Welcome to
The Black Sherpa
A trusted partner in building cultures where equity and performance rise together.
Brave Conversations
Workshops
Mentoring
Circles
Talks &
Keynotes
You don’t need another surface-level speaker.
Another glossy initiative.
Another consultant who’s all theory and no traction.
You need a partner who understands what you’re really up against.
The politics. The pressure.
The performative noise.
The tightrope between driving commercial results and holding the line on culture.
The meetings where data wins but nuance gets lost.
The weight of carrying the conscience of a company... without burning out.
If that sounds like your reality, welcome.
You’re in the right place.
I help forward-thinking organisations like yours build inclusive cultures that don’t just look good on paper... they perform in reality.
With nearly 20 years in the life sciences sector, I’ve led strategy, built award-winning development programs, and coached high-performers across global teams.
But I’ve also walked the path of the underrepresented leader. I’ve sat at the table, navigated the barriers, and led change from within.
I understand the lived experience behind the data.
And I speak the language of both inclusion and impact.
I’m Nyambe Sumbwanyambe...
The Black Sherpa
We help people-first leaders like you deliver culture change that lasts... without losing your edge.
Equip managers with inclusive habits that stick... across teams, not just training rooms
Fast-track under-represented talent into visible, high-impact leadership
Coach senior leaders to lead cultural transformation with empathy and conviction
Deliver workshops and keynotes that ignite change... not just tick boxes
Support you as a strategic
architect of culture, not just the fixer
Whether you're…
Preparing for board-level scrutiny on your DE&I outcomes
Trying to retain diverse top talent in a competitive market
Ready to stop the performative cycle and start real change
Or simply tired of carrying this work alone...
You don’t have to do this in isolation.
This is where lived experience meets commercial strategy. Where culture meets performance.
Where leaders like you find the tools, and the trust, to move from pressure to progress.
Let’s make equity your legacy.
And performance your proof.
Because this work isn’t soft.
It’s the sharpest, most strategic lever you have to future-proof your business.
And your people... the ones watching, hoping, waiting... deserve to believe it’s more than rhetoric this time.
Explore how we can support you through coaching, leadership programmes, advisory, or keynotes.
Or simply get in touch. I’d love to hear about the culture you’re building.
Because this isn’t just about checking boxes.
t’s about changing the game.
