# Professional services firms headquartered in Singapore Tamtam tracks 49 professional services firms headquartered in Singapore. This list ranks all of them by number of employees on LinkedIn, led by Quest Global, Straive and Khatib & Alami. Their median headcount is 618. Half of them were founded in 2001 or later. The most common headquarters are Singapore (44). These 49 professional services firms in Singapore include large global companies and mid-sized firms. Quest Global, with over 21,000 employees, provides engineering solutions. Straive offers data analytics and AI solutions. Khatib & Alami is a multidisciplinary design consultancy. Synergy Marine Group specializes in global ship management. VISTRA provides essential business services like HR, tax, and legal support. KPMG Singapore is part of a global network offering audit, tax, and advisory services. The data shows a clear concentration of headquarters in Singapore for these professional services firms, indicating the city-state's role as a regional hub for various specialized services. πŸ‡ΈπŸ‡¬ Singapore Β· 49 companies Β· Updated Nov 12, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Quest Global](https://www.tamtam.ai/c/quest-global) (questglobal.com)
Provides comprehensive engineering solutions across multiple industries, leveraging global expertise and digital technologies to solve complex challenges. | Engineering Services | πŸ‡ΈπŸ‡¬ Singapore | 21,161 | | | 2 | [Straive](https://www.tamtam.ai/c/straive) (straive.com)
Operationalize data analytics and AI solutions for enterprises, enhancing efficiency, user experience, and revenue across multiple industries globally. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 14,531 | 1980 | | 3 | [Khatib & Alami](https://www.tamtam.ai/c/khatib-and-alami) (khatibalami.com)
A multidisciplinary design consultancy focused on professional excellence, sustainability, and innovation in delivering projects across various regions worldwide | Design Services | πŸ‡ΈπŸ‡¬ Downtown | 7,600 | 1964 | | 4 | [Synergy Marine Group](https://www.tamtam.ai/c/synergy-marine-group) (synergymarinegroup.com)
Global ship management company specializing in LNG, LPG, container ships, tankers, and bulk carriers with focus on crew wellbeing and sustainability. | Maritime Transportation | πŸ‡ΈπŸ‡¬ Singapore | 7,201 | | | 5 | [SJ Group](https://www.tamtam.ai/c/sj-group) (sjgroup.com)
Designing and delivering quality housing, infrastructure, and sustainable urban spaces to create thriving communities and businesses worldwide. | Professional Services | πŸ‡ΈπŸ‡¬ Singapore | 7,158 | 2015 | | 6 | [VISTRA](https://www.tamtam.ai/c/vistra) (vistra.com)
Vistra provides essential business services to help companies and private capital funds grow, offering solutions for HR, tax, legal, compliance, and more globally | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 6,438 | | | 7 | [PERSOL APAC](https://www.tamtam.ai/c/persol-apac) (persolkelly.com)
Leading provider of integrated staffing and HR solutions across Asia-Pacific, combining local expertise with technology to support workforce needs. | Human Resources Services | πŸ‡ΈπŸ‡¬ Singapore | 4,104 | | | 8 | [CBRE Asia Pacific](https://www.tamtam.ai/c/cbre-asia-pacific) (cbre.com)
Providing commercial real estate services across Asia Pacific with extensive local expertise, market coverage, and client business alignment. | Real Estate | πŸ‡ΈπŸ‡¬ Singapore | 3,786 | | | 9 | [KPMG Singapore](https://www.tamtam.ai/c/kpmg-singapore) (kpmg.com.sg)
Global network of independent firms providing audit, tax, and advisory services with legal separation and local responsibility in 142 countries. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 3,310 | | | 10 | [PwC Singapore](https://www.tamtam.ai/c/pwc-singapore) (pwc.com)
Building trust in society, solving important problems, delivering quality assurance, advisory, and tax services across 152 countries with nearly 328,000 people. | Accounting | πŸ‡ΈπŸ‡¬ Singapore | 2,595 | | | 11 | [Akin Gump Strauss Hauer & Feld LLP](https://www.tamtam.ai/c/akin-gump-strauss-hauer-and-feld-llp) (akingump.com)
