Former EA Germany boss Joerg Trouvain and global chief customer officer Brian Hodous are re-shaping the business following the departure earlier in the year of Tricia Bertero.
Market share has already improved significantly, after tumbling down the Top 10 in most major European territories last year.
But the departure of marketing director Scott Morrison to Australia and head of PR Tim Ponting to Game Domain International will add to the need for new faces.
“It’s a regretful reality of business that like other publishers, we’ve seen talent churn as Activision moves forward. But we look forward to the opportunities ahead of us as we step up to the next-gen plate and upgrade our business leadership capabilities,” UK general manager Andrew Brown explained to MCV.
“With the growth we are seeing in our business and such a great roster of games, we have created a number of positions across all areas of the business to deliver on the objectives ahead.
“We are looking to hire the best talent from within and outside the industry to join us to achieve our goals. Activision is a great place to work again, and we’re looking forward to welcoming the best the industry has to offer.”
Activision hopes to build on the recent success of Spiderman 3, which took its market share close to arch rival Electronic Arts for the first time in three years – when the company was enjoying its golden era under Scott Dodkins and Roger Walkden in Europe and the UK.
Key titles for the second half of the year include Transformers, Call of Duty 4, Bee Movie, Guitar Hero Encore, Guitar Hero III and Lego Star Wars Saga.