Senior Specialist, Systems Engineer - User Acceptance Tester
L3Harris Technologies
Overview 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 Details 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. #J-18808-Ljbffr
$106.5k - $197.5k
Job Title: Senior Specialist, Systems Engineer - User Acceptance TesterJob Code: 38609Job Location: Springfield, VA (100% Onsite)Work Schedule: 5/8 Monday-FridayJob... ...currently has an opening for a User Acceptance Tester with expertise in Test and Integration for an...SeniorFor contractorsFlexible hours$106.5k - $197.5k
...connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Senior Specialist, Systems Engineer - User Acceptance Tester Apply fast, check the full description by scrolling below to find out the full requirements for this role...SeniorFor contractorsLocal areaMonday to FridayFlexible hours$106.5k - $197.5k
Job Title: Senior Specialist, Systems Engineering - Joint Exercise Planner (Active TS/SCI with CI Poly Required)Job Code: 38744Job Location: Springfield, VA (100% On-site)Job Schedule: 5/8 Monday-FridayJob Description: L3Harris Technologies has an opening for a Joint Exercise...SeniorFlexible hours$92.5k - $171.5k
Job Title: Specialist, Systems Engineer - Mission Protection Specialist (Active TS/SCI w/ CI Poly Required)Job Code: 40712Job Location: Springfield... ...Description:L3Harris Technologies is currently seeking a Senior Specialist, Systems Engineer - Mission Protection...SuggestedFlexible hours$82.1k - $172.4k
Job Title: Senior Systems EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance... ...2/31/2026The Opportunity: Lead systems engineering for an Agile program delivering GEOINT... ...discipline (equivalent experience accepted). 8+ years of systems engineering experience...SeniorContract workWork experience placementFlexible hours$135k - $185k
OverviewVTG is looking for a Senior Systems Engineer in Springfield, VA.What will you do?Systems Engineers... ...the planning, analysis/traceability of user requirements, architectures... ...operational concepts, and project status, and accept user inputs for optimization of delivery...SeniorWork experience placementRemote work$92.5k - $171.5k
Job Title: Specialist, Systems Engineer - Watch Officer (Active TS/SCI w/CI Poly Required)Job Code: 38605Job Location: Springfield, VA (100% Onsite... ...delivering daily stand-up operational briefings to senior stakeholders and mission partners.Preferred Additional Skills...For contractorsWork at officeFlexible hoursShift work- ...Leidos is hiring Requirements Engineers and/or Business Process Analysts to join our Springfield, VA team. This role focuses on systems engineering, requirements analysis, and business process improvement for military weapon systems. You will work with DoDAF, DOORS, and...Senior
- ...national security, defense, and public service delivery. Our work focuses on sustaining, operating, and improving essential government systems and services, with proven operational excellence, and a commitment to mission success for our customers. Role Overview Joining...SeniorContract workRemote work
$135k - $190k
OverviewVTG is seeking a Senior Test Systems Engineer, located in Springfield, VA. Senior-level Test Systems Engineers assist in leading Application, System and Integration Testing teams performing test and evaluation across the National System of Geospatial-intelligence...SeniorWork experience placement$83 - $89 per hour
...Senior Systems Engineer Location: Hybrid (needs to be within 1 hour of DMV) Compensation: $83-89/hr (Final Compensation will be dependent on experience and skillset) 6 month contract-to-hire ABOUT THE ROLE Our client is seeking a Senior Systems Engineer with over 10 years...SeniorContract work$120k - $160k
...Description Description SAIC is seeking a Senior Systems Engineer. Job Duties : Provide technical analysis and... ...Must have have a Bachelors degree; years of experience accepted in lieu of degree. Must have at least 5 years of experience...SeniorWork at office- ...part of our high-quality team that delivers innovative solutions to key federal clients. We are currently seeking a Senior Program Protection Specialist to support our growing team.Responsibilities:· In close coordination with the COR, create and sustain initiatives that...Senior
$120k - $160k
...JOB DESCRIPTION: SAIC seeks an energetic and talented Senior Systems Engineer to join an exciting program and Systems Engineering and... ...or IC acquisition programs. Additional years of experience accepted in lieu of a degree. Candidate must be a US Citizen....SeniorContract workImmediate start$145k - $155k
