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174 senior software test engineer jobs at 79 companies in Denver, CO

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Senior Test Software Engineer
Longmont, Colorado, United States
$110k-$135k/yr OnsiteFull Time
Ursa Major
Ursa Major: Designs and manufactures rocket engines and aerospace propulsion systems.
5+ YOEBachelor's degree in a technical discipline, 5+ years developing automated test systems, programming proficiency, instrumentation interfaces, test automation, version control, U.S. Person status, and clearance eligibility.
C#, Python, C++, LabVIEW, VISA, GPIB, USB, Ethernet/LXI, Serial, PXI, Git, Azure DevOps, NI VISA, SCPI, NI TestStand, SPI, I²C, UART, CAN, Ethernet, RS-422/485, MATLAB, SQL
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1mo
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Senior Software Test Automation Engineer
Niwot, Colorado, United States
$100k-$140k/yr HybridFull Time
Particle Measuring Systems
Particle Measuring Systems: Manufactures particle counters and cleanroom contamination monitoring systems.
10+ YOEBS in CS or Software Engineering, 10+ years automation test engineering experience, Ranorex preferred, Java/Python and IntelliJ experience, CI/CD and test automation expertise, strong communication and problem-solving.
Ranorex, Java, Python, IntelliJ IDEA, Jira, Confluence, CI/CD
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1mo
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Ground Software Integration & Test Engineer
Aurora, Colorado, United States
$128k-$174k/yr OnsiteFull Time
Four Sea Group
Four Sea Group: Technical mission support and software engineering for aerospace.
6+ YOE6+ years in software integration, test, or verification; Bachelor’s in engineering/CS or equivalent experience; active TS/SCI clearance; Python scripting; automated test development and strong troubleshooting skills.
Python, MATLAB, C, C++, Behavior Driven Development (BDD), Robot Framework, Atlassian Suite, Bitbucket, Systems Tool Kit (STK), Docker, Kubernetes, GitLab, Model-Based Systems Engineering (MBSE)
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1mo
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Senior Software Engineer – Test Automation & Infrastructure
Westminster, Colorado, United States
$133k-$160k/yr OnsiteFull Time
CesiumAstro
CesiumAstro: Develops phased array communication systems for satellites and aircraft.
5+ YOEBachelor's in CS/SE or equivalent, 5+ years software/test automation experience, hardware/instrumentation interfacing, proficiency with Python and C/C++, Git and CI/CD, experience with lab instrumentation and test frameworks.
Python, C, C++, Git, CI/CD, automated test frameworks, signal generators, spectrum analyzers, power supplies, network equipment, SDLC
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2w
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Senior Engineer - Advanced Test Software
Westminster, Colorado, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
4+ YOEBS in engineering or related plus 4+ years experience. Experience with Python and Ruby, hardware integration, instrumentation protocols, containerization, CI/CD, CI tools, and software lifecycle. Must be eligible for Top Secret/SCI.
Python, Ruby, Docker, Podman, OpenC3 COSMOS, Ruby on Rails, Knockout, Vue, NodeJS, JavaScript, Keycloak, Redis, Traefix, Minio, Linux, Windows, BASH, PowerShell, LabVIEW, Veristand, CI/CD
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1w
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Staff / Senior Staff Software Test Engineer
Boulder, Colorado, United States
$102k-$157k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
3+ YOEBachelor's degree in physical sciences, mathematics, engineering, or computer science; 3 years of software test engineering experience; ability to obtain and maintain a DoD security clearance; U.S. citizenship required.
Python, Model-Based Systems Engineering (MBSE)
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1mo
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Software Test Lead
Golden, Colorado, United States
$105k-$145k/yr OnsiteFull Time
Lunar Outpost
Lunar Outpost: Develops autonomous robotic systems and rovers for lunar exploration.
5+ YOE2+ MgmtBachelor's in CS/Aerospace or related, 5+ years software testing experience (2+ years leadership), embedded/real-time testing experience, proficiency with test tools/automation, strong communication and systems engineering skills, U.S. Person.
Hardware-in-the-loop (HIL), cFS, VxWorks, CI/CD
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1mo
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Sr. Software Test Engineer (Contingent)
Aurora, Colorado, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEActive transferable TS/SCI clearance and U.S. citizenship, 5+ years relevant experience (or 3+ with advanced degree), experience with automated test frameworks, Agile/CI workflows, and validating functional/performance/security requirements.
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3mo
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Engineer Principal - Software - Payload Test
Broomfield, Colorado, United States
$118k-$201k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
6+ YOEBachelor's in engineering or related plus 6+ years experience, active TS/SCI clearance, strong software engineering skills (Windows, OOP), coding and test experience; Ruby, Python, RDBMS, LabVIEW desirable; agile, CI, unit testing, MS Office proficiency.
Ruby, Python, RDBMS, LabVIEW, Microsoft Office, Windows
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1w
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Senior Principal Cyber Software Test Engineer (TG)
Annapolis Junction or San Antonio or Aurora or Cary
$123k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
8+ YOEActive TS/SCI with Polygraph, 8+ years relevant experience (or 12+ with HS), expertise in test & evaluation, modeling and simulation, statistical analysis, and leadership for T&E tasks.
