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Senior Software Test Engineer Jobs in Washington

Peraton

Senior Software Test Engineer

Lanham, MD · Hybrid

$110K - $143K/yr

Responsibilities Peraton is seeking a Senior Software Test Engineer to join our team of qualified, diverse individuals. The ideal candidate is a senior testing professional who thrives in dynamic ...

Peraton

Senior Software Test Engineer

Lanham, MD · On-site

$80 - $128/hr

Responsibilities Peraton is seeking a Senior Software Test Engineer to join our team of qualified, diverse individuals. The ideal candidate is a senior testing professional who thrives in dynamic ...

Peraton

Senior Software Test Engineer

Lanham, MD · On-site

$80K - $128K/yr

Responsibilities Peraton is seeking a Senior Software Test Engineer to join our team of qualified, diverse individuals. The ideal candidate is a senior testing professional who thrives in dynamic ...

Peraton

Senior Software Test Engineer

Lanham, MD · Hybrid

$110K - $143K/yr

Responsibilities Peraton is seeking a Senior Software Test Engineer to join our team of qualified, diverse individuals. The ideal candidate is a senior testing professional who thrives in dynamic ...

MSD

Senior Software Test Engineer

Rockville, MD · On-site

$88K - $134K/yr

POSITION SUMMARY The Senior Software Test Engineer is responsible for the testing of major components of present and future MSD software products. DUTIES AND RESPONSIBILITIES * Independently create ...

Power3 Solutions

Software Test Engineer

Columbia, MD · On-site

The Software Test Engineer will design, develop, and execute test strategies to ensure the quality and reliability of complex software systems supporting operational missions. Responsibilities : • ...

EverWatch

Software Test Engineer

Annapolis Junction, MD · On-site

The Software Test Engineer will work with software engineers and DevOps teams to evaluate software for data processing and analytics platforms, create test plans, and implement testing processes to ...

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All JobsSoftware Test Engineer JobsSenior Software Test Engineer JobsSenior Software Test Engineer Jobs in Washington

Senior Software Test Engineer information

See Washington salary details

$25.5K

$142.2K

$185.2K

How much do senior software test engineer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for senior software test engineer in Washington is $142,210.00, according to ZipRecruiter salary data. Most workers in this role earn between $125,200.00 and $162,500.00 per year, depending on experience, location, and employer.

Is senior software test engineer a good career?

A senior software test engineer is a valuable role in the software development process, focusing on quality assurance, test planning, and automation tools. It offers opportunities for career growth, specialization, and competitive salaries, especially with experience in scripting and testing frameworks. The role is in demand across various industries that rely on software reliability and quality standards.

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

A Senior Software Test Engineer needs deep expertise in software testing methodologies, automation frameworks, and programming languages like Java, Python, or C#, typically backed by a degree in computer science or related field. Familiarity with tools such as Selenium, JUnit, TestNG, and bug-tracking systems like Jira, as well as certifications like ISTQB, is highly valuable. Strong problem-solving abilities, attention to detail, and effective communication skills enable collaboration and leadership within QA and development teams. These competencies are crucial to ensuring software quality, minimizing defects, and delivering reliable products in complex technical environments.

What are the typical collaboration points between a senior software test engineer and other teams during a project lifecycle?

Senior Software Test Engineers frequently collaborate with developers, product managers, and DevOps engineers throughout the project lifecycle. Early in the process, they work closely with developers to understand requirements and clarify acceptance criteria. During development, they coordinate on bug tracking and test coverage, and participate in sprint planning or daily stand-ups. They also interact with DevOps to integrate automated tests within CI/CD pipelines, ensuring smooth deployment and feedback cycles. This cross-functional collaboration is essential for delivering high-quality software efficiently.

What is the difference between Senior Software Test Engineer vs Software Test Engineer?

