# The 30 largest professional services firms in Buenos Aires
Tamtam tracks 40 professional services firms headquartered in Buenos Aires. This list ranks the 30 largest by number of employees on LinkedIn, led by JOB, Escriban铆a AC and Grupo Gesti贸n. Their median headcount is 598. Half of them were founded in 1994 or later.
These professional services firms in Buenos Aires include large established groups and mid-sized companies, with a strong presence in accounting, IT, and legal services. JOB, a communication and services agency, is the largest on this list. Other prominent firms include KPMG Argentina, specializing in audit and advisory, Grupo Gesti贸n, focused on comprehensive HR services, and Escriban铆a AC, which provides nationwide legal services. Deloitte Argentina also offers a wide range of consulting and advisory services.
The data shows a concentration of companies founded in the mid-1990s and early 2000s, suggesting a period of growth and establishment for professional services in the city. The firms listed primarily have their headquarters in Buenos Aires, serving both local and international clients.
馃嚘馃嚪 Buenos Aires 路 30 companies 路 Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [JOB](https://www.tamtam.ai/c/job) (somosjob.ar)
A communication and services agency providing creative solutions to consumer goods marketing teams Expert team with offices in Argentina and Uruguay | Advertising Services | 馃嚘馃嚪 Buenos Aires | 15,492 | 1977 |
| 2 | [Escriban铆a AC](https://www.tamtam.ai/c/escribania-ac) (escribania-ac.com.ar)
A team of specialists providing nationwide legal services through a network of notaries, lawyers, and administrative staff, offering comprehensive advice to clients | Legal Services | 馃嚘馃嚪 Buenos Aires | 2,451 | 1996 |
| 3 | [Grupo Gesti贸n](https://www.tamtam.ai/c/grupo-gestion) (grupo-gestion.com.ar)
Provides comprehensive human resources services including temporary staff, recruitment, consulting, logistics, and agribusiness support to companies across the country. | Human Resources Services | 馃嚘馃嚪 Buenos Aires | 2,383 | 1997 |
| 4 | [KPMG Argentina](https://www.tamtam.ai/c/kpmg-argentina) (kpmg.com.ar)
A professional services firm specializing in Audit, Tax, Legal, and Advisory, helping clients overcome complexity and challenges in Argentina and worldwide | Accounting | 馃嚘馃嚪 Buenos Aires | 1,586 | 1987 |
| 5 | [Estudio Contable GP](https://www.tamtam.ai/c/estudio-contable-gp) (estudiocontablegp.com.ar)
Comprehensive tax and accounting firm providing services to various entities, including sole proprietors, corporations, non-profits, foundations, trusts, and construction companies | Accounting | 馃嚘馃嚪 Buenos Aires | 1,307 | 2014 |
| 6 | [Estudio Contable OYSS](https://www.tamtam.ai/c/estudio-contable-oyss) (econtable.com.ar)
Specialized in providing comprehensive assistance to small and medium-sized entrepreneurs through a multidisciplinary network of professionals in accounting, taxation, legal, audit, finance, and HR | Accounting | 馃嚘馃嚪 Buenos Aires | 1,243 | |
| 7 | [Deloitte Argentina](https://www.tamtam.ai/c/deloitte-argentina) (deloitte.com)
A leading international consultancy with offices in Argentina, offering services in audit, consulting, financial advisory, risk advisory, tax, and legal to local and multinational companies | Management Consulting | 馃嚘馃嚪 Buenos Aires | 1,016 | |
| 8 | [IT Patagonia](https://www.tamtam.ai/c/it-patagonia) (itpatagonia.com)
We are a B-certified technology company focused on sustainable development through technology and education, providing strategic and scalable solutions for organizations 馃殌馃寧馃捇馃摎馃槑馃 | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 967 | 2001 |
| 9 | [BDO Argentina](https://www.tamtam.ai/c/bdo-argentina) (bdoargentina.com)
Provide audit, tax, outsourcing, payroll, and consulting services through a global network with extensive professional expertise and presence. | Accounting | 馃嚘馃嚪 Buenos Aires | 778 | 1974 |
| 10 | [ICS](https://www.tamtam.ai/c/ics-buenos-aires) (icsred.com)
This company offers technological solutions for telecommunications providers in multiple countries, with a focus on innovation, passion, and commitment to continuous improvement | Telecommunications | 馃嚘馃嚪 Buenos Aires | 701 | 1995 |
| 11 | [IRAM - Instituto Argentino de Normalizaci贸n y Certificaci贸n](https://www.tamtam.ai/c/iram-instituto-argentino-de-normalizacion-y-certificacion) (iram.org.ar)
