# The 50 largest professional services firms in Vaud
Tamtam tracks 68 professional services firms headquartered in Vaud. This list ranks the 50 largest by number of employees on LinkedIn, led by Bechtle Schweiz AG, Social Group - socialgroup.ch and ELCA Group. Their median headcount is 128. Half of them were founded in 2003 or later. The most common headquarters are Lausanne (17), Zurich (4) and Renens (3).
The professional services firms in Vaud are predominantly mid-sized to large companies, with a strong presence in IT services and human resources. Bechtle Schweiz AG, with 12,000 employees, is a leading IT service provider for various clients, while ELCA Group specializes in cybersecurity and data solutions. Interiman Group and OK JOB SA focus on temporary staffing and recruitment.
A notable pattern is the concentration of IT services and IT consulting firms, alongside human resources services. Companies like Protectas offer security services, and ZEDRA provides wealth management and corporate services. This indicates a diverse professional services landscape, with a significant emphasis on technology and talent management.
π¨π Vaud Β· 50 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Bechtle Schweiz AG](https://www.tamtam.ai/c/bechtle-schweiz-ag) (bechtle.com)
Leading IT service provider for SMEs, large customers, and public institutions, offering consulting, infrastructure, cloud, services, and software solutions throughout the entire IT life cycle. | IT Services and IT Consulting | π¨π MΓ€genwil | 12,000 | 1983 |
| 2 | [Social Group - socialgroup.ch](https://www.tamtam.ai/c/social-group-socialgroup-ch) (socialgroup.ch)
Optimizing digital business ecosystems, enhancing LinkedIn presence for sustainable growth, measurable success, and maximum efficiency in sales and recruiting. | Business Consulting and Services | π¨π Wallisellen | 10,803 | 2012 |
| 3 | [ELCA Group](https://www.tamtam.ai/c/elca-group) (elca.ch)
Leading Swiss provider of IT services and solutions, specializing in cybersecurity, data & AI, cloud, software development, and digital experience across industries | IT Services and IT Consulting | π¨π Pully | 2,026 | 1968 |
| 4 | [Protectas](https://www.tamtam.ai/c/protectas) (protectas.com)
Leader in security services offering specialized guarding, technology solutions, consulting, and investigations tailored to individual customer needs for effective security solutions worldwide | Security and Investigations | π¨π Lausanne | 1,815 | 1976 |
| 5 | [ZEDRA](https://www.tamtam.ai/c/zedra-group) (zedra.com)
International provider of tailored advice in wealth management, corporate services, global expansion, pensions, incentives, and fund solutions for businesses, families, individuals, and asset managers | Financial Services | π¨π St. Helier | 834 | 2016 |
| 6 | [Interiman Group](https://www.tamtam.ai/c/interiman-group) (interiman-group.ch)
Providing temporary staffing services to thousands of companies and public authorities in Switzerland, focusing on human relations and efficiency. | Human Resources Services | π¨π Renens | 815 | 1998 |
| 7 | [UNICC](https://www.tamtam.ai/c/unicc) (unicc.org)
Designs and deploys transformational digital tools and programs, including cybersecurity, data analytics, platform, software, and infrastructure solutions for the UN family and other international organizations. | IT Services and IT Consulting | π¨π Geneva | 581 | 1971 |
| 8 | [WSP in Switzerland](https://www.tamtam.ai/c/wsp-in-switzerland) (wsp.com)
A company specializing in prestigious projects in transportation, energy, and sustainable development, committed to decarbonizing construction and driving digital transformation Join us! | Civil Engineering | π¨π Lausanne | 498 | 1954 |
| 9 | [Pemsa](https://www.tamtam.ai/c/pemsa) (pemsa.ch)
Recruitment and placement of skilled staff in construction, specializing in electricity and structural work across Switzerland with local agency support. | Staffing and Recruiting | π¨π Lutry | 433 | 1980 |
