QA Performance Engineer - 17249

Seneca Resources Company, LLC; Vienna (VA); Hybrid; USD 131,808,768 - 157,597,440; Full time

Job summary

Seneca Resources is seeking an experienced QA Performance Engineer to join the Digital Delivery team responsible for building and supporting modern web and mobile applications, microservices, and scalable enterprise solutions.

The role involves designing, developing, and executing automated performance tests using NeoLoad, performing load and stress testing, and analyzing results to drive improvements across application and infrastructure layers. Hybrid work model with multiple locations.

Qualifications

• 4+ years of experience in QA Performance Engineering or Performance Testing.
• Hands-on experience with performance, load, stress, endurance and scalability testing.
• Experience with NeoLoad or comparable tools (JMeter, LoadRunner, Gatling, k6).
• Experience developing automated performance scripts using JavaScript or other scripting languages.
• Strong understanding of performance engineering principles, metrics, and bottleneck analysis.
• Experience with monitoring tools such as Azure Application Insights, Splunk, Dynatrace, AppDynamics.
• Experience using Postman for API validation and testing.
• Familiarity with Azure DevOps or similar test management platforms.
• Knowledge of SDLC/STLC, Agile/Scrum, DevOps, and CI/CD pipelines.
• Excellent written and verbal communication for stakeholder reporting.

Responsibilities

• Design, develop, and execute automated performance test scripts using NeoLoad or equivalent tools.
• Perform load, stress, endurance, scalability, and capacity testing on web and mobile apps.
• Create workload models and realistic test scenarios simulating production traffic.
• Define baselines, KPIs, and SLAs using production-like environments.
• Analyze test results to identify bottlenecks across app, infra, DB, and network layers.
• Collaborate with developers and DevOps to resolve performance issues and improve systems.
• Mentor junior QA engineers and contribute to testing process improvements.
• Integrate performance testing into Agile and CI/CD pipelines.

Skills

Performance Engineering

Performance Testing

NeoLoad (preferred)

Load Testing

Stress Testing

Endurance Testing

Scalability Testing

JavaScript scripting

Performance Test Automation

Root Cause Analysis

Azure DevOps

Azure Application Insights

Splunk

Postman

SDLC/STLC

Agile

CI/CD

Tools

NeoLoad

JMeter

LoadRunner

Gatling

k6

Postman

Azure DevOps

Azure Application Insights

Splunk

Job description

Location and Pay

Location: Vienna, VA, Winchester, VA, San Diego, CA, and Pensacola, FL (Hybrid – 3 days/week onsite)
Pay Rate: $46.00–$55.00/hour

Position Overview

We are seeking an experienced QA Performance Engineer to join the Digital Delivery team responsible for building and supporting modern web and mobile applications, microservices, and scalable enterprise solutions.

Key Responsibilities

• Design, develop, and execute automated performance test scripts using NeoLoad or similar performance testing tools.
• Perform load, stress, endurance, scalability, and capacity testing for enterprise web and mobile applications.
• Develop realistic workload models and test scenarios that accurately simulate production traffic.
• Define performance baselines, KPIs, and SLAs using production and production-like environments.
• Analyze performance test results and identify application, infrastructure, database, or network bottlenecks.
• Perform root cause analysis across multiple application layers and recommend performance improvements.
• Utilize monitoring and observability tools such as Azure Application Insights, Splunk, or equivalent platforms.
• Support performance testing throughout the SDLC by integrating testing into Agile and CI/CD pipelines.
• Create scalable, repeatable, and maintainable performance testing frameworks and automation solutions.
• Identify application dependencies and implement service virtualization or mocking strategies using WireMock or similar tools.
• Support and maintain performance testing environments to ensure consistent and reliable execution.
• Collaborate with developers, architects, DevOps, and QA teams to resolve performance issues.
• Review test plans, test scripts, and test results to ensure adherence to QA standards and best practices.
• Document defects, performance risks, and optimization recommendations while providing regular updates to stakeholders.
• Mentor junior QA engineers and contribute to continuous improvement of performance testing processes and standards.
• Support testing across distributed microservices and cloud-native architectures.

Required Qualifications

• 4+ years of experience in QA Performance Engineering or Performance Testing.
• Strong hands-on experience with:
  • Performance Testing
  • Load Testing
  • Stress Testing
  • Endurance Testing
  • Scalability Testing
• Experience with NeoLoad or comparable tools such as JMeter, LoadRunner, Gatling, or k6.
• Experience developing automated performance scripts using JavaScript or other scripting languages.
• Strong understanding of:
  • Performance Engineering principles
  • Performance metrics
  • Experience analyzing performance test results and identifying system bottlenecks.
  • Strong troubleshooting and root cause analysis skills across application and infrastructure layers.
  • Experience with monitoring tools such as:
    • Azure Application Insights
    • Splunk
    • Dynatrace
    • AppDynamics
    • Similar observability platforms
  • Experience using Postman for API validation and testing.
  • Experience with Azure DevOps or comparable test management platforms.
  • Working knowledge of:
    • SDLC
    • STLC
    • Agile/Scrum methodologies
    • DevOps practices
    • CI/CD pipelines
  • Excellent written and verbal communication skills with the ability to present findings and recommendations to technical and business stakeholders.

  Preferred Qualifications

  • Experience with WireMock or other service virtualization/mocking tools.
  • Experience working within microservices and distributed application environments.
  • Experience with containerized platforms such as Docker or Kubernetes.
  • Functional testing or SDET background.
  • Experience supporting cloud-native enterprise applications.

  Must-Have Skills

  • Performance Engineering
  • Performance Testing
  • NeoLoad (preferred) or equivalent tools
  • Load, Stress, Endurance, and Scalability Testing
  • JavaScript scripting
  • Performance Test Automation
  • Root Cause Analysis
  • Performance Metrics & Workload Modeling
  • Azure DevOps
  • Azure Application Insights or Splunk
  • Postman
  • SDLC/STLC
  • Agile
  • CI/CD

  Nice-to-Have Skills

  • WireMock
  • Service Virtualization
  • Microservices
  • Docker
  • Kubernetes
  • SDET experience
  • Cloud-native application testing

  About Seneca Resources

  Seneca Resources is a client‑driven provider of strategic Information Technology consulting services and Workforce Solutions to government and industry. Seneca Resources is a leading IT services provider with offices in Reston, Virginia, Alabama and Columbia, Maryland that serve clients throughout the United States. The key to our success lies within our strong corporate culture which drives our business. We challenge our staff through engaging work, and we reward our staff through competitive compensation, extensive professional training, and excellent opportunities for career advancement. In turn, we look for only the best and brightest to join our team. We are an Equal Opportunity Employer and value the benefits of diversity in our workplace.