Marketing and sales software firm Salesforce is set to create more jobs in Ireland as part of a planned European expansion of 1,200 staff over the next year.

Many of the roles will be based in the UK, where Salesforce has its largest base outside the US.

Although the company is not giving a breakdown of the number of people it will employ in specific countries, it is understood its Irish operation is set to gain a large number of jobs.

Salesforce currently employs around 700 people at its Sandyford office in Dublin.

The company is already recruiting for business development executives, technical support staff, engineers, sales staff and account executives on its careers website.

The announcement comes as Salesforce held its World Tour event in London.

It will also expand its UK headquarters to include an executive briefing centre.

The firm reported on Wednesday a 28 per cent increase in revenue in constant currency terms for the first quarter of its fiscal year, which ended on April 30th, 2016.

Revenue was $1.92 billion, with subscription and support revenues up 26 per cent year on year to $1.78 billion and professional services and other revenues accounting for $141 million.

Chief executive Marc Benioff said it was the best first quarter the company had ever seen. In a call to analysts, he said the company was well positioned for another great year.

For the full year, Salesforce said it expected revenue of $8.16 billion to $8.20 billion and adjusted profit of $1.00 to $1.02 per share, higher than initially expected and up to 23 per cent more than the same prior a year earlier.