Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Specialist, Systems Engineer - User Acceptance Tester

L3Harris Technologies

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Senior Specialist, Systems Engineer – User Acceptance Tester
Job Code: 38609
Job Location: Springfield, VA (100% Onsite)
Work Schedule: 5/8 Monday-Friday

Job Description:

L3Harris Technologies currently has an opening for a User Acceptance Tester with expertise in Test and Integration for an important National Security Program.

The successful candidate will support a high performing team of Government and Contractor professionals by testing software releases to ensure they function correctly, documenting failed test cases, and documenting any changes or updates needed to existing procedures. This role is critical in maintaining the integrity and performance of our software products. 

Essential Functions:

  • Design, develop, and manage test cases, including traceability to requirements, user stories, etc.
  • Execute software testing events using industry-accepted test tools.
  • Participate in User Acceptance Testing (UAT) and Government Acceptance Testing (GGAT) exercises.
  • Document and report any bugs, issues, discrepancies, or failed test cases found during testing government defect tracking tool.
  • Develop/deliver test reports as well as present finding to project stakeholders.
  • Able to independently develop and precisely follow test scripts with attention to detail, document findings.
  • Use strong written and verbal communication skills, with experience updating senior leadership.
  • Able to work independently with minimum supervision.

Qualifications:

  • Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
  • Active Top Secret/SCI with CI Polygraph
  • 5+ years of software integration and test experience with a focus on user acceptance testing (UAT).
  • Experience developing and executing manual and automated software tests.
  • Experience using industry-accepted test automation tools, such as Test Complete or Selenium.
  • Experience using industry-accepted requirements repository and defect tracking tools (ex. Backlog, Bugzilla, Jira, etc.)

Preferred Additional Skills:

  • Knowledge of NRO organization and operational missions.
  • Relevant certification or coursework (e.g., ISTQB Certified Tester – Acceptance Testing (CT-AcT).

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish . For information regarding your Right To Work, please click here for English or Spanish .

Vacancy posted 10 hours ago
Similar jobs that could be interesting for youBased on the Senior Specialist, Systems Engineer - User Acceptance Tester in Manassas, VA vacancy
  • $55 - $65 per hour

    # Senior Systems EngineerApply**Job#: 3039188****Job Description:****Position Title:** Senior Systems Engineer**Location:** Onsite at client site in Manassas, VA**Pay Rate Range:** $55/...  ...Ability to configure Active Directory users and groups, maintain DNS records and zones... 
    Senior
    Hourly pay
    Contract work
    Remote work

    Apex Systems

    Manassas, VA
    4 days ago
  •  ...MANTECH seeks a motivated, career, and customer-oriented Senior Systems Engineer to join our team in Chantilly, VA . You will help troubleshoot and fix a cyber security testing environment while developing its replacement. By leveraging your strong technical... 
    Senior
    Work experience placement
    Work at office

    MANTECH

    Chantilly, Loudoun County, VA
    2 hours ago
  •  ...SoSA Corp is seeking experienced engineers in SIGINT systems engineering located in Fairfax, VA. The role involves analysis for SIGINT collection payloads and working on advanced technologies. Candidates must possess a BS in engineering, 5+ years of relevant experience... 
    Senior

    SoSA Corp

    Fairfax, VA
    4 days ago
  •  ...A leading IT solutions provider is seeking a Senior Tester focused on User Acceptance Testing (UAT). Located in McLean, VA, this role involves developing test scenarios, executing test cases, and interacting closely with business and development teams. The ideal candidate... 
    Senior

    Paradigm Infotech

    McLean, VA
    3 days ago
  •  ...Description SAIC is seeking a Senior Systems Engineer to support the NRO GEOINT System Integration & Architecture (GSIA) office. This is a Systems Engineering and Technical Assistance (SETA) support position to assist in defining the future GEOINT space architecture. The... 
    Senior
    Work at office
    Flexible hours

    SAIC

    Chantilly, Loudoun County, VA
    3 days ago
  • Position Summary: Oversees employees and directs operations of the hearing center. Participates in licensed hearing aid dispenser duties. Provides a high level of member service. For additional information about pay ranges, click here. We offer a comprehensive package ...
    Senior
    Temporary work

    Elijahhouseliving

    Chantilly, Loudoun County, VA
    2 days ago
  • $90.5k - $168.5k

     ...of national security. Job Title: Specialist, Systems Engineer – Watch Officer (Active TS/SCI w/CI Poly...  ...stand-up operational briefings to senior stakeholders and mission partners....  ...citizens. In addition, applicants who accept a conditional offer of employment may... 
    For contractors
    Work at office
    Local area
    Monday to Friday
    Flexible hours
    Shift work

