Mobile Performance Test Engineer (NeoLoad, API, UI, Mobile)

📍 Job Overview

Job Title: Mobile Performance Test Engineer (NeoLoad, API, UI, Mobile)

Company: Capgemini

Location: New York, NY, United States

Job Type: Full-time

Category: Quality Assurance / Performance Engineering

Date Posted: 2026-05-06

Experience Level: Mid-Level (2-5 years)

Remote Status: On-site

🚀 Role Summary

• Drive the performance testing lifecycle for critical mobile, web UI, and API applications, ensuring robust scalability and stability.

• Develop, maintain, and execute performance test scripts using NeoLoad, a leading performance testing tool.

• Collaborate closely with cross-functional teams, including development, DevOps, and business stakeholders, to identify and resolve performance bottlenecks.

• Integrate performance testing seamlessly into CI/CD pipelines to enable continuous performance monitoring and validation.

• Analyze complex performance test results, providing actionable insights and recommendations for system optimization and capacity planning.

📝 Enhancement Note: This role is positioned as a specialized performance engineering function within the broader IT and technology consulting sector served by Capgemini. The emphasis on NeoLoad, API, UI, and mobile testing, coupled with CI/CD integration, indicates a need for a candidate proficient in modern, agile testing methodologies. The on-site requirement in New York City suggests potential client-facing responsibilities or integration within a dedicated on-site project team.

📈 Primary Responsibilities

• Design and execute comprehensive performance testing strategies, including load, stress, spike, and endurance tests, tailored to application architecture and business requirements.

• Develop and maintain high-quality, reusable performance test scripts using NeoLoad, ensuring accurate simulation of user behavior and application workflows for API (REST/SOAP), Web UI, and Mobile (Android/iOS) platforms.

• Analyze performance test results meticulously, identifying root causes of bottlenecks, memory leaks, and other performance degradations across different application layers.

• Collaborate with development, DevOps, and infrastructure teams to troubleshoot and resolve performance issues, providing clear technical guidance and support.

• Integrate performance testing tools and processes into CI/CD pipelines (e.g., Jenkins, GitLab) to automate test execution, reporting, and feedback loops.

• Define and monitor key performance indicators (KPIs) and Service Level Objectives (SLOs) for applications, ensuring alignment with business expectations and production readiness standards.

• Generate detailed performance test reports, summarizing findings, performance metrics, bottleneck analysis, and actionable recommendations for performance tuning and optimization.

• Support capacity planning initiatives by providing data-driven insights into application performance under various load conditions.

• Stay abreast of emerging performance testing tools, methodologies, and industry best practices, recommending advancements to the testing framework.

📝 Enhancement Note: The responsibilities highlight a hands-on role requiring deep technical expertise in performance testing tools and methodologies, specifically NeoLoad. The emphasis on collaboration and CI/CD integration points to a candidate who can work effectively in an agile environment and contribute to a DevOps culture. The need for analysis and reporting underscores the importance of strong analytical and communication skills.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent practical experience.

Experience: 2-5 years of progressive experience in software quality assurance with a specialization in performance testing.

Required Skills:

• Strong hands-on experience with NeoLoad for designing, scripting, and executing performance tests.

• Solid understanding of performance testing methodologies, including load, stress, spike, and endurance testing principles.

• Proven experience in performance testing of API services (REST/SOAP).

• Experience with performance testing of Web UI applications.

• Experience with performance testing of Mobile applications (Android/iOS).

• Familiarity with monitoring and Application Performance Monitoring (APM) tools (e.g., Dynatrace, AppDynamics, New Relic) and key performance metrics.

• Proficient in understanding and working with web protocols and data formats such as HTTP, JSON, and XML.

• Experience with CI/CD tools such as Jenkins or GitLab for integrating performance tests into automated workflows.

Preferred Skills:

• Experience with other performance testing tools (e.g., JMeter, LoadRunner).

• Knowledge of cloud platforms (AWS, Azure, GCP) and their impact on application performance.

• Scripting skills in languages like Python or Java for test script enhancement or automation.

• Familiarity with containerization technologies like Docker and Kubernetes.

• Understanding of database performance tuning concepts.