| 10 | [D-ploy GmbH](https://www.tamtam.ai/c/d-ploy-gmbh) (d-ploy.ch)
Provides IT engineering, consulting services, and solutions for global and regional companies, focusing on operational IT infrastructure and management expertise, enabling business value. | IT Services and IT Consulting | π¨π Kaiseraugst | 422 | 2003 |
| 11 | [Kudelski Security](https://www.tamtam.ai/c/kudelski-security) (kudelskisecurity.com)
Providing cybersecurity consulting, technology, managed security services, and custom innovation to reduce risk and enhance security effectiveness. | IT Services and IT Consulting | π¨π Cheseaux | 384 | 2012 |
| 12 | [OK JOB SA](https://www.tamtam.ai/c/ok-job-sa) (okjob.ch)
Specialists in permanent and temporary recruitment across Switzerland, with certified ISO quality standards Dedicated team providing HR services in all regions | Human Resources Services | π¨π Lausanne | 361 | 2012 |
| 13 | [IFCHOR GALBRAITHS](https://www.tamtam.ai/c/ifchor-galbraiths) (ifchorgalbraiths.com)
A leading global shipbroking company offering competitive chartering and sale and purchase services, specialized in Dry bulk, Tanker, and Offshore markets | Maritime Transportation | π¨π Lausanne | 354 | |
| 14 | [IOTA GROUP](https://www.tamtam.ai/c/iota-group) (iota-group.com)
Global workforce deployment and local integration services, ensuring compliance, risk mitigation, and seamless project execution across 120+ countries. | Oil and Gas | π¨π Mies | 336 | 1982 |
| 15 | [WΓΌest Partner](https://www.tamtam.ai/c/wuest-partner) (wuestpartner.com)
Independent service provider in real estate, offering expertise, data, and digital solutions for decision-making, new perspectives, and sustainable value creation. | Real Estate | π¨π Zurich | 336 | 1985 |
| 16 | [CCHE](https://www.tamtam.ai/c/cche) (cche.com)
Swiss architecture firm offering landscape architecture, urban planning, interior design, and innovative project management with sustainable, economic, and social focus. | Architecture and Planning | π¨π Lausanne | 315 | |
| 17 | [Gruner Stucky Ltd](https://www.tamtam.ai/c/gruner-stucky-ltd) (gruner.ch)
A world leader in dam and hydropower design, providing services for construction, rehabilitation, dam safety studies, energy transmission, and pumped storage | Engineering Services | π¨π Renens | 312 | 1926 |
| 18 | [Quantis](https://www.tamtam.ai/c/quantis) (quantis.com)
Partnering with consumer goods and financial sectors to enable sustainable transformation aligned with planetary boundaries and future-proof business models. | Environmental Services | π¨π Lausanne | 300 | 2006 |
| 19 | [SQS - Swiss Association for Quality and Management Systems](https://www.tamtam.ai/c/sqs-swiss-association-for-quality-and-management-systems) (sqs.ch)
Leading Swiss certification organization offering assessment, certification, and training services for management systems worldwide, ensuring high quality and sustainable success for clients | Business Consulting and Services | π¨π Zollikofen | 289 | 1983 |
| 20 | [EcoSecurities](https://www.tamtam.ai/c/ecosecurities) (ecosecurities.com)
Develops nature-based solutions, carbon dioxide removals, and energy transition projects, deploying over $1 billion in climate finance and generating 400 million carbon credits. | Environmental Services | π¨π Geneva | 281 | 1997 |
| 21 | [itecor](https://www.tamtam.ai/c/itecor) (itecor.com)
An international IT consultancy specializing in digital transformation, offering services in Governance, Digital Solutions, Quality Assurance Focused on innovation and empowering clients | IT Services and IT Consulting | π¨π Headquarters Vevey | 216 | 1992 |
| 22 | [Redsen](https://www.tamtam.ai/c/redsen) (redsen.com)
A European consulting firm based in Paris, Geneva, and Brussels, specializing in strategic support for various departments and Information System transformation projects across different sectors | IT Services and IT Consulting | π¨π Morges | 199 | 2010 |
