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Senior CRO Specialist - Freelance

Posted 7 Jul 2025
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Work experience
3 to 10 years
Full-time / part-time
Full-time
Job function
Degree level
Required languages
English (Fluent)
Dutch (Fluent)

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Join the Digital Sales Team @ team.blue NL

We’re on the hunt for a freelance Senior CRO Specialist to become an integral part of our Digital Sales team. You’ll be the go-to CRO expert in-house, working across five unique B2B brands and platforms. Our customers range from passionate hobbyists to enterprise-level decision-makers — all looking for seamless, intuitive digital journeys.

This role requires a mix of data-savviness, sharp UX instincts, and stakeholder finesse. You’ll collaborate across disciplines, lead experimentation pipelines, and coach junior staff, all while delivering measurable impact.

What You'll Be Doing

Conversion Rate Optimization

  • Own the optimization of our in-house shopping cart across multiple brands.
  • Identify, prioritize, and execute high-impact conversion experiments.
  • Design, run, and analyse A/B & multivariate tests using VWO.

Data, Tracking & Evaluation

  • Analyse and report on user behaviour across multiple channels and platforms.
  • Independently evaluate tracking implementations, troubleshoot pixel & server-side issues, and collaborate with external tracking agencies.
  • Ensure data integrity and champion structured testing frameworks.

Stakeholder Collaboration

  • Report CRO outcomes to both operational and executive-level stakeholders.
  • Build alignment across departments through strategic insights and transparent communication.
  • Validate test proposals and evangelize a hypothesis-first mindset.

Coaching & Knowledge Sharing

  • Mentor UX designers and marketers in CRO methodologies.
  • Coach junior team members in data tools, reporting, and experimentation.
  • Champion a culture of experimentation and research — no assumptions, only validated learning.

What You Bring

Hard Skills

  • Proven experience optimizing ecommerce funnels and shopping carts.
  • Hands-on proficiency with VWO (Visual Website Optimizer) or similar testing tools.
  • Advanced skills in analytics platforms (GA4, Looker Studio, or Tableau).
  • Knowledge of tracking architectures, including tag managers, server-side tagging, and pixels.
  • Ability to create comprehensive dashboards and testing reports.

Soft Skills

  • A researcher mindset: data before opinions, and hypotheses before hunches.
  • Excellent stakeholder management: from C-level to operations.
  • Passion for mentoring and coaching team members.
  • Strong communication skills and a knack for simplifying the complex.

Example Projects You’ll Tackle in the First 6 Months

  1. Shopping Cart Optimization Blueprint – Budget: €11.700,-
    • Audit & redesign cart experience for 5 brands.
    • Identify friction points and low-hanging fruit using heatmaps, recordings, and funnel data.
  2. End-to-End VWO Testing Program – Budget: €9.750,-
    • Set up a structured testing calendar.
    • Deliver bi-weekly tests: headlines, CTA placement, layout experiments, etc.
    • Implement experiment reporting framework.
  3. Cross-Channel CRO Dashboard – Budget: €3.900,-
    • Build dashboards with consolidated CRO performance KPIs.
    • Visualize experiment ROI, user behaviour trends, and test pipeline status.
  4. Tracking Infrastructure Audit – Budget: €3.900,-
    • Evaluate current pixel, tagging, and event tracking setup.
    • Create implementation and improvement plan (in collaboration with agency partners).
  5. CRO Knowledge Uplift Plan– Budget: €3.900,-
    • Train marketing and UX colleagues in CRO fundamentals.
    • Host bi-weekly CRO stand-ups and knowledge sessions.
  6. CRO Playbook & Hypothesis Library – Budget: €5.850,-
    • Create a central documentation hub for learnings, best practices, and hypothesis templates.
    • Standardize experimentation methodology across brands.

Paid in fractions on a monthly interval depending on project progress.

Ready to optimize at scale, own results, and empower a growing team with your CRO expertise?

Apply now to join a high-impact, data-driven environment where you’ll make a measurable difference.

We bouwen alles waar we van dromen. Van een eigen datacentrum - dat security, uptime en privacy garandeert - tot aan een realtime bestelproces voor BladeVPS. We kicken op automatiseren, op meer doen met minder resources. Innovatie zit in ons DNA.
Zelfstandigheid is essentieel bij TransIP, maar je bent nooit alleen. Je kunt al je ideeën kwijt in een geweldig…


We bouwen alles waar we van dromen. Van een eigen datacentrum - dat security, uptime en privacy garandeert - tot aan een realtime bestelproces voor BladeVPS. We kicken op automatiseren, op meer doen met minder resources. Innovatie zit in ons DNA.

Zelfstandigheid is essentieel bij TransIP, maar je bent nooit alleen. Je kunt al je ideeën kwijt in een geweldig team. Samen til je TransIP naar een hoger niveau. Onderling halen we het beste uit elkaar. Successen worden vanzelfsprekend uitbundig gevierd met de beruchte TransIP team events.

We hebben altijd plaats voor nieuwe avonturiers. Teamleden die vinden dat perfectie de standaard moet zijn. Of je nou werkt aan de nieuwste feature, of stoom afblaast aan de pingpongtafel. De vrijheid om creativiteit en innovatie tot leven te brengen, dat is de basis van ons succes.

IT
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100 employees