📝 Enhancement Note: The required skills clearly indicate a need for deep practical experience with NeoLoad and a broad understanding of different application layers (API, UI, Mobile). The preferred skills suggest a candidate who is forward-thinking and has exposure to modern cloud and containerization technologies, which are increasingly relevant in performance engineering.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrable experience in designing and executing performance test strategies for complex applications.

• Case studies showcasing successful identification and resolution of performance bottlenecks using NeoLoad.

• Examples of performance test scripts developed in NeoLoad, highlighting efficiency and maintainability.

• Documentation of performance test results, including detailed analysis, performance metrics, and actionable recommendations.

Process Documentation:

• Detail your approach to performance test script development, including data parameterization, correlation, and transaction management within NeoLoad.

• Outline your methodology for analyzing performance test results, including identifying key performance indicators (KPIs), interpreting graphs, and pinpointing root causes of issues.

• Describe your process for collaborating with development and DevOps teams to address performance defects and validate fixes.

• Provide examples of how you have contributed to capacity planning and production readiness through performance testing.

📝 Enhancement Note: For a performance engineering role, a portfolio is critical. Candidates should be prepared to showcase their NeoLoad expertise through tangible examples of scripts, test plans, and detailed analysis reports. The emphasis on process documentation encourages candidates to articulate their systematic approach to performance testing and problem-solving.

💵 Compensation & Benefits

Salary Range: $70,000 - $93,767 annually.

Benefits:

• Comprehensive, non-negotiable benefits package for regular, full-time employees.

• Paid time off based on employee grade (A-F), including:

  • Vacation: 12-25 days, depending on grade.
  • Company-paid holidays.
  • Personal Days.
  • Sick Leave.

• Medical, dental, and vision coverage.

• Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada).

• Life and disability insurance.

• Employee assistance programs.

• Other benefits as provided by local policy and eligibility.

Working Hours: The role is listed as full-time, implying a standard 40-hour work week. While on-site, specific working hours may be flexible within business operations needs, allowing for focused performance analysis and collaboration.

📝 Enhancement Note: The provided salary range is specific to the New York, NY location. It's essential to note that this range is a guideline, and the final offer will depend on various factors including candidate experience, qualifications, and market conditions. The benefits package is comprehensive, typical for a large consulting firm like Capgemini, and includes standard health, retirement, and time-off provisions.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology Consulting and Services. Capgemini is a global leader in consulting, digital transformation, technology, and engineering services. They partner with organizations to accelerate their dual transition to digital and sustainable operations.

Company Size: Large enterprise (over 340,000 employees globally). This scale offers opportunities for diverse project experiences and career mobility.

Founded: Capgemini has a strong heritage spanning over 55 years, indicating a stable and established organization with deep industry knowledge and client relationships.

Team Structure: As a large consulting firm, the Performance Test Engineer will likely be part of a project-based team. This team will include other testing professionals, developers, project managers, and potentially client-side IT personnel. The reporting structure will typically be project-specific, with a lead engineer or project manager overseeing the team's deliverables. Collaboration is key, involving close interaction with development and DevOps teams to ensure seamless integration of performance testing into the software development lifecycle.

Methodology: Capgemini emphasizes a client-centric approach, leveraging agile methodologies and a strong focus on digital transformation. For performance engineering, this likely translates to an iterative process of test design, execution, analysis, and feedback, often integrated within DevOps practices and CI/CD pipelines. Data-driven decision-making is paramount, with performance metrics serving as the foundation for optimization recommendations.

Company Website: https://www.capgemini.com/

📝 Enhancement Note: Capgemini's extensive global presence and diverse service offerings suggest that this role could involve working on a variety of client projects across different industries. The company's commitment to digital and sustainability transitions implies a forward-looking approach to technology adoption and process improvement, which would be reflected in its performance engineering practices.

📈 Career & Growth Analysis

Operations Career Level: This role is classified as a Mid-Level position, typically requiring 2-5 years of specialized experience. It signifies a step beyond entry-level testing, demanding independent execution of tasks, script development, and initial analysis of results. The engineer is expected to contribute significantly to project deliverables and collaborate effectively with cross-functional teams.

