We help teams simulate real traffic, prevent failures, and ship new features with confidence.
5.0
Headquartered in Delaware and operating in 25+ countries, PFLB unites 500+ 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.
Our clients' true stories
Preparing EdTech Software for Mass Student Registration
Load testing helped an EdTech platform handle 1,000+ simultaneous student registrations without failures during peak enrollment events.
Read full caseHow Load Testing Helped Texans Survive Power Outages During a Storm
Load testing validated Texas outage systems for 10,000 concurrent users and helped an energy provider stay responsive during severe storm conditions.
Read full caseI 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.
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.
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.
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.
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.
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.
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.
5.0
Get clear answers on performance risks, costs, and next steps for your system.
Boris
Principal Performance Engineer
Alima
Sales Rep
Request a personalized proof of concept, get a free load testing consultation, explore pricing, and learn from PFLB client cases.
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.
