Mars

Director of Analytic & AI Capabilities

Head of Data Science - North America

The Estée Lauder Companies Inc.

Select highlights include: 
DIGITAL TRANSFORMATION: Amplified customer spending 3-5x via hyper-personalized digital experiences and an 80M-record consumer data platform.
EMBEDDED CUSTOMER CENTRICITY: Devised KPI dashboard for 30+ brands, aligning consumer experience metrics with strategic growth goals.
BUILDING A DATA-DRIVEN MARKETING CULTURE: Conducted data analytics and marketing strategy training for 2,000 marketing leaders.

Executive Director, Global CRM Engagement, Activation & Analytics

The Vitamin Shoppe

Select highlights include:
DATA-DRIVEN INNOVATION: Launched a $100M annual subscription business using customer data analysis and segmentation.
STRATEGIC NEGOTIATION: Fostered strategic partnerships, securing $30M in bottom-line improvements through data-driven negotiations.
DRIVING CUSTOMER RETENTION: Revamped loyalty program, enhancing customer retention and boosting top-line growth.

Senior Director Analytics & Insights

Director, Business Analytics & Insight

The Children's Place

Select highlights include:
CHANGE AGENT: Generated $25M net profit by innovating store fleet optimization tool.
CUSTOMER CENTRIC PERSONALIZATION: Increased sales by $4M and saved $1M through personalized email communication strategies.
LEVERAGING CUSTOMER ENGAGEMENT: Utilized branded research panel to leverage customer engagement, increasing top-selling product turnover by 23%.

Director - Omni Channel Analytics & Insights

Party City

Manager - Marketing Analytics & Consumer Insight

Marketing Analyst

Montclair State University, School of Business, Dean's Office

School of Business Administrative Affairs/Programs Coordinator & Dean's Office Graduate  Assistant

At Mars Petcare, I lead Analytics & AI Capabilities and serve as interim head of our Global Analytics Services team, guiding a global team to deliver scalable solutions that simplify complexity, accelerate decisions, and drive measurable business impact.

Over the past five years, we’ve evolved from a specialized function into a trusted cross-divisional partner — building reusable frameworks, strengthening core analytics capabilities, and enabling faster, more consistent decision-making across our business.

I’m especially proud of our team: value-focused, pragmatic, curious, and deeply committed to our shared purpose: A better world for pets. We stay close to key business challenges and own the outcomes we deliver.

Before Mars, I led analytics transformations at Estée Lauder and The Vitamin Shoppe. Early in my career, I learned that great analytics isn’t about having all the answers. It’s about asking the right questions and knowing when to challenge them. That principle continues to guide how I show up: with clarity, integrity, and purpose.

Always happy to connect — whether about analytics, leadership, or exchanging ideas.

Martin Leitner

Digitalizing Petcare at Scale.

Working in partnership with business leaders to ensure successful creation of new digital&tech organization within Petcare segment.

Global Petcare P&O Effectiveness Manager

Working closely with Business Partners and business stakeholders to ensure policies compliance, data accuracy and proper upskilling & development of managers and associates across the segment.

P&O Expert Global Petcare

Tranformation Processing Specialist

Transaction Center team member processing HR changes for Associates from few European countries including preparing documentation. Currently working on company re-organization project cooperating with Business Partners, Project Managers and other stakeholders across the organization.

Processing Analyst

First point of contact for Mars Associates from across Europe in resolving queries on policies and HR processes via various intake channels. Responsibilities require also preparing process documentation and employment reference letters. I was trained also in processing HR requests related to employment and organizational changes; thus, I have knowledge of case management and SAP HR systems.

Contact Center Analyst UK & IE

Skanska

Providing treasury service to foreign entities including cash flow forecasts, loan and company cards administration, documents preparation and workflow, accesses.

Obsługa zagranicznych spółek w zakresie finansów, przygotowywanie prognoz finansowych, administracja w zakresie pożyczek i kart służbowych, dokumentów, uprawnień.

Treasury Specialist

Dom Kultury Świt

English teacher for groups of adults.

Nauczanie języka angielskiego zarówno w grupach jak i indywidualnie.

English Language Teacher

PKO Bank Polski

Customer Service for Corporate Clients including bank accounts, preparation of documents, access and handling complaints.

Obsługa klientów korporacyjnych w zakresie rachunków bankowych, przygotowania dokumentacji, dostępów i zajmowania się reklamacjami.

Junior Specialist

Moose

English teacher for individuals.

Nauczanie języka angielskiego podczas indywidualnych zajęć.

Stratego Warsaw

Comprehensive administration of office. 

Całościowa obsługa biura w zakresie administracji.

taplio

The Battle

Martin Leitner

Justyna Łogwiniuk

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