8 CRO Consultants Worth Hiring in 2026 (+ What They Cost)

The eight CRO consultants worth hiring in 2026 are Gajan Retnasaba, Joanna Wiebe and Michael Aagaard for SaaS, Talia Wolf and Alex Harris for B2B, and Brian Massey, Raphael Paulin-Daigle and Martin Greif for ecommerce.

Public retainers run from $7,500 to $25,000 a month, and the rest quote per project.

Each of them runs or leads a practice you can hire today. Pick by business model first, then by budget.

CRO Consultants Compared

Here is how the eight line up on specialty, how they work with clients, and what they publish about price.

Consultant	Firm	Specialty	Engagement Model	Public Rate	Website
Gajan Retnasaba	Spiralyze	SaaS and B2B landing page tests	Full-service program, performance fee, or pilot	$25,000/mo flat fee	spiralyze.com
Joanna Wiebe	Copyhackers	Messaging and conversion copy	Consults and team workshops	Quote only	copyhackers.com
Michael Aagaard	Independent	Research-led audits and testing roadmaps	Site audit with 6-month roadmap, smaller audits, retainer	Quote only	michaelaagaard.com
Talia Wolf	GetUplift	Customer research and emotional targeting	Audit, done-for-you testing, workshops	Quote only	getuplift.co
Alex Harris	AlexDesigns	Landing pages, experimentation, personalization	Free assessment, then managed CRO	Quote only	alexdesigns.com
Brian Massey	Conversion Sciences	Testing programs for ecommerce and lead gen	Managed program, CRO audit, training	Quote only	conversionsciences.com
Raphael Paulin-Daigle	SplitBase	DTC fashion, luxury, and lifestyle brands	Full-service CRO and landing pages	From $7,500/mo	splitbase.com
Martin Greif	SiteTuners	Ecommerce UX and lead gen sites	Audits, A/B testing, personalization	Quote only	sitetuners.com

Rates checked on 23 September 2026. “Quote only” means the firm publishes no price and sets one after a discovery call.

Best Conversion Rate Optimization Consultants

The best conversion rate optimization consultants pair research with testing and can show you results from businesses shaped like yours. Here they are, grouped by the model they know best.

1. Gajan Retnasaba (SaaS)

LinkedIn: Gajan Retnasaba

Gajan Retnasaba founded Spiralyze, an Atlanta firm best known for A/B testing SaaS and B2B landing pages.

The angle is prediction. Spiralyze scrapes A/B tests running across tens of thousands of sites, looks for patterns that keep winning, and starts your roadmap from those instead of from a blank page.

Design, copy, development and QA sit inside the fee, and the testing tools come with it. You hand over the page, not a task list.

Best for: SaaS teams with steady demo or trial traffic that want tests shipped weekly. Not a fit: early-stage sites without enough traffic to reach a result.

2. Joanna Wiebe (SaaS)

LinkedIn: Joanna Wiebe

Most CRO people fix the page. Joanna Wiebe fixes what the page says.

She founded Copyhackers and did more than anyone to make conversion copywriting a discipline of its own. Her work starts with customer research and ends with messaging your whole team can reuse.

Copyhackers takes consults and runs messaging workshops for marketing, product and sales teams together, which suits companies selling complex or “boring” software.

Best for: SaaS brands whose visitors understand the product but not why it matters. Not a fit: teams looking for someone to run an A/B testing program end to end.

3. Michael Aagaard (SaaS)

Michael Aagaard is the only solo operator on this list, which is exactly why he is on it.

He has worked full time in conversion optimization since 2008, including three years as Senior Conversion Optimizer at Unbounce. His method is research first, analytics plus qualitative work, before any test gets built.

His core offer is an in-depth site audit that ends in a six-month CRO roadmap. Smaller landing page and checkout audits, plus retainer consulting, sit alongside it.

Hiring him means working with the person who does the analysis, not an account manager who passes notes along.

Best for: SaaS companies with an in-house team that needs senior direction. Not a fit: anyone who needs design and development hours bundled in.

4. Talia Wolf (B2B)

LinkedIn: Talia Wolf

Talia Wolf founded GetUplift and built its method, emotional targeting, around one question. Why do your buyers choose anyone at all?

The work starts with customer research and emotional analysis, then moves into audits and experiments. Bitly, Thinkific and Teamwork are among the B2B brands that have hired her team.

GetUplift also trains in-house marketers, so the thinking stays after the engagement ends.

Best for: fast-growing B2B and ecommerce brands where the offer is sound but the page does not sell it. Not a fit: teams that want quick button tests without research.

5. Alex Harris (B2B)

LinkedIn: Alex Harris

Alex Harris has been running A/B tests on landing pages since 2000, long before CRO had a name.

He founded AlexDesigns, which now covers experimentation, personalization and AI marketing systems for B2B, SaaS and ecommerce clients. He also hosts the Marketing Optimization podcast.

