Python Test Software Developer Jobs in Colonial Beach, VA, US

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Software Development Engineer in Test (SDET)

Arlington, Virginia, United States

OnsiteFull Time

Zetier: Cybersecurity engineering for defense and intelligence missions.

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

16h

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16h

Software Developer in Test (SDET)

Arlington, Virginia, United States

RemoteFull Time

Syms Strategic Group: Provides IT and professional services to federal government agencies.

10+ YOEStrong programming in C#, Java, or Python; manual and automated testing; SDLC/Agile; test automation; CI/CD; security, performance, APIs experience.

Selenium, TestNG, JUnit, QTP, LoadRunner, CI/CD, Git, JIRA, Bugzilla, JMeter, Gatling, SQL, APIs

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Staff Cyber Software Test Engineer

Chantilly, Virginia, United States

$161k-$241k/yr OnsiteFull Time

Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.

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

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Python Engineer, Agentic AI

Washington or Philadelphia

$121k-$181k/yr HybridFull Time

ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.

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

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Principal Software Engineer for Integration & Test

Arlington or Dayton or Remote or Woburn

$206k-$284k/yr HybridFull Time

Systems & Technology Research: Develops advanced technology for national security and defense applications.

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

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1mo

Test Engineer

Tysons, Virginia, United States

$82k-$153k/yr OnsiteFull Time

SWIFT: Provides secure messaging services for global financial transactions.

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

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1mo

Software Engineer - Product Test Frameworks - .NET/TestStand

United States or India or Carlsbad or Tempe or Duluth or Hyderabad or Remote - Georgia or Remote - California or Remote - Arizona or Carlsbad or Tempe

$141k-$222k/yr RemoteFull Time

ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.

5+ YOEBS in Electrical Engineering or CS, 5+ yrs systems/test, TS/C#/Python, test automation, APIs, travel up to 10%.

TestStand, C#, Python, LabVIEW

2mo

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2mo

Electrical Software Test Engineer

Lanham, Maryland, United States

OnsiteFull Time

AST SpaceMobileNasdaq: ASTS: Space-based cellular broadband network connecting directly to mobile devices.

2+ YOEBachelor's in Engineering; 2+ years electrical testing and software validation; experience with environmental testing, spaceflight hardware; programming in C/C++ and Python; experience with test tools; read schematics; Git; Linux/Windows; strong communication.

Oscilloscopes, Logic analyzers, Multimeters, DC power supplies, Git, MATLAB, Simulink

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1mo

Embedded Software Developer

King George, Virginia, United States

$62k-$141k/yr OnsiteFull Time

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

2+ YOE2+ years in software development with embedded systems; C/C++ and Python; low-level development; hardware and software integration; ability to work on-site in labs and test ranges; secret clearance; bachelor’s degree.

C, C++, Python, Docker

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Software Signals Engineer

El Segundo or McLean

$69k-$158k/yr OnsiteFull Time

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

3+ YOE3+ years in signal processing/DS/software development; RF testing; Python/C/C++; Agile tools; TS/SCI; BS in CS/CE/EE/STEM

Python, C, C++, Jira, Confluence, GitHub, Linux

1mo

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1mo

Software Developer – Junior (Team 01)

Washington, District of Columbia, United States

$100k-$115k/yr OnsiteFull Time

AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.

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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1mo

Software Development Engineer (US Federal)

McLean, Virginia, United States

$137k-$205k/yr HybridFull Time

WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.

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

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Software Engineer (mobile)

Chantilly or McLean

HybridFull Time

M1 Technology: Developing mission-critical technology for the U.S. intelligence community.

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

2mo

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2mo

Security Verification Test (SVT) Software Engineer

Annapolis Junction, Maryland, United States

$70k-$190k/yr OnsiteFull Time

Belay Technologies: Provides engineering services and automation software to defense agencies.

8+ YOETS/SCI with polygraph; Bachelor's in CS or related field; 8+ years exp; strong Java; diverse tech experience; Windows/Linux; web services; cryptography basics; agile/scrum experience.

Java, Python, C/C++, SQL, SOAP, WSDL, PERL, PowerShell, VBS, Eclipse, Postgres, Oracle, Jenkins, JSON, HTML, XML, XSLT, JEE, Mongo, Tomcat, WebLogic, JBoss, Selenium, Mockito, Cucumber, FITNesse, UFT, BDD, SAFe, J2EE, XML, CANONICALIZATION

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Sonar System Software Test Engineer

Manassas, Virginia, United States

$73k-$146k/yr OnsiteFull Time

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

Tests and verifies tactical systems; follows procedures; travel up to 10%; DoD Secret clearance eligible; Linux and Windows proficiency; programming and test development experience.

