Metrum Team


Our Directors are passionate about the industry and committed to the success of your business as well as their own. They are personally involved in every single project, whether big or small, either as a lead consultant or in an overseeing capacity.

sven retzlaff

Sven Retzlaff


Sven has over three decades’ worth of experience under his belt and the qualifications to match.
There are few project managers who understand the Clients’ needs better than he does. And even fewer who are actively determined to fulfill those needs.
He has been involved in the development and management of numerous prestigious projects and aside from building a wealth of experience, he has earned an excellent reputation in the industry for his unerring integrity, leadership prowess and consistently successful project completion.
He is highly respected, valued and trusted by both his Clients and his peers.
Sven specialises in Professional Project Management and currently holds the position of Director at Metrum.

Paolo Onofri

Paolo Onofri


Paolo is a completely hands-on director and expert at solving Clients’ challenges.
During his over 20 year career in contracting, development and project management, he has headed many illustrious and vastly successful developments both locally and internationally, including Dubai and Mauritius.
Metrum’s Clients benefit from his wealth of experience across all fields in the industry as well as his personal and direct involvement with each and every project he manages.
Generous with his time, uncompromising when it comes to maintaining standards, and highly regarded by his fellow professionals for his integrity, problem-solving abilities and principles.
Paolo specialises in Professional Project Management and currently holds the position of Director at Metrum.

Planning, Technical and Administrative Expertise

A project is only as good as the people who work on it. At Metrum, we are very careful to assemble a specific management team for your project based on your particular requirements and deliverables. This includes a project director as your direct contact for the duration of the project, supported by a number of senior project managers and our in-house planning department, depending on the project scope.

thebe modisakeng

Thebe Modisakeng

Project Manager

Thebe joined Metrum in 2012 as a Senior Project Manager and has over 25 years’ experience in the industry. He holds a Higher National Diploma in Civil Engineering from Wits Technikon and has extensive experience managing projects on a wide range of developments. He currently manages a number of high-value and complex projects at our Steyn City development and has proven to be an invaluable member of the team - for both the client and his fellow professionals.
His Professional Memberships and Affiliations include Corporate Membership with the ACPM, Corporate Membership with the GBCSA and Corporate Membership with SAPOA. He is also an accredited SACPCMP professional.

keith macgillivray

Keith MacGillivray

Project Manager

Keith joined Metrum in 2014 as a Project and Construction Manager and is an accredited candidate with the SACPCMP.
He has an additional 6 years’ experience as an architect with a B-Tech Architectural Technology Degree from the University of Johannesburg and achieved professional status through the South African Council for the Architectural Profession (SACAP).
His extensive experience in architecture, construction and project management has ensured his ongoing success as a professional project manager. This experience coupled with his meticulous attention to detail, excellent interpersonal and communication skills, and collaborative management style has made him an invaluable member of the Metrum team.

rowan bryant

Rowan Bryant

Project Manager

Rowan holds a BSc in Construction Studies, an Honours in Quantity Surveying, has completed a number of professionally recognised project management courses and is an accredited Professional Construction Project Manager (Pr.CPM) with the SACPCMP.
He joined Metrum in 2015 and is a valuable member of the project management team.
His extensive experience in both construction and professional project management includes medium to large-scale projects covering retail, commercial, education facilities, government offices, civils, renovations and salvage.
Rowans’ strengths lie in strong budgeting and financial management skills, which have directly impacted the successful outcome of the diverse range of projects he has managed. These strengths, coupled with his extensive experience reinforces his proficiency as a Professional Project Manager.

Gavin Sleater

Project Manager

Gavin graduated from the University of Witwatersrand in 1991 with a BSc in Quantity Surveying.
His career in the construction industry spans 23 years, and includes positions from Contracts Manager and Senior Facilities Manager, to Senior Portfolio Manager, Development Manager, Senior Project Manager and finally Projects Director.
He joined the Metrum team in 2017 and his successful management of high value and complex developments in the Commercial, Retail, Leisure and Industrial sectors has added immense value to the Professional Project Management position he holds in the company.

Nic Fee

Project Manager

Nic joined Metrum in 2019 and has added considerable value to our professional team with his qualifications and more than 25 years’ experience in the construction industry.
Most notable is his extensive experience as a senior contract director, managing high level, multi-disciplinary cross border operations in Zambia, Mozambique and South Africa.
Nic’s professional qualifications include a BSc in Building Management, professional accreditation with the SACPCMP, and is currently studying towards his Arbitration certification through the Association of Arbitrators of Southern Africa.

dario souto

Dario Souto

Project Manager

Dario has over 10 years’ experience in project and construction management and currently manages a number of Metrum’s high-profile projects in Mozambique. He has a BSc Construction Management degree from the University of the Witswatersrand and has managed a diverse range of projects including apartment blocks, offices, clinics, community centres, hotels and schools. His strengths lie in project co-ordination, development management, contract administration, programming and time management, and project controls. He is a corporate member of the ACPM (Association of Construction Project Managers) and is registered with the MOBH.

Jason van Tonder

Jayson van Tonder

Project Manager

Jayson has 14 years’ experience in the construction industry, the varied skills he has attained from his multiple roles and responsibilities in the field have ensured his success as a professional Project and Construction Manager. He has a National Diploma in Management from Tshwane University, has completed a number of PMI accredited Advanced Project Management courses through UCT and is an accredited member of the SACPCMP. With his keen eye for detail and excellent problem-solving abilities, he is a resourceful and innovative addition to the Metrum team. Jayson is currently managing a number of our high-value industrial and commercial contracts for FNB and Investec Property.

john haefele

John Haefele

Project Manager

John graduated from Wits University in 1999 with an Honours Degree in Building Sciences, Construction Management and Economics. John’s superior qualifications are partnered by his 15-years’ experience on some of South Africa’s largest commercial projects, in positions ranging from Residential Development Manager, National Projects Planner, Contracts Manager, Project Manager and is currently Senior Project Manager for Metrum.
John’s exposure includes a strong contracting background, and through this experience, has gained a solid understanding of the importance of communication and networking as well as the logistical, planning, procurement, tender procedure, QA and management challenges on large scale projects from the feasibility stage all the way through to post completion.