36 performance test engineer jobs at 26 companies in Middletown, DE

4d
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Information Technology Specialist (Performance Test Engineer)
Fresno or Washington or Jacksonville or Chamblee or Chamblee or Fairview Heights or Covington or Lanham or Detroit or Kansas City or Saint Louis or Holtsville or Philadelphia or Guaynabo or San Juan or Memphis or Austin or Austin or Farmers Branch or Ogden or Kearneysville
$126k-$193k/yr OnsiteFull Time
IRS Office of Chief Counsel
IRS Office of Chief Counsel: Represents the IRS in tax litigation and legal matters.
1+ YOELead design and execution of performance/load/stress tests, integrate performance testing into CI/CD, develop scripts with LoadRunner and JMeter, proficiency in Java, Python, C, and cloud platforms (AWS, Azure). U.S. citizenship required.
GitHub, Amazon Web Services (AWS), Azure, LoadRunner, JMeter, Java, Python, C, AppDynamics, Splunk
1mo
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Development Test Engineer-System Performance
Hanover or Baltimore or Washington
$74k-$174k/yr OnsiteFull Time
Laitram
Laitram: Global manufacturer of industrial equipment and processing machinery.
3+ YOEBS in Mechanical Engineering, 3+ years engineering experience, strong mechanical aptitude, ability to lift 40 lbs, CAD and controls exposure; Inventor, Python, TwinCAT, or MATLAB experience preferred.
3D CAD, Inventor, Python, BECKHOFF Controls Platform, TwinCAT, MATLAB
1mo
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Development Test Engineer-System Performance - Jobs Laitram
Hanover or Baltimore or Washington
$74k-$174k/yr OnsiteFull Time
Laitram
Laitram: Global manufacturer of conveyor, automation, and access solutions.
3+ YOEB.S. in Mechanical Engineering, 3+ years engineering experience, strong mechanical aptitude, 3D CAD/Inventor exposure, ability to lift 40 lbs, excellent communication, problem-solving, and cross-functional collaboration skills; travel up to 10–20%.
3D CAD, Inventor, Python, BECKHOFF Controls Platform, TwinCAT, MATLAB
1mo
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Test Engineer (contingent 045)
Aberdeen Proving Ground, Maryland, United States
OnsiteFull Time
Systems Products and Solutions: Provides logistics and technical services to defense agencies.
7+ YOEBachelor's in engineering and 7 years T&E experience; experience with biometric collection devices, test plan development, conducting functional/integration/performance testing, technical reporting, and support for fielding; active or obtainable Secret clearance.
1mo
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Test Engineer 3
Newark, Delaware, United States
$122k-$203k/yr OnsiteFull Time
Hologic
HologicNASDAQ: HOLX: Develops medical technology for women's healthcare and diagnostics.
2+ YOEDesign and develop manufacturing test equipment and software; perform verification/validation; experience with electro-mechanical systems, PCB/soldering, analog/digital electronics, sensors; programming (C/C++, .NET, LabVIEW, Visual Basic, PLC); SolidWorks; knowledge of FDA and manufacturing quality methods.
Microsoft Office, SolidWorks, C, C++, .NET, LabVIEW, CVI, Visual Basic, PLC Ladder Logic
2mo
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Lead Software Test Engineer
Exton or Austin
$123k-$205k/yr HybridFull Time
Cox Enterprises
Cox Enterprises: Providing global communications, automotive services, and media solutions.
6+ YOEBachelor's degree and 6+ years of test automation experience; strong in Playwright, RestSharp, Pact.NET, xUnit; performance testing with JMeter or k6; API/integration testing; AI tooling experience.
Playwright, RestSharp, Pact.NET, xUnit, JMeter, k6, TestContainers
2w
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Principal / Senior Modeling Simulation & Performance Analysis Systems Engineer
Baltimore, Maryland, United States
$109k-$204k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
5+ YOEU.S. citizen with active Secret clearance, modeling & simulation experience, programming in Python and C/C++, scripting in Linux/Windows, HPC and statistics, DoD test experience; degree plus relevant years of experience required.
