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Software Testing Engineer Jobs in Gaithersburg, MD

Staffed4U

Senior Software Engineer

Chantilly, VA · On-site +1

$126K - $166K/yr

Senior Software Engineer Location: Chantilly, Virginia Security Clearance: Active TS/SCI with ... Support installation, configuration, testing, and maintenance of software systems and applications

VTG

Software Application Tester

Chantilly, VA · On-site

... in programming/scripting languages (Java, Python, JavaScript, or similar) * Experience testing ... Understanding of software development life cycle (SDLC) and Agile methodologies * Experience with ...

Leidos

Journeyman Software Engineer

Gaithersburg, MD · On-site

Leidos Digital Modernization sector is seeking an experienced Journeyman Software Engineer to ... Experience supporting software testing, debugging, and integration activities. * Strong knowledge ...

Leidos

Journeyman Software Engineer

Gaithersburg, MD · On-site

Leidos Digital Modernization sector is seeking an experienced Journeyman Software Engineer to ... Experience supporting software testing, debugging, and integration activities. * Strong knowledge ...

Trinity ES LLC

Software Engineer

Chantilly, VA · On-site

Optimize existing SAP code and participate in performance tuning, debugging, and system testing ... Proven experience in the software engineering lifecycle, including design, development, testing ...

Leidos

Senior Software Engineer

Gaithersburg, MD · On-site

$132K - $174K/yr

Plan, design, and implement software testing tools, processes, and procedures for conducting all ... Bachelor's degree in Computer Science, Software Engineering, Engineering, or related technical ...

Hoplite Solutions LLC

Software Engineer

Bethesda, MD · On-site

Develops software system validation and testing methods using Junit and Katalon and uses integrated ... DevOps tools like GitHub, Jenkins, Unix bash scripting and leveraging tools such as JIRA and ...

USM

ETL Testing Engineer

Washington, DC

... Software and Product Development, IT Outsourcing and Technology assistance supplier headquartered ... Position title: ETL Testing Engineer Location: Washington, DC (Local or Nearby) Duration: 6 Months ...

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Software Testing Engineer information

See Gaithersburg, MD salary details

$11

$55

$78

How much do software testing engineer jobs pay per hour?

As of Jul 1, 2026, the average hourly pay for software testing engineer in Gaithersburg, MD is $55.59, according to ZipRecruiter salary data. Most workers in this role earn between $45.43 and $63.37 per hour, depending on experience, location, and employer.

What are some common collaboration practices between Software Testing Engineers and developers during the software development lifecycle?

Software Testing Engineers frequently collaborate with developers through activities such as sprint planning, daily stand-ups, and code reviews. They often provide feedback on testability during requirements analysis and work closely with developers to understand new features and identify potential issues early. Effective communication ensures that defects are clearly documented, and joint debugging sessions are common to resolve complex bugs efficiently. This close collaboration helps maintain a high-quality product and fosters a culture of continuous improvement within the team.

What are the key skills and qualifications needed to thrive as a Software Testing Engineer, and why are they important?

To thrive as a Software Testing Engineer, you need a solid understanding of software development lifecycles, test design techniques, and programming or scripting languages, typically supported by a degree in computer science or related fields. Familiarity with automation tools (such as Selenium or JUnit), bug tracking systems (like Jira), and certifications like ISTQB are highly valued. Attention to detail, analytical thinking, and strong communication skills help you identify issues and collaborate effectively with development teams. These skills and qualities are crucial to ensure software quality, minimize defects, and deliver reliable products to end users.

What is the difference between Software Testing Engineer vs QA Analyst?

AspectSoftware Testing EngineerQA Analyst
CertificationsISTQB, CSTEISTQB, CSTE
Work EnvironmentDevelopment teams, testing labsQuality assurance departments, testing labs
Industry UsageSoftware companies, tech firmsSoftware companies, IT services
Primary FocusDesigning and executing test cases, automationTest planning, process improvement, documentation

While both roles focus on ensuring software quality, Software Testing Engineers often develop and execute test cases, including automation, whereas QA Analysts focus on testing processes, documentation, and quality standards. Both roles are essential in delivering reliable software products.

What does a Software Testing Engineer do?

