A/B Experiment Implementation
A/B test execution and UI/UX changes based on prioritized hypotheses. Covers test design, statistical setup, implementation in your testing tool, and analysis with documented winners and learnings.
What's included
- Hypothesis prioritization based on impact, confidence, and effort
- Test design with primary metric, guardrails, and sample size
- UI/UX changes built and QA'd across devices
- Implementation in your testing tool (PostHog, VWO, Optimizely, GA4 experiments)
- Statistical setup with proper traffic allocation and runtime
- Monitoring for sample ratio mismatch and data quality issues
- Results analysis with documented winners, losers, and learnings
- Shipping recommendations and follow-up test ideas
Why it matters
Most CRO programs stall because tests are poorly scoped, underpowered, or never properly analyzed. You get a steady pipeline of decision-grade experiments with a documented record of what works, what doesn't, and what to try next.
What clients say
“Thomas and the team at SmartMetrics did a fantastic job for us. We needed a complex cross-domain and cross-platform analytics and e-commerce tracking implementation, and they delivered on time and on budget. Great communication, too!”
Adam Sieminski
“Tomas is an exceptional analytics expert. He helped us migrate a client from Universal Analytics to GA4, including creating GTM tags/triggers/variables, ecommerce tracking setup, other event tracking setup, and even built out funnels. This client had a unique shopping/enrollment checkout process, but the migration and configuration was launched without any issues. Highly recommended for any analytics work.”
Brian Thomas Clark
“Thomas is patient, quick and very knowledgeable. I had a few projects that were under the gun a but he completed everything in a timely manner with great professionalism. I'll definitely be hiring him again in the future.”
Ameet Khabra
What clients say
“Tomas at SmartMetrics has been fantastic to work with. He consistently delivers high-quality work quickly, communicates clearly and proactively, and makes even complex implementations feel straightforward.”
Gray Digital Group
5.0 on Google · All reviews“A huge difference to the business, and we know where the next dollar goes.”
Blitzy“We can scale spend now without guessing what is actually working.”
PermitFlow“Extremely knowledgable & capable!”
Dj Haer Jr
Work with Tomas
Founder, San Diego, CA
20 years in marketing, CRO, CRM, and analytics. Now building the systems AI runs on.
You work with me directly, from scope to delivery. No account managers.