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Senior Software Development Engineer In Test Jobs in Frederick, MD

Leidos

Sr. Software Developer

Gaithersburg, MD

$87K - $157K/yr

Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team ... Additional factors considered in extending an offer include (but are not limited to ...

Leidos

Sr. Software Developer

Gaithersburg, MD · On-site

$87K - $157K/yr

Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team ... Additional factors considered in extending an offer include (but are not limited to ...

Leidos

Senior Software Engineer

Rockville, MD · On-site

$107K - $195K/yr

Participate in test, staging, and production deployments , ensuring system reliability and ... Implement API development , ETL processes , and enterprise search capabilities (e.g., Elasticsearch)

Leidos

Senior Software Engineer

Gaithersburg, MD · On-site

$107K - $195K/yr

Participate in test, staging, and production deployments , ensuring system reliability and ... Implement API development , ETL processes , and enterprise search capabilities (e.g., Elasticsearch)

Leonardo DRS

Senior Software Engineer

Germantown, MD · On-site

$107 - $145/hr

Senior Software Engineer Location: Germantown, MD, US, 20876 Job ID: 115048 DRS RADA Technologies ... Your expertise in secure software development and proven ability to tackle complex technical ...

Leidos

Sr. Software Developer

Gaithersburg, MD · On-site

$59 - $77.75/hr

... test, deploy, and maintain enterprise software applications using modern development practices ... Participate in sprint planning, backlog refinement, daily stand-ups, sprint reviews, and ...

Leonardo DRS

Senior Software Engineer

Germantown, MD · On-site

$107K - $144K/yr

Join our dynamic radar defense company as a Senior Software Engineer where you'll drive technical ... Your expertise in secure software development and proven ability to tackle complex technical ...

Leonardo DRS

Senior Software Engineer

Germantown, MD · On-site

$107K - $144K/yr

Join our dynamic radar defense company as a Senior Software Engineer where you'll drive technical ... Your expertise in secure software development and proven ability to tackle complex technical ...

Leidos

Senior Test Engineer

Gaithersburg, MD

$107K - $195K/yr

Position may be performed in the following locations below. * Gaithersburg, MD * Alexandria, VA ... Experience testing enterprise applications throughout the software development lifecycle. * Strong ...

Leidos

Senior Software Engineer

Rockville, MD · On-site

$131K - $237K/yr

As a Senior Software Engineer, you will : * Support the development of distributed backend services ... in a quantitative or analytical field (Software Development, Computer Science, Mathematics ...

Leidos

Senior Software Engineer

Rockville, MD · Hybrid

$131K - $237K/yr

As a Senior Software Engineer, you will : * Support the development of distributed backend services ... in a quantitative or analytical field (Software Development, Computer Science, Mathematics ...

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Showing results 21-40

All JobsSoftware Development Engineer In Test JobsSenior Software Development Engineer In Test JobsSenior Software Development Engineer In Test Jobs in Frederick, MD

Senior Software Development Engineer In Test information

See Frederick, MD salary details

$22.4K

$124.8K

$162.6K

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

As of Aug 11, 2026, the average yearly pay for senior software development engineer in test in Frederick, MD is $124,841.00, according to ZipRecruiter salary data. Most workers in this role earn between $109,900.00 and $142,700.00 per year, depending on experience, location, and employer.

How does a senior software development engineer in test typically collaborate with development and product teams to ensure software quality?

As a Senior Software Development Engineer In Test (SDET), you will work closely with both development and product teams throughout the software development lifecycle. This includes participating in design and requirements discussions to identify potential test cases early, contributing to test automation strategies, and providing feedback on testability and quality risks. SDETs often pair with developers to review code, co-create test plans, and triage bugs together, ensuring that testing is fully integrated into the CI/CD pipeline. Effective communication and cross-team collaboration are essential for proactively identifying issues and maintaining high software quality standards.

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

AspectSenior Software Development Engineer In TestSoftware Development Engineer In Test
ExperienceTypically 5+ years in testing and developmentEntry to mid-level, 1-3 years experience
ResponsibilitiesDesigns complex test frameworks, mentors juniors, leads testing initiativesDevelops test cases, automates tests, executes testing tasks
Skills & CertificationsAdvanced coding, automation, testing tools, leadership skillsProgramming, automation, testing tools
Work EnvironmentCollaborates with cross-functional teams, often in Agile settingsWorks closely with developers, focuses on automation and manual testing

In summary, a Senior Software Development Engineer In Test has more experience, leadership responsibilities, and strategic testing roles compared to a Software Development Engineer In Test, who primarily focuses on developing and executing tests.

What are the key skills and qualifications needed to thrive as a senior software development engineer in test, and why are they important?

