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Python Test Software Developer Jobs in Gainesville, VA, US
120+ python test software developer jobs from 78 companies hiring in Gainesville, VA, US.
3w
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Device Management DevOps Software Engineer
Carlsbad or Germantown or Duluth or Tempe or Englewood or Seattle
$117k-$185k/yr HybridFull Time
3+ YOE3-5 years software engineering; strong problem-solving; clean, maintainable code; excellent communication; agile DevOps; RESTful API design; CI/CD; automated testing.
Python, Java, Clojure, Kubernetes, Docker, AWS, GCP, Azure, REST, CI/CD, NoSQL, SQL
1mo
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Principal Software I&T Engineer (Contract)
Arlington or Denver or Houston or Merritt Island
RemoteContract
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
2w
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Software Engineer (Journeymen - SME Level)
Bethesda, Maryland, United States
OnsiteFull Time
6+ YOEAgile DevOps focus; Java, Python, cloud (AWS/GCP/Azure); JUnit/Katalon; TS/SCI with Full Scope Poly; 6+ years experience (high school) or advanced degrees; strong testing and automation.
Java, Spring, Hibernate, JUnit, Katalon, AWS, Google Cloud, Azure, GitHub, Jenkins, Bash, Jira, Confluence
2mo
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Security Verification Test (SVT) Software Engineer - Mid -Senior Level - FULLY CLEARED with POLYGRAPH REQUIRED
Annapolis Junction or Fort Meade
$200k-$235k/yr OnsiteFull Time
14+ YOEMust be US citizen with TS/SCI clearance and polygraph; 14+ years experience; bachelor’s in engineering; strong Java, Python, C++, SQL; web services; able to work independently and in a team.
Java, Python, C++, SQL, Oracle, MongoDB, Jenkins, Web Services, JSON, XML, PowerShell
2w
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Cloud Software Engineer CSWE3 - 27154
Hanover, Maryland, United States
OnsiteFull Time
Experience with front-end (Javascript/React) and back-end (Node.js, Python, Rust); microservices (Kubernetes, Helm); cloud migration; databases (MySQL, Redis, Neo4j); messaging (RabbitMQ/Kafka); testing (Jest); and related devops tools.
Kubernetes, Helm, Terraform, Ansible/Salt, Grafana, InfluxDB, Elasticsearch, Redis, MySQL, Neo4j, RabbitMQ, Kafka, NiFi, Superset, React, Javascript, Typescript, Node.js, Python, Rust, Shell, WebSockets, JBLOCKS, CASPORT, CAMKEY, LAC, COI
1d
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Software Quality Assurance Engineer
Chantilly, Virginia, United States
$132k-$290k/yr OnsiteFull Time
7+ YOETS/SCI with poly, 7+ years QA engineering, automated testing, Windows/Linux, test scripts, agile
Selenium, Jira, Confluence, Python, Java, test automation framework
1mo
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Software Developer, Journeyman
Herndon, Virginia, United States
$80k-$128k/yr OnsiteFull Time
2+ YOESoftware development experience with hands-on coding, testing, and debugging; CI/CD pipelines; Git; web/backend frameworks; RMF/ATO considerations (desired).
Git, CI/CD, Containerization, Cloud services, PowerShell, Python
1w
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Junior/Mid Full Stack Software Engineer
Bethesda, Maryland, United States
RemoteFull Time
1+ YOE1–4 years experience; strong Python; React/Next.js; APIs (GraphQL/REST); Docker; Linux; authentication; automated testing; full-stack exposure.
Python, React, Next.js, GraphQL, REST, Docker, Linux, Selenium, Testing frameworks
1w
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Software Engineer - Core Platform
Ashburn, Virginia, United States
$110k-$130k/yr RemoteFull Time
4+ YOE4+ years in software development; strong Java expertise; experience with SQL/NoSQL; AWS, Spark, Snowflake, DynamoDB; Git and CI/CD; proficient in Scala, Python or R; adept at data processing and testing.
Java, Scala, Python, R, SQL, NoSQL, MySQL, AWS, Spark, Snowflake, DynamoDB, CartoDB, Git, GitHub Actions, REST, JSON, XML
3w
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Software Architect
McLean, Virginia, United States
OnsiteFull Time
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
1w
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Principal Integration & Test Engineer
Chantilly, Virginia, United States
OnsiteFull Time
9+ YOEBachelor's in EE/CE/CS or related field; 9+ years in embedded systems integration and test; strong hardware/software debugging; experience with avionics or aerospace hardware.
C/C++, Python, FPGA, Lab instrumentation
3mo
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Eng Sr Prin II - Test
Annapolis Junction, Maryland, United States
$150k-$254k/yr OnsiteFull Time
8+ YOEMust have strong Java experience; multi-language experience (Java/JEE, Python, C/C++); web services, databases, JSON/XML; cryptography basics; Windows/Linux; strong SDLC practices.
