WSP & Golder Utilising strong in-house expertise and digital tools , WSP stands out as a market-leading provider of sustainability consulting services . The global firm started more than 130 years ago as a local firm . With its recent acquisition of earth sciences and environmental consulting firm Golder , WSP has approximately 14,000 of its 55,000 professionals dedicated to catering to clients ’ sustainability needs .

Throughout 2019-2021 , it acquired more than 14 different firms — including Golder — along with their expertise , widening the range of its market reach and competitive offerings .

Bain & Company

One of the world ' s leading management consulting firms , Bain & Company has been in the industry for more than four decades . It offers uniquely tailored , pragmatic , holistic , and enduring solutions for each of its clients on their most critical issues , including strategy , operations , and technology .

Bain & Company has provided sustainability solutions for more than 600 client projects in the past two years . It has also shown efforts in tackling critical environmental challenges by providing pro-bono consulting to leading nonprofits as part of its 10-year , $ 1.1bn commitment , which also includes a multi-year partnership with The Nature Conservancy .

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