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Software Development Engineer In Test Jobs in Littleton, CO

Centil

Software Test Engineer

Lafayette, CO · On-site

The Software Test Engineer will design, develop, and execute test plans to ensure the quality and ... Development (CI/CD) pipeline • Identify and troubleshoot test failures in the pipeline and ...

OASYS

Software Engineer

Littleton, CO · Hybrid

In this role, you will support the software engineering lifecycle following the program Software ... development including SW design, architecture and integration & test Desired Skills: -Real Time ...

OASYS, INC.

Software Engineer

Littleton, CO · On-site

$75K - $95K/yr

In this role, you will support the software engineering lifecycle following the program Software ... development including SW design, architecture and integration & test Desired Skills: -Real Time ...

OASYS, INC.

Software Engineer

Littleton, CO · On-site

$75K - $95K/yr

In this role, you will support the software engineering lifecycle following the program Software ... development including SW design, architecture and integration & test Desired Skills: -Real Time ...

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Software Development Engineer In Test information

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How much do software development engineer in test jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for software development engineer in test in Littleton, CO is $55.27, according to ZipRecruiter salary data. Most workers in this role earn between $48.51 and $62.60 per hour, depending on experience, location, and employer.

What is the difference between Software Development Engineer In Test vs Software Engineer?

AspectSoftware Development Engineer In TestSoftware Engineer
Primary FocusDesigning and developing automated tests, ensuring software qualityDeveloping software applications and features
Skills & CertificationsProgramming, testing frameworks, automation toolsProgramming, software design, system architecture
Work EnvironmentQuality assurance teams, development teams, testing labsDevelopment teams, product teams, engineering environments
Industry UsageTech companies, software firms, QA departmentsTech companies, startups, software product companies

While both roles require strong programming skills, Software Development Engineer In Test focuses on automation and testing to ensure software quality, whereas Software Engineers primarily develop new features and applications. Both roles are integral to software development but serve different aspects of the product lifecycle.

How does a software development engineer in test typically collaborate with developers and QA teams during the software development lifecycle?

As an SDET, you'll work closely with both software developers and quality assurance teams throughout the development process. Your role involves participating in design and code reviews to ensure testability, creating automated test frameworks, and writing test cases alongside developers. You'll also help identify bugs early, contribute to continuous integration pipelines, and facilitate communication between development and QA to ensure high-quality releases. This collaborative environment allows you to bridge the gap between coding and testing, making you a key player in delivering reliable software.

What is a software development engineer in test?

A Software Development Engineer In Test (SDET) is a professional who combines software development skills with expertise in testing to ensure the quality of software products. SDETs design, develop, and maintain automated test frameworks, write test scripts, and work closely with developers to identify and resolve defects early in the software development lifecycle. They play a critical role in integrating testing into the development process, improving test coverage, and enabling continuous integration and delivery. SDETs often have strong programming abilities and a deep understanding of both software engineering and quality assurance best practices.

What are the key skills and qualifications needed to thrive as a software development engineer in test?

To thrive as a Software Development Engineer in Test (SDET), you need a solid background in software engineering principles, programming skills (often in languages like Java, Python, or C#), and a strong understanding of testing methodologies. Familiarity with automated testing frameworks (such as Selenium, JUnit, or TestNG), CI/CD tools, and sometimes certifications like ISTQB are typically required. Analytical thinking, attention to detail, and effective communication are essential soft skills that help SDETs collaborate with developers and identify issues efficiently. These skills are crucial to ensure robust, scalable, and high-quality software products through efficient test design and automation.
What cities near Littleton, CO are hiring for Software Development Engineer In Test jobs? Cities near Littleton, CO with the most Software Development Engineer In Test job openings:
Software Development Engineer In Test jobs near you
Infographic showing various Software Development Engineer In Test job openings in Littleton, CO as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 14% Part Time, and 3% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $114,959 per year, or $55.3 per hour.

Senior Software Engineer - Test Automation & Infrastructure

CesiumAstro

Westminster, CO • On-site

$133K - $160K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 24 days ago

Job description

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.
At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.
We are seeking a Senior Software Engineer - Test Automation & Infrastructure to develop and scale automated test systems supporting the validation of complex RF and satellite communications payloads. This role sits at the intersection of software development and hardware test engineering, building robust automation frameworks and infrastructure that ensure reliable, repeatable system validation.
You will play a key role in improving product quality, accelerating development cycles, and enabling seamless integration across hardware and software systems.
KEY RESPONSIBILIES
  • Develop automated test software to control laboratory instrumentation such as signal generators, spectrum analyzers, power supplies, and network equipment.
  • Implement and maintain test sequences for both system-level and component-level validation.
  • Support integration and execution of tests across hardware and software environments.
  • Debug and troubleshoot test failures across software, hardware, and interface layers.
  • Ensure test systems produce accurate, repeatable, and reliable results.
  • Design and implement software for device under test (DUT) control, including command handling, telemetry ingestion, and state management.
  • Build reusable automation frameworks and scripts to streamline test development.
  • Apply best practices in software engineering, including modular design, version control, and code reviews.
  • Reduce manual intervention through efficient and scalable automation solutions.
  • Develop tools and utilities to enhance test engineering productivity.
  • Design and maintain scalable test automation infrastructure supporting multiple configurations and environments.
  • Enhance existing frameworks for improved reliability, maintainability, and scalability.
  • Integrate automated testing into CI/CD pipelines where applicable.
  • Standardize tooling and infrastructure across teams to ensure consistency.
  • Contribute to shared libraries and reusable automation components.
  • Act as a technical bridge between software and test engineering teams.
  • Collaborate with systems, hardware, and software teams to ensure system testability.
  • Support integration of new components into existing test environments.
  • Translate system requirements into effective automation strategies.
  • Participate in design and integration reviews to ensure validation readiness.
  • Identify and implement improvements to test automation architecture and codebase.
  • Contribute to the evolution of next-generation test frameworks and infrastructure.
  • Drive simplification and standardization to reduce development cycle time.
  • Advocate for scalable, maintainable, and reusable design principles.
  • Continuously improve test processes, tools, and methodologies.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
  • Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience).
  • 5-8 years of experience in software engineering, test automation, or related roles.
  • Experience developing software that interfaces with hardware systems or laboratory instrumentation.
  • Strong experience in test automation framework and infrastructure development.
  • Proficiency in Python, C/C++, or similar.
  • Familiarity withGit, CI/CD tools, automated test frameworks.
  • Hardware/software integration and system-level testing expertise.
  • Instrumentation control and data acquisition knowledge.
  • Solid understanding of software development lifecycle (SDLC) and best practices.
  • Proven debugging and root cause analysis skills across integrated systems.
  • Ability to design scalable systems and think architecturally.
  • Strong analytical skills with attention to detail.
  • Ability to manage multiple priorities in a fast-paced environment.
  • Effective communication skills across technical and non-technical audiences.
  • Comfortable working in a laboratory environment with electronic test equipment.

$133,000 - $160,000 a year
CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.
CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.
Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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