Skill needed: SQL, AB Testing.
Employer: The Knot Worldwide
At The Knot Worldwide, we champion celebration - and that starts with celebrating our people. Our employees are passionate dreamers, thoughtful doers, and lifelong learners who power meaningful moments for millions around the world. We’re united by authentic connection, shared purpose, and a deep commitment to the global community we serve. Here, flexibility and belonging go hand in hand with high performance. Driven by our core values, we believe the best ideas come from empowered teams: those who consistently collaborate with intention to design solutions, spark ideas, and drive impact. Our people are at the heart of our success.ABOUT THE ROLE AND OUR TEAM:TKWW is looking for a Lead Data Scientist to join our team of data professionals supporting our Marketplace. The Lead 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 decisionsApply advanced statistical and machine learning techniques (e.g., hypothesis testing, regression, classification, clustering, forecasting, causal inference) to uncover insights and guide strategyForecast and simulate hypotheticals to provide early potential signals before large initiatives startDesign and analyze A/B and multivariate testing experiments; guide experimentation best practices across teamsDesign, build, and maintain reusable, scalable data products and self-serve capabilities used by multiple internal teamsTranslate analyses into clear, actionable recommendations, linking insights to business outcomes such as ROI, conversion, retention, and revenueMaintain a deep understanding of the product, relevant data assets, and the outcomes of past experiments and analysesIdentify opportunities for new data products and integrations, prioritize a backlog of data assets and use cases, and collaborate with business partners to implement themPartner closely with Product, Engineering, Marketing, Sales, and other stakeholders to ensure strong internal customer focus and alignmentPartner with engineers to ensure appropriate and scalable tracking is in placeSUCCESSFUL LEAD DATA SCIENTIST CANDIDATES HAVE:Excellent communication skills; able to translate technical concepts to non-technical audiencesStrong business acumen and ability to translate business problems into analytical solutions and decision frameworksDemonstrated ability to influence stakeholders and drive alignment through data-driven insights and recommendationsAdvanced knowledge of statistics, including hypothesis testing, regression, causal inference, and forecastingHands-on experience with experiment design, analysis, and rollout of A/B and multivariate testsAdvanced SQL skills and ability to write efficient, production-ready queriesStrong Python skills for data manipulation, visualization, and advanced analysisKnowledge of data modeling and experience partnering with engineers on data infrastructureExperience prioritizing and managing analytical work, data assets, or product backlogs in a cross-functional environmentMaster’s or Ph.D. in a quantitative field preferred5+ years of experience in data science or advanced analytics, with some prior leadership, mentorship, or project ownership experienceFluent in English & Spanish BENEFITS:Private health insuranceLife insuranceEmployee assistance program: on-demand mental health assistance program for any professional or personal matterOptional salary advancesTax relief options: pre-tax savings for food, transport, daycare and work related training expensesGym membership discountUdemy coursesPersonal time off: 23 working days of holidays per year + additional days each year considering the application of the max. anual working hours of the Collective Bargaining AgreementOther leave entitlements: enhancements to statutory leave permissions, for instance: maternity, paternity, childcare, illness and others to support work-life balanceWork from home allowance (40€/month)Food allowance (55€/month)Employee giftingSignature eventsEmployee resource groupsDEI & Sustainability councilsRobust communication and feedback channelsFocused FridaysRecognition iniciativesLocal eventsGROW programTKWW University for Employee & Leader developmentEmployee referral programWORK MODEL:This role is Together@TKWW-eligible and based near one of our office hubs. Starting September 15, 2025, you’ll be expected to work in the office two days a week as part of our hybrid work model.At The Knot Worldwide, we believe you are more than a resume and invite you to go for it, take the leap of faith, and apply for this job. Together, we have an incredible opportunity to make it even easier for our customers to plan life’s most meaningful moments and for our small business owners to grow and scale. We would love to have you with us on our journey. WHAT WE LOVE ABOUT YOU:Commit to our customers: You act as one team on behalf of our customers. You lead with head and heart, and build what matters for life's most meaningful moments.Raise the bar: You define "great" and work backwards. You don't just accept how it's been done, but boldly define how it should be. You are unafraid to innovate, learn, and keep moving forward toward our shared vision.Be all in: You believe in our mission and take ownership of your work. You debate openly to reach the best outcomes, speaking with clarity and care, embracing diverse perspectives, then commit fully.Celebrate impact: You measure success by the outcomes you create. You hold yourself accountable to delivering value, while recognizing progress and the lessons learned along the way. You love to win, together.WHAT YOU LOVE ABOUT US:We believe in a wide range of holistic offerings to support our employees so that they can live our values day in and day out. From mental wellbeing, physical health and financial planning, to engaging perks and discounts, we are in the business of celebrating and supporting the Moments that Matter, both in and out of the office.. We offer flexible vacation, generous parental leave, and prioritize initiatives that support the growth, development, and happiness of our people.Together@TKWW is our approach to hybrid work. It’s designed to support how we work best: combining the flexibility we value with meaningful opportunities to connect in person. Whether a role is Together@TKWW-eligible or not, we believe in purposeful moments to come together, build strong relationships, and drive bold ideas forward.For Together@TKWW-eligible roles, this includes regular in-office time to foster collaboration and connection.For roles not eligible for in-office expectations, we support connection through virtual collaboration and intentional gatherings.To facilitate in-person collaboration, we have office spaces in Barcelona, Spain; Delhi, India; Galway, Ireland; London, England; New York, NY; and Washington, D.C.