The Suffolk agency advises clients, including BT, HTC and Ofcom, on strategic management consultancy and specific marketing programmes.
Howlett-Davey has managed a range of high profile brands including Dell, Microsoft, Sony, Yahoo, P&G and Greene King, as well as Colchester Borough Council.
Before joining Barratt Developments in February 2012 he was head of PR for EC Harris, the building consultancy firm.
He has also worked at agencies including FleishmanHillard and Band & Brown.
Dr Nick Milner, managing director of Milner Strategic Marketing, said: "Milner specialises in PR for both private and listed technology companies and, from the beginning of his career, Paul has worked with a number of the top technology brands. Paul will be an invaluable asset to our PR team and we look forward to welcoming him in June."