AspectSenior Software Test EngineerSoftware Test Engineer
CredentialsTypically requires 5+ years of experience, certifications like ISTQBEntry to mid-level, often with 1-3 years of experience, similar certifications
Work EnvironmentLeads testing projects, mentors junior staff, designs test strategiesPerforms test execution, reports bugs, follows test plans
Industry UsageUsed across software development companies, especially in larger teamsCommon in various tech companies, startups, and software firms

The main difference between a Senior Software Test Engineer and a Software Test Engineer lies in experience, responsibilities, and leadership. Senior roles involve strategic planning, mentorship, and complex testing, while Software Test Engineers focus on executing tests and reporting issues. Both roles are essential in ensuring software quality, with the senior position requiring more expertise and leadership skills.

What does a senior software test engineer do?

A Senior Software Test Engineer is responsible for designing, developing, and executing comprehensive test plans to ensure the quality and functionality of software products. They lead testing efforts, identify defects, and work closely with development teams to resolve issues. In addition, they may mentor junior testers, implement automation frameworks, and help define testing standards and best practices within the organization. Their goal is to ensure software reliability, performance, and user satisfaction before release.
What are the most commonly searched types of Software Test Engineer jobs in Washington? The most popular types of Software Test Engineer jobs in Washington are:
What cities in Washington are hiring for Senior Software Test Engineer jobs? Cities in Washington with the most Senior Software Test Engineer job openings:
Infographic showing various Senior Software Test Engineer job openings in Washington as of August 2026, with employment types broken down into 1% Internship, 85% Full Time, 11% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $142,210 per year, or $68.4 per hour.

Senior Software Test Engineer

Two Six Technologies

Arlington, VA • On-site

$127K - $165K/yr

Full-time

Re-posted 8 days ago

Job description

Job Summary:
Two Six Technologies is a company focused on building, deploying, and implementing innovative products to address complex challenges. They are seeking a Senior Software Test Engineer to develop and execute comprehensive tests for software product quality, collaborate with engineering teams, and contribute to automated testing frameworks.
Responsibilities:
• Perform software product testing via website interactions and tooling to investigate possible causes of problems.
• Develop functional, end-to-end, regression, and performance tests in manual test environments.
• Evaluate how custom web applications, distributed architectures, and interoperable data streams function together as a unified ecosystem.
• Assist in the progressive rollout and implementation of automated testing frameworks to scale existing manual efforts.
• Contribute to the design of new testing strategies aimed at verifying the quality, robustness, and integrity of AI-assisted code development.
• Detect, document, and track software defect reports and feature requests.
• Understand, reproduce, and troubleshoot product defects, collaborating closely with developers to determine the best resolution.
• Assist in the planning and implementation of Testing-Team processes and solutions in alignment with program and operational timelines.
Qualifications:
Required:
• 5+ years of software testing experience, with exposure to web automation tools (e.g., Selenium, Playwright, Cypress, etc.).
• 3+ years of experience with backend API testing, integration testing, and functional testing.
• Solid understanding of networking concepts, distributed systems, and cross-network data flows.
• Experience with UNIX / LINUX-based operating systems.
• Experience with SQL or other relational/non-relational database technologies.
• Familiarity with, or a strong interest in, modern development workflows using AI-assisted coding tools and methods for verifying code integrity.
• Experience testing complex, data-heavy systems or interoperable data streams.
• Solid grasp of technical writing and documentation.
• Bachelor’s degree in a relevant field, or comparable professional experience.
• Eligible to obtain and maintain a TS/SCI security clearance.
Preferred:
• Military cyber experience, networking experience, or understanding of common military, cyber, and networking vernacular.
• Familiarity with AI development and testing capabilities.
• Familiarity with virtualization or cloud technologies such as Docker, vSphere, Ansible, or AWS.
• Understanding of the Agile Software Development Life Cycle.
• Experience refining low-level testing or configuration scripts using Bash, Python, or Javascript.
• Experience with creating automated tests for geospatial libraries such as OpenLayers and CesiumJS.
Company:
Two Six Technologies provides cybersecurity and technology solutions for national security customers. Founded in 2017, the company is headquartered in Arlington, USA, with a team of 501-1000 employees. The company is currently Late Stage.

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