Mary-Beth Hosking, Chief Executive Officer 

Mary-Beth Hosking is a pragmatic and seasoned technology leader, award-winning author, and the CEO of Women 4 STEM. With a master’s degree in business and technology, specialising in Strategic and Organisational Change Management, Mary-Beth has successfully led major restructures for multinational organisations during times of significant transformation. 

In her writing and speaking, she encourages leaders and professionals to embrace career pivots, notably expressed in her second book, When Now Means NOW! A Handbook for Career Change, Advancement, and Progression. Her philosophy, “Don’t be afraid to pivot, be afraid not to,” has inspired many to seize opportunities for growth and development. 

Her first book, In One Piece: A Step-by-Step Guide to Surviving Change, launched during the Covid-19 pandemic to help leaders manage through unprecedented disruption. In 2024, she released her third book, Not Another Digital Transformation – The 10x Generation, which focuses on how businesses can adapt to the future of digital transformation. Recognised for her work in addressing the diversity dilemma in technology, Mary-Beth was honoured with the WEQUAL Technology Leadership Award and was a finalist for the Outstanding Leadership Awards in STEM. Through her leadership, writing, and mentorship, Mary-Beth continues to inspire change-makers to embrace transformation as a path to success. 

Lisa Lauder, Chief Operating Officer

Lisa Lauder is an accomplished technology and operations leader with 15 years of experience driving organisational transformation and operational excellence across both large multinational corporations and purpose-driven organisations. Known for turning strategic vision into measurable outcomes, she has built high-performing teams, strengthened business foundations, and led complex change programs that support sustainable growth.

As Chief Operating Officer at Women 4 STEM, Lisa is focused on enhancing governance, data capability, and operational effectiveness to maximise the organisation’s impact. She is passionate about creating environments where diverse teams thrive and is committed to empowering the next generation of women to pursue and succeed in STEM careers.

Opal Brooks, Chief Financial Officer

Opal has over 20 years’ experience in corporate accounting, financial services, big 4 consultancies, and FMCG industries. This includes working with KPMG, EY and Citibank.

Opal has overall responsibility for managing the finance function of Millbrook, taxation and regulatory compliance, operational risk management as well as the Group’s statutory and secretarial functions.

She is a Fellow with the Association of Chartered Certified Accountants (UK), holds an MBA, is a member of CPA Australia and has a Diploma in Financial Planning.

Sarah Barnbrook, Chief Revenue Officer

Sarah Barnbrook is an award-winning international advocate for digital safety and ethical technology, with deep expertise in how emerging technologies impact women and girls. As Founder of Away from Keyboard (AFK) Inc. and an accredited UN delegate, she works across policy, education, and community sectors to address technology-facilitated abuse and strengthen digital rights.

Sarah serves on the global Women in AI Governance Human Rights Committee and has authored national Senate submissions and international policy recommendations on AI governance and digital safety. She is also an experienced charity leader, supporting organisations at a strategic level to strengthen governance, expand influence, and thrive through change. Grounded in lived experience and systems expertise, she champions safer, equitable digital futures.

Amber Lyons, Chief Marketing Officer 

Amber Lyons is a social media marketing expert and small business entrepreneur with a history of building and scaling successful business ventures. With a deep understanding of digital platforms and strategies, Amber helps individuals and businesses connect with their audiences to achieve their unique goals. As an author, Amber shares insights and advice on how to successfully open and manage a thriving product-based small business, from concept through to launch.

Since joining Women 4 STEM as Chief Social Media Officer, Amber has worked to support the organisation and programs to increase it’s social media presence and create engaging content that showcases the important work that we do, driving change for women in STEM.

Ravi Sundram, Chief Digital Officer 

Bio coming soon!

Caroline Stainkamph, Executive Sponsor Grad Girls

Caroline Stainkamph is a collaborative and purposeful leader with 18+ years’ experience working in complex, matrix environments leading multi-disciplinary teams, who helps organisations navigate the collision between people, process and technology.

With a background spanning senior leadership roles, driving transformational initiatives, leading large technology delivery programs, program/change management and diversity and inclusion, she bring a strong background of building highly-engaged teams that deliver world class output.

Caroline has a proven track record of driving strategic initiatives that requires lateral thinking, deep insights and thoughtful approaches to solve complex business problems and is passionate about helping organisations achieve their best. Caroline builds strong relationships with key stakeholders including board members, C-Suite, senior leaders, employees and vendors.

Krys Northover, Program Lead Grad Girls Tech

Krys has spent over 18 years working in industries where women are often underrepresented, including IT and logistics. She’s built her career on resilience, adaptability, and the courage to challenge the status quo. As Senior Project Manager at GoDaddy, Krys is known not only for delivering results but also creating environments where every voice feels heard and valued. As a neurodivergent individual, she brings different ways of thinking and an empathetic approach, believing inclusion through an intersectional lens isn’t optional but essential. Since 2018, she’s been involved with Women 4 STEM, mentoring and driving authentic conversations about equity in tech.  

Melanie Northrop, Program Lead Grad Girls Sydney 

Bio coming soon!

K Leung, Program Lead Grad Girls Brisbane

Bio coming soon!

Wendy Lau, Program Lead Go Girl Go for IT

Bio coming soon!

Pooja Mathur, Program Lead mentor(SHE)

Bio coming soon!

Jo Baker, Program Lead IOW

Bio coming soon!

Erin Bowen, Program Lead What’s Hot in Tech

Bio coming soon!