Linux, Windows, Microsoft Office, DOORS, MATLAB, C, C++, Java, Python, Automated Test, Atlassian Tools

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Software Engineer, Senior

McLean, Virginia, United States

$130k-$196k/yr OnsiteFull Time

Freddie MacOTCQB: FMCC: Purchases and securitizes home mortgages for the secondary market.

5+ YOE5+ years Python experience; CS degree or equivalent; experience with Python microservices, Gradle/Jenkins/Git/Docker; AWS EMR, PySpark, Pandas; strong testing and collaboration.

Python, PySpark, Pandas, AWS EMR, S3, DynamoDB, Lambda, DataSync, EMR, SQS, Docker, Gradle, Jenkins, Git

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Automation Test Engineer (Active TS/SCI Required)

Chantilly, Virginia, United States

OnsiteFull Time

MissionOvo: Provides technology and engineering services for national security missions.

5+ YOEActive TS/SCI clearance, BS in CS/Engineering, 5+ years test automation, frameworks Selenium/Cypress/Playwright/TestNG/JUnit, Python/Java/JS/C#, Git, API testing, Agile, embedded/hardware, cloud (AWS/Azure/GCP), performance testing, ISTQB a plus.

Selenium, Cypress, Playwright, TestNG, JUnit, Python, Java, JavaScript, C#, Git, Postman, REST Assured, Jenkins, GitLab CI, Azure DevOps, JMeter, LoadRunner

1mo

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1mo

Senior Cyber Test Engineer (Onsite)

Sterling, Virginia, United States

OnsiteFull Time

Nightwing: Provides advanced cyber and intelligence solutions for national security.

3+ YOETS/SCI with CI Poly clearance; 3 years test engineering; 3 years offensive cyber operations; 3 years Python/Bash scripting; 3 years Linux/Unix; networking knowledge; strong communication and collaboration.

Python, Bash, Linux, Docker, Networking

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Automated Testing Software Engineer (mid-level)

Dahlgren, Virginia, United States

$92k-$135k/yr OnsiteFull Time

SimVentions: Provides engineering and technology services for defense customers.

5+ YOE5-8 years of professional software development and automated testing experience; on-site at Dahlgren, VA; DoD/Secret clearance required.

Python, C++, Git, GitLab, Docker, Jenkins, RedHat Linux, Rust, Automated testing frameworks

2mo

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2mo

Associate Software Engineer

Arlington or Mount Laurel

$72k-$114k/yr OnsiteMultiple Commitments Available

Innovative Defense Technologies: Develops automated software integration and testing solutions for defense.

0+ YOE0-1 years of experience; BS in CS/CE/EE/Physics/Math or equivalent; ability to travel up to 25%; strong Java, JavaScript, Python or C++ skills; distributed systems knowledge; SDLC and OO programming familiarity; experience with Git/SVN; testing and configuration management.

Java, C++, Python, JavaScript, Linux, Git, SVN, Docker, Kubernetes, Openshift, React, Angular

2mo

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2mo

O-RAN DU Test Engineer

Arlington, Virginia, United States

HybridFull Time

DeepSig: Developing AI software for wireless signal processing and sensing.

6+ YOEDesign, develop, and execute tests for O-RAN DU software and hardware; ensure conformance, interoperability, performance, and reliability; automate tests and support CI/CD.

Python, Shell, Kubernetes, Docker, Linux, CI/CD tools

1mo

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1mo

Principal Software I&T Engineer (Contract)

Arlington or Denver or Houston or Merritt Island

RemoteContract

Airbus U.S. Space & DefenseEuronext Paris: AIR: Provides satellite, helicopter, and cybersecurity solutions for U.S. defense.

15+ YOEEmbedded software, testing, and flight software development; 15+ years experience with B.S. or 12+ with M.S.; US citizenship; ability to obtain clearance; periodic travel.

C/C++, TCL, Python, Embedded software development and testing, RTOS, Device driver development, GNC algorithms, Software safety assurance, Test scripting, Simulators, HIL

1mo

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1mo

1644 - Software Integration Engineer

Patuxent River Naval Air Station, Maryland, United States

$90k-$120k/yr OnsiteFull Time

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

2+ YOE2-5 years experience in installing, testing, configuring, upgrading, and supporting COTS/GOTS; SRE familiarity; Linux; IaC; containerization; Git; scripting; US citizenship; active Secret clearance or higher.