Java, Python, C/C++, SQL, SOAP, WSDL, WADL, Perl, PowerShell, VBScript, Eclipse, PostgreSQL, Oracle, Jenkins, JSON, HTML, XML, XSLT, Cryptography, Windows, Linux, Web Services
3mo
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Security Verification Test (SVT) Engineer - TS/SCI w/ Polygraph
Annapolis Junction, Maryland, United States
$150k-$220k/yr OnsiteFull Time
8+ YOEExperienced software engineer with Java and multiple languages; strong web services, cryptography knowledge, and agile/DevOps experience.
Java, Python, C/C++, SQL, SOAP, WSDL, XML, JSON, Jenkins, Eclipse, Postgres, Oracle, PowerShell, JUnit
2mo
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Perception Engineer
Clarksburg, Maryland, United States
$130k-$180k/yr OnsiteFull Time
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
2w
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Test Engineering Leader - Evinova
Gaithersburg, Maryland, United States
$166k-$217k/yr HybridFull Time
10+ YOE10+ years in software test engineering; lead testing strategy; automation focus; AI/ML testing preferred; GxP experience a plus; strong REST API, CI/CD, and data validation.
Playwright, Selenium, Cypress, Python, REST API testing, PostgreSQL, MongoDB
3w
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Senior Software Development Engineer L4
Bowie or Bowie Government Office
$85k-$170k/yr OnsiteFull Time
5+ YOE5+ years software development; strong C# and MS SQL; testing/architecture experience; AWS interest; independent contributor; strong collaboration.
C#, MS SQL Server, Python, Lua, AWS
1mo
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Software Tester / QA Engineer (Web & API Testing)
Chantilly, Virginia, United States
$160k-$190k/yr OnsiteFull Time
3+ YOE3+ years in software testing; strong web and REST API testing; API tools; test automation; JavaScript/Python/Java; Agile/Scrum.
Postman, Swagger, Cypress, Git, JavaScript, Python, Java, JSON
2mo
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Security Verification Test SWE, Senior
Annapolis Junction, Maryland, United States
$100k-$275k/yr OnsiteFull Time
8+ YOEActive TS/SCI clearance with Polygraph; strong Java experience; multiple languages (Java/JEE, Python, C/C++, SQL, scripting); web services; Windows/Linux development; test automation; strong communication and independent work ethic.
Java, Python, C/C++, SQL, SOAP, WSDL, PERL, PowerShell, Eclipse, PostgreSQL, Oracle, Jenkins, JSON, HTML, XML, XSLT, JEE, Tomcat, WebLogic, JBoss, Mockito, Cucumber, Selenium, BDD, SAFe, J2EE, MongoDB
2mo
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Software Tester
Chantilly, Virginia, United States
OnsiteFull Time
8+ YOEActive TS/SCI with a polygraph; associate or bachelor in CS/cyber security/engineering/mathematics; 8 years of experience; automated test scripting in Python/Bash/Java/JavaScript; functional and regression testing; UNIX/Windows; JIRA; customer and stakeholder interaction.
Python, Bash, Java, JavaScript, Selenium, JIRA, Unix, Windows
1w
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Cleared Embedded Developer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Embedded software design, development, testing; TS/SCI with Full Scope Polygraph required.
C/C++, Python, RTOS, VxWorks, uC/OS, Windows, Linux
1mo
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Lead AI Full Stack Software Engineer – Investments Technology
Washington, District of Columbia, United States
$145k-$309k/yr HybridFull Time
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
1mo
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Software QA Lead
Arlington, Virginia, United States
$145k-$185k/yr OnsiteFull Time
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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Modernization Engineer (Senior)
Manassas, Virginia, United States
OnsiteFull Time
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
2w
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Software Quality Assurance Lead
Arlington, Virginia, United States
$130k-$217k/yr OnsiteFull Time
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
4w
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Principal Engineer - Agentic AI Applications
Washington, District of Columbia, United States
$168k-$230k/yr HybridFull Time
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
1mo
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UI/UX Front-End Development Engineer
Bethesda, Maryland, United States
$125k-$220k/yr HybridFull Time
4+ YOEDevelop web apps using ReactJS and Python; implement UIs, perform testing; work in Agile; TS/SCI clearance required.
ReactJS, Python, HTML, CSS, JavaScript, Docker, Podman, HTTP, JSON, Elasticsearch, NoSQL
2mo
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Sr. Web Application Developer #1703183
Chantilly, Virginia, United States
$121k-$135k/yr OnsiteFull Time
8+ YOEDesign, develop, test web apps; US citizenship; active TS clearance with SCI access and CI polygraph; onsite Chantilly, VA; 8+ years web development; BS in CS/Software Engineering; SAFe and agile experience; 508 compliance; modern frontend and backend tech; cloud and DevSecOps.