Global law firm with 900+ lawyers offering market-leading practices in complex transactions, litigation, and public policy Committed to diversity, innovation, and client success | Law Practice | πŸ‡ΈπŸ‡¬ | 2,587 | 1945 | | 12 | [Meinhardt Group](https://www.tamtam.ai/c/meinhardt-group) (meinhardtgroup.com)
Asian-based engineering company with global reach, providing innovative and sustainable solutions for complex projects in various industries worldwide | Civil Engineering | πŸ‡ΈπŸ‡¬ Singapore | 2,540 | 1955 | | 13 | [NTT DATA Asia Pacific](https://www.tamtam.ai/c/ntt-data-asia-pacific) (nttdata.com)
Global business and technology leader providing AI, digital infrastructure, cloud, security, and consulting services to help organizations transition sustainably into digital futures. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 1,866 | | | 14 | [Keppel Ltd.](https://www.tamtam.ai/c/keppel-ltd) (keppel.com)
Global asset manager specializing in sustainable infrastructure, real estate, and digital connectivity with extensive renewable energy and decarbonisation expertise. | Financial Services | πŸ‡ΈπŸ‡¬ Singapore | 1,615 | | | 15 | [Accenture Southeast Asia](https://www.tamtam.ai/c/accenture-southeast-asia) (accenture.com)
A global professional services company helping businesses and governments achieve digital transformation, optimize operations, drive revenue growth, and enhance citizen services | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1,549 | | | 16 | [IQVIA Asia Pacific](https://www.tamtam.ai/c/iqvia-asia-pacific) (iqvia.com)
Provider of advanced analytics, technology solutions, and clinical research services to life sciences companies for improved health outcomes. | Hospitals and Health Care | πŸ‡ΈπŸ‡¬ Singapore | 1,457 | 1954 | | 17 | [Space Matrix](https://www.tamtam.ai/c/space-matrix) (spacematrix.com)
Creating positive work environments that foster employee growth, business development, and environmental sustainability for collective success. | Design Services | πŸ‡ΈπŸ‡¬ Singapore | 1,182 | 2001 | | 18 | [PwC South East Asia Consulting](https://www.tamtam.ai/c/pwc-south-east-asia-consulting) (pwc.com)
Consulting professionals across Southeast Asia combining people and technology to solve business challenges, unlock value, and build societal trust. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1,169 | | | 19 | [Hytech](https://www.tamtam.ai/c/hytech-singapore) (hytechc.com)
Leading consultancy driving digital transformation for fintech businesses Specializing in strategic consulting, technology solutions, and data-driven services for global organizations | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 1,084 | 2022 | | 20 | [Cornerstone Global Partners (CGP Group)](https://www.tamtam.ai/c/cornerstone-global-partners-cgp-group) (cgpgroup.com)
A leading recruitment solutions and HR Technology platform with multiple awards, connecting high-quality talents and enterprises globally for the perfect fit | Staffing and Recruiting | πŸ‡ΈπŸ‡¬ Singapore | 991 | 2012 | | 21 | [InCorp Global](https://www.tamtam.ai/c/incorp-global) (incorp.asia)
Experts in business incorporation, secretarial & compliance, accounting & finance outsourcing, PEO, HR payroll, bookkeeping, taxation, immigration, VCC, family offices, business advisory, ESG, and risk assurance. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 988 | 2015 | | 22 | [Digital](https://www.tamtam.ai/c/digital) (hiredigital.com)
Helping enterprises and high-growth startups enhance digital capabilities by connecting them with top digital marketers, developers, and designers quickly and efficiently | Marketing Services | πŸ‡ΈπŸ‡¬ Singapore | 961 | 2015 | | 23 | [Singapore International Arbitration Centre](https://www.tamtam.ai/c/singapore-international-arbitration-centre) (siac.org.sg)
Provides neutral, efficient arbitration case management services globally, with expert arbitrators and transparent administration for international dispute resolution. | Alternative Dispute Resolution | πŸ‡ΈπŸ‡¬ Singapore | 702 | 1991 | | 24 | [RSM - Singapore](https://www.tamtam.ai/c/rsm-singapore) (rsm.global)