| 23 | [OWT - a Swisscom company](https://www.tamtam.ai/c/owt-a-swisscom-company) (owt.swiss)
Strategy, technology consulting firm, helps Swiss companies, organizations compete globally, support local business, improve citizens' lives with seasoned industry experts, technology specialists, creative innovators. | IT Services and IT Consulting | π¨π Lausanne | 182 | 2009 |
| 24 | [APO Group](https://www.tamtam.ai/c/apo-group) (apo-opa.com)
APO Group offers turnkey solutions to help companies grow in Africa through communication, technology services, and strategic consulting, empowering African excellence and economic development | Public Relations and Communications Services | π¨π Lausanne | 171 | 2007 |
| 25 | [deRham](https://www.tamtam.ai/c/derham) (derham.ch)
deRham is a leading property management company specialized in various real estate activities such as residential and commercial leasing with a focus on client commitment | Real Estate | π¨π Lausanne | 128 | 1899 |
| 26 | [Realtor of Excellence Swiss Family Office](https://www.tamtam.ai/c/realtor-of-excellence-swiss-family-office) (roeswiss.ch)
Assists clients with property strategy globally, originally South Africa, now primarily Switzerland and Europe, family-founded business. | Real Estate | π¨π UnterΓ€geri | 92 | 1977 |
| 27 | [Solenix](https://www.tamtam.ai/c/solenix) (solenix.ch)
Provides engineering and consulting services for the space market. Its software team delivers smart, reliable solutions for clients. | Aviation and Aerospace Component Manufacturing | π¨π Kappel | 70 | 2004 |
| 28 | [Adimmo](https://www.tamtam.ai/c/adimmo) (adimmo.ch)
Provides comprehensive real estate services with highly qualified professionals, offering tailored support in areas from architecture to property management to meet client-specific needs. | Real Estate | π¨π Basel | 67 | 2000 |
| 29 | [neo technologies SA](https://www.tamtam.ai/c/neo-technologies-sa) (dina.ch)
Consulting and implementation of SAP ERP solutions, technical and application maintenance, specializing in energy, public sector, industry, distribution, and services. | IT Services and IT Consulting | π¨π Morges | 52 | 2004 |
| 30 | [HEV Verwaltungs AG](https://www.tamtam.ai/c/hev-verwaltungs-ag) (hevsg.ch)
Offers comprehensive real estate services including sales, rentals, management, and appraisals, with over a century of experience and regional presence in Eastern Switzerland. | Real Estate | π¨π St. Gallen | 44 | |
| 31 | [ELSIE SA](https://www.tamtam.ai/c/elsie-sa) (elsiegroup.com)
Provides technical assistance, training, and services for electrical power transmission and distribution during construction, commissioning, and operating phases. | Oil and Gas | π¨π Gland | 42 | 2012 |
| 32 | [Publiaz immobilier SA](https://www.tamtam.ai/c/publiaz-immobilier-sa) (publiaz.ch)
An independent real estate company in Vaud, Switzerland, providing a range of property services and managing over 12,000 properties across the region | Real Estate | π¨π Renens | 40 | 1961 |
| 33 | [Starling Hotels & Resorts](https://www.tamtam.ai/c/starling-hotels-and-resorts) (starlinghotels.com)
Swiss consultancy firm specializing in Sales, Marketing, Digital, and Revenue management for independent hotels to enhance visibility, profitability, and market reach | Hospitality | π¨π Lausanne | 37 | |
| 34 | [GXP CONSULTING Switzerland](https://www.tamtam.ai/c/gxp-consulting-switzerland) (gxp-cs.com)
This company offers expertise and support in Quality Assurance, Qualification/Validation, Regulatory Affairs, Operational Excellence, Engineering, Manufacturing, Maintenance, and Project Management for product life cycles. | Pharmaceutical Manufacturing | π¨π Lausanne | 35 | 2014 |
| 35 | [BSF Swissphoto](https://www.tamtam.ai/c/bsf-swissphoto) (bsf-swissphoto.com)
geodata industry, 3D mapping, and consulting services using modern aircraft and infrastructure, with a commitment to excellence and innovation. | Surveying and Mapping Services | π¨π Zurich | 33 | 1931 |
