The head of Belfast IT company Kainos, which has doubled half-year pre-tax profits to £24m, has said it is likely to "pause" plans to move to new-build offices.
Revenue for the six months to the end of September at the plc - the only Northern Ireland company listed on the main London Stock Exchange - was up 23% to £107.2m, according to its interim report.
The company said it's seen increasing demand for its IT services during the Covid-19 pandemic and will be recruiting 150 new people to meet the growing demand.
Kainos itself also adopted home working for its staff, with just 3% of its 1,729 employees now back in the office.
Around 131 staff had been placed on furlough at the outset of the pandemic, but the company said it has since repaid to the government the money received from its Coronavirus Job Retention Scheme.
It has 465 customers for its digital services and Workday divisions, including private companies such as Warner Music and Blackberry.
The UK government is also a major client as Kainos works on its digital transformation, with public sector work accounting for 46% of revenue. Commercial sector clients account for 37%, and healthcare clients 18%.
Chief executive Brendan Mooney said it had been working on supporting the NHS' home-testing regime through the pandemic.
"20,000 home tests are ordered on a daily basis and are processed through Amazon, he said. "We are responsible for handling the capacity for that home testing, how many kits there are available, and doing some verification - at the start, for example, verifying that someone worked for the NHS, which was part of the initial roll-out. Now it's taking them through symptoms. That's the current engagement and it continues to be busy as testing continues."
Kainos is based in Upper Crescent off Botanic Avenue and had been planning for a move to new-build offices on the former site of the Movie House Cinema on Dublin Road.
Mr Mooney said that process was being "deferred". "We're continuing with the planning process but we'll probably take a pause as we observe how the roll-out of the vaccine happens and how comfortable people are to be back travelling to an office setting.
"In general, people in the company say they like working from home and they like working in the office so they probably think they'd like three days a week in either location. We'll just see how that works out.
"If it's going to be more occasional attendance we probably have capacity right now to handle all our people in Belfast. But obviously we're growing and at some point will need the space."
He said the company has been working with the government on some IT systems around Brexit, and a programme to help ensure the safety of food and other imports, particularly around livestock, animal parts and chemicals, had been live since March last year. But he said Kainos had no involvement in providing customs software.
Last week company Agency Sector Management warned that there was doubt over whether a system for enabling trade between Great Britain and Northern Ireland would be ready for January 1.
Mr Mooney said: "I think generally there will be a degree of confusion around what the environment will be post-EU exit. I think there will be a delays and confusion but I would hope we're not in a situation where goods like foodstuffs are spoiling on a quayside because someone hasn't filled out the right form.
"I'd like to think that because of Covid there's a much more accommodating mindset between the EU and UK."
He added that the firm was "confident in our outlook for the financial year, which is underpinned by a robust pipeline and a significant contracted backlog".