A Software Testing Engineer is responsible for evaluating software applications to ensure they function correctly and meet specified requirements. They design and execute test plans, identify bugs or issues, and work closely with developers to resolve defects. Their role helps maintain software quality, reliability, and performance before the product is released to users. They may use both manual and automated testing methods to cover different aspects of the application.
What are popular job titles related to Software Testing Engineer jobs in Gaithersburg, MD? For Software Testing Engineer jobs in Gaithersburg, MD, the most frequently searched job titles are:
What job categories do people searching Software Testing Engineer jobs in Gaithersburg, MD look for? The top searched job categories for Software Testing Engineer jobs in Gaithersburg, MD are:
What cities near Gaithersburg, MD are hiring for Software Testing Engineer jobs? Cities near Gaithersburg, MD with the most Software Testing Engineer job openings:
Software Testing Engineer jobs near you
Infographic showing various Software Testing Engineer job openings in Gaithersburg, MD as of June 2026, with employment types broken down into 81% Full Time, 18% Part Time, and 1% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $115,623 per year, or $55.6 per hour.

Senior Software Engineer

Staffed4U

Chantilly, VA • On-site, Remote

$126K - $166K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 5 days ago

Job description

Senior Software Engineer
Location: Chantilly, Virginia
Security Clearance: Active TS/SCI with Polygraph Required
Job Type: Full-Time

Position Overview

The selected candidate will provide senior-level software engineering support for the design, development, integration, and maintenance of mission-critical applications and systems in a secure technical environment. The role requires advanced knowledge of software development, systems engineering, cloud technologies, and system performance optimization.

Minimum Qualifications
  • Bachelor’s degree and a 6+ years of relevant experience; OR
  • Ten (10) years of related professional experience in lieu of a degree
  • Minimum of six (6) years of software engineering experience
  • Active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance with Polygraph
  • Demonstrated experience supporting complex technical and operational environments
Duties and Responsibilities
  • Design, develop, test, and maintain enterprise software systems and applications
  • Analyze software and system requirements to develop technical solutions that meet operational objectives
  • Evaluate and improve software performance, scalability, reliability, and maintainability
  • Develop system specifications, technical documentation, and implementation plans
  • Coordinate with engineers, analysts, developers, and stakeholders to support system integration and deployment
  • Modify and enhance existing software applications to improve functionality and resolve system issues
  • Analyze interfaces between hardware and software systems and define performance requirements
  • Support installation, configuration, testing, and maintenance of software systems and applications
  • Develop and maintain applications within cloud-based environments, including modernization of legacy systems
  • Estimate software development schedules, technical risks, and resource requirements
  • Apply advanced analytical and engineering methods to evaluate system performance and software outcomes
  • Provide technical leadership, mentoring, and guidance to junior engineering staff and development teams
  • Support troubleshooting, root cause analysis, and resolution of complex technical issues
Required Knowledge, Skills, and Abilities
  • Advanced knowledge of software engineering principles, programming, and systems analysis
  • Experience developing applications in cloud and enterprise environments
  • Ability to analyze user requirements and translate them into technical solutions
  • Experience with software testing, debugging, and performance optimization
  • Strong analytical, organizational, and problem-solving skills
  • Excellent written and verbal communication skills
  • Ability to work independently and collaboratively in a fast-paced technical environment
Preferred Technical Experience

Experience or familiarity with one or more of the following technologies or tools is desirable:

  • Programming languages and software development frameworks
  • Web application development technologies including HTML, JavaScript, Apache Struts, and Ruby on Rails
  • Software testing, usability testing, and defect tracking tools including Mercury Interactive LoadRunner
  • Source code editors and software development environments
  • Desktop computing systems, high-end servers, and application server technologies
 About the Organization

A dynamic, quality-focused small business providing innovative and mission-oriented solutions to government and commercial customers. The organization supports defense, intelligence, civilian, and commercial sectors through a team of experienced professionals and subject matter experts.

Benefits Summary

Our client offers a comprehensive benefits package to support employee well-being, financial security, professional growth, and work-life balance. Benefits may include:

  • Flexible Time Off
    Employees are encouraged to manage their time responsibly while meeting work requirements and maintaining productivity.
  • Hybrid Work Environment
    Flexible work arrangements may include a combination of remote and onsite work opportunities based on operational needs.
  • Retirement Savings Plan
    Retirement benefits may include participation in a 401(k) savings program with employer contributions.
  • Paid Parental Leave
    Paid leave is available to support employees welcoming a new child through birth, adoption, or foster placement.
  • Comprehensive Health Coverage
    Medical, dental, vision, and other healthcare benefit options are available to support individual and family healthcare needs.
  • Professional Development and Continuing Education
    Opportunities for continued learning, certifications, and job-related training are available to support career growth and advancement.

We are an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, veteran status, or any other protected status under applicable law.