Job Title: Senior Performance Engineer Location: New Carrollton, MD (On-site) Employment Type: Contract-to-Hire Security Requirement: US Citizenship Required Contact: Crystal.dinnocenti@systemone.com ROLE OVERVIEW System One is seeking a Senior Performance Engineer to join our team in New Carrollton, MD. This is a critical role focused on ensuring the scalability, reliability, and efficiency of large-scale applications across both mainframe and web-based environments. You will be responsible for the end-to-end performance lifecycle, from workload modeling to deep-dive bottleneck analysis. KEY RESPONSIBILITIES + Test Design & Execution: Lead the design, execution, and analysis of performance tests using LoadRunner to ensure applications meet rigorous scalability requirements. + Bottleneck Analysis: Identify system constraints and establish performance baselines through detailed analysis of application and infrastructure behavior. + Strategic Modeling: Build performance models and capacity planning frameworks to anticipate future growth and demand. + Cloud & Hybrid Testing: Conduct performance testing within cloud environments (AWS/Azure) and integrate results with web-based and mainframe systems. + Actionable Intelligence: Monitor system health using tools like AppDynamics or Splunk; translate complex findings into actionable recommendations for stakeholders. + Forecasting: Produce accurate workload projections and forecasts based on trend analysis and historical system data. REQUIRED QUALIFICATIONS + Experience: 8+ years of experience in Performance Engineering or a similar capacity. + Tools: Expert-level proficiency with LoadRunner (designing, executing, and analyzing). + Analysis: Strong background in bottleneck analysis, system tuning, and performance modeling. + Compliance: Deep understanding of SLAs, KPIs, and Non-Functional Requirements (NFRs). + Modern Tech Stack: Familiarity with monitoring tools (AppDynamics, Splunk) and cloud platforms (AWS/Azure). + Legacy Tech Stack: Practical knowledge of Mainframe performance systems in a web-integrated environment. + Education: Bachelor’s degree in Computer Science, Information Systems, or a related technical field. Why Join Us? This role offers the opportunity to work on mission-critical systems where your analysis directly impacts system architecture and long-term capacity strategy. System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M-M1 #LI-CD1 #DI-CD1 Ref: #851-Rockville-S1 System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.