Reporting Structure: The engineer will likely report to a Performance Test Lead, QA Manager, or Project Manager within a specific client project or Capgemini's internal quality assurance practice. Collaboration will be extensive with development teams, DevOps engineers, and solution architects.

Operations Impact: Performance test engineers play a crucial role in ensuring the stability, scalability, and reliability of applications, directly impacting user experience, system availability, and operational costs. By identifying and mitigating performance bottlenecks, they prevent potential downtime, reduce infrastructure overhead, and ensure applications can handle peak loads, thereby safeguarding revenue and customer satisfaction.

Growth Opportunities:

• Specialization: Deepen expertise in specific performance testing tools (e.g., NeoLoad certifications) or performance analysis techniques.

• Leadership: Progress to a Senior Performance Test Engineer or Performance Test Lead role, taking on more complex projects, mentoring junior engineers, and contributing to test strategy development.

• Broadening Skills: Gain exposure to other QA disciplines, automation testing, or DevOps practices to become a more versatile engineer.

• Client Engagement: Develop consulting and client management skills, potentially moving into roles focused on performance engineering advisory services.

• Cross-Functional Development: Explore opportunities in Site Reliability Engineering (SRE) or performance-focused architecture roles.

📝 Enhancement Note: Capgemini's structure as a large consulting firm offers diverse career paths. This role provides a solid foundation in performance engineering, with clear avenues for technical specialization, leadership development, and broader skill acquisition within the consulting domain.

🌐 Work Environment

Office Type: This is an on-site role, requiring the engineer to work from Capgemini's New York City office. This environment is likely to be a professional corporate setting designed to facilitate collaboration among project teams and client interactions.

Office Location(s): New York, NY (specific address not provided, but likely in a business district). This location offers access to a major metropolitan hub with extensive public transportation options.

Workspace Context:

• The workspace will be collaborative, encouraging interaction with fellow engineers, developers, and project managers.

• Access to necessary hardware, software, and potentially specialized testing environments will be provided.

• The environment is expected to support the use of performance testing tools and monitoring dashboards.

• Opportunities for knowledge sharing sessions and team meetings will be regular.

Work Schedule: Standard business hours (e.g., 9 AM to 5 PM EST) are expected, with potential for occasional flexibility or extended hours during critical testing phases or client-specific deadlines. The on-site nature allows for direct, face-to-face collaboration which is often crucial for rapid issue resolution in performance testing.

📝 Enhancement Note: The on-site requirement in New York City suggests the role may involve direct client engagement or working within a dedicated project team hub. Candidates should be prepared for a structured office environment and the benefits of in-person collaboration for complex problem-solving.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A recruiter will likely conduct an initial phone screen to assess basic qualifications, role understanding, and cultural fit.

• Technical Interview(s): Expect one or more technical interviews focusing on performance testing concepts, NeoLoad expertise, API/mobile testing scenarios, and problem-solving skills. You may be asked to discuss past projects and challenges.

• Case Study/Scenario: A practical exercise or scenario-based question might be presented, requiring you to outline a performance test strategy or analyze a hypothetical performance issue.

• Hiring Manager/Team Interview: An interview with the hiring manager or members of the relevant team to further assess technical depth, collaboration skills, and alignment with Capgemini's values.

• Final Round: Potentially a final discussion with a senior leader or client representative.

Portfolio Review Tips:

• NeoLoad Mastery: Be prepared to demonstrate your NeoLoad proficiency. Have specific examples of complex scripts you've developed, challenges you've overcome, and how you've leveraged NeoLoad's features for effective testing.

• Data-Driven Analysis: Showcase your ability to interpret performance metrics. Present charts and graphs from past projects, clearly explaining what they mean and the actions taken based on the insights.

• Problem-Solving Narratives: For each portfolio piece, frame it as a story: the challenge, your approach using specific tools and methodologies (NeoLoad, API testing, etc.), the solution, and the measurable impact (e.g., performance improvement, bottleneck resolved).

• CI/CD Integration: If possible, include examples or descriptions of how you've integrated performance testing into CI/CD pipelines, highlighting automation and efficiency gains.

• Conciseness and Clarity: Present your portfolio items clearly and concisely. Focus on the most impactful projects that align with the job requirements.