Providing audit, tax, advisory, and business support services to growing and international businesses, focusing on profit improvement and compliance. | Professional Services | πŸ‡ΈπŸ‡¬ Singapore | 644 | 1985 | | 25 | [Setsco Services Pte Ltd](https://www.tamtam.ai/c/setsco-services-pte-ltd) (setsco.com)
Comprehensive testing, calibration, inspection, certification, consultancy, and training services for industries including oil, aerospace, marine, food, electronics, and construction. | Professional Organizations | πŸ‡ΈπŸ‡¬ Singapore | 618 | 1963 | | 26 | [GreyB](https://www.tamtam.ai/c/greyb) (greyb.com)
Custom research on patents, scientific articles, and market trends with expert human analysis to support competitive business decisions. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 614 | 2007 | | 27 | [Drew & Napier LLC](https://www.tamtam.ai/c/drew-and-napier-llc) (drewnapier.com)
Provides world-class legal advice and representation to clients, solving complex problems and advancing interests through a network of top-tier law firms. | Law Practice | πŸ‡ΈπŸ‡¬ Singapore | 602 | 1889 | | 28 | [EM Services Pte Ltd](https://www.tamtam.ai/c/em-services-pte-ltd) (emservices.com.sg)
A property management company providing services in public housing, commercial properties, property engineering, contracts, project management, with a focus on service excellence | Facilities Services | πŸ‡ΈπŸ‡¬ Bukit Merah | 591 | 1988 | | 29 | [Sleek](https://www.tamtam.ai/c/sleek) (sleek.com)
Platform offering digital solutions for company incorporation, compliance, bookkeeping, payroll, taxes, and personalized entrepreneurial support across multiple countries. | Accounting | πŸ‡ΈπŸ‡¬ Singapore | 577 | 2017 | | 30 | [Recruit Express Group](https://www.tamtam.ai/c/recruit-express-group) (recruitexpress.com.sg)
Leading talent acquisition and flexible staffing firm in Asia, providing customized solutions for companies and job recommendation services for professionals across industries. | Human Resources Services | πŸ‡ΈπŸ‡¬ Singapore | 513 | 1996 | | 31 | [PeopleSearch](https://www.tamtam.ai/c/peoplesearch) (peoplesearch.jobs)
Identifying, assessing, and recruiting outstanding executives for mid to senior-level roles, providing bespoke human capital solutions to empower businesses and elevate careers in Asia. | Human Resources Services | πŸ‡ΈπŸ‡¬ Singapore | 459 | 2000 | | 32 | [Tectura](https://www.tamtam.ai/c/tectura) (tectura.com)
Provides business consulting services to mid-sized companies and large enterprises globally, helping clients create value and achieve business goals through technology and industry expertise. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 446 | 2001 | | 33 | [Asian Technology Solutions](https://www.tamtam.ai/c/asian-technology-solutions) (asian-technology.com)
Providing talent acquisition, consulting, IT services, cybersecurity, and fraud prevention solutions to businesses across Asia, Middle East, and Australia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 432 | 2014 | | 34 | [YCP](https://www.tamtam.ai/c/ycp) (ycp.com)
A corporate strategy consulting firm focused on Asia, helping clients with market entry, growth strategies, and deal advisory across various industries | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 416 | 2007 | | 35 | [Arth](https://www.tamtam.ai/c/arth) (arthtechglobal.com)
Provides innovative digital solutions and services for AEC professionals to transition from manual processes to data-driven workflows, enhancing productivity and operational margins. | Construction | πŸ‡ΈπŸ‡¬ Singapore | 401 | 2012 | | 36 | [Helius Technologies](https://www.tamtam.ai/c/helius-technologies) (helius-tech.com)
Provides IT services, talent and infrastructure on cloud, centers of excellence, permanent placements, and staffing augmentation for diverse industries across ASEAN. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 361 | 2006 | | 37 | [Baker Tilly Singapore](https://www.tamtam.ai/c/baker-tilly-singapore) (bakertilly.sg)