Engagements start with a free assessment that points to the biggest leak first. If your trouble is landing page conversion rates on paid traffic, that is his home turf.

Best for: B2B companies spending on ads that land on weak pages. Not a fit: brands that only want a copy review.

6. Brian Massey (Ecommerce)

LinkedIn: Brian Massey

Brian Massey calls himself the Conversion Scientist, and his firm, Conversion Sciences, runs on that idea. Hypothesis, test, measure, repeat.

He wrote Your Customer Creation Equation and has run testing programs for ecommerce and lead gen sites for well over a decade.

Conversion Sciences is upfront about fit. The managed program is built for sites with at least 300 conversions or $100,000 in revenue a month. Smaller sites get pointed to an audit or training instead.

Best for: ecommerce stores with the traffic to test properly. Not a fit: stores below that threshold wanting a full program.

7. Raphael Paulin-Daigle (Ecommerce)

LinkedIn: Raphael Paulin-Daigle

Raphael Paulin-Daigle founded and runs SplitBase, a CRO agency that works almost only with DTC ecommerce brands in fashion, luxury and lifestyle.

That narrow focus shows. SplitBase pairs customer research with A/B tests and landing pages built for paid social traffic, which is where most DTC budgets leak.

It suits brands scaling ad spend that need the site to keep up. Our ecommerce conversion optimization tips cover the fixes worth trying before you hire.

Best for: DTC brands selling on Shopify with meaningful ad spend. Not a fit: B2B, SaaS, or marketplaces.

8. Martin Greif (Ecommerce)

LinkedIn: Martin Greif

Martin Greif has been President of SiteTuners since 2013 and runs the firm day to day.

SiteTuners works on conversion audits, A/B testing and personalization, and Greif’s talks keep coming back to three questions every visitor asks. Am I in the right place, can I trust this site, and what do I do next?

He also wrote True Connections, a book on relationship marketing, which explains the firm’s focus on trust signals.

Best for: ecommerce and lead gen sites that feel cluttered or untrustworthy. Not a fit: teams that only want test execution without an audit.

What the Consultants on This List Measure

Every consultant here measures revenue per visitor, not clicks. A test that lifts button clicks but lowers order value is a loss, and good consultants call it one.

They also segment before they celebrate. A change that wins on desktop can lose on mobile, and new visitors often react differently from returning ones.

Take a social proof test with WiserNotify as the example. The notification goes live for half your visitors while the other half sees the page without it.

You compare revenue per visitor and conversion rate between the two groups, split by device, until each group has enough orders to trust the gap.

Notification clicks and impressions stay on the dashboard, but they never decide the test. That is the same discipline these eight apply to every change they ship.

What Does a CRO Consultant Cost?

A CRO consultant costs from $7,500 to $25,000 a month for a published full-service retainer. Solo consultants and audits are quoted per project after a discovery call.

The price follows the scope, not the title:

• Full-service programs bundle research, design, copy, development and testing tools. Spiralyze charges a $25,000 flat monthly fee, and SplitBase starts at $7,500 a month.
• Performance pricing ties fees to test results. Spiralyze offers it alongside a smaller pilot on a few high-value pages.
• Audits and workshops are one-off projects. GetUplift, Conversion Sciences and Copyhackers all sell them, quoted per engagement.
• Solo consulting buys senior time without a production team, so you still need your own designers and developers.

Traffic matters as much as budget.

If a site has too few conversions to reach a result in a few weeks, even the best consultant is left guessing. That is why some firms set a minimum before they take on a testing program.

Consultant or Agency: Which Do You Need?

Hire a consultant if you have people to build and ship changes and need senior direction. Hire an agency if you need research, design, development and testing handled for you.

• Pick a consultant when you have an in-house designer or developer, a narrow problem such as messaging, or a budget for a few days of senior time a month.
• Pick an agency when nobody on your team owns testing, you want several tests running at once, or tools and development need to be included.

Several people on this list sit in between. They lead a firm, but you still get them in the room.

If you want the full agency route, our list of the best conversion rate optimization agencies compares 20 of them.

How to Choose a CRO Consultant

Start with your business model, then work through these questions on a first call:

• Have you worked with sites like mine? Ask for a case study from the same model and a similar traffic level.
• What do you need from my team? Some expect your developers to build every test. Others include development.
• Which tools will you use? Check whether testing and analytics conversion rate optimization tools are included or billed to you.
• How do you report results? Look for revenue per visitor and confidence levels, not a list of “winning” colors.
• What happens after a test? Winners should be built into the site properly, not left running in a testing tool.

Wrap Up

The right CRO consultant knows your business model before they know your page. That is the reason this list is sorted by SaaS, B2B and ecommerce.

Shortlist two or three, ask each for a case study that looks like your business, and judge them on how they measure.

The one who talks about revenue per visitor on the first call is usually the one to hire.