| 36 | [Principia Advisory](https://www.tamtam.ai/c/principia-advisory) (principia-advisory.com)
A leading advisory firm specializing in organizational ethics, helping global organizations build ethical commitments, shape culture, and drive strategic ambition | Business Consulting and Services | π¨π Trelex | 32 | 2014 |
| 37 | [Colin&Cie. Wealth Management](https://www.tamtam.ai/c/colin-and-cie-wealth-management) (colin-cie.com)
Manages over CHF 2 billion for high net worth individuals and institutional investors, focusing on trust and personal values in wealth management. | Investment Management | π¨π Zug | 31 | 2009 |
| 38 | [Bobst Régie Immobilière SA](https://www.tamtam.ai/c/bobst-regie-immobiliere-sa) (bobst-immobilier.ch)
Founded in 1991, this real estate company manages properties, brokers deals, and administers PPE primarily in the North Vaud region with a growing clientele | Real Estate | π¨π Yverdon-Les-Bains | 27 | 1991 |
| 39 | [GΓ©rance Robert Crot & Cie SA](https://www.tamtam.ai/c/gerance-robert-crot-and-cie-sa) (gerance-crot.ch)
Experts in property management and condominium administration in the Vaud region Experience personalized service with a human touch | Real Estate | π¨π Lausanne | 26 | 1985 |
| 40 | [Cougar Group](https://www.tamtam.ai/c/cougar-group) (cougargroup.ch)
Agile team of real estate and construction experts dedicated to steering projects towards success through diverse knowledge and skills | Real Estate | π¨π Morges | 25 | 2012 |
| 41 | [Artifact](https://www.tamtam.ai/c/artifact) (artifact.swiss)
A team of experienced founders leverages AI and data science to help companies adapt to digital disruptions, driving value through actionable insight | IT Services and IT Consulting | π¨π Lausanne | 24 | |
| 42 | [Naef & Partner](https://www.tamtam.ai/c/naef-and-amp-partner) (naefpartner.com)
Supports family offices, high-net-worth individuals, institutional investors, and public sector clients as a trusted, independent real estate service provider focused on client interests. | Real Estate | π¨π Zurich | 21 | 2018 |
| 43 | [balthasar sΓ rl - l'entreprise au coeur de l'humain](https://www.tamtam.ai/c/balthasar-sarl-l-entreprise-au-coeur-de-l-humain) (balthasar.sarl)
This company focuses on promoting well-being at work, human-to-human relationships, training, coaching, team development, and recruitment services while prioritizing human potential | Professional Training and Coaching | π¨π Morges | 16 | 2007 |
| 44 | [Lamy Expertise SA](https://www.tamtam.ai/c/lamy-expertise-sa) (lamy-expertise.ch)
Specialized in technical, economic, and financial expertise in real estate, industrial, and land matters, with a focus on asbestos issues Serving clients in French-speaking Switzerland | Real Estate | π¨π Lausanne | 16 | 2007 |
| 45 | [Bestag AG](https://www.tamtam.ai/c/bestag-ag) (bestag.ch)
Helps property sellers determine optimal prices, find suitable agents, and establish effective agency contracts for Swiss real-estate brokerage, enabling higher sale prices. | Real Estate | π¨π Zurich | 14 | 2017 |
| 46 | [Ventura Associates](https://www.tamtam.ai/c/ventura-associates) (ventura-associate.com)
Expert consulting for complex defense and security systems, leveraging a network of high-level experts for innovative, transversal, and operationally realistic solutions across various sectors. | Business Consulting and Services | π¨π Lausanne | 13 | 2012 |
| 47 | [ReSurg SA](https://www.tamtam.ai/c/resurg-sa) (resurg.com)
Support for surgical research including study design, data analysis, manuscript preparation, publishing, and coaching for young surgeons and clients. | Research Services | π¨π Nyon | 12 | 2017 |
| 48 | [Vonlanthen Consulting SA](https://www.tamtam.ai/c/vonlanthen-consulting-sa) (vonlanthen.net)
A consulting firm specializing in legal advice, actuarial expertise, and management for professional pension funds, advocating for transparent and dynamic systems | Insurance | π¨π Carrouge VD | 12 | 1999 |