An Argentinean non-profit organization representing ISO, specializing in technical standards development, certification services, training, and providing access to valuable documents | Professional Services | 馃嚘馃嚪 Buenos Aires | 689 | 1935 |
| 12 | [Contract Workplaces](https://www.tamtam.ai/c/contract-workplaces) (contractworkplaces.com)
A regional leader since 1996 in designing and constructing high-performance workspaces tailored to each organization's culture and needs across multiple countries | Architecture and Planning | 馃嚘馃嚪 Buenos Aires | 622 | 1996 |
| 13 | [ITR](https://www.tamtam.ai/c/itr) (itrsa.com.ar)
An expert technology company empowering clients to become modern, digital organizations, guiding them towards successful business transformation with agility and vision | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 622 | 1989 |
| 14 | [Crowe \| Ar](https://www.tamtam.ai/c/crowe-ar) (crowe.com)
A leading firm in Argentina, offering audit, tax, and consulting services with a focus on creating lasting value for clients worldwide | Accounting | 馃嚘馃嚪 Buenos Aires | 601 | 1940 |
| 15 | [Lisicki Litvin & Asociados](https://www.tamtam.ai/c/lisicki-litvin-and-asociados) (llyasoc.com)
A specialized firm with over 27 years of experience in taxes, auditing, consulting, legal matters, and financial services, providing excellence and personalized service internationally | Accounting | 馃嚘馃嚪 Buenos Aires | 598 | 1989 |
| 16 | [GlobalLogic Latinoam茅rica](https://www.tamtam.ai/c/globallogic-latinoamerica) (globallogic.com)
A digital engineering leader in Latin America, helping brands create innovative digital products and experiences through experience design, complex engineering, and data expertise | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 548 | |
| 17 | [CFOTech IT Global Services](https://www.tamtam.ai/c/cfotech-it-global-services) (cfotechlatam.com)
Leading IT services company specializing in software development, testing, mobile apps, consultancy, outsourcing, and networking for client satisfaction and value-added solutions | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 510 | 2015 |
| 18 | [Logicalis Latam](https://www.tamtam.ai/c/logicalis-latam) (la.logicalis.com)
An IT solutions provider offering high-value technology services to industries worldwide, specializing in digital transformation through customized solutions in security, cloud, data management, and IoT | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 484 | |
| 19 | [Interlog](https://www.tamtam.ai/c/interlog) (interlog.com.ar)
An international trade studio with over thirty years of experience, offering comprehensive services supported by highly trained personnel and advanced IT infrastructure | Import & Export | 馃嚘馃嚪 Buenos Aires | 410 | 1993 |
| 20 | [Pullmen RRHH](https://www.tamtam.ai/c/pullmen-rrhh) (pullmen.com)
An esteemed consultancy specializing in talent management offering temporary staffing, outsourcing, direct hiring, training, and logistics services Passionate and committed | Human Resources Services | 馃嚘馃嚪 Buenos Aires | 407 | 1970 |
| 21 | [Estudio jur铆dico Rossi & Asoc](https://www.tamtam.ai/c/estudio-juridico-rossi-and-asoc) (drossi.com.ar)
Specialized legal firm handling work accidents, traffic incidents, dismissals, successions, and pension law cases | Law Practice | 馃嚘馃嚪 Buenos Aires | 388 | 2005 |
| 22 | [Servicios y Consultor铆a](https://www.tamtam.ai/c/servicios-y-consultoria) (serviciosyconsultoria.com)
A national group assisting states in tax administration, with a focus on tailored service, results, transparency, and sustainability | Fundraising | 馃嚘馃嚪 Buenos Aires | 371 | 1994 |
| 23 | [Hytech](https://www.tamtam.ai/c/hytech) (hytech.com.ar)
A multinational engineering company specializing in Gas & Oil market for over 30 years They offer Conceptual, Basic, Detail Engineering and internal equipment for process plants | Oil and Gas | 馃嚘馃嚪 Buenos Aires | 357 | 1990 |
| 24 | [Grant Thornton Argentina](https://www.tamtam.ai/c/grant-thornton-argentina) (grantthornton.com.ar)
A member of Grant Thornton International providing independent audit, tax, and advisory services to private sector companies and public interest entities worldwide | Accounting | 馃嚘馃嚪 Buenos Aires | 355 | |
| 25 | [Go Global](https://www.tamtam.ai/c/go-global-buenos-aires) (goglobal-consulting.com)
A multinational company specializing in language services for global corporate communications, offering translation, localization, and content creation solutions with ISO-certified quality standards | Translation and Localization | 馃嚘馃嚪 Buenos Aires | 329 | 2008 |
