Experiments built,
results delivered.

Experiments built,
results delivered.

I support agencies as a white-label experimentation & CRO specialist.
Available for short-term projects or ongoing delivery support.

I support agencies as a white-label experimentation & CRO specialist.
Available for short-term projects or ongoing delivery support.

Let's partner up

choose your variant

variant_a


best for agencies who need one-off CRO help or overflow execution.

white-label conversion audit

  • funnel and analytics audit delivered in your template

  • prioritised backlog of quick-win experiments

  • ready-to-present report under your brand


experiments build

  • A/B test build and set up

  • analytics and tagging fixes included

  • billed per hour or per sprint — no hidden extras

variant_b


best for agencies with recurring clients who need reliable CRO capacity.

fractional / retainer setup

  • continuous A/B testing and experiment development

  • async workflow in Slack, ClickUp or Notion

  • monthly reporting or internal delivery decks

fully white-label if needed

  • I work behind the scenes; you manage the client

  • NDA-ready, consistent quality, quick turnaround


variant_b

best for agencies with recurring clients who need reliable CRO capacity.

choose your variant


variant_a

best for agencies who need one-off CRO help or overflow execution.

white-label conversion audit

  • funnel and analytics audit delivered in your template

  • prioritised backlog of quick-win experiments

  • ready-to-present report under your brand

experiments build

  • A/B test build and set up

  • analytics and tagging fixes included

  • billed per hour or per sprint — no hidden extras

variant_b

best for agencies with recurring clients who need reliable CRO capacity.

fractional / retainer setup

  • continuous A/B testing and experiment development

  • async workflow in Slack, ClickUp or Notion

  • monthly reporting or internal delivery decks

fully white-label if needed

  • I work behind the scenes; you manage the client

  • NDA-ready, consistent quality, quick turnaround


Hi, I’m Ellen — a growth engineer specialised in A/B testing, analytics, and CRO execution.


Most agencies don’t need another strategist.

They need reliable delivery capacity they can plug into their existing workflow.


That’s where I come in.

I support agencies with conversion optimisation and experimentation, from analysis and ideation to test design and insights. You keep the client relationship under your brand while I focus on execution.


Hi, I’m Ellen — a growth engineer specialised in A/B testing, analytics, and CRO execution.


Most agencies don’t need another strategist.

They need reliable delivery capacity they can plug into their existing workflow.


That’s where I come in.

I support agencies with conversion optimisation and experimentation, from analysis and ideation to test design and insights. You keep the client relationship under your brand while I focus on execution.


let's connect

who i work with

rates & services

transparent and fair. made for agency partnerships

start

white label conversion audit

CRO analysis & opportunity mapping

delivered in your agency template

prioritised backlog of CRO quick wins and experiment ideation

optional walkthrough for your team

€850 one-time

For agencies or freelancers who need an audit ready to present to their client.

test

experiment build & setup

hypothesis → build → run → analyse

test implementation and validation

plain-language documentation for your client

€80 per hour

For agencies that need reliable, invisible execution on existing client projects.

scale

retainer/fractional partnership

continuous A/B tests & CRO execution

async collaboration in Slack, ClickUp or Notion

monthly reporting decks under your brand

NDA-ready, consistent quality

from €2000 / month

For agencies who prefer a steady, white-label partner over hiring full-time.

rates & services

transparent and fair

made for agency partnerships

start

funnel, onboarding & tracking review

delivered in your agency template

prioritised backlog of CRO quick wins and experiment ideation

optional walkthrough for your team

€850 one-time

For agencies or freelancers who need an audit ready to present to their client.

white label conversion audit

scale

retainer/fractional partnership

continuous A/B tests & CRO execution

async collaboration in Slack, ClickUp or Notion

monthly reporting decks under your brand

NDA-ready, consistent quality

from €2000 per month

For agencies that need reliable, invisible execution on existing client projects.

test

experiment build & setup

hypothesis → build → run → analyse

test implementation in VWO, Convert or Optimizely

plain-language documentation for your client

€80 per hour

For agencies that need reliable, invisible execution on existing client projects.

looking for a reliable white-label CRO partner?

looking for a reliable
white-label CRO partner?

let’s talk about how I can plug into your workflow,

behind the scenes, without the overhead.

Let’s talk about how I can plug into your workflow, behind the scenes, without the overhead.

© 2025 Ellen Goettsch | White label CRO & A/B Testing Partner for Agencies

© 2025 A/B Testing Studio | CRO & A/B Testing Partner for Agencies

info@abtesting.studio

info@abtesting.studio