Senior CRO Specialist

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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 CR