SRE Lead

TechDigital Group; Torrance (CA); On-site; USD 130,000 - 170,000; Full time

Job summary

TechDigital Group is seeking a Performance Engineer to design, develop, and maintain performance test scripts for iOS mobile applications. You will build and execute load, stress, endurance, and scalability tests for mobile apps and backend services, using LoadRunner, JMeter, and XCUITest.

You will analyze metrics to identify bottlenecks and drive optimizations across the SDLC. The role collaborates with DevOps and product teams to define SLAs, SLOs, and KPIs, and to present findings to both

Qualifications

• Develop performance and test scripts to simulate real-world scenarios.
• Hands-on experience with LoadRunner and XCUITest (Apple’s native UI test automation framework).
• Experience with performance monitoring and APM tools is a plus.

Responsibilities

• Define and implement performance testing strategies and best practices.
• Build and execute load, stress, endurance, scalability, and volume tests for mobile apps and backend services.
• Develop automated performance testing solutions using industry-standard tools and frameworks.
• Analyze performance metrics to identify bottlenecks and recommend optimizations.
• Support performance testing throughout the SDLC and Agile release lifecycle.

Skills

Performance scripting

LoadRunner

XCUITest

Tools

JMeter

Job description

Job Description / Responsibilities

• Design, develop, and maintain performance test scripts for iOS mobile applications.
• Hands‑on experience with LoadRunner and XCUITest (Apple’s native UI test automation framework).
• Build and execute load, stress, endurance, scalability, and volume tests for mobile applications and supporting backend services.
• Develop automated performance testing solutions using industry-standard tools and frameworks.
• Analyze application, device, network, API, and backend performance metrics to identify bottlenecks.
• Validate mobile application performance across different iOS devices, operating system versions, and network conditions.

Performance Engineering

• Define and implement performance testing strategies and best practices.
• Establish performance baselines and benchmark application performance against defined targets.
• Identify, diagnose, and troubleshoot application performance issues across the mobile ecosystem.
• Provide recommendations for performance tuning and optimization.
• Support performance testing throughout the SDLC and Agile release lifecycle.

Stakeholder Collaboration

• Partner with development teams, architects, product owners, and business stakeholders to understand performance requirements.
• Define and document Service Level Agreements (SLAs), Service Level Objectives (SLOs), and performance KPIs.
• Present performance test results, findings, risks, and recommendations to technical and non‑technical stakeholders.
• Collaborate with DevOps and infrastructure teams to support performance testing environments.

Monitoring & Reporting

• Measure and report application response times, throughput, resource utilization, and user experience metrics.
• Develop performance dashboards and automated reporting mechanisms.
• Track performance trends and provide proactive recommendations for continuous improvement.
• Support production performance monitoring and root cause analysis when required.

Top 3 Skills Required for This Role

1. Develop performance and test scripts to simulate real‑world scenarios using LoadRunner & JMeter
2. Hands‑on experience with LoadRunner and XCUITest (Apple’s native UI test automation framework)
3. Experience with APM tools such as Dynatrace, AppDynamics, etc.