Our Team
Meet the visionary minds behind Ruby International.
Our success is driven by a diverse team of experts who bring extensive experience in gemstone evaluation, operational efficiency and analysing market trends. Each team member plays a pivotal role in realising Ruby’s vision, ensuring transparent operations and community enrichment.
Organisation
Leadership structure
Our People
Leadership team
Chief Executive Officer (CEO)
Salim Alaudin Hasham
Our visionary leader, dedicated to advancing Tanzania’s gemstone sector through sustainable practices and community-first innovation, both at home and on the world stage.
Executive Assistant to the CEO
Mariam Jabir Joshua
Mariam supports the CEO’s strategic priorities and ensures smooth coordination across Ruby International’s growing portfolio of projects and partnerships.
Managing Director, Ruby International Tanzania
Betold Tryphone Matambala
A dedicated professional expertly overseeing all Tanzanian operations, driving excellence and growth across every active site.
Managing Director, Ruby International Bangkok
Mohamed Shanavaz
A skilled professional leading with a dynamic vision, fostering innovation and excellence across all Bangkok operations.
Director, Business Development & Investments
Baraka Nelson Peneza
Baraka leads the identification, structuring and advancement of Ruby International’s strategic partnerships and new project initiatives.
Chief Accountant
Ibrahim Matonela Ngunangwa
Oversees financial operations, reporting and regulatory compliance across Ruby International’s mines and offices, safeguarding the transparency and fiscal discipline that Ruby International upholds.
Head of Engineering
Peter Joseph Rimoy
Leads technical and engineering operations across every active site — from open-cast pits to underground workings at Mererani — upholding the safety and operational standards that define Ruby International’s Zero Harm commitment.