Darren KoayChief Information Officer

Darren Koay · Chief Information Officer · Singapore / Southeast Asia

From the bill run to the committee paper

CHAPTER 1

Mar 2021 — Present

Chief information officer

Kemaruna Fibre Sdn Bhd

Sector
Fibre home broadband, business connectivity, a streaming-television add-on and resold mobile SIMs
Ownership
Private; 65 per cent owned by the private-equity fund Corvanthe Equity since 2021, 35 per cent by the founding family
Company scale
RM 512 million revenue in 2025
Employees
About 1,420, plus fourteen contracted installation firms
Geography
Bayan Lepas, Penang headquarters; Penang, Kedah, Perlis and northern Perak
Reporting to
Chief executive; presents quarterly to the board's audit and risk committee
Team
126 colleagues through five managers, plus about 60 contractor staff
Financial scope
2025 technology budget of RM 38 million operating and RM 27 million capital; the RM 21 million billing replacement programme

Mandate

Replace the in-house billing system, decide where systems should run under the new owner's cost plan and reduce the personal data the company holds.

Outcomes

  • Cut over 255,000 accounts to a convergent billing platform in February 2024, with 69,300 card arrangements transferred between processors
  • Moved billing, customer management and the portal to a public-cloud region while keeping authentication on two owned sites; RM 2.5 million saved in 2025
  • Reduced scanned identity documents held from 412,000 to 8,900
  • Introduced an annual supplier-dependence register reviewed by the audit and risk committee

Decisions in context

As chief information officer I answer for every system between our fibre network and the subscriber's account: billing and payments, operations support, the self-service app, infrastructure, security and data protection. Network engineering standards sit with our chief technology officer, and the hosting split was agreed with him. The owner's plan required three large changes in five years. I sequenced them so that one household moment stayed stable while another moved: billing first, in February 2024; hosting through 2024, with authentication kept on our own sites; and data reduction in 2025. I manage 126 colleagues through five managers and about 60 contractor staff. My quarterly committee papers state the cost of each choice alongside its benefit, and the committee now receives the supplier-dependence register every year. I attend board discussions as an executive presenter and do not hold a directorship.

Reason for the move

Current role; I would add one external board seat only with my chief executive's consent.

CHAPTER 2

Jul 2017 — Feb 2021

Head of BSS and IT operations

Kemaruna Fibre Sdn Bhd

Sector
Fibre home broadband and apartment-block connectivity
Ownership
Founding-family owned private company
Company scale
About RM 371 million revenue in 2020
Employees
About 1,050 at period end
Geography
Penang, Kedah and northern Perak
Reporting to
Chief operating officer
Team
48 people across billing, applications and IT operations
Financial scope
Annual IT operating budget of about RM 19 million; billing, provisioning and contractor field systems

Mandate

Stabilise an in-house billing system with little documentation and move installation orders off spreadsheets.

Outcomes

  • Documented the monthly bill run and trained two analysts alongside its last original developer
  • Introduced scan-to-activate provisioning, cutting order-to-activation time from 6.2 days to 2.9
  • Absorbed nearly double the usual order volume after March 2020 without extending activation times

Decisions in context

I joined Kemaruna Fibre to run a billing system I had not built and an installation process that lived on spreadsheets. The billing code had one remaining original developer, so my first step was to pair two analysts with him and write down the monthly bill run, step by step. Then I turned to activation: orders passed from sales to planners to fourteen contractor firms, and a household could wait days for its fibre terminal to be switched on. We added a scan-to-activate step in the installers' app, linked to network inventory, which brought order-to-activation time down from 6.2 days to 2.9. It mattered most in 2020, when orders nearly doubled within six weeks of the movement control order. I reported to the chief operating officer and learnt how to argue for systems spending in an owner-managed company.

Reason for the move

Appointed the company's first chief information officer when Corvanthe Equity invested in 2021.

CHAPTER 3

Apr 2012 — Jun 2017

Platform delivery manager, later head of platform delivery

Solvantri Mobile Platforms Sdn Bhd

Sector
Hosted rating, charging and provisioning platforms for mobile virtual network operators
Ownership
Founder-owned private company with a minority financial investor
Company scale
About RM 74 million revenue in 2016
Employees
About 210 at period end
Geography
Kuala Lumpur; clients in Malaysia
Reporting to
Chief technology officer
Team
35 engineers and release staff at period end
Financial scope
Platform capacity and release budget of about RM 9 million a year; service commitments to six client operators

Mandate

Deliver releases, capacity and incident response across a shared platform used by six client brands.

Outcomes

  • Led the review of a 2014 charging-cluster failure and separated the reload service from the main cluster
  • Gave each client a written statement of which platform components it shared with others
  • Reported platform incidents to the company's board risk committee from 2015

Decisions in context

Solvantri hosted the systems behind six mobile virtual operators: rating and charging, SIM provisioning, number-portability messages and customer-care screens. I led platform delivery, which meant releases, capacity and incident response for all six clients at once. The commercial model encouraged one shared configuration, while each client wanted its own exceptions, and I learnt to say which exceptions the platform could carry safely. In 2014 a charging-cluster failure stopped reload sales for ninety minutes across every client brand. I led the review, and we separated the reload service from the main cluster. We also gave each client a written account of what it shared with the others, which some found uncomfortable to read. From 2015 I reported incidents to the company's board risk committee. I left because I wanted to answer to subscribers myself rather than through a contract.

Reason for the move

Wanted to be accountable to subscribers directly, inside an operator, rather than through a client contract.

