About Us
Sigma IT is a New Zealand IT services company focused on delivering reliable, secure and scalable technology solutions for businesses of all sizes.
Founded by Donald Singh and Hamish Leys, experienced technology professionals with many years across the IT and wider technology industries, Sigma IT combines strong technical capability with extensive commercial and technology management experience.
While Sigma IT was established in 2026, the experience behind the company goes back many years. Donald and Hamish have previously worked together and bring backgrounds spanning managed IT services, cloud technology, cybersecurity, networking, telecommunications, security, automation and audiovisual technology.
That experience has also included senior management and national roles within New Zealand technology businesses, providing Sigma IT with an understanding of technology from both the technical and business perspectives.
Sigma IT was established with a clear goal: to provide straightforward, dependable IT services without unnecessary complexity.
Sigma IT focuses on what matters most to businesses:
• keeping systems running
• protecting business data
• enabling staff productivity
• providing responsive support
By combining proactive monitoring, modern cybersecurity tools and extensive industry experience,
Sigma IT provides its clients with a knowledgeable and dependable technology partner.
Sigma IT – Your Total Tech Solutions Partner.
Donald
Singh
Hamish
Leys
What we do
Keep your business running smoothly with proactive IT management and responsive support. We look after your everyday technology, resolve issues and help reduce downtime so your team can focus on their work.
Protect your business, people and data with practical security measures. We help identify risks and strengthen your defences against cyber threats, giving your team greater confidence as they work.
Give your team the tools to work together wherever business takes them. We help you get more from Microsoft 365 and cloud services, with straightforward setup, migration and ongoing support.
Stay connected to your customers and each other with internet and phone solutions suited to your business. We help simplify communications so your team can collaborate and respond efficiently.
Be ready to recover when the unexpected happens. We help protect your critical data and plan for recovery, reducing the disruption caused by accidental deletion, equipment failure or a cyber incident.
Get the right technology for the job without the guesswork. We help you choose and source equipment that fits your needs and budget, then handle setup so your team can get to work.
Keep your people and devices connected with a dependable, secure network. We design, improve and support wired and wireless connections to deliver consistent coverage and support your business as it grows.
Make confident technology decisions with clear, practical advice. We help you prioritise improvements, plan investments and build an IT roadmap that supports your business goals.
“Sigma IT empowers businesses across New Zealand with secure, reliable, and future-ready technology solutions. From IT support and cybersecurity to unified communications. we provide everything you need to stay connected and protected.”
We keep your business running by managing your IT systems, protecting your data, and supporting your staff.
Frequently Asked Questions - FAQs
At Sigma IT, we believe business technology should be reliable, secure and easy to understand. Whether you need ongoing IT support, stronger cybersecurity, help with Microsoft 365, new equipment or simply some advice, we're here to help.
Below are answers to some of the questions businesses commonly ask us.
If you're looking for a responsive and experienced Auckland IT company that takes the time to understand your business, we'd be very happy to talk.
Sigma IT Limited