Welcome to
The Black Sherpa

A trusted partner for companies building cultures where fairness and performance grow together.

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.

Three ways we help you create real, measurable change

What We Offer

Strategic partnership on culture and talent

Equip leaders to lead with fairness, confidence, and empathy... without slowing down delivery.

Accelerated talent progression

For under-represented talent ready to own their journey... with focus, intent, and the tools to thrive at the next level.

Strategic partnership
on culture

We help senior leaders embed inclusion into daily decisions... shaping culture, unlocking talent, and improving results.

What you gain from partnering with The Black Sherpa

A culture anchored in trust and equity

Higher trust, stronger retention, and a brand that attracts top talent.

Diverse talent, positioned to lead

Higher trust, stronger retention, and a brand that attracts top talent.

Inclusion as a performance multiplier

Grounded in insight. Embedded in culture. Measured by results.

Do you ever feel like you're walking a tightrope… expected to deliver results without compromising the culture you're trying to build?

Are you in rooms where data wins, but nuance disappears?

Do you carry the conscience of your company, quietly doing the emotional labour that rarely gets recognised?

At The Black Sherpa, we partner with organisations to turn that reality into progress.

Our programmes help leaders and teams navigate complexity, align performance with purpose, and build cultures where underrepresented talent doesn’t just survive but thrives.

If that sounds like your reality, welcome.

You’re in the right place.

Our programmes can help

Yellow line drawing of three mountains with clouds above and lines on the mountains indicating snow or texture.

Brave Conversations
Workshops

Yellow arrow pointing to the right on a black background.
Hand-drawn yellow oval shape on a transparent background

Mentoring
Circles

A yellow arrow pointing to the right on a black background.
Yellow illuminated vintage microphone on a stand with radiating lines around it against a black background.

Talks &
Keynotes

Yellow arrow pointing to the right on a black background.

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 under-represented 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.

Black background with a brown zigzag line resembling an upward trending graph.

Hi, I’m Nyambe Sumbwanyambe...
The Black Sherpa

Man reading a book in a dimly lit room with dark green curtains and a stack of books in the foreground.
A yellow compass rose illustration with black background, showing the four cardinal directions labeled North, East, South, and West.

We help people-first leaders like you deliver culture change that lasts... without losing your edge.

Yellow checkmark symbol on a black background.

Equip managers with inclusive habits that stick... across teams, not just training rooms

Yellow check mark or tick symbol on a black background

Fast-track under-represented talent into visible, high-impact leadership

Yellow check mark with a black outline on a transparent background.

Coach senior leaders to lead cultural transformation with empathy and conviction

Yellow check mark symbol on a black background

Deliver workshops and keynotes that ignite change... not just tick boxes

Yellow check mark symbol on a black background

Support you as a strategic
architect of culture, not just the fixer

Black and white illustration of a steaming cup of coffee with a saucer, and a latte or cappuccino in a glass, both placed on a tray.
Map showing the route from Las Vegas to Philadelphia with the distance and travel time.
A black square with a yellow vertical line on the left side, and a light yellow circle with a darker yellow outline overlapping the line at the top

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.

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.

Welcome to The Black Sherpa.
Let’s lead from higher ground.