About the firm

A rare combination: enterprise technology and finance, under one roof.

Founded in 2022 and based in Johannesburg, Mannanam Services is a two-principal consulting firm working remote-first across South Africa, SADC and the wider continent.

The problem we solve

Modernisation decisions are made in two rooms that never meet.

We help enterprises modernise legacy technology — and, uniquely, we connect that transformation to its financial and tax consequences. Most consulting firms offer one or the other. We do both, in an integrated way.

When the architecture and the financial model are built by the same firm, the tax position, the cash impact and the benefits case are designed in from the start — not discovered in year two.

At a glance

  • Founded March 2022
  • Johannesburg, South Africa · remote-first
  • Two-principal firm, building an associate network
  • Microsoft enterprise stack specialists
  • Integrated technology + finance capability
The principals

You work directly with the people doing the work.

GH

George Havvas

Principal Technology Consultant

30+ years of hands-on software development and technology leadership, specialising in enterprise systems modernisation, Microsoft stack architecture, AI-driven systems and data platform design.

GH

Giselle Havvas

Principal Finance & Tax Consultant

CIMA-certified Tax Management Accountant with deep expertise in financial consulting, tax strategy and management accounting for enterprise clients.

Our differentiators

Why clients choose us.

01

Real delivery experience

30+ years of hands-on technology leadership across complex enterprise environments — not theoretical, not vendor-driven.

02

Microsoft enterprise depth

SQL Server, Azure, Power BI, M365 and DevOps — the platforms most South African enterprises already run.

03

Tech meets the balance sheet

A senior technologist and a CIMA-certified tax specialist in one firm — a combination that is rare in the South African market.

Who we work with

Large corporates and enterprise organisations.

We work with enterprises in legal and compliance, financial services, and multi-industry corporate environments — typically where a technology investment needs rigorous financial justification, or where the CFO and CTO need to be aligned on a major programme.

Engagement models

  • Project-based — fixed scope and fee for defined deliverables
  • Retainer — ongoing monthly advisory and execution support
  • Day rate — for advisory, architecture and review work

Let's talk about your estate and your numbers.

Whether it's a modernisation programme, an architecture review, or a finance transformation, we'd like to understand the problem you're solving.

Get in touch