CHAPTER 4

Jul 2008 — Mar 2012

Billing operations manager

Halvecrest Networks Pte Ltd

Sector
Enterprise leased lines, business internet and international data circuits
Ownership
Privately held; founders and a regional investment holding company
Company scale
About S$118 million revenue in 2011
Employees
About 340 at period end
Geography
Singapore headquarters; customers across Singapore, Malaysia and Thailand
Reporting to
Finance director
Team
Twelve people in Singapore
Financial scope
Monthly billing of about S$9.8 million; credit notes and the inventory-to-billing reconciliation

Mandate

Run the bill run, usage rating and credit control, and stop revenue leaking between network activation and billing.

Outcomes

  • Made a first charge a condition for closing any circuit order
  • Introduced a monthly exceptions report with a named owner for each mismatch
  • Reduced leakage found in that report from S$1.9 million in 2008 to S$0.2 million in 2011

Decisions in context

After the unbilled-circuit review, Halvecrest asked me to run billing operations: the monthly bill run, usage rating for internet-transit customers, credit notes and the reconciliation between network inventory and billing. I reported to the finance director and led twelve people. I introduced a rule that a circuit order could not close until its first charge existed, and a monthly report listing every live circuit without a charge, every charge without a live circuit and the person responsible for each exception. Engineering managers disliked the rule because it delayed some handovers, so we agreed a fast track for urgent orders with a seven-day reconciliation. Leakage identified in the report fell from S$1.9 million in 2008 to S$0.2 million in 2011. The role taught me that a control works when somebody owns each exception, not when a report exists.

Reason for the move

Returned to Malaysia for family reasons and to work on mobile platforms.

CHAPTER 5

Feb 2004 — Jun 2008

Billing systems analyst

Halvecrest Networks Pte Ltd

Sector
Enterprise leased lines and business internet
Ownership
Privately held; founders and a regional investment holding company
Company scale
About S$96 million revenue in 2007
Employees
About 290 at period end
Geography
Singapore headquarters; customers across Singapore, Malaysia and Thailand
Reporting to
IT applications manager
Team
One of nine analysts; no direct reports
Financial scope
Rating rules, interfaces and fixes for the business billing system

Mandate

Maintain billing, order-management and portal interfaces for business customers.

Outcomes

  • Traced a fourteen-month unbilled leased line to a silent activation failure
  • Matched every live circuit to a billing record and found forty-one more unbilled circuits worth S$1.3 million a year
  • Added an acknowledgement message for every activation sent to billing

Decisions in context

I joined Halvecrest's applications team as one of nine analysts supporting billing, order management and the customer portal for business clients. My work was rating rules, interfaces and fixes to the bill run. The defining episode came in 2006, when a customer asked why its Kuala Lumpur leased line had never been invoiced. I traced the order and found that the activation message had failed silently between the provisioning tool and billing. With the network inventory team, I spent three weeks matching every live circuit to its billing record and found forty-one more unbilled circuits worth S$1.3 million a year. The remedy was partly technical, an acknowledgement for every activation, and partly about ownership, since someone had to be named for each mismatch. That piece of work led directly to my promotion into billing operations in 2008.

Reason for the move

Promoted to billing operations manager after the circuit review.

CHAPTER 6

Jul 1998 — Jan 2004

Programmer, later systems analyst

Desaramu Systems Sdn Bhd

Sector
Billing and customer-account software for utilities and communications providers
Ownership
Privately owned software house
Company scale
About RM 22 million revenue in 2003
Employees
About 140 at period end
Geography
Kuala Lumpur; clients in Peninsular Malaysia
Reporting to
Development manager
Team
Member of a twelve-person account-module team; no direct reports
Financial scope
Assigned modules and client change requests

Mandate

Build and then specify changes to the account and usage-rating modules for client companies.

Outcomes

  • Specified tariff changes for three water utilities and two paging operators
  • Rebuilt the usage-rating module for clients moving to flat monthly internet plans
  • Supported client bill runs on site and fed operating problems back into design

Decisions in context

Desaramu Systems wrote billing and customer-account software for water utilities, paging operators and dial-up internet providers. I started as a programmer on the account module and became a systems analyst in 2002, specifying changes that clients requested. A tariff rule built for one water utility would be stretched to fit the next, and I learnt to ask what the original rule had assumed before altering it. I also spent nights at client sites during bill runs, which showed me how billing staff worked around the limits of our software. When two dial-up clients introduced flat monthly plans, our usage-rating module had nothing to rate, and we rebuilt it rather than add another patch. I left in 2004 because I wanted to work inside an operator, where the bill and the network belong to one company and nobody can blame the vendor.

Reason for the move

Wanted to work inside an operator, where the network and the bill belong to the same company.

What I am looking for next

I intend to remain chief information officer at Kemaruna Fibre and add one non-executive appointment where my experience with subscriber systems helps a board's oversight. The closest fit would be a Malaysian or Singaporean company in telecommunications, payments, utilities or another business that bills many households each month and relies on a few critical suppliers. I would expect to join an audit and risk committee, or a technology and risk committee where one exists, and I am not seeking a chair. My chief executive has agreed in principle to one external seat, subject to a conflicts review and the board calendar, and I can offer up to twenty-two days a year. I would not join the board of a broadband or mobile provider competing in our northern region, nor of any supplier to Kemaruna Fibre. Over a longer horizon I expect my executive career to stay in operator technology leadership, possibly at a larger multi-country operator.