MARIUSZ GROMADA is a senior banking executive and builder with more than 20 years of experience at the intersection of customer strategy, data science, and technology in large-scale B2C environments. Currently serving as Chief Retail Customers & Omnichannel at a major bank in Poland, he helps turn customer-centric ambition into measurable growth through AI-driven personalization, integrated channel strategy, modern sales support tools, and pragmatic operating models that work in the real world – not just on slides.
His work spans the full loop: understanding customer needs with analytical rigor, activating that insight through CRM, personalization and next-best-action orchestration, supporting sales and service channels with better tools and workflows, and measuring impact transparently. He is particularly focused on “AI by design” approaches that replace campaign noise with always-on relevance – keeping trust, control, business accountability, and human value at the center.
A Philosophy of End-to-End Ownership
Mariusz holds the conviction that we live in an era of unprecedented possibility, where the democratization of high-end tools and knowledge has collapsed barriers to creation. He believes that today, with enough discipline, curiosity, and ownership, an individual can build meaningful capabilities across different fields – not by becoming a superficial generalist, but by combining depth, execution, and the willingness to take responsibility for the whole outcome.
His professional identity reflects this multidimensional approach:
- Executive Leadership: Transforming high-level strategies into scalable solutions. At a top-tier bank, Mariusz orchestrates complex customer growth, omnichannel, analytics, personalization, and sales support ecosystems that serve millions of customers daily, bridging the gap between business priorities, technology architecture, data capabilities, and measurable impact.
- Writing & Publishing: With Customer First, Value Next, he offers a strategic playbook for the AI era. True to his philosophy, Mariusz personally oversaw the entire publishing process – from writing and translation to editing, DTP layout, interior design, and publishing preparation – demonstrating end-to-end ownership of the final product.
- Industry Speaking: A recognized voice in the sector and a regular contributor to major forums (e.g., MIT Sloan Management Review, Forbes, Business Insider, European Financial Congress). Mariusz frequently takes the stage to debunk hype and share practical insights on AI adoption, digital transformation, omnichannel growth, personalization, and the future of customer relationships.
- Software Engineering: Creator of mXparser, a global mathematical expression parser with 5M+ downloads, and the Scalar mobile app, with 400k+ downloads. He doesn’t just talk about technology; he builds it and maintains open-source projects used by developers worldwide.
- Science Popularization: A mathematician passionate about sharing knowledge. His educational blog, MathSpace.pl, attracts hundreds of thousands of readers seeking answers to complex mathematical questions, ranging from classification trees to number theory.
- Music Composition & Production: Creator of the progressive metal project RELEARN. He composes, performs, records, mixes, and produces complex instrumental works, bridging mathematical logic, structure, rhythm, and human emotion.