Python, C/C++, Linux, Windows, JMP, R
3w
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Quality Engineer- Test Automation
Wayne, Pennsylvania, United States
$95k-$156k/yr HybridFull Time
CDM Smith
CDM Smith: Global engineering and construction firm delivering infrastructure solutions.
5+ YOE5+ years QA experience with test automation across web, API, mobile, and performance; strong Node.js/TypeScript skills; experience with cloud (GCP/GKE), Kubernetes, CI/CD, AI-assisted testing tools; BS degree preferred.
Playwright, Jest, Maestro, Artillery, Node.js, TypeScript, JavaScript, Google Cloud Platform (GKE), Kubernetes, Docker, React Native, YAML, CI/CD
1mo
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Software Development Engineer SDET
Dresher or Greensboro or Newton or Lake Mary or Boston or Philadelphia or Charlotte or Baxter or Orlando
$120k-$150k/yr OnsiteFull Time
Ascensus
Ascensus: Administers tax-advantaged retirement and education savings plans.
Experienced SDET or software engineer with strong test automation skills (Selenium, Playwright, Cucumber), proficiency in C# or Java and scripting (Python, PowerShell, Perl, JavaScript), DB testing (Sybase, SQL Server, Oracle), API/microservices and performance testing.
Selenium, Cucumber, Playwright, C#, Java, Python, PowerShell, Perl, JavaScript, Sybase, SQL Server, Oracle, BlazeMeter, JMeter, Taurus
1mo
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Field Service Engineer
Harrisburg or Lancaster or Philadelphia or West Chester
FieldFull Time
Johnson & Johnson
Johnson & JohnsonNYSE: JNJ: Global healthcare providing pharmaceuticals and medical technologies.
Field-based engineer to install, service, and repair medical devices; strong troubleshooting, MS Office and test-equipment proficiency, valid US driver's license, ability to travel frequently and perform physical tasks.
Microsoft Office, SAP Field Service Management, Service Management System, digital multimeter
1mo
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Process Engineer (Exton, PA, US, 19341)
Exton, Pennsylvania, United States
$80k-$100k/yr OnsiteFull Time
AMETEK
AMETEKNYSE: AME: Manufacturer of electronic instruments and electromechanical devices.
Bachelor's degree in engineering preferred; support NPI/DFM, develop/execute test protocols, perform failure investigations, conduct SPC/Gauge R&R, and apply Lean/Six Sigma for continuous improvement.
6d
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Cloud Engineer, Specialist
Malvern or Charlotte
HybridFull Time
Vanguard
Vanguard: Provides mutual funds, ETFs, and investment management services.
5+ YOE5+ years experience, undergraduate degree or equivalent, experience with AWS ECS, Java/Spring Boot, TypeScript/Node.js, GraphQL federation, performance testing and production support.
AWS ECS, Java, Spring Boot, TypeScript, Node.js, GraphQL, Locust, Fast4J, Claude Code
3d
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Drupal Backend Engineer, (Consultant, Engineering & Technical Services)
Baltimore or Alabama or California or Delaware or District of Columbia or Florida or Georgia or Maryland or New Jersey or New York or North Carolina or Pennsylvania or South Carolina or Tennessee or Texas or Virginia or West Virginia
$96k-$133k/yr RemoteFull Time
Fearless
Fearless: Digital services firm delivering IT solutions for government agencies.
5+ YOE5+ years Drupal development with Drupal 11, ability to build custom modules/APIs, security and performance remediation, experience with DDEV/Docker, testing (Cypress, PHPUnit), Git workflows, and ability to obtain Public Trust clearance.
