience with automated testing, Python development, DevOps, and CI/CD; TS/SCI clearance with polygraph.
Python, PyTest, unittest, nose2, doctest, Robot, tox, hypothesis, CI/CD, Splunk, Jenkins
5d
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Mission Systems Software Test Engineer II
Reston, Virginia, United States
OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
BS in engineering or physics; software testing experience; space systems knowledge; programming in Python/Golang/Rust/C++ ; cloud experience; strong communication.
AWS, Azure, Confluence, JIRA, Git, Python, Golang, Rust, C++
2w
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Staff Cyber Software Test Engineer
Chantilly, Virginia, United States
$161k-$241k/yr OnsiteFull Time
12+ YOEActive Secret clearance required; BS with 12+ yrs, MS with 10 yrs, or PhD with 8 yrs; experience in software/hardware testing; strong analysis and communication skills.
Python, JavaScript, Jira, Azure DevOps, TestComplete, UNIX, Android, Windows, Linux
1w
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Python Engineer, Agentic AI
Washington or Philadelphia
$121k-$181k/yr HybridFull Time
2+ YOEProficient in Python with backend focus, testing, and Agile collaboration; experience with AI agent workflows and RESTful services.
Python, Git, CI/CD, pytest, REST APIs, FastAPI, Docker, Asyncio
1mo
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Software Development Engineer In Test (SDET)
Baltimore, Maryland, United States
$105k-$125k/yr HybridFull Time
3+ YOEBachelor's in CS/IT or related field; 3+ years in QA/SDET; AI-assisted testing experience; manual testing; Python; Playwright; CI/CD; Agile collaboration.
Python, Playwright, Robot Framework, GitHub Copilot, ChatGPT, Claude, Selenium, Cypress, CI/CD
4w
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Principal Software Engineer for Integration & Test
Arlington or Dayton or Remote or Woburn
$206k-$284k/yr HybridFull Time
5+ YOELead real-time software development for RF sensor systems; open architecture, C/C++, MATLAB/Python prototypes, travel ~20%, security clearance required.
C++, Python, MATLAB, CUDA, OpenCL, Linux, Embedded systems, CI/CD, Containerization
1mo
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Test Engineer
Tysons, Virginia, United States
$82k-$153k/yr OnsiteFull Time
3+ YOE3-5 years as Test/QA Engineer; Bachelor's in CS/SE; automation testing; Selenium; Java/Python; Linux; SQL/NoSQL; API testing; Agile.
Selenium, Java, Python, Linux, SQL, NoSQL, Postman, JMeter, LoadRunner
1w
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Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Experience designing, developing, and testing software; Python/C/C++; Linux; APIs/IPC; Git; debugging/integration; TS/SCI clearance.
Python, C/C++, Linux, Sockets, ZMQ, NATS, Git, Docker
1w
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Software Test Engineer Level 2
Annapolis Junction, Maryland, United States
OnsiteFull Time
14+ YOEActive TS/SCI with poly; 14+ years SWE experience; BS in Computer Science or related; 4 years' substitute experience; strong test, automation, Linux, and systems integration knowledge.
Linux, Python, CI/CD, JIRA, Git, Docker, ESB, CORBA, JBuilder, Eclipse, NOSQL, RabbitMQ, MongoDB, Google Protocol Buffers, gRPC, NoSQL
1mo
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Test Engineer / Cyber Test & Automation Engineer
Chantilly, Virginia, United States
OnsiteFull Time
Bachelor's in CS/Engineering or related field; experience in test engineering, automation, or system validation; proficiency in Python/C/C++, test automation tools; Agile/Scrum; SDLC; Linux/Unix; TS/SCI clearance or eligibility.
Python, C/C++, Selenium, Git, CI/CD, Linux
3w
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Autonomy Test and Evaluation Software Engineer
Laurel, Maryland, United States
$100k-$245k/yr OnsiteFull Time
5+ YOEBS in software engineering/CS or related field; 5+ years software development; full lifecycle; autonomous systems/robotics/simulation experience; V&V/M&S tools; strong teamwork and communication; eligible for interim Secret clearance.
Python, C++, ROS, Gazebo, Unity, Machine Learning, Data Analysis
2w
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Software Engineer 2 (Test Engineer)
Annapolis Junction, Maryland, United States
OnsiteFull Time
5+ YOE5+ years software engineering; 2 years in SIGINT/IA/IT; Bachelor's degree or higher in computer engineering or computer science; polygraph security clearance.