Angular, React, .NET C#, Python, Node.js, JavaScript, TypeScript, HTML5, CSS3, Bootstrap, MySQL, PostgreSQL, Microsoft SQL, Elasticsearch, RabbitMQ, Redis, Docker, Kubernetes, AWS GovCloud, SC2S, C2S, DevSecOps
2w
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Senior Appian QA Automation Engineer
McLean, Virginia, United States
$137k-$165k/yr RemoteFull Time
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
1mo
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Jr. Data Science Engineer
Rockville, Maryland, United States
$80k-$90k/yr RemoteFull Time
0+ YOEBachelor’s degree (or currently pursuing) in CS, data science, bioinformatics, statistics, engineering, or related field; experience or coursework in JavaScript/TypeScript and/or Python; familiarity with full-stack concepts; Node.js and Angular; RESTful APIs; Git; Agile/SCRUM; basic testing/debugging.
Node.js, Angular, JavaScript, TypeScript, Python, REST, Git, Agile, Testing frameworks
3w
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Senior Application Developer (Java/Angular)
Ashburn, Virginia, United States
HybridFull Time
7+ YOEBachelor’s degree and 7+ years in Java applications with Spring, Agile, Jira; Oracle/PostgreSQL; unit tests; strong communication; hybrid Ashburn onsite.
Java, Angular, Spring, Spring Boot, AWS, Jira, Git, Bamboo, Jenkins, SonarQube, Docker, Kubernetes, Hibernate, MyBatis, JMS, Python, Kafka, Linux
2mo
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Staff Engineer, DevOps (R4666)
San Diego or Dallas or Boston or Washington or San Francisco or United States
$150k-$220k/yr OnsiteFull Time
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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Frontend Lead Engineer
Richmond or Arlington
OnsiteFull Time
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
1mo
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AI Full-Stack Engineer
Tysons, Virginia, United States
$160k/yr OnsiteFull Time
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
4w
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SIMULATION & DIAGNOSTICS DEVELOPER
Greenbelt, Maryland, United States
$170k-$190k/yr HybridFull Time
12+ YOEUS citizenship; extensive software development lifecycle experience; embedded software; TCP/UDP networking; DTN protocols; Linux/VxWorks RTOS; C/C++/Java; testing and documentation; familiarity with Git/JIRA/GitHub.
C, C++, Java, XML, JSON, Linux, RTOS (VxWorks), Git, JIRA, GitHub, Python, TCP, UDP, DTN, NASA standards
1mo
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Quality Assurance Engineer (Sweep)
Arlington, Virginia, United States
HybridFull Time
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
2w
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Automated Tester
Fairfax, Virginia, United States
OnsiteFull Time
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#
2mo
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Baseband Reverse Engineer (In office 5x/week)
Sterling, Virginia, United States
OnsiteFull Time
Citizen with current Top Secret clearance; reverse engineering of RF/SDR; experience with SDR software and embedded systems; knowledge of RF protocols and testing; in-office work in Sterling, VA.
C, Python, C++, Git, Embedded Operating Systems, Ghidra, IDA Pro, GNU Radio, RFID, WiFi, Cellular, Bluetooth
4w
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Audio Visual Programmer (Associate, Mid-Level or Senior)
Herndon or United States
$93k-$192k/yr OnsiteFull Time
2+ YOEActive TS/SCI w/ Counterintelligence Polygraph; Crestron programming; C/C++, Java, JavaScript, Python, Perl, Visual Basic; AV system integration and testing; network programming.
Crestron, C++, Java, JavaScript, Perl, Python, Visual Basic, C#, HTML
1mo
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Automation Tester
Columbia, Maryland, United States
$92k-$110k/yr HybridMultiple Commitments Available
7+ YOE7+ years in automation testing with Selenium/TestNG/JUnit/Cypress; API, performance, and security testing; Agile; CI/CD; SDLC knowledge.
Selenium, TestNG, JUnit, Cypress, Postman, RestAssured, SoapUI, Jenkins, GitLab CI/CD, Azure DevOps, Python, Java, JavaScript, C#, JUnit, LoadRunner, JMeter
1d
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Testing Lead/Architect
Ashburn, Virginia, United States
HybridFull Time
10+ YOE4+ MgmtUS citizen; bachelor’s in CS/Engineering; 10+ years IT experience; expert in automation frameworks; Kubernetes, Helm, Podman; AWS; CI/CD; Python/Node.js/Go; strong communication; onsite 4 days/week in Ashburn, VA.
Kubernetes, Helm, Podman, AWS, Python, Node.js, Go, Playwright, Selenium
HiringCafe market data
Python Test Software Developer Jobs market signals in Gainesville, 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
120+
Hiring companies
78
Fresh sample
43% new in 30d
Salary visibility
61% show pay
Companies appearing in this market
CACIFalls TechnologySpear AISteampunkAbsolute Business Solutions CorpAirbus U.S. Space & DefenseAmerican SystemsAstraZeneca
Work location mix in visible results
Onsite: 29Hybrid: 10Remote: 5