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List of professional services firms in San Francisco

Tamtam tracks 130 professional services firms headquartered in San Francisco. This list ranks the 30 largest by number of employees on LinkedIn, led by Globant, Gensler and URS Corporation, An AECOM Company. Their median headcount is 1,864. Half of them were founded in 1992 or later.

馃嚭馃嚫 San Francisco30 companiesUpdated Nov 11, 2026

These San Francisco-based professional services firms are predominantly large organizations specializing in IT services, legal practice, and financial services. Companies such as Globant, with over 28,000 employees, focus on digital innovation, while Sama specializes in data annotation for AI models. Orrick, Herrington & Sutcliffe LLP is a global law firm, and TPG is an alternative asset management firm.

A notable pattern among these firms is the strong presence of legal practices and IT consulting. Several companies, including Gensler and frog, also have a significant footprint in design and architecture, indicating a diverse professional landscape beyond traditional services.

#CompanyIndustryHeadquarters EmployeesFounded
1
Globantglobant.com

A digitally native company specializing in helping organizations innovate and unleash potential, with a focus on diversity, inclusion, and cybersecurity

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 28,419 n/a
2
Genslergensler.com

Global architecture, design, and planning firm with a network of 6,000+ professionals creating positive change through impactful design across various sectors worldwide

Architecture and Planning 馃嚭馃嚫 San Francisco 8,363 1965
3
URS Corporation, An AECOM Companyurs.com

A global professional and technical services firm offering design, construction, and operations of infrastructure assets worldwide for public and private clients

Civil Engineering 馃嚭馃嚫 San Francisco 8,221 n/a
4
Samasama.com

A global leader in data annotation solutions for enterprise AI models, focusing on accuracy, scalability, and ethical practices to advance computer vision AI development

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 4,350 2008
5
Andersenandersen.com

Global association of independent member firms with 14,000 professionals offering comprehensive solutions in accounting, law, and tax services worldwide With 2,000 personnel in the US

Financial Services 馃嚭馃嚫 San Francisco 3,560 n/a
6
TYLintylin.com

Design infrastructure solutions enhancing mobility, sustainability, resilience, and innovation to connect and elevate communities worldwide with advanced engineering approaches.

Civil Engineering 馃嚭馃嚫 San Francisco 3,321 n/a
7
Gordon Rees Scully Mansukhani, LLPgrsm.com

A nationwide law firm providing comprehensive litigation and business transaction services to public and private companies, with 1,200 lawyers across all states

Law Practice 馃嚭馃嚫 San Francisco 3,257 1974
8
Orrick, Herrington & Sutcliffe LLPorrick.com

Global law firm specializing in technology, energy, infrastructure, and finance sectors, providing pragmatic advice on transactions, litigation, and compliance worldwide.

Law Practice 馃嚭馃嚫 San Francisco 3,193 1863
9
BairesDevbairesdev.com

Expert partner in building high-quality software solutions with top tech talent Delivering scalable technology solutions for startups to Fortune Global 500 brands Unlocking business possibilities

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 3,174 2009
10
Morrison Foerstermofo.com

Providing tailored legal strategies and trusted partnerships to solve complex challenges for financial, technology, life sciences, and Fortune 100 clients.

Law Practice 馃嚭馃嚫 San Francisco 2,990 1883
11
Littlerlittler.com

Largest global employment and labor law practice representing management, providing comprehensive legal solutions across multiple continents and countries worldwide.

Law Practice 馃嚭馃嚫 San Francisco 2,984 1942
12
TPGtpg.com

Global alternative asset management firm focused on private equity, impact, credit, real estate, and market solutions through collaborative and innovative investment strategies.

Financial Services 馃嚭馃嚫 San Francisco 2,975 1992
13
Tallertaller.us

The company uses AI to provide expertly-matched tech teams from Latin America, helping businesses accelerate growth, reduce hiring time, and improve retention

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 2,669 2008
14
frogfrog.co

Innovative global consultancy part of Capgemini Invent, crafting transformative human experiences through creativity, strategy, design, and data for business growth

Design Services 馃嚭馃嚫 San Francisco 2,103 1969
15
BPM LLPbpm.com

Top 35 US public accounting firm in various industries, recognized for fast growth Offers diverse, progressive solutions as certified B Corp

Business Consulting and Services 馃嚭馃嚫 San Francisco 1,864 1986

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16
Wizelinewizeline.ai

A global technology services provider that builds digital products & platforms, modernizes core technologies, enhances data-driven capabilities, & improves user experience

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 1,800 2014
17
IDEOideo.com

This company helps individuals and organizations design innovative products and services to create a more sustainable and equitable future

Design Services 馃嚭馃嚫 San Francisco 1,443 n/a
18
Self-employedquesben.com

Freelance communications & strategy consultant specializing in promoting alternative living solutions like sustainability, minimalism, and modern nomadism for purpose-driven leaders and entrepreneurs

Advertising Services 馃嚭馃嚫 San Francisco 1,392 2018
19
Cornerstone Researchcornerstone.com

Provides economic and financial analysis for litigation, utilizing academic experts and innovative research methods to solve complex legal and business problems.

Business Consulting and Services 馃嚭馃嚫 San Francisco 1,359 1989
20
IA Interior Architectsinteriorarchitects.com

An innovative global architecture firm specializing in interior design, providing strategic planning, architecture, and design services for corporations and institutions worldwide

Design Services 馃嚭馃嚫 San Francisco 1,321 1984
21
WestEdwested.org

A national nonprofit agency promoting equity and excellence in education through research, development, and services, offering professional growth and benefits

Research Services 馃嚭馃嚫 San Francisco 1,237 1966
22
Facebook Ads Expertdroidowl.com

This company provides expert Facebook and Instagram ad strategies for various industries, offering services such as optimization, campaign launches, and consultation

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 1,173 2013
23
informalinformal.cc

Platform connecting top freelancers with businesses to help build, brand, and grow physical product businesses of all sizes

Business Consulting and Services 馃嚭馃嚫 San Francisco 1,162 2019
24
Robosoft Technologiesrobosoftin.com

Robosoft Technologies is a leading digital transformation partner, specializing in digital product strategy, design, development, testing, cybersecurity, and data science for various industries globally

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 1,085 1996
25
Standish Management, LLCstandishmanagement.com

Specialized fund administration services for private equity funds, offering consulting and technology solutions to accelerate fund launches and scale operations efficiently

Venture Capital and Private Equity Principals 馃嚭馃嚫 San Francisco 927 2007
26
Novogradacnovoco.com

Accounting and consulting services specializing in real estate, affordable housing, community development, renewable energy, and valuation for national clients.

Accounting 馃嚭馃嚫 San Francisco 829 1989
27
Newfrontnewfront.com

modern insurance brokerage with industry-leading expertise, transformative technology and client-centric, scalable solutions, helping clients mitigate risk, elevate employee experience, and forge profitable growth.

Insurance 馃嚭馃嚫 San Francisco 800 2017
28
Springboxprophet.com

Prophet is a consulting firm that helps leaders achieve purposeful, transformative, and sustainable growth through strategic solutions and creative capabilities

Professional Services 馃嚭馃嚫 San Francisco 790 1992
29
BSRbsr.org

A sustainable business network and consultancy providing insight, advice, and collaborative initiatives for member companies to create long-term value

Business Consulting and Services 馃嚭馃嚫 San Francisco 783 1992
30
GCAhl.com

A global investment bank providing M&A, capital markets, and private funds advisory services to growth companies worldwide in various sectors

Investment Banking 馃嚭馃嚫 San Francisco 761 n/a

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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