Behave!, SoapUI, Selenium, JUnit, JRunner, JSON, XML, Groovy, Perl, Python, Ruby, Git, SVN, CVS, REST, Cron
2mo
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Associate Electrical Software Test Engineer
Lanham, Maryland, United States
OnsiteFull Time
1+ YOEBachelor's in engineering; 1-3 years in electrical/software testing; C/C++, Python; testing tools; Git; Linux/Windows; good communication.
C/C++, Python, Git, MATLAB, Simulink, Speedgoat, dSPACE, Oscilloscopes, Logic analyzers, Multimeters, DC power supplies, Linux, Windows
2w
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Software Engineer 2 (Test Engineer)
Annapolis Junction, Maryland, United States
OnsiteFull Time
5+ YOE5+ years software engineering; 2 years in SIGINT/IA/IT; BS in computer engineering or computer science (4 years experience may substitute); active security clearance with polygraph.
REST, JSON, XML, Groovy, Perl, Python, Ruby, Java, Git, SVN, CVS, SQL, Selenium, SoapUI, JUnit, JRunner
1mo
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Software Engineer Integration & Test
Herndon or King of Prussia or Littleton or Sunnyvale
$77k-$135k/yr OnsiteFull Time
Active TS/SCI clearance; strong programming/scripting skills; experience with CI/CD and cloud; excellent communication and detail orientation.
Bash, Python, GitLab, Atlassian tools, CI/CD, AWS
1mo
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Manuel Test Engineer
Annapolis Junction, Maryland, United States
$150k-$240k/yr OnsiteFull Time
8+ YOEActive TS/SCI clearance with Polygraph; 8+ years of relevant experience; full SDLC testing; experience with formal test events; collaboration with developers; lab testing with physical equipment; strong communication.
Automated testing tools, Java, Shell, Python
1mo
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Senior Software Engineer
Waltham or Lexington or North Bethesda
$119k-$155k/yr HybridFull Time
6+ YOE6+ years in software development; full-stack experience; Python backend; React/Typescript; AWS; SQL and MongoDB; Docker/Kubernetes; strong debugging and testing.
Python, React, Typescript, HTML, CSS, AWS, SQL, MongoDB, Docker, Kubernetes
1mo
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Software Engineer, Senior
McLean, Virginia, United States
$130k-$196k/yr OnsiteFull Time
5+ YOESenior Software Engineer with 5-7 years in production software, Python/Java, data engineering, AWS, Spark, Snowflake, and ETL pipelines. Strong design and testing skills.
AWS, AWS EMR, Snowflake, Apache Spark, Java, Python, ETL/ELT
2mo
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ME00533-Security Verification Test (SVT) Software Engineer
Annapolis Junction, Maryland, United States
$160k-$235k/yr OnsiteFull Time
Active Top Secret/SCI with NSA Full Scope Polygraph; strong Java experience; multi-language skills (Java/JEE, Python, C/C++, SQL, scripting); web services and UI exposure; cryptographic tech knowledge; Windows/Linux proficiency; strong communication and independent work capability.
Java, Python, C/C++, SQL, SOAP, WSDL, PERL, PowerShell, VBS, Eclipse, Postgres, Oracle, Jenkins, JSON, XML, XSLT, Cryptography
1mo
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Software Developer – Junior (Team 01)
Washington, District of Columbia, United States
$100k-$115k/yr OnsiteFull Time
1+ YOETop-Secret clearance with SCI eligibility; Bachelor's degree or equivalent experience; 1+ year backend software development experience; knowledge of Java, JavaScript, Python, SQL; familiarity with Java Spring, Node.js, cloud platforms; Agile experience; ability to develop, test, and debug software.
Java, JavaScript, Python, SQL, Git, Jira, Jenkins, Terraform, AWS, Azure
1mo
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Software Development Engineer (US Federal)
McLean, Virginia, United States
$137k-$205k/yr HybridFull Time
8+ YOE8+ years software development experience; Python, Go, Ruby; Bachelor's in CS/Engineering or equivalent; API development; testing; OO design; mentorship; technical writing.
Python, Go, Ruby, APIs
3w
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Software Engineer (mobile)
Chantilly or McLean
HybridFull Time
Experience with Agile; development, maintenance, and testing of applications; enterprise SecDevOps tools (GitHub, Jenkins); independent testing throughout lifecycle; maintenance of existing infrastructure; development in Ruby, Java, JavaScript, TypeScript, HTML, C/Objective C, R, Python; ensure unit/integration/UAT testing and system changes; mobil...
GitHub, Jenkins, Ruby, Java, JavaScript, TypeScript, HTML, C, Objective C, R, Python, XCode, Swift, SwiftUI
1w
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Automated Test Engineer
Annapolis Junction, Maryland, United States
$134k-$241k/yr OnsiteFull Time
7+ YOESeven or more years in automated testing; BS in systems engineering, CS, cybersecurity, IS or related; cloud AWS in classified env; TS/SCI with poly required; Python scripting; experience with SVN/GIT and JIRA; strong documentation and agile experience.
