Tandi T.-Personalization | Conversion Rate Optimization | Data Insights
Check rate
Experience
Founder, Circular Business Advisor
Circular Business Network
First network for professionals working on circular business models
Founded a global network for professionals working on circular business models to connect, collaborate, innovate, and scale impact.
- Partnered with the City of Munich and Circular Munich on a 3-year strategy to improve data collection and textile reuse in Munich.
- Advised 5 SMEs on how to pilot, scale and optimize circular business models for profitability and sustainability.
- Produced market research on the circular business landscape to highlight opportunities, trends and risks.
Head of Revivo (Recommerce & Circular Services)
Vivobarefoot
Footwear Brand, Fast Company's World Changing Ideas Winner (2024)
Owned P&L, operations, and Go-to-Market strategy for global recommerce business and circular services; reporting to CCO.
- Drove new customer acquisition 2.5x (20% → 50%) with cross-channel marketing strategy, generating $14m in sales revenue in 3 years, and contributing an additional $1m in e-commerce sales.
- Expanded trade-in service from 2 to 28 countries by integrating trade-in service into online customer journeys, as well as in-store messaging and wholesale partnerships, growing pairs collected 2100% YoY (500→11,000).
- Negotiated contracts with repair and reverse-logistics partners, lowering processing costs by 40%.
- Generated $670k additional revenue and cut storage costs 35% by partnering with eBay on overstock and B-grade liquidation strategy.
- Formulated unit economics and pricing models for circular business models, lifting per-unit profit margin 50% for Kids footwear with a rental + recommerce model that increased overall category revenue 40% YoY.
- Doubled net revenue from £1.5M to £3M by identifying high-impact improvements through A/B and multivariate testing in Bloomreach.
- Grew repair services revenue by 65% YoY by using A/B testing to make changes to the repair content strategy on the e-commerce site.
- Grew monthly revenue from DE customers 500% (£10k to £60k) in 3 months, by designing personalization and localization campaigns for the German market in Optimizely.
Onsite & Personalization Manager
Zooplus
Largest Online Pet Retailer in Europe with $2.3bn in annual revenue
Worked cross-functionally with UX, CRM, 35 Product Owners on ideation, A/B testing, implementation of personalization across 25+ markets.
- Championed personalization initiatives, working with UX and CRM teams, and 50 Product Owners, to boost Average Order Value 35% through data-driven audience targeting in Adobe Target.
- Translated A/B test results from 30+ e-commerce sites into actionable insights for business owners, contributing to 33% revenue lift.
- Accelerated A/B testing adoption from 3 to 18 local shop teams in 6 months with a clear experimentation framework, cutting redundant tests by 65%.
- Increased newsletter subscribers 18% YoY by using Dynamic Yield to identify the most effective personalization for pop-ups.
- Fostered data-driven decision-making with custom dashboards for 15+ teams and upskilling shop managers on how to leverage insights.
- Built behavioral trigger campaigns in Dynamic Yield reducing cart and browse abandonment rates by 15% with exit-intent overlays and personalized promotions.
Head of Marketing
ZYNCD
AI Startup acquired by Texas Atlantic Capital
Planned and executed Go-to-Market strategy for 4 AI-driven networking communities, B2B marketing; managed 1 direct report.
- Prepared key inputs for business plan as part of fundraising: unit economics, projected revenue, GTM strategy.
- Worked with Data Scientist to automate content policy enforcement using sentiment tagging, engagement ranking.
- Grew membership +45% YoY for Zyncd online community by optimizing email content with A/B testing.
- Drove 3x increase in monthly users for UK Transport's online community, translating insights from analytics and heatmaps into an action plan to increase conversion for registration and sign-in pages.
Founder
T3K Digital
Digital Strategy Consultant for Fashion Companies
Advised retail, marketplace, and startup clients on digital transformation, customer experience, and commercial strategy.
Web Merchandising Specialist
Eileen Fisher
Sustainable fashion brand with 65 retail stores, $800m in annual revenue
Contributed to a 50% year-over-year increase in e-commerce sales by working across 3 cross-functional teams on digital marketing, merchandising, and innovation.
- Improved digital marketing ROI by 15% with a weekly report that analyzed effective campaigns and provided actionable recommendations to increase sales of slow-selling items.