To thrive as a Senior Software Development Engineer In Test, you need advanced programming skills, deep knowledge of software testing methodologies, and a bachelor's degree in computer science or a related field. Expertise with automation frameworks (such as Selenium, Cypress, or Appium), CI/CD tools, and scripting languages is typically required, along with relevant certifications like ISTQB. Strong analytical thinking, problem-solving, and effective communication are crucial soft skills for collaborating with cross-functional teams and driving quality initiatives. These capabilities ensure rigorous test coverage, faster release cycles, and high-quality software products.

What does a senior software development engineer in test do?

A Senior Software Development Engineer in Test (SDET) is responsible for designing, developing, and maintaining automated test frameworks and tools to ensure the quality and reliability of software products. They work closely with development and QA teams to identify test requirements, create robust test cases, and integrate automated tests into the CI/CD pipeline. In addition to coding and scripting, Senior SDETs mentor junior team members, analyze test results, and help troubleshoot complex issues to continuously improve software quality. Their expertise bridges the gap between development and testing, ensuring both speed and quality in software releases.
What are the most commonly searched types of Software Development Engineer In Test jobs in Frederick, MD? The most popular types of Software Development Engineer In Test jobs in Frederick, MD are:
What are popular job titles related to Senior Software Development Engineer In Test jobs in Frederick, MD? For Senior Software Development Engineer In Test jobs in Frederick, MD, the most frequently searched job titles are:
What job categories do people searching Senior Software Development Engineer In Test jobs in Frederick, MD look for? The top searched job categories for Senior Software Development Engineer In Test jobs in Frederick, MD are:
What cities near Frederick, MD are hiring for Senior Software Development Engineer In Test jobs? Cities near Frederick, MD with the most Senior Software Development Engineer In Test job openings:
Senior Software Development Engineer In Test jobs near you
Infographic showing various Senior Software Development Engineer In Test job openings in Frederick, MD as of June 2026, with employment types broken down into 5% As Needed, 42% Full Time, 24% Part Time, and 29% Contract. Highlights an 93% Physical, 1% Hybrid, and 6% Remote job distribution, with an average salary of $124,841 per year, or $60 per hour.

Sr. Software Developer

Leidos

Gaithersburg, MD

$87K - $157K/yr

Full-time

Posted 29 days ago

Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 151 frontline employees who took The Breakroom Quiz

76th of 485 rated business services

Job description

Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team working on the Federal Aviation Administration's En-Route Automation Modernization ERAM) system, which is the heart of the Next Generation Air Traffic Control System. ERAM is vital to air navigation, providing the backbone foundational platform for all ATC Systems.

Developers on ERAM support new system capabilities/enhancements requested by the FAA and system upgrades based on Tech Refresh initiatives. ERAM also enables increased air traffic flow as the need for additional capabilities evolve. Leidos is looking for developers for the ERAM middleware layer which we refer to as "FlightDeck".

Flight Deck (FDK) functions, capabilities include:

Real-Time Programming on High Availability Systems

Multi-threaded programming

Low Level Operating Systems (Linux) - Customization, RPMs, Firmware, Unix Command Line

SW/HW Integration, NetApp, Hardware, Ansible Playbooks, automation (scripting languages)

Low level communication software (TCP-IP, UDP, SCTP)

Support of Common Services utilized by ERAM Application teams

System Maintenance Concepts

Primary Responsibilities

Modernizing the AT control system by improving the availability and performance of the ERAM system.

Supporting ERAM as it continues to migrate upgrade hardware, software, OS levels, firmware, security, and CAS. Detailed knowledge of Linux OS and OS concepts desirable.

Optimizing the experience for the flying public, Air Traffic Control, and the airline industry by improving the collaboration and decision-making capabilities of flight controllers

Develop Maintain FAA air traffic control software (primarily Ada95/C++) on a UNIX/Linux platform. Leverage (KSH/PERL/PYTHON) for automation capabilities.

Performing software development as needed for the ERAM system

Coordinate Solutions with Systems Engineering

Coordinate the development of new capabilities and upgrade to common services provided the applications via the FlightDeck API.

Leveraging AI/ML concepts to improve SW processes and capabilities

Basic Qualifications

Computer Science or Computer Engineering Degree

Demonstrated Software Development Skills/Capabilities

Excellent Verbal and Communication Skills

Flexibility in working across multiple SW languages

Demonstrated ability to debug and solve problems

A Strong Desire to Learn & Improve your Technical Capabilities

4-8 Years work experience in a Computer Science related position (outside academic experience)

Preferred Qualifications

Work Experience in a Technical organization performing Software Engineering Tasks.

Previous Software Experience working Air Traffic Control Programs

Leadership Skills & Experience

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:July 13, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

What Leidos employees say

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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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