In more than ten countries around the world, The Knot Worldwide champions the power of celebration. Our global family of brands provide best-in-class products, services and content to take celebration planning from inspiration to action. At the core of our business is our industry-leading global online wedding Vendor Marketplace, connecting couples with local wedding professionals and a comprehensive suite of personalized wedding websites, planning tools, invitations, and registry services that make wedding planning easier for couples around the globe. Each year, we connect more than 4.5 million users with around 900,000 integral small businesses through our Vendor Marketplace.

LIFE AT TKWW

At The Knot Worldwide, we believe in doing work that matters. Each year, we help millions of couples around the world celebrate life's most meaningful moments, while also helping hundreds of thousands of global small business owners get discovered and scale. Life here means working alongside a team that cares deeply, not just about the work you do, but about the life you live. We prioritize employee well-being and development through meaningful opportunities for growth, and we celebrate milestones and wins in a big way. After all, celebrations are what we do best.

ABOUT THE ROLE AND OUR TEAM:

TKWW is looking for a Senior Data Scientist to join our team of data professionals supporting our Marketplace. The Senior Data Scientist will play a critical role in shaping data strategy, guiding experimentation, and driving impact through advanced analytics. They will partner with cross-functional teams—including product managers, engineers, and business stakeholders—to design experiments, develop analytical tools,



and ensure we are making data-driven decisions that deliver measurable results. As a trusted advisor and mentor, this person will both lead analyses directly and elevate the work of the broader team.

RESPONSIBILITIES:

- Gather, analyze, and interpret data to deliver business impact and help the organization make informed decisions
- Apply advanced statistical and machine learning techniques (e.g., hypothesis testing, regression, classification, clustering, forecasting, causal inference) to uncover insights and guide strategy
- Forecast and simulate hypotheticals to provide early potential signals before large initiatives start
- Design and analyze A/B and multivariate testing experiments; guide experimentation best practices across teams
- Design, build, and maintain reusable, scalable data products and self-serve capabilities used by multiple internal teams
- Translate analyses into clear, actionable recommendations, linking insights to business outcomes such as ROI, conversion, retention, and revenue
- Maintain a deep understanding of the product, relevant data assets, and the outcomes of past experiments and analyses
- Identify opportunities for new data products and integrations, prioritize a backlog of data assets and use cases, and collaborate with business partners to implement them
- Partner closely with Product, Engineering, Marketing, Sales,



and other stakeholders to ensure strong internal customer focus and alignment
- Partner with engineers to ensure appropriate and scalable tracking is in place

REQUIREMENTS:

- Excellent communication skills; able to translate technical concepts to non-technical audiences
- Strong business acumen and ability to translate business problems into analytical solutions and decision frameworks
- Demonstrated ability to influence stakeholders and drive alignment through data-driven insights and recommendations
- Advanced knowledge of statistics, including hypothesis testing, regression, causal inference, and forecasting
- Hands-on experience with experiment design, analysis, and rollout of A/B and multivariate tests
- Advanced SQL skills and ability to write efficient, production-ready queries
- Strong Python skills for data manipulation, visualization, and advanced analysis
- Knowledge of data modeling and experience partnering with engineers on data infrastructure
- Experience prioritizing and managing analytical work, data assets, or product backlogs in a cross-functional environment
- Master’s or Ph.D. in a quantitative field preferred
- 2+ years of experience in data science or advanced analytics, with some prior leadership, mentorship, or project ownership experience

WORK MODEL:

This role is Together@TKWW-eligible and based near one of our office hubs. You'll be expected to work in the office two daysa week as part of our hybrid work model.

#LI-Hybrid

#professional

AI FLUENCY

At TKWW, AI is a tool that helps our teams work smarter, move faster, and spend more time on the work that matters most. We expect every employee, in every role, to build fluency

📌 Senior Data Scientist (Barcelona)
🏢 The Knot Worldwide
📍 Barcelona