The companies in São Paulo listed here are primarily large firms in IT services, consulting, and business process outsourcing. Many specialize in digital transformation, customer relationship management, and technology solutions. For example, Atento Brasil is a global leader in customer relationship management services, Stefanini Group offers a wide range of innovative services including AI, and AlmavivA Experience provides BPO solutions for customer service.
A significant number of these companies are subsidiaries or branches of larger global entities, such as Accenture Brasil, or are large Brazilian corporations like Serasa Experian, focused on data-driven solutions. Neobpo, founded in 2017, and Loft, founded in 2018, both with over 2,000 employees, indicate a trend of relatively young companies achieving substantial scale in the city.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Atento Brasilatento.com
A global leader in customer relationship management services, offering outsourcing solutions to a wide range of industries in multiple countries |
43,729 | |||
| 2 |
Stefanini Groupstefanini.com
A global company offering a wide range of innovative services such as automation, cloud, IoT, UX, AI, consulting, and marketing solutions |
24,358 | |||
| 3 |
AlmavivA Experiencealmavivaexperience.com.br
A leading contact center company in Brazil offering innovative BPO solutions for customer service, sales, collections, and back office, along with Trade Marketing services |
23,587 | |||
| 4 |
Stefanini Brasilstefanini.com
A global IT services provider offering consulting, integration, solution development, BPO, outsourcing, and technology-based business solutions in over 35 countries |
12,265 | |||
| 5 |
Neobponeohype.co
A Brazilian company specializing in Customer Experience and digital product development, with over 10,000 employees across 5 units in Sao Paulo and Rio de Janeiro |
10,231 | |||
| 6 |
Accenture Brasilaccenture.com
A global professional services company specializing in digital, cloud, and security services, serving clients in over 120 countries with 710,000 employees worldwide |
9,943 | |||
| 7 |
Serasa Experianserasaexperian.com.br
Provide data-driven solutions for credit, fraud management, marketing, digital certification, and consumer financial protection to support economic development. |
7,213 | |||
| 8 |
QuintoAndarcarreiras.quintoandar.com.br
Largest Latin America real estate ecosystem offering diverse brands and innovative technologies to enhance and support all housing journey stages. |
5,039 | |||
| 9 |
Vagas.comvagas.com.br
We drive individuals and businesses forward through a connected recruitment process, helping them reach their full potential together with valuable encounters |
3,275 | |||
| 10 |
Stefanini LATAMstefanini.com
Provides integrated digital transformation services including consulting, AI, cybersecurity, banking, manufacturing, and digital marketing across 41 countries. |
2,651 | |||
| 11 |
LEGALoperadora.legal
LEGAL provides technology rental and subscription services in São Paulo, offering solutions such as internet, drones, WiFi infrastructure, IoT, and gadget rentals for businesses and events |
2,576 | |||
| 12 |
Flashflashapp.com.br
A comprehensive platform offering solutions for benefits management, HR, and corporate expenses to streamline processes and increase productivity for businesses |
2,463 | |||
| 13 |
Intervalorintervalor.com.br
With over 25 years in the market and part of the Clash group, the company offers personalized credit and debt collection solutions using technology and specialized teams |
2,305 | |||
| 14 |
CTCctctech.com.br
A leading provider of IT solutions since 1994, offering innovative products and services nationwide with a focus on customer needs and quality |
2,264 | |||
| 15 |
Loftloft.com.br
Innovating real estate in Brazil with technology and data, simplifying buying and selling processes for faster, fairer transactions |
2,144 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
FIDI - Fundação Instituto de Pesquisa e Estudo de Diagnóstico por Imagemfidi.org.br
A nonprofit foundation founded by medical professors specializing in diagnostic imaging, providing medical assistance, teaching, research, and innovative healthcare solutions in Brazil |
2,004 | |||
| 17 |
Stefanini North America and APACstefanini.com
A multinational company offering innovative technological solutions to help clients transform their business through digital innovation and co-creation for a better future |
1,999 | |||
| 18 |
Topaztopazevolution.com
A technology company in the b2b market with a comprehensive financial platform offering solutions for digital transformation, fraud prevention, and secure cooperation |
1,976 | |||
| 19 |
Omieomie.com.br
Innovative business management system provider focused on driving economic prosperity in Brazil Offering cloud-based ERP software, financial services, education, and community connectivity |
1,745 | |||
| 20 |
DDS Telecomunicações Ltdadds.com.br
Specializing in system integration, communication solutions for Contact Centers and Corporations nationwide, focusing on quality services tailored to each client's needs for competitive advantage |
1,596 | |||
| 21 |
T-Systems do Brasilt-systems.com
Global leader in IT & Communications Technology, offering integrated solutions in Digital, SAP, Cloud, Infrastructure, and Security with focus on innovation and customer satisfaction |
1,528 | |||
| 22 |
Semantixsemantix.ai
Provides comprehensive data platforms and analytics solutions, leveraging Artificial Intelligence and Big Data for informed business decisions and growth. |
1,433 | |||
| 23 | 1,238 | ||||
| 24 |
Solutis Tecnologiassolutis.com.br
Provider of services in strategy, design, and technology, specializing in accelerating digital transformation through cognitive, analytics, IOT, UX, cloud, mobile, and support solutions |
1,153 | |||
| 25 |
frete.comfretebras.com.br
Aiming to simplify cargo transportation in Latin America by connecting carriers with truck drivers efficiently and safely through innovative technologies |
1,129 | |||
| 26 |
Brasil Monksmonks.com
A global team offering digital content, data, media, and technology services to a wide range of clients, leading brands into a new digital era |
1,116 | |||
| 27 |
Nuvemshopnuvemshop.com.br
Leading e-commerce platform in Latin America empowering over 120k entrepreneurs, with a team of 900+ across Brazil, Argentina, Colombia, and Mexico |
1,010 | |||
| 28 |
Grupo Aluraalura.com.br
A group of companies believing in the transformative power of education and technology to impact individuals and careers |
997 | |||
| 29 |
Koinkoin.com.br
The company offers Buy Now, Pay Later solutions for online purchases in Brazil, with a focus on financial solutions for B2B and B2C across Latin America |
963 | |||
| 30 |
Mutantmutant.com.br
A constantly evolving force that challenges the status quo, pushes boundaries, and believes in creating positive change through courage and determination |
943 | |||
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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 12, 2026.
More company lists in São Paulo
- The largest companies in São Paulo 3,842
- Multinational companies in São Paulo 472
- Financial Services companies in São Paulo 440
- Retail chains in São Paulo 397
- Financial services firms in São Paulo 381
- Education providers in São Paulo 293
- Manufacturers in São Paulo 279
- Companies with a mobile app in São Paulo 277
- Critical infrastructure operators in São Paulo 251
- IT Services and IT Consulting companies in São Paulo 239
- E-commerce companies in São Paulo 218
- Retail companies in São Paulo 212
- Professional services firms in São Paulo 200
- Healthcare providers in São Paulo 197
- Corporate groups and holding companies in São Paulo 182
- Fintech companies in São Paulo 171
- Companies with in-house R&D in São Paulo 145
- Consulting firms in São Paulo 138
- IT services companies in São Paulo 130
- Hospitals and Health Care companies in São Paulo 116
- Franchise networks in São Paulo 114
- Subscription businesses in São Paulo 110
- Distributors and wholesalers in São Paulo 103
- Publicly traded companies in São Paulo 102