Arup (officially Arup Group Limited) is a multinational professional services firm headquartered in London which provides engineering, design, planning, project management and consulting services for all aspects of the built environment.
 The firm has over 14,000 staff based in 92 offices across 42 countries, and is present in Africa, the Americas, Australasia, East Asia, Europe and the Middle East.
 Arup has participated in projects in over 160 countries.
gkkworks is a multinational professional services firm headquartered in Irvine, California, United States which provides architecture, interior design, planning, construction, construction management, program management, and design-build services for all aspects of the built environment.
< Markets include K-12 and higher education, healthcare, hospitality, commercial, government, and critical facilities.
 The firm has offices in the United States (Irvine, Pasadena, Riverside, San Diego and Denver); and India (Pune).
MinterEllison is a multinational professional services firm based in Australia.
 The firm has offices in five countries and 15 cities, including in every Australian capital city, London, Hong Kong, Shanghai and Ulaanbaatar.
 By number of Australian lawyers it is the largest provider of legal services in Australia.
 In the 2016 Acritas brand index, the Firm was named in the top 10 law firm brands in the Asia Pacific region, being regarded for "top-level litigation" and for "high-value work".
Samoo Architects & Engineers (SAMOO), headquartered in Seoul, South Korea, is a multinational professional services firm which provides architectural design, engineering, interior design, urban design, sustainable design, construction management, and
TMF Group is a multinational professional services firm headquartered in Amsterdam, the Netherlands.
 The independent group provides accounting, tax, HR and payroll services to businesses operating on an international scale.
 TMF Group employs more than 6,000 staff and has 100 offices in over 80 jurisdictions.
Parsons Brinckerhoff is a multinational engineering and design firm with approximately 14,000 employees.
 The firm operates in the fields of strategic consulting, planning, engineering, construction management, infrastructure and community planning.
 In 2013, the company was named the tenth largest U.S.-based engineering/design firm by "Engineering News Record".
 On October 31, 2014 Parsons Brinckerhoff became a wholly owned independent subsidiary of WSP Global, a Canadian-based professional services firm.
 Together, WSP/Parsons Brinckerhoff is one of the largest professional services firms in the world with approximately 31,500 employees in 500 offices serving 39 countries.
EY (formerly Ernst & Young) is a multinational professional services firm headquartered in London, England.
 EY is one of the largest professional services firms in the world and is one of the "Big Four" accounting firms.
PricewaterhouseCoopers (doing business as PwC) is a multinational professional services network headquartered in London, United Kingdom.
 It is the second largest professional services firm in the world, and is one of the Big Four auditors, along with Deloitte, EY and KPMG.
 Vault Accounting 50 has ranked PwC as the most prestigious accounting firm in the world for seven consecutive years, as well as the top firm to work for in North America for three consecutive years.
SSA Architects (officially known as Sandeep Shikre & Associate Pvt, Ltd.) is a professional services firm headquartered in Mumbai, Maharashtra, India which provides engineering, design, planning, Architectural and consulting services for all aspects of the built environment.
 The firm is present India with three offices located in Mumbai, Pune, and Bangalore has more than 310 staff based in the two offices.
 SSA Architect has participated in over 125 projects in past 27 years.
Nille Juul-Sørensen (born 12 June 1958) is a Danish architect.
 He was CEO of Danish Design Centre in Copenhagen from 2011 until 2014 and now holds the position as Director of Architecture at Arup in London.

Question: Who holds the Director position in a multinational professional services firm headquartered in London?
Answer: Nille Juul-Sørensen