Since 2014, we’ve turned the way companies work into the advantage that sets them apart.
We’re for leaders who want to scale — and we make performance something you can design.
Real change is built inside the business, with the people who run it.
That’s where we work: senior practitioners on your actual problem, building the system alongside your teams, and staying until it runs without us. The work is yours to keep. The outcome is ours to stand behind.
Every engagement is led by the people you meet — senior partners from the first conversation to the last.
The depth of a full leadership bench, with the focus only a boutique can give.
Angelo De Silva
Founder & Managing Director
The architect of Sandbox's frameworks and its principal consultant. A psychologist by training, a former Head of Learning & Development at Dialog Axiata, founder of the award-winning production house Technics Intermedia, and author of two SLIM marketing textbooks. He has advised 15+ global corporates, including several Fortune 500 companies, and led work for 60+ organisations across 20 sectors. Advisor to the Board of Investment of Sri Lanka and to several universities.
Menaka Mayadunne
Director, Operations
15+ years in operations and delivery. Menaka leads project operations, resource management and internal systems, so every engagement lands with precision across Sandbox's portfolio.
Dayan Gunasekera
Chief Financial Officer
A Fellow of CIMA with 20+ years of senior leadership across apparel, FMCG, logistics, hospitality and manufacturing. Dayan brings the financial discipline that ties every engagement to measurable business value.
Senior specialist panel
Beyond the principals, Sandbox draws on a panel of senior specialists who lead engagements in their fields.
Ruchira Galappatthy
Commercial, revenue and go-to-market growth.
Mendaka Hettithanthri
Engineering and sustainability leadership (PMP).
Shazil Ismail
Finance, governance and commercial discipline (FCA).
Rukshan De Silva
Leadership development and executive coaching (PCC).
We work as a partner in your business.
We sit with your leadership, work shoulder to shoulder with your teams, and treat your numbers as the scoreboard. We stay until the change is live and owned — and when we step back, the capability stays with you, written into your Business Codex©: the operating system for how your company performs, yours to keep and build on.
We stay until it's running
We do not hand over a strategy and leave. We stay until the system is live inside your business — embedded, owned, and producing results you can measure.
Twelve years. Proven.
30%
of Sri Lanka's top 100 listed corporates
10,000+
professionals developed
2024 Global Recognition Award
for Consulting Excellence