| 49 | [Vago - Mattenberger Experts Immobiliers SA](https://www.tamtam.ai/c/vago-mattenberger-experts-immobiliers-sa) (vago-mattenberger.ch)
Vago Experts Immobiliers SA is a leading independent real estate expert company in French-speaking Switzerland, providing personalized real estate services with over 70 years of combined experience | Real Estate | π¨π Lausanne | 10 | 1996 |
| 50 | [TASQ SΓ rl](https://www.tamtam.ai/c/tasq-sarl) (tasq.ch)
Based in Lausanne, TASQ provides tailored services to support clients in real estate, industrial, and infrastructure projects, from strategy development to operations | Real Estate | π¨π Lausanne | 9 | 2016 |
## 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 Vaud
- [The largest companies in Vaud](https://www.tamtam.ai/l/largest-companies-vaud) (1,076)
- [Multinational companies in Vaud](https://www.tamtam.ai/l/multinational-companies-vaud) (261)
- [Real Estate companies in Vaud](https://www.tamtam.ai/l/real-estate-companies-vaud) (221)
- [Companies with in-house R&D in Vaud](https://www.tamtam.ai/l/r-and-d-companies-vaud) (162)
- [Manufacturers in Vaud](https://www.tamtam.ai/l/manufacturers-vaud) (101)
- [Financial services firms in Vaud](https://www.tamtam.ai/l/financial-services-firms-vaud) (98)
- [Property management companies in Vaud](https://www.tamtam.ai/l/property-management-companies-vaud) (95)
- [SaaS companies in Vaud](https://www.tamtam.ai/l/saas-companies-vaud) (85)
- [Retail chains in Vaud](https://www.tamtam.ai/l/retail-chains-vaud) (83)
- [IT Services and IT Consulting companies in Vaud](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-vaud) (83)
- [Hardware manufacturers in Vaud](https://www.tamtam.ai/l/hardware-companies-vaud) (79)
- [Critical infrastructure operators in Vaud](https://www.tamtam.ai/l/critical-infrastructure-operators-vaud) (74)
- [IT services companies in Vaud](https://www.tamtam.ai/l/it-services-companies-vaud) (62)
- [Software Development companies in Vaud](https://www.tamtam.ai/l/software-development-companies-vaud) (61)
- [Consulting firms in Vaud](https://www.tamtam.ai/l/consulting-firms-vaud) (53)
- [Financial Services companies in Vaud](https://www.tamtam.ai/l/financial-services-companies-vaud) (48)
- [Family-owned companies in Vaud](https://www.tamtam.ai/l/family-owned-companies-vaud) (48)
- [Companies with a mobile app in Vaud](https://www.tamtam.ai/l/companies-with-mobile-app-vaud) (42)
- [AI companies in Vaud](https://www.tamtam.ai/l/ai-companies-vaud) (39)
- [Medical Equipment Manufacturing companies in Vaud](https://www.tamtam.ai/l/medical-equipment-manufacturing-companies-vaud) (39)
- [Medical device companies in Vaud](https://www.tamtam.ai/l/medical-device-companies-vaud) (39)
- [Property developers in Vaud](https://www.tamtam.ai/l/property-developers-vaud) (39)
- [Public sector organisations in Vaud](https://www.tamtam.ai/l/public-sector-organisations-vaud) (38)
- [Pharmaceutical companies in Vaud](https://www.tamtam.ai/l/pharmaceutical-companies-vaud) (38)
## The same list elsewhere in Switzerland
- [Professional services firms in Switzerland](https://www.tamtam.ai/l/professional-services-firms-switzerland) (402)
- [Professional services firms in Canton of Zurich](https://www.tamtam.ai/l/professional-services-firms-canton-of-zurich) (128)
- [Professional services firms in Canton of Geneva](https://www.tamtam.ai/l/professional-services-firms-canton-of-geneva) (53)
- [Professional services firms in Canton of Zug](https://www.tamtam.ai/l/professional-services-firms-canton-of-zug) (28)
- [Professional services firms in Zurich](https://www.tamtam.ai/l/professional-services-firms-zurich) (106)
- [Professional services firms in Geneva](https://www.tamtam.ai/l/professional-services-firms-geneva) (44)
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Source: https://www.tamtam.ai/l/professional-services-firms-vaud