RHEL, JAVA, Python, Bash Scripting, Docker, Hypervisors

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Software Architect

McLean, Virginia, United States

OnsiteFull Time

Steampunk: Design-led federal technology consulting and innovation services firm.

8+ YOE8-10 years in software development with DevSecOps experience; design, develop, deploy microservices; strong CI/CD and test automation.

AWS, Kubernetes, Docker, CI/CD, Git, Jenkins, GitHub, GitLab, CircleCI, TravisCI, Terraform, Java, Python

2mo

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2mo

Perception Engineer

Clarksburg, Maryland, United States

$130k-$180k/yr OnsiteFull Time

Forterra: Develops autonomous driving systems for defense and industrial applications.

2+ YOEDevelop and maintain C++/Python perception software; collaborate across autonomy teams; travel to test sites.

C++, Python, Linux, Docker, Git, CI/CD, Bash, Automation

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1mo

Lead AI Full Stack Software Engineer – Investments Technology

Washington, District of Columbia, United States

$145k-$309k/yr HybridFull Time

T. Rowe PriceNASDAQ: TROW: Provides global investment management and retirement planning services.

8+ YOE8+ years in OO languages; cloud-native AWS/Azure; leadership; strong problem-solving; stakeholder communication; automated testing and CD.

AWS, Azure, Docker, Kubernetes, Java, Python, JavaScript, LLM, agent frameworks, Retrieval augmented generation, OpenAI Codex, Bedrock, Kiro, MCP servers

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1mo

Software QA Lead

Arlington, Virginia, United States

$145k-$185k/yr OnsiteFull Time

Sabre Systems: Provides engineering and IT solutions for defense customers.

4+ YOE2+ MgmtBachelor’s degree; 4+ years software engineering; 2+ years leadership in QA; diverse testing methodologies; SDLC knowledge; test automation; CI/CD; strong communication.

Python, pytest, C++, GoogleTest, Selenium, CI/CD, DevOps tools

1mo

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1mo

Modernization Engineer (Senior)

Manassas, Virginia, United States

OnsiteFull Time

Spear AI: Develops AI software and sensors for maritime defense operations.

Senior software engineer with Rust, C/C++, Docker/Kubernetes, Kafka/Redpanda, Terraform/Pulumi, Python; strong testing, linting, and CI/CD experience.

Rust, C/C++, Docker, Kubernetes, Kafka/Redpanda, Terraform, Pulumi, Python, GitHub Actions, Protobuf

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Software Quality Assurance Lead

Arlington, Virginia, United States

$130k-$217k/yr OnsiteFull Time

American Systems: Providing engineering and IT solutions to federal government agencies.

4+ YOE2+ MgmtSenior QA lead with 4+ years software engineering/testing, 2+ years leadership; strong testing methodologies; SDLC/DevOps; TS/SCI clearance eligibility.

Python, pytest, C++, GoogleTest, Selenium, CI/CD, DevOps

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Principal Engineer - Agentic AI Applications

Washington, District of Columbia, United States

$168k-$230k/yr HybridFull Time

SerkoNZX: SKO: Provides online corporate travel and expense management software.

12+ YOE12+ years software engineering; 4+ years in technical leadership; production experience with LLM-powered or agentic systems; Python backend expertise; strong observability, architecture, and testing skills

Python, LangGraph, AutoGen, CrewAI, TypeScript, Node.js, RAG pipelines, vector databases, tool-calling APIs, multi-step reasoning

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Senior Appian QA Automation Engineer

McLean, Virginia, United States

$137k-$165k/yr RemoteFull Time

Groundswell: Providing technology integration and digital modernization for federal agencies.

5+ YOE5+ years QA automation; Appian or low-code testing experience; Python automation; CI/CD with GitLab/Jenkins/Azure DevOps; API and performance testing; multi-project QA leadership; able to obtain Secret clearance; remote with East Coast hours.

Python, GitLab, Jenkins, Azure DevOps, Locust, JMeter, Selenium, Playwright, Appian

2mo

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2mo

Staff Engineer, DevOps (R4666)

San Diego or Dallas or Boston or Washington or San Francisco or United States

$150k-$220k/yr OnsiteFull Time

Shield AI: Develops autonomous AI-powered aircraft and pilot software for defense.

7+ YOELead DevOps across CI/CD, automation; 7+ years experience; strong CI/CD tools; containerization; scripting; test integration; reliability at scale.

