The companies listed here are primarily large and mid-sized firms specializing in facility management and outsourcing services in Rio de Janeiro. They cover a broad range of activities including engineering, maintenance, security, and cleaning. Notable companies include Nova Rio, which offers comprehensive outsourcing services, and Araujo Abreu Engenharia, specializing in engineering installation and maintenance.
Many of these companies, such as CNS Nacional de Serviços and ÁLAMO ENGENHARIA SA, have been established for several decades, indicating a mature market. The data shows a strong concentration of headquarters in Rio de Janeiro, with several firms like Personal Service and Best Vigilancia E Seguranca providing services across Brazil.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Nova Rionovario.com.br
A leading provider of comprehensive outsourcing services, with 30 years of experience, focusing on quality, environmental sustainability, cost reduction, and process optimization |
3,823 | |||
| 2 |
Araujo Abreu Engenhariaaraujoabreu.com.br
A leading company in Engineering Installation Services, specializing in Maintenance, Automation, and Building Services Committed to quality and customer satisfaction |
2,967 | |||
| 3 |
CNS Nacional de Serviçoscns.com.br
A leading Brazilian facilities company with over 85 years of experience, offering a complete portfolio of services including cleaning, maintenance, support, and more |
1,826 | |||
| 4 |
ÁLAMO ENGENHARIA SAalamoengenharia.com.br
A leading maintenance engineering company in Brazil with 1,500 employees providing complete facility maintenance solutions nationwide for over 40 years |
1,554 | |||
| 5 |
Personal Servicepersonalservice.com.br
A leading provider of services in Brazil, offering Facilities, Business Process Outsourcing, Human Resources solutions, and Technical Services to various sectors |
1,077 | |||
| 6 | 
Best Vigilancia E Segurancagrupobest.com.br
A security and investigations business located in Rio De Janeiro, Brazil, specializing in vigilance and protection services |
962 | |||
| 7 |
Grupo Sunsetgruposunset.com.br
With 25 years of experience in the private security sector, the company provides a wide range of security services in Rio de Janeiro and São Paulo |
940 | |||
| 8 |
Gaia Service Techgaiaservicetech.com.br
A provider of outsourcing services with over 2,000 professionals, offering a wide range of services including cleaning, maintenance, security, and administrative support for businesses |
895 | |||
| 9 |
Kleskles.com.br
A company with over 50 years of experience focusing on people, providing quality services through training programs and a commitment to trust and respect |
693 | |||
| 10 |
Grupo Ensegenseg.com.br
The company operates in fire systems, workplace safety, pre-hospital care, construction, and shrimp cultivation, ensuring safety and quality in industrial, commercial, and agricultural sectors |
680 | |||
| 11 |
Masan Serviços Especializadosagilecorp.com.br
Established in 1995, we provide specialized services nationwide with a focus on innovation, environment preservation, and community development through social responsibility initiatives |
617 | |||
| 12 |
TEKNO SISTEMAS DE ENGENHARIA LTDA.teknoengenharia.com.br
Engineering firm providing preventive and occasional maintenance services across various sectors throughout Brazil |
511 | |||
| 13 |
Grupo Solidezgruposolidez.com.br
By combining human and material resources with technology, the Group stands out for its personalized and differentiated approach in meeting client needs |
442 | |||
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. | |||||
| 14 |
PD7 Techpd7tech.com
A Brazilian company founded in 2008, specializing in implementing innovative technology solutions for various industries, with a focus on IoT, AI, and machine learning |
422 | |||
| 15 |
Onet SM21sm21.com.br
Provider of innovative and intelligent solutions in engineering, maintenance, fire prevention, and consulting services, backed by a multinational corporation with vast expertise and resources |
419 | |||
| 16 |
Kiargos Serviços e Facility Ltdakiargos.com
Established in 1984, this organization provides personalized outsourcing and facility services, focusing on integrated, secure, and cost-effective solutions for clients' peace of mind |
383 | |||
| 17 |
Grupo Seletogruposeleto.com
Specialized company providing outsourced qualified manpower in security, cleaning, concierge, and reception services for residential, commercial, and corporate clients |
364 | |||
| 18 |
Grupo Conquistaconquistagrupo.com.br
We are the digital transformation of asset security, offering tailored security processes and plans for enhanced safety, reliability, and protection |
362 | |||
| 19 |
Kantro Multiserviçoskantro.com.br
Specialized in outsourcing services, operating for over 25 years in facility management, offering a wide range of services such as cleaning, fleet outsourcing, and pest control |
344 | |||
| 20 |
Segil - Vigilancia E Seguranca Eireligruposegil.com.br
Established in 1990, the company started in the security business and expanded to meet market demands with quality and excellence |
323 | |||
| 21 |
Vitória Servicosvitoriaservicos.com.br
With over 38 years of experience, this organization offers outsourcing services, product supplies, and equipment for a variety of industries across multiple states in Brazil |
318 | |||
| 22 |
Grupo Proseggrupoproseg.com
Provider of security services including asset protection, event security, private security, electronic security, escort services, and multi-service staffing for various sectors |
284 | |||
| 23 |
Servlog Brasilservlogbrasil.com.br
With over 20 years of experience, this company specializes in technical services, logistics, transportation, and Facilities, striving to provide excellent service to their clients |
213 | |||
| 24 |
Smart Hospital
Humanizing hospital care through technology to create excellent service Managing administrative operations for Souza Aguiar Hospital in Rio de Janeiro under a PPP |
187 | |||
| 25 |
LOGMANS Logística Manutenção e Serviços Especializados Ltdalogmans.com.br
Facilities company specializing in outsourcing services, systemic integral coaching, and corporate security planning and consulting services |
183 | |||
| 26 |
CAEL Serviços - Terceirização de Mão de Obracaelnet.com.br
Specializing in construction, architecture, and outsourcing services with a focus on customer service Utilizes modern management methodologies to maximize results |
182 | |||
| 27 |
Supply Brasilsupplybr.com.br
The company specializes in facility management and outsourcing services, utilizing advanced technology for cleaning, maintenance, and customer-focused solutions to enhance productivity and efficiency |
133 | |||
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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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