TRANSFORMING BUSINESSES & LEADERS at the intersection of people & technology.
Valle Advisory partners with global businesses and leaders to navigate complexity, shift culture, and strengthen leadership. By combining strategic HR expertise, executive coaching, technology and data centric thinking, we deliver powerful shifts in people and performance with results that last.
Valle — Spanish and Italian for “valley” — is more than a name. A valley is the space between peaks: an invitation to pause, reflect, and recalibrate. It’s not retreat, but depth. A place for quiet evolution where change is catalysed — not rushed, not surface-level — but nurtured through reflection, insight, and courageous action.
At Valle Advisory, this is the work we do. We create the conditions for transformation that lasts: where human connection meets data, where technology supports clarity, and where leaders find the space for a powerful shift toward sustained success.
Testimonials:
“Tammy was a strategic and an invaluable partner during the company’s most significant transformation. She helped us navigate immense complexity by providing clarity, guidance and a steadfast sense of purpose when we needed it the most.”
— Robert Lawson, former Global Head of M&A, BP
“Tammy brought a fresh forward thinking approach to talent management. She very quickly learned the ins and outs of our digital technology business, its’ value and challenges. Tammy became a valuable partner helping me transform the team culture and mindset to new levels necessary in a rapidly evolving work environment driven by never-ending technology disruption. Her easy going, yet assertive and straightforward style was very effective.”
— Ayman Assaf, Chief Information Officer, Energy Trading
“Tammy’s coaching style is supportive, challenging and eye-opening. To truly benefit, you need to be open, vulnerable, and committed to doing the inner work - and if you are, the growth is life-changing”.
— Category Manager Procurement
“I had the pleasure of working with Tammy and found her to be an ideal business partner. She invested time to deeply understand the business model, commercial levers, and risk profile, then translated that insight into a people strategy that helped unlock measurable value. In a trading environment where performance is fundamentally driven by talent, culture, and decision quality, her perspectives were incredibly valuable”.
— Global Controller, Supply & Trading
“With a knack for insightful questioning, Tammy gets past the symptoms and into root causes, fast. She engaged stakeholders with curiosity and clarity, surfaces the real constraints, and helps shape pragmatic solutions that stick. I came to rely on her judgement, her calm under pressure, and her ability to align leaders around actions that matter”.
— Vice President, Financial Global Services
Book a free discovery call
Every transformation starts with a conversation. Our free discovery call is a space to explore your needs — whether that’s shifting culture at scale or unlocking your next level as a leader. Together, we’ll clarify priorities and determine the right next step.