Azure DevOps, Jenkins, GitHub Actions, Docker, Kubernetes, Python, Bash, PowerShell, Terraform, Ansible, Grafana, Prometheus

3mo

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3mo

Frontend Lead Engineer

Richmond or Arlington

OnsiteFull Time

Koalafi: Provides lease-to-own and loan financing for non-prime consumers.

6+ YOE6+ years of front-end experience with modern web technologies (React, Vue, Angular); four-year CS/engineering degree; experience with REST APIs, AWS, and testing; in-person location requirement to Richmond, VA or Arlington, VA.

React, Vue, Angular, Golang, Java, Node, Python, Cypress, Playwright, AWS, Kubernetes, Postgres

3mo

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3mo

Eng Sr Prin II - Test

Annapolis Junction, Maryland, United States

$150k-$254k/yr OnsiteFull Time

BAE SystemsLondon Stock Exchange: BA: Provides global defense, aerospace, and information security solutions.

8+ YOEMust have Java experience; strong JS/web services; cryptography basics; Windows/Linux proficiency; able to work independently and in Agile teams.

Java, Python, C/C++, SQL, SOAP, WSDL, PERL, PowerShell, VBS, Eclipse, Postgres, Oracle, Jenkins, Web Services, JSON, HTML, XML, XSLT, cryptography, Windows, Linux, JEE, Tomcat, WebLogic, JBoss, Selenium, BDD, SAFe

1mo

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1mo

AI Full-Stack Engineer

Tysons, Virginia, United States

$160k/yr OnsiteFull Time

LMI: Provides technology and management consulting services to federal agencies.

Experience delivering modern full-stack apps; backend/API design; frontend with React/Next.js; AI/LLM integration; cloud deployments; CI/CD and testing.

React, Next.js, Node.js, Python, Java, APIs, AWS, Azure, GCP, Docker, Kubernetes, LangChain, LlamaIndex, Semantic Kernel, OpenAI Codex, Anthropic Claude Code

1mo

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1mo

Quality Assurance Engineer (Sweep)

Arlington, Virginia, United States

HybridFull Time

IntraFi: Provides deposit placement and liquidity services to financial institutions.

5+ YOE5+ years in software QA within Agile teams; strong automation experience; Java, JavaScript, Python; Playwright/Selenium; API testing; SQL/PLSQL; AWS; CI/CD; QA leadership and offshore collaboration.

Playwright, Selenium, Geb, Groovy, Cucumber, JavaScript, WebDriverIO, Postman, REST-assured, Java, Python, Angular, PL/SQL, Oracle, Jenkins, Splunk, JIRA, Bitbucket, Confluence, AWS

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Automated Tester

Fairfax, Virginia, United States

OnsiteFull Time

Prometheus Federal Services: Providing strategic consulting and program management for federal health agencies.

5+ YOE5+ years software testing, 2+ years automated testing; Selenium/Cypress/Playwright; QA/SDLC/Agile; CI/CD; Git; languages: JavaScript/Python/Java/C#

Selenium, Cypress, Playwright, Azure DevOps, Git, GitHub Actions, Jenkins, CI/CD, JavaScript, Python, Java, C#

3mo

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3mo

Security Product Reverse Engineer (TS/SCI w POLY)

McLean, Virginia, United States

$100k-$150k/yr OnsiteFull Time

Falls Technology: Provides software engineering and cybersecurity solutions for government agencies.

3+ YOEBachelor's degree or equivalent in CS/Engineering; 3+ years software development; proficient with Git; OS internals knowledge; 3+ years C/C++/Python; 3+ years IDA Pro/Ghidra; 3+ years code analysis and auditing; 3+ years vulnerability research; 5+ years CNE development/testing; ability to obtain security clearances.

Git, IDA Pro, Ghidra, C, C++, Python, Windows, Linux, BSD Unix, MacOS, Android

1mo

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1mo

Cyber Operational Systems Engineer

Chantilly, Virginia, United States

$132k-$290k/yr OnsiteFull Time

CACINYSE: CACI: Provides technology and expertise for national security and government missions.

15+ YOETS/SCI with poly; BS in Computer Science/Engineering; 15+ years in technical field; 5+ years scripting (Linux); server-side programming (Perl/Python/Bash/Ruby); SQL (MySQL/PostgreSQL); full lifecycle software dev; automated testing; Linux server config.

Perl, Python, Bash, Ruby, Linux, MySQL, PostgreSQL