Performance Testing
Customers Love

We help teams simulate real traffic, prevent failures, and ship new features with confidence.

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5.0

Trusted by Leading
Companies

Our Solutions

Performance Testing Services

We simulate peak traffic on e-commerce sites, SIP lines, APIs, and enterprise systems, then analyze performance to pinpoint bottlenecks you can fix.

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Load Testing Platform

We provide performance engineers with cloud-based load testing infrastructure for JMeter and AI-powered performance analysis.

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Data Masking

Protect sensitive data for testing and B2B data sharing. Mask sensitive information to prevent unauthorized access.

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At PFLB, We
Make It Reliable

Headquartered in Delaware and operating in 25+ countries, PFLB unites 150+ performance engineers on a mission to become the #1 performance engineering company, where reliability is guaranteed.

We partner with global leaders across ecommerce, banking, utilities, oil & gas, healthcare, and technology, delivering managed services, performance projects, and subscriptions to our load-testing platform.

Case Studies

Our clients' true stories

Preparing EdTech Software for Mass Student Registration

Jul 12, 2024

7 min read

Load testing helped an EdTech platform handle 1,000+ simultaneous student registrations without failures during peak enrollment events.

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How Load Testing Helped Texans Survive Power Outages During a Storm

Jun 13, 2024

8 min read

Load testing validated Texas outage systems for 10,000 concurrent users and helped an energy provider stay responsive during severe storm conditions.

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More Cases

PFLB Client’s Review

Testimonials from satisfied clients across various industries.

Rating: 5 out of 5 stars

I was highly satisfied working with PFLB. They're a fantastic one-stop shop for software performance, with everything you need—their platform and skilled engineers. I've used them three times to load test the College Board software before big updates, and it all went smoothly. Plus, I love that they store all the testing data, so we can track performance capacity over time.
Rating: 5 out of 5 stars

It was a pleasure working with PFLB, and I'd recommend them for performance testing. They quickly got up to speed with our complex software architecture and were super productive in setting up our load test environment in the cloud. They were really dedicated to improving our product with their strong expertise in performance optimization.
Rating: 5 out of 5 stars

PFLB was willing to work with a very small solopreneur without an enormous investment in capital. Their prices were reasonable and provided me with notable improvements to my php performance.
Rating: 5 out of 5 stars

PFLB did benchmarking tests on our database storage engine under standard and uncommon conditions, using specialized tools. Their analysis gave us valuable insights and recommendations to boost our product's performance. I highly recommend PFLB to anyone looking for an expert performance testing company.
Rating: 5 out of 5 stars

We smoothly moved over 30 JMeter projects to PFLB, and it's been a total game changer. It's given our team of 50+ remote performance engineers the ability to handle large-scale load tests every day with real ease.
Rating: 5 out of 5 stars

PFLB's testing team helped us successfully complete the FDA regulations with a great test coverage for the computer system validation (CSV) process at Illumina. I highly recommend Yuri Kovalov and his team—they're top-notch professionals in performance and load testing.
Rating: 5 out of 5 stars

PFLB has been Tinder's load testing provider for over 5 years, and it is a true pleasure working with them. They managed the entire performance engineering process for our app releases, helping us fix tons of performance issues. I highly recommend PFLB as a reliable vendor.