| 26 | [C&S Inform谩tica](https://www.tamtam.ai/c/c-and-s-informatica) (cys.com.ar)
Technology company providing software engineering, training, and IT consulting solutions Specializing in custom software development for renowned organizations with a focus on honesty, transparency, and innovation | IT Services and IT Consulting | 馃嚘馃嚪 Buenos Aires | 326 | 1985 |
| 27 | [CIE - CENTRO DE INTEGRACI脫N ESCOLAR](https://www.tamtam.ai/c/cie-centro-de-integracion-escolar) (cieintegracionescolar.com)
A team of education professionals specializing in supporting children's integration in various school environments through personalized strategies crafted based on individual needs | Primary and Secondary Education | 馃嚘馃嚪 Buenos Aires | 320 | 2005 |
| 28 | [Lenor Group](https://www.tamtam.ai/c/lenor-group) (lenorgroup.com)
Lenor is a Conformity Assessment Body offering Certification, Inspection, Industrial Services, Testing, and Calibration, ensuring product and facility quality worldwide since 1999 | Security and Investigations | 馃嚘馃嚪 Buenos Aires | 314 | |
| 29 | [Estudio Contable VZ](https://www.tamtam.ai/c/estudio-contable-vz) (estudiocontablevz.com.ar)
Get expert advice from VZ Accounting Studio, offering solutions in auditing, administrative, accounting, tax, and legal consultancy services with a team of specialists | Accounting | 馃嚘馃嚪 Buenos Aires | 278 | |
| 30 | [Estudio Juridico CRG](https://www.tamtam.ai/c/estudio-juridico-crg)
A legal firm with professionals dedicated to all branches of law, resolving conflicts, providing comprehensive legal advice, and fighting for neglected rights | Law Practice | 馃嚘馃嚪 Buenos Aires | 249 | 2011 |
## 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.
## More company lists in Buenos Aires
- [The largest companies in Buenos Aires](https://www.tamtam.ai/l/largest-companies-buenos-aires) (908)
- [Multinational companies in Buenos Aires](https://www.tamtam.ai/l/multinational-companies-buenos-aires) (150)
- [Critical infrastructure operators in Buenos Aires](https://www.tamtam.ai/l/critical-infrastructure-operators-buenos-aires) (103)
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- [Financial services firms in Buenos Aires](https://www.tamtam.ai/l/financial-services-firms-buenos-aires) (70)
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- [IT Services and IT Consulting companies in Buenos Aires](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-buenos-aires) (64)
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- [Financial Services companies in Buenos Aires](https://www.tamtam.ai/l/financial-services-companies-buenos-aires) (58)
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- [Public sector organisations in Buenos Aires](https://www.tamtam.ai/l/public-sector-organisations-buenos-aires) (52)
- [Manufacturers in Buenos Aires](https://www.tamtam.ai/l/manufacturers-buenos-aires) (50)
- [Higher Education companies in Buenos Aires](https://www.tamtam.ai/l/higher-education-companies-buenos-aires) (43)
- [Hospitals and Health Care companies in Buenos Aires](https://www.tamtam.ai/l/hospitals-and-health-care-companies-buenos-aires) (41)
- [IT services companies in Buenos Aires](https://www.tamtam.ai/l/it-services-companies-buenos-aires) (40)
- [Corporate groups and holding companies in Buenos Aires](https://www.tamtam.ai/l/holding-companies-buenos-aires) (36)
- [Government Administration companies in Buenos Aires](https://www.tamtam.ai/l/government-administration-companies-buenos-aires) (33)
- [Energy companies in Buenos Aires](https://www.tamtam.ai/l/energy-companies-buenos-aires) (32)
- [Consulting firms in Buenos Aires](https://www.tamtam.ai/l/consulting-firms-buenos-aires) (29)
- [Hotel and hospitality groups in Buenos Aires](https://www.tamtam.ai/l/hospitality-groups-buenos-aires) (29)
- [Food and Beverage Services companies in Buenos Aires](https://www.tamtam.ai/l/food-and-beverage-services-companies-buenos-aires) (27)
- [Franchise networks in Buenos Aires](https://www.tamtam.ai/l/franchise-networks-buenos-aires) (25)
- [Retail Apparel and Fashion companies in Buenos Aires](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-buenos-aires) (25)
## The same list elsewhere in Argentina
- [Professional services firms in Argentina](https://www.tamtam.ai/l/professional-services-firms-argentina) (79)
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Source: https://www.tamtam.ai/l/professional-services-firms-buenos-aires