Celine Souici spent more than 25 years delivering large-scale ERP (Enterprise Resource Planning) digital transformation programs for multi-million and multi-billion, global, and culturally diverse companies before joining Mars as the Digital Core ERP S4 Transformation & Technology Senior DirectorERP Technology & Transformation Director. While her expertise has always centered on SAP and the digital space, she landed in Tech by chance. But she stuck around by choice.
After completing a successful Global SAP S/4HANA Digital Transformation, she was looking for her next big challenge, which led her to Mars.
“Mars offered me the chance to be part of their most ambitious digital transformation to date, and to shape it from the ground up,” she tells The Muse. “It was exactly the opportunity I was looking for, and it’s something I’m incredibly proud of. To be trusted with such a pivotal role in one of the most significant programs in the organization’s history is both a great responsibility and an incredible honor.”
Here, she tells us about her current role at Mars and the real-world impact of her team’s work.
Can you tell us about your current role at Mars?
I lead the S/4HANA technology delivery for Mars’ digital transformation program, overseeing the end-to-end technology workstreams. My role is to help shape, build, and embed a unified platform that will serve as the foundation for our future operations.
One of the biggest challenges is navigating the complexity of our matrix organization. Merging diverse requirements, operating models, and expectations across functions and geographies is no small feat. But my team and I have embraced that challenge head-on by initiating a full program reset, a bold but necessary move to streamline our governance, align roles, and simplify how we collaborate.
The impact of this transformation will be immense. We’re not just modernizing systems; we’re simplifying and automating processes at scale, enabling agility, and setting a foundation for future innovation.
How have you evolved or grown as a leader since joining Mars? What leadership lessons have you learned?
If I’m not evolving, I’m standing still, and that’s not who I am. This role has challenged me in new ways and taught me a lot about influence, strategy, empathy, and the importance of creating a strong network and a safe space, especially when driving complex change.
I’ve also seen how powerful it is to truly invest in your team, to give people the space to grow, nurture their potential, and help them see what’s possible and become their best self. That’s something I’m very intentional about.
How do you see AI shaping the future?
AI is not just a trend; it’s an accelerator for smarter decision-making, faster processes, and more personalized user experiences. Within the SAP ecosystem, we’re seeing AI enable predictive analytics, intelligent automation, and natural-language interfaces that dramatically improve how people interact with enterprise systems.
Looking ahead, I see AI driving a shift from reactive to proactive operations, flagging risks before they happen, optimizing supply chains in real time, and transforming data into actionable insights at every level of the business. AI will fundamentally reshape how we think, design, and deliver value.
Where do you see the biggest real-world impact of the work your team is doing?
The real impact of what we’re doing goes beyond technology. We’re enabling a cultural shift. We’re helping the organization move from fragmented processes and legacy ways of working to a single, integrated platform with standardized, future-proof capabilities.
Our work will empower our teams globally to work smarter, collaborate more effectively, and make better decisions with better data. It’s about creating a system that not only supports the business of today but also unlocks the potential of tomorrow.
If you could give your younger self advice on your career path, what would you say?
Trust your instincts; they are sharper than you think.
Stop over-analyzing and trying to control every outcome.
You will always get there. The path might not be straight, but it will lead you exactly where you are meant to be.
Always be and stay resilient. You will face setbacks, but they will shape your strength.
Don’t follow the crowd. Build your own path with purpose.
Stay curious, keep growing, and always dare to do the exceptional.
Your potential is limitless, but only you get to define what success looks like. So be bold, be kind, be your true self, and never settle for less than what truly sets your soul on fire.