MEET THE TEAM

Experienced Sales Leaders Driving Real-World Success

Sarah Niss

Managing Director

I’m on a mission to level the playing field for professional women by embedding sales strategies that work and ensuring that salespeople know how to deliver excellent results.

Learn more about Sarah

Like many people, I didn’t set out to build a career in sales - I fell into it. Frustrated by an environment where effort wasn’t rewarded, I sought a path where results, action, and consistency mattered.

I quickly fell in love with sales - the psychology of trust-building, human-to-human problem-solving, and asking the right questions to inspire action.

Throughout my career, I saw too many businesses lacking the structure, process, and mentorship needed to help salespeople truly perform. That gap led me to Sales Insights Academy.

Sales Insights Academy equips salespeople and managers with world-class coaching, proven methodologies, and a space to practice, grow, and lead with confidence. Instead of building from scratch and hoping it works, leaders learn how to motivate their teams, support deals effectively, think strategically about territory planning, and manage the metrics that drive results.

Greg Gladman

Senior Coach

I love it when I see a business move from ad-hoc sales to disciplined sales skills.

Learn more about Greg

Give people clarity, role expectations, and a cadence they can repeat, and results become inevitable.

With over 25 years in sales and leadership, from regional sales management to global development, I’ve led teams, advised CEOs, and delivered keynotes for executive groups.

I love it when I see a business move from ad-hoc sales to disciplined sales skills. Standards rise. A sales manager emerges from within. Revenue and profit follow because the groundwork is solid.

Andre Van Der Heyde

Senior Coach

With 25+ years of senior leadership experience across APAC, I partner with executive teams and sales leaders to drive sales transformation and deliver high-impact executive coaching.

Learn more about Andre

Over those years, I’ve held senior roles, including General Manager, Director, Country Manager, with global companies including Atlas Copco, United Technologies Corporation, and Howden, spanning industries such as oil & gas, mining, construction, utilities, and manufacturing.

I focus on leading strategic transformation in complex environments marked by low profitability, stagnant growth, and post-merger integration, resulting in restored growth, stronger margins, and reliable forecasts.

Over the past 4+ years, I’ve changed my focus to specialise in Sales & Leadership Training, with a focus on Account Management, Dealer Development, and the Psychology of Selling, proving that strong sales leadership transcends industry boundaries.

Jessica Olson

Extended DISC - Accredited Practitioner

People and behaviour have always fascinated me - how personality shapes communication, leadership, and results.

Learn more about Jess

When I discovered DISC nearly ten years ago, everything clicked. It gave me a framework for understanding why people behave the way they do and how small shifts in communication can make a huge difference. That passion led me to become an Extended DISC practitioner, and I now help people turn self-awareness into practical impact.