    L3Harris Technologies

    Woodbridge, VA
    10 hours ago
  •  ...evaluates and modifies end-to-end systems and system-oriented products...  ...and works with other engineering disciplines to develop lower-...  ...verification procedures and customer acceptance test procedures. Reviews test...  ...where we work directly with users, potentially going into harm'... 
    Senior
    Contract work
    For contractors

    Arcfield

    Chantilly, Loudoun County, VA
    2 days ago
  • $110.5k - $149.5k

     ...enterprise‑level intelligence systems. This role blends project...  ...ensuring new capabilities are engineered, evaluated, and deployed with...  ...and solution approaches for senior leadership. Technical Project...  ...Feasibility Analyze mission and user requirements and convert them... 
    Senior
    Flexible hours

    General Dynamics Information Technology

    McLean, VA
    3 days ago
  • $120k - $210k

     ...vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of...  ...boldest and most ambitious space missions. SENIOR RF PAYLOAD FORMULATION SYSTEMS ENGINEER I/II - SECRET CLEARANCE Based out of Rocket Lab'... 
    Senior
    Permanent employment
    Local area

    Rocket Lab

    Chantilly, Loudoun County, VA
    2 days ago
  • $129k - $249.6k

     ...that span satellite, launch, ground, and cyber systems for defense, civil and commercial customers....  ...terrestrial applications. We are looking for a senior specialist in emitter geolocation analysis, SIGINT systems engineering and data processing of overhead collections. The... 
    Senior
    Full time
    Work experience placement
    Work at office
    Immediate start
    Remote work
    Relocation package
    Flexible hours

    The Aerospace Corporation

    Chantilly, Loudoun County, VA
    10 hours ago
  • $131.3k - $237.35k

     ...an exciting opening for you, as our next TS/SCI cleared Senior Systems Engineer , to play a critical role with design, engineering, development...  ...items in the backlog for upcoming sprints, refining acceptance criteria and complexity estimates or removing tickets that... 
    Senior
    Contract work
    For contractors
    Local area
    Immediate start
    Remote work
    Flexible hours

    Leidos

    McLean, VA
    5 days ago
  •  ...Position Title: Senior Systems Engineer Requisition ID: 1737 Position Location: Fairfax, VA / Concord, NH (onsite) Position Reports To: Senior Principal Systems Engineer Supervises Others: No At Trident Systems Space Electronic Systems (SES) division, we believe in the... 
    Senior
    Permanent employment
    Temporary work
    For contractors
    Local area

    Trident

    Fairfax, VA
    2 days ago
  • $148.85k - $269.08k

    A defense and technology company in Virginia is seeking a Senior System Engineer to support cybersecurity initiatives. Responsibilities include designing architectures and enhancing systems for the Insider Threat Program. Ideal candidates will have 15+ years of IT experience... 
    Senior

    Leidos

    Fairfax, VA
    2 days ago
  • Position Summary ECS is seeking a System Performance Engineer - Senior to support the Army National Guard (ARNG) ENOCS program in optimizing system performance and ensuring the scalability and reliability of enterprise IT environments. The selected candidate will play... 
    Senior
    Local area

    ECS

    Fairfax, VA
    2 days ago
  • $135.8k - $203.6k

    Northrop Grumman Corp. (AU) is looking for a Systems Engineer Level 4 - Engineering Coordinator based in Fairfax, VA. You will oversee the execution of multiple technical projects and ensure high quality and efficiency throughout the lifecycle phases. Applicants must have... 
    Senior

    Northrop Grumman Corp. (AU)

    Fairfax, VA
    4 days ago
  • $130k - $170k

     ...Senior Reliability Engineer About Electra At Electra, we’re pioneering sustainable aviation by developing hybrid‑electric Ultra Short Takeoff and...  ...design activities to improve the reliability of the system. This is an incredible opportunity to make a direct impact... 
    Senior
    Work at office
    Immediate start

    Electra-Aero

    Manassas, VA
    2 days ago
  • $148.85k - $269.08k

     ...Modernization Sector at Leidos currently has an opening for a Senior System Engineer supporting the HEITS Contract as part of the Department of...  ...+ years) in IT service delivery management Experience with User Activity Monitoring products and platforms Experience with... 
    Senior
    Contract work

