LONDON, United Kingdom — Our Monday Mantra contains curated career advice from leading executives, entrepreneurs and creatives in conversation with BoF. Today's mantra comes from Brunello Cucinelli (read the full interview here), founder and chief executive of Brunello Cucinelli:

<span>It is difficult to do everything, but if you specialise in one thing, you can focus with your head bent over one single thing, the whole day, and you have less likelihood of getting things wrong.</span>

This week, we are pleased to introduce three new partners to BoF Careers.

Contemporary fashion label Theory was founded by American mogul Andrew Rosen in 1997. Now owned by Fast Retailing of Japan, but with a global reach, the brand currently seeks a technical designer and product developer for their New York office.

Once the global creative director at Oscar de la Renta, Adam Lippes launched his namesake label in 2004. Anchored in fine fabrics, impeccable tailoring, and with a distinct American heritage, the brand is hiring a communications director and digital marketing manager to join the team in New York.

Founded by Tony King, creative agency King & Partners works with a range of fashion and lifestyle brands on driving content, social strategy and branding, as well as on digital, mobile and app development. The company is seeking account managers for their offices in London and New York, and front end developers.

Here is a selection of the exciting opportunities on BoF Careers:

Marketing Manager, Ermenegildo Zegna – New York, United States

Sales Director, Oyuna – London, United Kingdom

Art Director, BCBGeneration – Los Angeles, United States

Retail Marketing Executive, Monica Vinader – Hong Kong, China

Embroidery Design Assistant, Mary Katrantzou – London, United Kingdom

Product Developer, Theory – New York, United States

See all of our jobs and career-related content on BoF Careers, the global marketplace for fashion talent.