E-commerce Project Manager
CreateThe Group
Digital Agency for Luxury Brands
- Led 4 teams in delivering large-scale digital projects for Bottega Veneta, Juicy Couture, Oscar de la Renta, and The New York Times, with 95% of projects delivered on time and within scope.
Siemens and BSH Home Appliances
- Increased conversion by 20%+ for Siemens and BSH Home Appliances e-commerce by redesigning the online customer journey using sitemaps and wireframes in Axure.
Grew B2B partnerships 40% for Tonplaygo fashion app
Tonplaygo
Grew B2B partnerships 40% for Tonplaygo fashion app
by writing case studies to show clients how dashboard insights could be applied commercially.
- Increased time spent on the Tonplaygo fashion app by 25% by working with a developer to improve UX based on heatmaps, feedback, and analytics.
VINOKILO
- Scaled monthly recommence sales from €1,500 to €10,000 for VINOKILO by using analytics and customer feedback to identify the main cause of checkout abandonment and reduce cart abandonment by 80%.
Content moderation for eBay UK
eBay UK
Content moderation for eBay UK
reviewing 2-3k images and product descriptions each day.
Improved conversion 33% for eBay UK secondhand
eBay UK
Improved conversion 33% for eBay UK secondhand
by formulating an SEO-informed marketing strategy to optimize product discovery.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Fashion, Retail, Professional Services, Government and Administration, Information Technology, and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Marketing, Information Technology, Strategy, Finance, Logistics, and Procurement.
Summary
I help fashion, e-commerce and AI businesses improve customer journeys, conversion and commercial performance. I have 10+ years of leading cross-functional initiatives using a structured, detail-oriented approach. Delivered €2 million in revenue by leveraging recommendation engines, behavior-based segmentation, and predictive targeting to improve metrics like conversion rate and add-to-cart rate. Skilled at using insights from A/B and multivariate testing to provide recommendations that align with business objectives.
Skills
- Data Analysis & Reporting
- E-Commerce
- Conversion Rate Optimization
- Cross-Functional Leadership
- Agile Project Management
- Content Moderation
- Digital Marketing
- A/B Testing
- Data Annotation
- Image Tagging
- Project Management
- Kpi & Dashboard Development
Data & Analytics
- Google Analytics
- Adobe Analytics
- Microsoft Business Intelligence
- Tableau
- Statistical Testing & Significance
- Data Insights
- Advanced Excel
- Ga4
Customer Journey
- Adobe Target
- Axure
- Optimizely
- Vwo
- Personalization
- Multivariate Testing
- Dynamic Yield
- Bloomreach
Project Management
- Microsoft 365
- Trello
- Jira
- Confluence
- Notion
- Miro
- Google Workspace
Ai
Chatgpt
Claude
Microsoft Co-Pilot
Gemini
Html
Contentful
Shopify
Magento
Wordpress
Languages
Education
Copenhagen Business School
Master of Social Science · Management for Creative Industries
Fashion Institute of Technology
Bachelor of Science · International Fashion Merchandising Management · New York, United States · summa cum laude
Statistics
Experience
Global experience
Expertise
Frequently asked questions
Have questions? Find more information here.
Tandi is based in Munich, Germany.
Tandi speaks the following languages: English (Native), German (Intermediate).
Tandi has at least 19 years of experience. During this time, Tandi has worked in at least 7 different roles and for 7 different companies. The average length of individual experience is 3 years and 8 months. Note that Tandi may not have shared all experience and actually has more experience.
Based on recent experience, Tandi would be well-suited for roles such as: Founder, Circular Business Advisor, Head of Revivo (Recommerce & Circular Services), Onsite & Personalization Manager.
Tandi's most recent position is Founder, Circular Business Advisor at Circular Business Network.
In recent years, Tandi has worked for Circular Business Network and Vivobarefoot.
Tandi is most experienced in industries like Fashion, Retail, and Information Technology. Tandi also has some experience in Media and Entertainment, Professional Services, and Government and Administration.
Tandi is most experienced in business areas like Marketing, Information Technology, and Strategy. Tandi also has some experience in Finance, Logistics, and Procurement.
Tandi has recently worked in industries like Fashion, Retail, and Professional Services.
Tandi has recently worked in business areas like Marketing, Finance, and Logistics.
Tandi attended Copenhagen Business School for Management for Creative Industries.
Tandi is immediately available for suitable projects.
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Calculated based on our freelancers’ daily rates as of 26 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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