Performance Engineer (Software Engineer Sr Lead)

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Job Description

About the Role:

We are looking for a Performance Engineer to ensure our Digital One

Business apps are fast, reliable, and scalable under real-world conditions. In this role, you will design and execute performance tests, analyze system behavior, identify bottlenecks, and work closely with engineering teams to improve end-to-end performance across web, mobile, and backend systems.

You'll act as both a technical expert and a performance advocate, helping teams build products that meet strict performance, scalability, and reliability standards.

Responsibilities:

• Design, implement, and maintain performance, load, stress, and endurance tests
• Define and validate performance requirements, SLAs, and SLOs
• Analyze performance test results to identify bottlenecks across application, API, database, and infrastructure layers
• Collaborate with developers, SREs, and architects to diagnose and remediate performance issues
• Monitor application performance in production and support root-cause analysis of performance incidents
• Build and maintain performance testing frameworks, tools, and dashboards
• Integrate performance testing into CI/CD pipelines
• Establish performance baselines and track regressions over time
• Provide actionable recommendations to improve scalability, throughput, latency, and resource utilization
• Document findings and communicate results clearly to technical and non-technical stakeholders

Required Qualifications:

• Solid performance testing fundamentals
• Strong NeoLoad UI experience, including managing populations, scenarios and test data management
• Solid understanding of web and distributed systems (HTTP, APIs, microservices, caching, queues)
• Experience analyzing system metrics (CPU, memory, disk, network, latency, throughput) and troubleshooting issues
• Proficiency in at least one scripting language (JavaScript preferred)
• Understands CI/CD and modern architectures
• Good understanding of APM tools (Dynatrace, DataDog)
• Strong analytical and problem-solving skills
• Confident with correlation & test data
• Experience building and maintaining dashboards

Preferred Qualifications:

• Experience with cloud platforms
• Experience building a new performance testing strategy from the ground up
• Experience performance-testing large-scale consumer applications
• Knowledge of database performance tuning (SQL and/or NoSQL)
• Experience working in Agile or DevOps environments

What Success Looks Like:

• Performance issues are identified early, before reaching production
• Clear performance benchmarks and metrics guide engineering decisions
• Applications scale predictably and meet user experience expectations under load
• Engineering teams proactively consider performance as part of design and delivery

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EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here

For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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