Challenge Preparation:

• Performance Test Design: Practice outlining a performance test strategy for a given scenario (e.g., a new e-commerce feature, a mobile app update). Consider test objectives, scenarios, metrics, tools, and environment setup.

• Bottleneck Identification: Be ready to discuss common performance bottlenecks in APIs, web applications, and mobile apps, and how you would diagnose them using tools like NeoLoad and APM solutions.

• NeoLoad Scripting Scenarios: Prepare to discuss how you would script specific user flows in NeoLoad, including handling dynamic data, authentication, and error conditions.

📝 Enhancement Note: The interview process for a specialized role like this will heavily focus on practical skills. A strong portfolio demonstrating hands-on NeoLoad experience and a clear understanding of performance analysis is crucial. Candidates should be ready to articulate their thought process and problem-solving approach in detail.

🛠 Tools & Technology Stack

Primary Tools:

• NeoLoad: The core tool for performance test scripting, execution, and analysis. Proficiency is mandatory.

• API Testing Tools: Familiarity with tools used for API testing (e.g., Postman, SoapUI) as performance testing often starts at the API layer.

• Mobile Testing Platforms: Experience with tools or frameworks for mobile performance testing (e.g., Appium for basic automation, specialized mobile profiling tools).

Analytics & Reporting:

• APM Tools: Experience with Application Performance Monitoring tools such as Dynatrace, AppDynamics, New Relic, or similar platforms for real-time monitoring and in-depth analysis of application behavior under load.

• Data Analysis Software: Proficiency in analyzing data from NeoLoad and APM tools, potentially using Excel, specialized reporting add-ons, or data visualization tools.

• Dashboarding Tools: Familiarity with creating dashboards (e.g., in APM tools, Grafana) to visualize performance trends and communicate results to stakeholders.

CRM & Automation:

• CI/CD Tools: Jenkins, GitLab CI/CD, Azure DevOps, or similar for integrating performance tests into automated build and deployment pipelines.

• Collaboration Tools: Jira, Confluence, Microsoft Teams, Slack for team communication, task tracking, and documentation.

• Operating Systems: Strong command-line proficiency in Linux/Unix environments for server-side monitoring and troubleshooting.

📝 Enhancement Note: The technology stack centers around NeoLoad as the primary performance testing tool. However, a comprehensive understanding of the surrounding ecosystem, including APM tools, CI/CD pipelines, and Linux environments, is essential for effective performance engineering in modern IT landscapes.

👥 Team Culture & Values

Operations Values:

• Quality & Reliability: A strong commitment to ensuring the stability and reliability of applications through rigorous performance testing.

• Data-Driven Insights: Emphasis on using performance metrics and analysis to guide decisions and drive improvements.

• Collaboration & Teamwork: Working effectively with development, DevOps, and business teams to achieve shared goals.

• Continuous Improvement: A proactive approach to identifying and implementing enhancements in testing processes, tools, and methodologies.

• Client Focus: Understanding and meeting client performance requirements and business objectives.

Collaboration Style:

• Cross-Functional Integration: The role requires seamless collaboration with development teams to understand application architecture and resolve issues, and with DevOps for CI/CD integration and environment management.

• Proactive Communication: Regularly sharing test progress, findings, and potential risks with project stakeholders.

• Constructive Feedback: Providing and receiving feedback constructively to improve application performance and testing processes.

• Knowledge Sharing: Contributing to a team environment where best practices and lessons learned are shared among colleagues.

📝 Enhancement Note: Capgemini, as a large consulting firm, likely fosters a culture of professionalism, client focus, and continuous learning. For this role, these values translate into a dedication to delivering high-quality, reliable software performance and working collaboratively within project teams to achieve client success.

⚡ Challenges & Growth Opportunities

Challenges:

• Complex Application Architectures: Understanding and testing performance across distributed systems, microservices, and cloud-native applications can be complex.

• Dynamic Environments: Performance testing in constantly evolving CI/CD environments requires adaptability and robust automation strategies.

• Realistic Simulation: Accurately simulating real-world user behavior and load patterns, especially for mobile applications, can be challenging.