Python, SVN, GIT, JIRA, Cloud (AWS)
3w
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Software Engineer, Level 3 (FORECASTED)
Fort Meade, Maryland, United States
OnsiteFull Time
Lead software development, provide technical leadership, design, develop, test, and maintain complex software; SDLC/Agile, SQL, architecture, and team leadership.
Java, Python, C, C++, SQL, Spring, Hibernate, Jenkins, CI/CD, Docker, Kubernetes, OpenShift, Kibana, Grafana, Nagios, Shell, Bash
2mo
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Software Engineer
Baltimore, Maryland, United States
$85k-$130k/yr HybridFull Time
Campbell & Company: A systematic investment manager specializing in quantitative multi-strategy portfolios.
3+ YOE3+ years in C#/.NET development; SQL Server/Oracle experience; CI/CD and testing; strong communication and problem-solving.
C#, NET, Python, ASP.NET, SQL Server, Oracle, CI/CD, Testing Frameworks
3w
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Aerospace Flight Software Engineer (cFS)
Greenbelt, Maryland, United States
OnsiteFull Time
15+ YOEDevelop, test, and integrate flight software; write cFS apps; work with C, Python, Ruby; 15+ years experience; BS in a related field.
C, Python, Ruby, COSMOS
4d
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CNO Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Proficient in C/C++, Python, and Assembly; OS internals; network programming; debugging; testing frameworks; team collaboration; willingness to lead and mentor.
C, C++, Python, Assembly, Windows, Linux, Android, iOS, Embedded, Ghidra, IDA Pro, Binary Ninja, Radare2, Git, Svn, GoogleTest, CMock, Catch2, pytest, WinDBG, gdb, lldb, adb, OllyDbg, MsBuild, CMake, make, ninja, wheel, tox, Valgrind, clang-tidy, pylint, black, Docker, Ansible, CI/CD, Atlassian, GitLab, CircleCI, Jenkins
1mo
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Senior Software Developer (Hybrid)
Annapolis Junction, Maryland, United States
HybridFull Time
9+ YOEProficiency in OOP with Python or Java (~9 years); at least one language required, with experience in the other; reverse engineering or LLM app development skills preferred; testing and RPC familiarity a plus.
Python, Java, IDA, Ghidra, Langchain, LangGraph, LangSmith, vector databases, gRPC, JUnit, Pytest, ARM, PPC
3w
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Principal Cyber Software Test Engineer
Chantilly, Virginia, United States
OnsiteFull Time
5+ YOEActive Top Secret/SCI with Poly; 5+ years' experience; bachelor's with 5y, master's with 3y, PhD with 1y, or 9y experience in lieu of a degree; strong software/hardware testing; clear communication.
Python, JavaScript, Test Automation, SmartBear TestComplete, Azure DevOps, Jira, UNIX, Linux, Windows, Virtual Machines
1w
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Software Engineer SWE2 - 26010
Hanover, Maryland, United States
OnsiteFull Time
Front-end and back-end development across JavaScript/TypeScript, React, Node.js, Rust, Python; microservices; cloud tooling; testing; data stores; messaging; and security labels.
JavaScript, TypeScript, React, Node.js, Rust, Python, Shell scripting, Kubernetes, Helm, Microservices, Service mesh, Load balancing, Terraform, Ansible, Salt, WebSockets, Grafana, InfluxDB, Elasticsearch, Redis, MySQL, Apache Superset, RabbitMQ, Kafka, Neo4j
2mo
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Cloud Software Engineer
Annapolis Junction, Maryland, United States
$135k-$216k/yr OnsiteFull Time
5+ YOEFive+ years in software development; experience in requirements analysis, installation/integration, evaluation, enhancement, maintenance, testing, and problem diagnosis; active TS/SCI with poly; Bachelor's in CS or related field; DoD 8570 IAT Level I; relevant certifications.
Java, Database technologies, Linux, Docker, Kubernetes, Python, Ansible, MapReduce (Hadoop/Hive/Pig), MongoDB, Git, Terraform, Nginx, RHEL
HiringCafe market data
Python Test Software Developer Jobs market signals in Lake Barcroft, VA, US
These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.
Open jobs
160+
Hiring companies
95
Fresh sample
58% new in 30d
Salary visibility
58% show pay
Companies appearing in this market
Booz Allen HamiltonFreddie MacLockheed MartinSystems & Technology ResearchManTechMomentum EngineeringNavstarAmentum
Work location mix in visible results
Onsite: 55Hybrid: 17Remote: 2