    Leidos

    Fairfax, VA
    3 days ago
  •  ...About the Role Redhorse transforms the way government uses data and technology. To support this mission, we are seeking a Senior Systems Engineer to serve as a technical authority for our most complex Computer Network Operations (CNO) initiatives. In this role, you won... 
    Senior
    Contract work

    Redhorse Corporation

    Woodbridge, VA
    3 days ago
  • Cybersecurity Systems Engineer - Senior (CAASM) Location: Washington D.C. Employment Type: Full-Time About SERVISS At SERVISS, we deliver cutting‑edge cybersecurity and IT solutions to government and commercial clients. We engineer mission platforms that become foundational... 
    Senior
    Full time

    SERVISS LLC

    Fairfax, VA
    6 days ago
  • $77.6k - $176k

     ...Job Number: R0242151 Program Management Specialist, Senior The Opportunity: As a program management specialist, you know the complexities...  ...tactical planning and regularly interact with customers, software engineers, AI/ML SMEs, and program managers. The real impact of... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    McLean, VA
    4 days ago
  • $150k - $190k

     ...Senior Network/Systems Tools Engineer Knack Works, a Jacobs Company, has an opening for a Senior Network/Systems Tools Engineer to support the Intelligence...  ...to junior administrators and operators that manage user accounts, permissions, and access controls within NOM to... 
    Senior
    Immediate start

    Jacobs Solutions

    Chantilly, Loudoun County, VA
    2 days ago
  • Insight Global is seeking a Senior Systems Engineer in Fairfax, VA to support federal law enforcement programs. The ideal candidate will oversee Windows and Azure environments, providing operational support and enhancing cloud infrastructure. Candidates should have a minimum... 
    Senior

    Insight Global

    Fairfax, VA
    4 days ago
  •  ...Job Description Job Description Description: Senior System Engineer Manassas, VA Full-time, Exempt Security Clearance: Top Secret...  ...’s Ethics and applicable security policies addressing the acceptable use of information system resources. BruckEdwards is... 
    Senior
    Full time
    Monday to Friday
    Flexible hours

    BruckEdwards Inc

    Manassas, VA
    3 days ago
  • $145k - $160k

     ...Job Description Job Description Computer Technologies Consultants (CTC) is seeking an Enterprise Technology Systems (ETS) Senior Storage Systems Engineer to support a government customer in Manassas, VA.  With offices in Washington DC and San Diego, CA, CTC is... 
    Senior
    Full time
    Contract work
    For contractors
    Local area

    CTC

    Manassas, VA
    8 days ago
  •  ...Position Summary Lockheed Martin Rotary and Mission Systems is seeking a highly motivated Systems Engineering Manager for the SQQ‑89 engineering team. The role requires integration of software, hardware, and data science to develop advanced solutions for customers. Responsibilities... 
    Full time
    Relocation
    Shift work

    Lockheed Martin Corporation

    Manassas, VA
    3 days ago
  • $105.68k - $136.94k

     ...creative and motivated individual to join our growing team as a Senior 3D Specialist – Graphics. This position reports directly to the Graphics...  ..., and interactive visualizations that communicate civil engineering projects to clients, stakeholders, and the public. Support... 
    Senior
    Work at office
    Work from home

    RK&K

    Fairfax, VA
    3 days ago
  •  ...security. Job Title: Senior Specialist, Integration & Test Engineer Job Code: 38547 Job...  ...a complex communications system, setting it up, testing it...  ...together and then shows the end users how to use them in the...  ...addition, applicants who accept a conditional offer of... 
    Senior
    For contractors
    Local area

    L3Harris Technologies

    Chantilly, Loudoun County, VA
    14 hours ago
  • Sr. Systems Engineer - Integration & Test (I&T) Clearance: None, Clearable U.S. Citizenship required with ability to obtain TS/SCI when they...  ...CS or similar required, MS preferred Experience: 10+ years (Senior-level candidate) Requirements: Has helped lead systems... 
    Senior

    Select Search Associates LLC

    Fairfax, VA
    4 days ago
  • $106.5k - $196.5k

     ...the interest of national security. Job Title: Senior Specialist, Information Security Systems Engineering (ISSE) Job Code: 38251 Job Location: Chantilly...  ...granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject... 
    Senior
    Local area
    Remote work
    Monday to Friday
    Flexible hours

    L3Harris Technologies

    Chantilly, Loudoun County, VA
    14 hours ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Specialist, Systems Engineer - User Acceptance Tester. Be the first to apply!