Daniel Weil qualified in architecture from the University of Buenos Aires in his native Argentina in 1977. He then relocated to London to study industrial design at the Royal College of Art, where he received his MA (RCA) in 1981. From 1982 to 1990 Daniel designed and manufactured his own products and, between 1985 and 1991, was a partner in Weil and Taylor, London.

Daniel joined Pentagram as a partner in 1992. His projects have included products, packaging, interiors, and art direction. He has implemented comprehensive design strategies for airline clients encompassing cabin interiors, seating, tableware, amenities, staff uniforms, check-in systems, and airport lounge interiors.

Daniel was Professor of Industrial Design, Vehicle Design and Design Management at the Royal College of Art 1991-1995. He was Unit Master at the Architectural Association 1982-1986 and is a Senior Fellow of the Royal College of Art.