Welcome to Terzo Digital
Welcome to Terzo Digital
Delivering IT Consultancy, Software Design and IT Project Management to the

Supporting the development of your software project

Software Design
Software engineering from product inception to completion
Project Management
Our expertise and goal driven approach ensures a successful project outcome
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Terzo working with OT Managers in Utility Companies

You can trust Terzo Digital to bring structure to your projects when:

  • Your team is stretched and you need hassle free support to deliver the project
  • You need specialist skills and experience on a troublesome project
  • It's time to try something cutting edge

With Terzo on board, you’ve one less thing to worry about, freeing up time to focus on meeting your goals.

Terzo working with Product Developers

You can trust Terzo Digital to help complete your IoT / IIoT product on time and to budget when:

  • You need specialist embedded skills to finish the product
  • A deadline is looming
  • A safe pair of hands to free up your time and manage your team

Terzo brings an all-around approach – Project Management, Design, Build, Test and Training.

Our Services

Mobile apps


When you have a perplexing challenge during the development of a software project, we're the software engineering experts you can rely on to find a solution.

Software design

Software Design

When a skills gap is jeopardising your software project, tap into our decades of software design experience to complete the job.


Project Management

You can count on TERZO when you have a challenging project and need a safe pair of hands to ensure it's delivered successfully.

Why Choose Us

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"Terzo have a credible background and from our first meeting I gained a good feeling that they were capable, genuine and trustworthy.”

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"Terzo were extremely flexible, always finding a way through. They had a good sense of what was needed and just got on with it. This was incredibly helpful to us.”

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"Terzo stood out because they were familiar with the DNP3 communications stack and were able to demonstrate their capability and expertise"

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WITS including WITS-DNP3 and WITS-IoT


Common interfaces for handling data from many sources.

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Our Clients

Pulsar Process Measurement

What our clients say

Mobile website optimisation

“When we started looking for a mobile optimized solution for one of our websites we turned to Terzo Digital for help. They were a great help with up-to-date knowledge of the best options available for us. They were able to quickly put together a solution for us which we are very happy with. I would highly recommend working with Terzo Digital for any mobile-related project.” Steve Mustard, Digital Technical Lead More about this project: Mobile optimised website

System performance report for major UK utility

“We employed Terzo Digital to assist in writing a report on issues with a client system. Terzo Digital planned the project, visited the client to run through the on site issues, collected and analysed system data and then produced the report which explained the issues and possible resolutions to the client. I was very impressed by the professional manner in which they conducted the work and the quality of the report they produced, as was the client.”

Paul Harding, Systems Software Manager, Metasphere
More about this project: System performance report for major UK utility

Complex C# business logic for telemetry company configuration application

“Whilst developing a complex configuration application, Metasphere called on Terzo Digital to develop a large portion of C# business logic.  They worked closely with us to get the job completed on time and in budget.  The code delivered was of a high standard, with full supporting documentation and rigorous testing completed;  highly recommended.”

Tom Child – Senior Applications Engineer

Sensor Integration, Security and IoT with Copper Horse

“It was a pleasure to work with Terzo Digital on both ground-breaking and complex problems in the Internet of Things. Utilising their expertise has not only furthered our own developments in IoT, but via the Picosec project outputs, we aim to contribute our work back to the IoT developer community and to the IoT Security Foundation. This will help to raise the bar of IoT security in products across the world”.

David Rogers, CEO of Copper Horse

More about this project: IoT and Security with Copper Horse

Representation on the WITS PSAC for Metasphere

“Metasphere engaged Mark Davison of Terzo Digital to continue its representation and input on the WITS PSAC (Protocol Standards Association Committee). Metasphere’s input to, and feedback on progress and developments of the protocol was influential as was Mark’s commitment, professionalism and integrity shown by Terzo in executing the work.”

Tim O’Brien, CEO of Metasphere

More about this project: Representation on WITS PSAC for Metasphere

Supporting nTrust Systems with a more complex website

“We were pleased to work with Terzo Digital who provided a safe pair of hands in supporting our customer’s complex, mission-critical website. Despite being an SME, they brought a big company’s mentality and professionalism in the service they offered.”

Russ McKenzie, Managing Director, nTrust Systems Limited

More about this project: Supporting a complex website migration.

Adding WITS-DNP3 to the Pulsar Ultimate Controller

Terzo assisted in project management and integration of WITS to our DNP3 RTU, their role was the coding of aspects of WITS into our existing DNP3 RTU, and building of test harness for regression testing. They produced appropriate documentation, time scales and milestones from their work and managed a ticket system for ironing out any bugs in the development and deployment stage in a professional manner”.

Dr Sang Tran, Technology Director at Pulsar Process Measurement Ltd

More about this project: Adding the WITS-DNP3 Protocol to the Pulsar Ultimate Controller

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