The company is looking for safety consultants, project managers and mechanical and electrical engineers.
Amec is part of the Nuclear Management Partners consortium, whose £22bn Sellafield clean-up contract was renewed earlier this month.
Clive White, president of Amec’s Clean Energy Europe business, said: “This reflects the growth of our nuclear business, not only in the UK but across the wider Europe. We have already created around 250 jobs across the business so far this year and are planning to increase those numbers by a further 300 in the months to come.
“AMEC is the leading nuclear services company in the UK, serving both the UK and international market. Our ambition is to retain and extend this leading position in the UK and continue to grow to become the leading nuclear services business across Europe.
“Our business has expanded significantly in recent years and if we are to continue to give our customers the world-class service they have come to expect from us, then we need to significantly add to our already exceptional range of skilled people.
“These highly skilled positions will focus across the whole spectrum of our business – from new build programmes and reactor operations support, through to our waste management and decommissioning activities in the UK and Europe and also our business within the defence sector.”