.../SCI SECURITY CLEARANCE REQUIRED** Think strategically. Deliver technically. Shape the architecture. At D2 Tech Services, Senior Systems Engineers aren’t order‑takers — they’re the people who look at a complex, multi‑site enterprise and figure out how to make it better...SeniorImmediate start- ...Status: Position is active/funded and contingent on customer acceptance. Location: Springfield, Virginia (on site) Clearance... ...technology innovators. We are seeking a highly motivated Senior Systems Engineer to join our team. This position supports NGA's Compartmented...SeniorFull timeFor contractorsWork experience placementWork at officeLocal areaShift work
$92.5k - $171.5k
Job Title: Specialist, Systems Engineer - Integrated Protection Strategy Analyst Job Code: 41121Job Location: Springfield, VAJob Schedule: 5/8 - Mon - FriJob Description:L3Harris has an opening for an Integrated Protection Strategy Analyst in Springfield, VA to join a...Work at officeFlexible hours$135k - $216k
ResponsibilitiesWe are seeking an experienced Senior Systems Engineer with expertise in systems integration, testing, and enterprise engineering to support mission-critical GEOINT capabilities across the National System of Geospatial-Intelligence (NSG), Allied System of...SeniorContract workRemote workShift work$86.8k - $165.2k
...strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead... ...safer, more secure world.We have an exciting opportunity for a Senior Systems Operations Engineer supporting one of our premier programs...SeniorTemporary workFor contractorsWork experience placementWork at officeRemote workRelocationFlexible hours- ...public service and not for profit, we measure our success in the impact of our service. Position Summary ANSER is seeking a Senior Test Systems Engineer to support application, system, and integration testing activities across the National System of Geospatial-Intelligence...Senior
$80k - $120k
...Description Description SAIC is seeking a System Safety Engineer to provide critical safety engineering analysis and support... ...on experience and other factors. Overview SAIC accepts applications on an ongoing basis and there is no deadline....SeniorFor subcontractorInterim roleWork at officeRemote work$92.5k - $171.5k
Job Title: Specialist, Systems Engineering - Space Intelligence Analyst (Active TS/SCI w/ CI Poly Required)Job Code: 38747Job Location: Springfield... ...of action (COAs), and decision support information to senior leaders in support of the Space Warfighting Mission.The Space...Full timeFor contractorsWork at officeMonday to FridayFlexible hoursShift work$130k - $215k
...enterprise services, as well as world-class manufacturing and support capabilities.Job Summary We are looking for a Senior Principal Systems Engineer for our Naval Electronics systems engineering group. In this position you will provide technical leadership for engineering...SeniorFull timeContract workWork experience placementLocal areaFlexible hours$102.75k
Agency: SenateDepartment: Legislative BranchSalary: Starting at $102,745 Per year (AD 00)Dates: Open 07/24/2026 to 08/07/2026Schedule: Full-timeWork type: PermanentRelocation: FalsePosition ID: req1055Document ID: 878011800Grade: AD 00Job category: Information Technology...Senior$130k - $145k
Job DescriptionEverforth ECS Federal is seeking a Senior Systems Engineer to support a mission-focused federal IT program in Washington DC.Please... ...improvement for national security and law enforcement users.The Senior Systems Engineer will provide senior-level systems...SeniorContract work$150k - $185k
OverviewWANTED: A Senior Systems Engineer with demonstrated experience working with DoW acquisition and test and evaluation (T&E) communities. Desired experience in systems analysis, test and evaluation (T&E), engineering management, and working with innovative digital...SeniorTemporary workWork at office$130k - $145k
Job DescriptionEverforth ECS is seeking a Senior Systems Engineerto work in our Washington, DCoffice. Please Note: This position is contingent... ...upon contract award.We are seeking cleared Senior Systems Engineers to engineer, administer, monitor, secure, troubleshoot, and...SeniorContract work- DescriptionSAIC seeks a SailPoint Systems Engineer Senior to support the Department of Transportation’s Cybersecurity mission by joining a dedicated... ...implement the Identity Lifecycle Management (ILM)/Mandatory User Re-Authentication (MUR) solutions at the Department of...Senior
- Job TitleSenior Systems Engineer LevelLocationWashington, DC 20032 US (Primary)CategoryResearch,... ...DescriptionPrescient Edge is seeking an Senior Systems Engineer Level to support a federal... ...and development activities, guiding users in formulating requirements, advising alternative...SeniorContract work
- Position SummaryOdyssey Systems is seeking a Senior Systems Engineer to support advanced situational awareness and multi-domain operations (MDO) programs... ...test strategy, requirements traceability, and acceptance criteria.Facilitate technical reviews (SRR, PDR, CDR)...SeniorFull timeContract workLive out
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