• Root Cause Analysis: Pinpointing the exact source of performance issues in large, interconnected systems requires strong analytical skills and familiarity with various monitoring tools.

Learning & Development Opportunities:

• Tool Specialization: Opportunities to become a NeoLoad expert, potentially leading to certifications or advanced training.

• Performance Engineering Best Practices: Deepen knowledge in areas like performance tuning, scalability patterns, and architectural best practices.

• DevOps and Cloud: Gain exposure and expertise in DevOps principles, cloud technologies (AWS, Azure, GCP), and containerization (Docker, Kubernetes) as they relate to performance.

• Consulting Skills: Develop client-facing communication, presentation, and advisory skills, which are valuable for career progression within Capgemini.

• Industry Certifications: Pursue relevant certifications in performance engineering, cloud, or DevOps.

📝 Enhancement Note: The challenges presented are typical for performance engineers in modern IT landscapes. Capgemini's extensive client base and focus on digital transformation provide ample opportunities for engineers to tackle these challenges and grow their expertise in cutting-edge technologies and methodologies.

💡 Interview Preparation

Strategy Questions:

• "Describe your approach to designing a performance test strategy for a new mobile application feature, considering NeoLoad as your primary tool."

  • Preparation: Outline steps from understanding requirements, defining scenarios, identifying critical user journeys, selecting metrics, and planning test execution. Emphasize NeoLoad's capabilities in mobile testing.

• "How would you identify and troubleshoot a performance bottleneck in a REST API service that is experiencing high latency?"

  • Preparation: Discuss using NeoLoad to isolate API calls, analyzing response times, correlating with server-side metrics (CPU, memory, network), and using APM tools for deeper diagnostics.

• "Walk me through a time you successfully integrated performance testing into a CI/CD pipeline. What were the challenges and how did you overcome them?"

Company & Culture Questions:

• "Why are you interested in Capgemini and this specific role?"

  • Preparation: Research Capgemini's values, recent projects, and its position in the technology consulting industry. Connect your skills and career aspirations to the company's mission and the role's responsibilities.

• "How do you collaborate with developers and DevOps teams to resolve performance issues?"

  • Preparation: Provide examples of clear communication, proactive engagement, and shared responsibility in addressing performance defects. Highlight your understanding of the development lifecycle.

• "How do you measure the success of your performance testing efforts and communicate results to stakeholders?"

Portfolio Presentation Strategy:

• NeoLoad Script Showcase: Select 1-2 representative NeoLoad scripts. Be ready to explain their structure, key logic (e.g., handling dynamic data), and how they address specific testing objectives.

• Performance Analysis Case Study: Present a case study detailing a performance issue you identified and helped resolve. Use charts and metrics to illustrate the problem, your analysis, the solution implemented, and the resulting improvement. Quantify the impact whenever possible.

• CI/CD Integration Example: If applicable, describe or show how performance tests were automated within a pipeline. Focus on the setup, trigger mechanisms, and reporting outputs.

• Concise and Impactful: Aim for a presentation that is clear, concise, and highlights your most significant contributions and technical skills relevant to the role.

📝 Enhancement Note: Interview preparation should focus on demonstrating hands-on NeoLoad expertise, a systematic approach to performance analysis, and strong collaboration skills. Candidates should be ready to articulate their technical process and the business impact of their work.

📌 Application Steps

To apply for this operations position:

• Submit your application through the Capgemini careers portal via the provided URL.

• Resume Optimization: Tailor your resume to clearly highlight your specific experience with NeoLoad, API, UI, and mobile performance testing. Quantify your achievements (e.g., "Reduced API response time by X%," "Identified and resolved Y critical performance bottlenecks").

• Portfolio Preparation: Compile examples of your NeoLoad scripts, performance test plans, detailed analysis reports, and any case studies showcasing performance improvements or bottleneck resolutions. Be ready to present key items during interviews.

• Technical Preparedness: Review core performance testing concepts, NeoLoad functionalities, common performance bottlenecks across different application tiers, and CI/CD integration principles. Practice articulating your thought process for troubleshooting.

• Company Research: Familiarize yourself with Capgemini's services, values, and recent projects, particularly in the digital transformation and technology consulting space. Understand how performance engineering contributes to their client offerings.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.