Technical software covers a wide range of uses, such as software embedded in devices (eg engine management units in cars), software to control bespoke experiments (eg testing boiler efficiencies using different hardware) and novel manufacturing processes.
There are a number of distinct classes of technical software- process plant, for example, will typically use SCADA (Supervisory Control And Data Acquisition) software to ensure it runs safely and efficiently.
You will usually know when you need technical software- you'll have something that is either done manually (high cost, low reliability) or something that is too hard to do manually. This would be a good point to give us a call on 0115-840-5500 to discuss the way forward. There are usually many options for tackling this class of problem, but we can't tell you about them until we've seen what the issue is.