Company lists · Data refreshed November 2026

Top 25 Web performance engineers worldwide

RevenueBase identified 393 company matches for web performance engineers worldwide as of November 2026 and tracks 2,615 professional contacts across them, including 618 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for web performance engineers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for web performance engineers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
393Companies
2,615Contacts tracked
618Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest web performance engineers worldwide

Ranked by team size
Top 25 of 393 company matches for web performance engineers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSanta Clara, United StatesHQ recorded Nov 6, 2026501-1,000445 contacts →

Exact match

“Cavisson Systems Inc, having its headquarter in Santa Clara, CA (USA), is a leading provider of performance intelligence platform that ensures exceptional customer experience and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500178 contacts →

Exact match

“Catchpoint is the Internet Resilience Company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-200172 contacts →

Exact match

“Avekshaa Technologies is a pioneer in Application Performance Engineering, Application Performance Management, and Digital Quality Assurance, solving the performance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Speed Kit is the all-in-one page speed tool for sites with 300+ million users.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWaltham, MA, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Yottaa is the ultimate eCommerce performance booster for brands and retailers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchPune, IndiaHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“RefactorQ is an engineering-led technology consulting company helping organizations transform, build, modernize and optimize technology for measurable business outcomes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMogi Das Cruzes, BrazilHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Somos um grupo de tecnologia que busca oferecer a melhor performance na web por meio de soluções complementares e inovadoras.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Há mais de 10 anos, realizamos projetos que nos consolidam como uma solução completa e eficiente em segurança e desempenho web.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchParis, FranceHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Fasterize is much more than just a web optimization solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSofia, BulgariaHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“We believe everyone should have an easy way to achieve world-class performance for their website.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMilan, ItalyHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Kleecks is an innovative SaaS platform that optimises performance marketing activities, improves website health and speed in real-time, and has a significant impact on businesses…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCanterbury, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Identify business-critical digital Customer Experience and website performance issues, faster and quickly prioritise fixes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMinnetonka, MN, United StatesHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“Our mission is to give our customers cutting edge features such as “image matching” within a real browser, element level trend charting, and video capture of website and web…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBray, IrelandHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“At Data Edge we provide expertise, products and services to Enterprise, Technology and Government.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“ITRS Uptrends improves the digital website experience for more than users worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchThoraipakkam Chennai, SingaporeHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Innoura is a next-generation Specialized IT solutions company, providing niche solutions in Performance, Availability, Scalability and Reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLyon, FranceHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Phenisys est une société de conseil et d’expertise spécialisée dans la mesure de la performance applicative et réseau.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUtrecht, NetherlandsHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“MeasureWorks commits to high performance and reliability of your websites and applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPuerto De La Cruz, SpainHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“In Optimanova we understand Web Optimisation as a way to take the best advantage from your website.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Over 300 million visits are optimized by Touchless every month, with just one script tag.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMountain View, CA, United StatesHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“At PFLB, we're dedicated to helping technology teams scale and optimize their applications with our robust performance testing platform and professional engineering services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMinnetonka, MN, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Performetriks makes mission-critical systems fast, observable, and resilient.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSubang Jaya, MalaysiaHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“Fishermen Analytics is a Web Optimisation company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchStockholm, SwedenHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Stockholm-started k6, simplifies and automate load and performance testing for agile software development teams.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Merj is your partner for SEO and AEO.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 393 web performance engineers worldwide

See the full list, filter by size, metro and specialty, and access 618 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Web performance engineers worldwide at a glance

As of Nov 6, 2026
23.6%Verified-email coverage
6.7Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
290
11-50
76
51-200
16
201-500
6
501-1,000
1
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for web performance engineers are linked below.
What qualifies
Company records worldwide whose business descriptions match “web performance engineers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 618 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Web performance engineers by location

3 lists · largest first

Every Web performance engineers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “web performance engineers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many web performance engineers are there worldwide?

RevenueBase identified 393 company matches for web performance engineers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Cavisson Systems, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most web performance engineers?

The United States leads with 75 companies, followed by the United Kingdom (29) and India (25). Every web performance engineers list by country and city is linked on this page.

Which city has the most web performance engineers?

London leads with 10 company records, followed by Paris (8) and New York (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 618 professional contacts with verified work emails tracked across these 393 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 393 web performance engineers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.