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Conversion Optimization Company

BrillMark

Development partner building A/B tests, Shopify and WordPress work for CRO agencies and growth teams

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About BrillMark

BrillMark supplies developers who build and launch website experiments. Its customers are conversion optimisation agencies, growth teams and B2B and direct-to-consumer brands. It describes itself as a distributed team of developers with more than ten years of experience.

What BrillMark does

  • A/B test development: hand-coded experiments on any testing platform, checked across browsers and devices.
  • Web development: Shopify migration and theme work, plus WordPress development.
  • AI and automation: chatbot and agent development, with AI used for repeatable tasks and people responsible for the logic.
  • QA and optimisation: pre-launch checks, speed work and accessibility fixes.
  • CRO programmes: optimisation support, including analytics data combined with test results.

Customers and markets

Agencies and brands that have testing ideas but not enough in-house developers, or whose testing volume rises and falls. The company says it has served more than 200 agencies and global brands.

Key facts

  • Experience: more than 10 years
  • Code handover: experiment code is stored on GitHub for the client

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

As of 2026-10-25. Organic ranks only; sponsored placements are never ranks.

What the business tells TrustList

Founded
2016 (10 years) evidence sent

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