Drupal, DDEV, Docker, Xdebug, Cypress, PHPUnit, Git, GitHub Copilot, VS Code, PHPStorm, Jira, Confluence, Slack, Zoom, Microsoft Teams, Twig
3d
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Senior Thermal Protection System Engineer
Huntsville or King of Prussia or Littleton or Sunnyvale
$86k-$170k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Perform thermal design and analysis for TPS using tools like NX Thermal; experience in thermophysics, heat transfer, fluid mechanics, aerodynamics, TPS sizing/testing; active Top Secret clearance and US citizenship required.
NX Thermal, FIAT, ACE, AHEAT, ATAC, CMA
2mo
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Quality Engineer II
Philadelphia, Pennsylvania, United States
$72k-$119k/yr OnsiteFull Time
Elsevier
ElsevierLondon Stock Exchange: REL: Provides scientific, technical, and medical research information and analytics.
Design, develop, and maintain automated test frameworks using Selenium or Playwright; RESTful API testing; CI/CD/AWS; TDD; accessibility and performance testing; JavaScript/TypeScript.
Selenium, Playwright, JavaScript, TypeScript, REST API testing, CI/CD, AWS, Jenkins, GitHub Actions, BrowserStack, Axe, Pa11y, WAVE, K6, Locust, JMeter
2mo
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Quality Engineer II
Philadelphia, Pennsylvania, United States
$72k-$119k/yr OnsiteFull Time
RELX
RELXLondon Stock Exchange: REL: Provides information-based analytics and decision tools for professional customers.
Design, develop, and maintain automated test frameworks; REST API testing; CI/CD/AWS; JavaScript/TypeScript; Selenium or Playwright; TDD; accessibility; performance/load testing.
Selenium, Playwright, JavaScript, TypeScript, RESTful API testing, CI/CD, AWS, Jenkins, GitHub Actions, BrowserStack, Axe, Pa11y, WAVE, K6, Locust, JMeter
1w
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Nuuly iOS Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Urban Outfitters
Urban OutfittersNASDAQ: URBN: Multi-brand retail operator of lifestyle apparel and home goods.
3+ YOE3-5 years iOS experience; strong Swift, UIKit, SwiftUI; experience with RESTful APIs, GitHub, multithreading, performance optimization, testing, and Agile; strong communication skills.
Swift, UIKit, SwiftUI, GitHub
1mo
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Structural Associate Principal
Mount Laurel or Philadelphia
$105k-$150k/yr OnsiteFull Time
ECS Limited
ECS Limited: Provides geotechnical, environmental, and facilities engineering consulting services.
8+ YOEBachelor's or Master's in civil/architectural/structural engineering, P.E. required, 8+ years structural consulting experience, strong codes knowledge (IBC/ASCE/ACI/AISC), project management, technical writing, and ability to perform field testing and lift up to 40 lb.
GPR
3mo
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Commissioning Field Specialist I
Manassas or Richmond or Norfolk or Washington or Charlotte or Buffalo or Philadelphia or Shreveport or Dallas or Cedar Rapids or South Bend or Columbus or Albuquerque or Las Cruces or United States or Abilene or Phoenix or Las Vegas or Reno or Cheyenne or Salt Lake City or Denver or Portland or Seattle
$100k-$120k/yr FieldFull Time
DLB Associates
DLB Associates: Provides engineering and commissioning services for mission-critical data centers.
5+ YOEBachelor's in engineering/construction or equivalent experience; ability to perform on-site commissioning, testing, troubleshooting; up to 75% domestic travel; valid driver’s license and REAL ID for air travel; NFPA70E/OSHA certification as required.
Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Teams
1w
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Experimental Ballistics Technician
Aberdeen, Maryland, United States
OnsiteFull Time
Bowhead
Bowhead: Federal government contracting and professional services provider.
Perform setup, instrumentation, and execution of indoor/outdoor ballistics tests; lift up to 50 lbs; follow SOPs; maintain Secret clearance and required on-the-job certifications.
Solidworks, Microsoft Excel, Microsoft Word, Oscilloscope