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1w
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Senior Principal Cyber Software Test Engineer (TG)
Annapolis Junction or San Antonio or Aurora or Cary
$123k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
8+ YOEActive TS/SCI with Polygraph, STEM degree preferred or HS+experience, 8+ years technical experience (or 12+ with HS), test & evaluation and modeling/simulation experience, strong analysis and communication skills.
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1mo
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Test Engineer III – Motion Control, Honeybee Robotics, EGSE & Test Software
Longmont, Colorado, United States
$111k-$155k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
5+ YOEBachelor's in engineering, 5+ years developing EGSE/ATE and test software, proficiency with Python/LabVIEW/C#/MATLAB, experience with data acquisition and environmental testing; U.S. citizen/permanent resident/refugee/asylee required.
Electrical Ground Support Equipment (EGSE), Automated Test Equipment (ATE), Python, LabVIEW, C#, MATLAB, Git, DOORS, Jama, Vector Network Analysis (VNA), motor controllers, load cells, torque sensors, encoders, thermocouples, accelerometers, multi-channel data acquisition systems
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1mo
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Software Systems Testing Engineer Sr
Littleton, Colorado, United States
$93k-$164k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Senior software test engineer for flight software qualification with strong embedded software V&V, system integration, Python/C++/C automation, HIL test benches, CI/CD, telemetry analysis, and ability to obtain Interim Top Secret clearance (US citizenship required).
Python, C++, C, Hardware-in-the-Loop (HIL), dSPACE, National Instruments, Speedgoat, MATLAB, Simulink, STK, CI/CD, Oscilloscope, Digital Multimeter, Logic Analyzer, Protocol Analyzer, Agile Scrum
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1mo
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Test Automation Software Engineer
Warrenton or Augusta or Centennial or McLean
$150k-$200k/yr OnsiteFull Time
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
5+ YOEU.S. citizen with active TS/SCI, Bachelor's in CS/IS/SE, minimum 5 years relevant experience, strong problem-solving, attention to detail, and excellent communication.
CI/CD
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1mo
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Senior Software Engineer
Denver, Colorado, United States
$120k-$150k/yr HybridFull Time
Litera
Litera: AI-powered document and workflow software for legal professionals.
Proven professional software development experience with Clojure, solid SQL/PostgreSQL skills, RESTful API design, SaaS architecture knowledge, testing and engineering best practices, and strong collaboration and communication.
Clojure, ClojureScript, SQL, PostgreSQL, RESTful APIs, AWS, Docker, RabbitMQ, ElasticSearch
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2w
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Senior Software Engineer
Chicago or Peoria or Irving or Dallas or Denver
$113k-$183k/yr OnsiteFull Time
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction and mining equipment, engines, and gas turbines.
Proven Java/Spring Boot software engineering experience, cloud deployment (AWS/Azure), SQL/ORM, CI/CD and automated testing, microservices, containerization, and mentoring experience; bachelor's degree preferred.
Java, Spring Boot, Hibernate, JPA, Spring Data, SQL, Snowflake, Playwright, Docker, Kubernetes, React, Angular, AWS, Azure
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1mo
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Senior Software Engineer
Boulder or Austin
$140k-$185k/yr HybridFull Time
Atom Computing: Building scalable quantum computers using arrays of neutral atoms.
5+ YOEBachelor's degree in CS/CE or related, 5+ years software engineering experience, proficiency with Python and SQL, Linux and Git experience, familiarity with automated testing and CI/CD practices, willingness to learn atomic/quantum concepts.
Python, Rust, TypeScript, React, SQL, Linux, Git, Terraform, Azure, AWS, GCP, C++
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1w
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Test Engineer
Denver, Colorado, United States
$60k-$135k/yr OnsiteFull Time
Wipro
WiproNYSE: WIT: Global technology services and consulting for digital transformation.
5+ YOERequires 5–8 years of experience and Fullstack Java Enterprise skills. Responsibilities include software design, coding, automated testing, troubleshooting, quality assurance, documentation, reporting, and client collaboration.
Fullstack Java Enterprise
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3mo
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Senior Airborne Platform Automation Test Engineer
Broomfield, Colorado, United States
$108k-$135k/yr OnsiteFull Time
Gogo
GogoNASDAQ: GOGO: Provides in-flight broadband and entertainment for business aircraft.
4+ YOE4-7 years in software/firmware/system testing; strong QA automation; Python 3; Linux; TCP/IP networking; test planning and regression testing.
Python 3, Linux, Linux OS, Git, Jenkins, Docker, TCP/IP, UDP
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1mo
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Senior Software Engineer
Denver or United States
$120k-$160k/yr HybridFull Time
DHI Group
DHI GroupNYSE: DHX: Operates specialized career marketplaces and talent acquisition software platforms.
Experience building production-grade applications with Node.js and TypeScript, REST/GraphQL services, React/Next.js, AWS and container deployments; automated testing and AI-native workflows; senior technical leadership and mentoring.
Node.js, TypeScript, RESTful, GraphQL, React, Next.js, AWS, Docker, Fargate, Kubernetes, Playwright, LiteLLM, Python, Java, PostgreSQL, SNS, SQS, Lambda
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