Ranked · 20 of 27 assessed
Ordered by Agency List ScoreDevelops scalable mobile and web apps with AI integration
Custom software development with AI and workflow automation
Custom digital solutions for complex enterprise challenges
Custom software and AI solutions for diverse industries
Custom software and database development for diverse industries
Custom product development and team scaling for digital transformation
Digital transformation with AI and mobile app development expertise
Custom software and app development for diverse industries
Custom software development and cloud consulting for healthcare and fintech
Digital transformation and custom software for diverse industries
Engineering digital experiences for banking and media industries
Custom software and cloud solutions for secure business operations
Crafts digital applications with web and mobile app development expertise.
Custom software development and mobile app solutions
Magento, Shopify, and WordPress development paired with marketplace integrations and AWS hosting
SEO and PPC services for inbound lead capture and search visibility
Enterprise software, hardware, and design solutions for global brands
Tailored technology solutions for mid-market digital transformation
Timezone-aligned nearshore software development and cloud services
Creates mobile apps and e-commerce solutions with design expertise
Also in California · 14 not ranked here
7 have not yet been assessed on the Agency List Score. Alphabetical.About this ranking
What this page ranks
This page ranks 20 of the 27 assessed performance engineering agencies in California — the ones carrying a published score — out of 34 listed.
The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.
Cohorts and awards
Agencies are compared within a cohort — here, Performance Engineering in California. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 27, so the strongest award available here is top 10%.
The 7 performance engineering agencies not yet assessed are listed on this page but not ranked.
A further 7 were assessed and no published evidence of their work was found, so no score is shown for them.
Paid placement
Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.
Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.
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Categories in California
Performance Engineering nearby
Questions
- How many performance engineering agencies are in California?
- 34 are listed on Agency List in California. 27 of them have been assessed on the Agency List Score as of October 2026, and 20 of those carry a published score.
- Which performance engineering agency in California is ranked highest?
- SolveIt, with an Agency List Score of 96.8, ranks #1 of 27 assessed agencies in Performance Engineering in California.
- Why are 14 performance engineering agencies listed here but not ranked?
- 7 of the 34 listed have not yet been assessed on the Agency List Score. A further 7 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
- How is the ranking determined?
- By Agency List Score, within the Performance Engineering in California cohort of 27 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.