Performance Load Test Engineer

Who We Are

Oasys International LLC (Oasys) is a fast-growing federal government contractor delivering high-quality technology consulting and professional services to civilian, defense, and homeland security agencies. We have been recognized on Inc. 5000’s list of the fastest-growing companies in America for five consecutive years and named a Best Places to Work in Virginia for the past two years.

Our success is driven by a talented team of technologists, consultants, engineers, and subject‑matter experts who support complex federal missions with integrity and excellence. At Oasys, we foster a collaborative, merit‑based culture that values continuous learning, professional growth, and work‑life balance. We are committed to creating an inclusive, engaging environment where employees are recognized for their contributions and empowered to build meaningful, long‑term careers.

Position Summary

The Performance Load Test Engineer is responsible for designing, executing, and optimize performance testing strategies for mission‑critical applications. The role requires SME level experience in load, stress, endurance, scalability, and capacity testing—along with strong analytical skills to identify performance bottlenecks and recommend solutions. This role works closely with development, QA, DevOps, and architecture teams to ensure applications meet performance SLAs, reliability standards, and user experience expectations.

NOTE: This role is contingent on the contract being awarded.

Primary Responsibilities

• Develop comprehensive performance test strategies, including objectives, scope, scenarios, success criteria, and workload models.
• Collaborate with business analysts, architects, and engineering teams to understand performance requirements, usage patterns, and system architecture.
• Identify critical user journeys and translate them into realistic performance test scenarios.
• Design and build performance test scripts using tools such as: JMeter, LoadRunner, Gatling, k6, NeoLoad
• Design realistic load models based on production metrics and anticipated growth.
• Monitor system behavior during tests using APM and monitoring tools such as: Dynatrace, New Relic, AppDynamics, Grafana, Prometheus, CloudWatch
• Analyze performance results to identify bottlenecks in application code, database queries, network latency, infrastructure, or cloud resources
• Provide clear, actionable recommendations to resolve performance issues.
• Solid understanding of CI/CD processes and build tools.
• Support operations and sustainment activities.
• All other duties as assigned by management.

Skills and Qualifications

• Bachelor’s degree in Computer Science or related field
• 10+ years of experience in performance testing, load testing, or performance engineering.
• Hands‑on experience with performance testing tools (JMeter, LoadRunner, Gatling, k6, NeoLoad).
• Strong scripting or programming skills (e.g., Perl, Python, Java, JavaScript, Bash).
• Experience with metrics collection and monitoring tools (APM solutions, logging platforms, dashboards).
• Strong SQL experience for database performance testing and query optimization.
• Solid understanding of application architecture (web, microservices, APIs)
• Experience working with AWS cloud environments
• Networking fundamentals and resource utilization (CPU, memory, I/O)
• Familiarity with CI/CD environments and integrating automated performance tests.
• Excellent analytical, diagnostic, and troubleshooting skills.

Certifications Preferred

• International Software Testing Qualifications Board (ISTQB)
• Certified Tester Foundation v4

Security Clearance Requirements

• Must be a U.S. Citizen
• Must have an active DoD Secret clearance.

Work Location

• Fairfax, VA – Corporate Headquarters (Hybrid)

Oasys is proud to be an equal opportunity employer for all protected groups, including protected veterans and individuals with disabilities.