Provides assurance, tax, deal advisory, governance, risk, restructuring, outsourcing, and corporate secretarial services to diverse businesses. | Accounting | πŸ‡ΈπŸ‡¬ Singapore | 339 | | | 38 | [Knight Frank Singapore](https://www.tamtam.ai/c/knight-frank-singapore) (knightfrank.com.sg)
A global real estate consultancy in Singapore, providing integrated solutions, personalized advice, and innovative strategies to enhance investments, living spaces, and work environments | Real Estate | πŸ‡ΈπŸ‡¬ Singapore | 325 | 1940 | | 39 | [Rolling Arrays](https://www.tamtam.ai/c/rolling-arrays) (rollingarrays.com)
Provides HR transformation consulting, SAP SuccessFactors implementation, HR business consulting, change adoption, system support, and HRIS integration across Asia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 325 | 2009 | | 40 | [Xtremax](https://www.tamtam.ai/c/xtremax) (xtremax.com)
Leading cloud solutions provider transforming digital possibilities for government agencies, MNCs, and private organizations since 2003, with regional presence in Southeast Asia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 315 | 2003 | | 41 | [Renoir Consulting](https://www.tamtam.ai/c/renoir-consulting) (renoir.ycp.com)
A global change management consulting company with over 25 years of experience, serving as clients' preferred transformation partner for real outcomes and sustainable change | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 313 | 1994 | | 42 | [Aon Centre for Innovation and Analytics (ACIA)](https://www.tamtam.ai/c/aon-centre-for-innovation-and-analytics-acia) (aon.com)
Global investment in analytics delivering data-driven insights to clients, reducing volatility, and maximizing performance through risk, retirement, and health solutions. | Financial Services | πŸ‡ΈπŸ‡¬ | 309 | 2008 | | 43 | [Trangile Services](https://www.tamtam.ai/c/trangile-services) (trangile.com)
A global tech firm specializing in omnichannel solutions for retail, supply chain, and logistics, offering expertise in Oracle Retail, INFOR WMS, and more | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 296 | 2007 | | 44 | [GECO Asia Pte Ltd](https://www.tamtam.ai/c/geco-asia-pte-ltd) (geco.asia)
Providing expert IT consultancy and high-end technology resources across Asia, specializing in AI, Blockchain, Cloud, and Data Science. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 242 | 2006 | | 45 | [U3 Infotech](https://www.tamtam.ai/c/u3-infotech) (u3infotech.com)
Leading IT consulting and talent management services, delivering agile, scalable solutions across diverse industries for optimized operations, growth, and profitability. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 241 | 2002 | | 46 | [BTI Executive Search](https://www.tamtam.ai/c/bti-executive-search) (btiexecutivesearch.com)
Executive talent acquisition, succession planning, board consulting, and global/regional executive hiring. Services span Singapore, Malaysia, India, Australia, China, Hong Kong, Indonesia, Thailand. | Human Resources Services | πŸ‡ΈπŸ‡¬ Singapore | 202 | 1982 | | 47 | [Activate Interactive](https://www.tamtam.ai/c/activate-interactive) (activate.sg)
Technology consultancy providing end-to-end application development, cloud solutions, and UI/UX design to drive digital innovation and improve population health through holistic engineering. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 129 | 1997 | | 48 | [Pasona Singapore Pte. Ltd.](https://www.tamtam.ai/c/pasona-singapore-pte-ltd) (pasona.com.sg)
Professional recruitment agency with 35 years of experience in Singapore providing tailored HR services for clients and job seekers Specializes in local and Japanese-speaking talent placement | Human Resources Services | πŸ‡ΈπŸ‡¬ Raffles Place | 32 | 1983 | | 49 | [Dealxpert Sales Performance](https://www.tamtam.ai/c/dealxpert-sales-performance) (dealxpert.io)
It builds sales capabilities in Asia, offering tailored solutions and innovative tools for B2B sales organizations to enhance performance. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1 | 2018 | ## 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 Singapore - [The largest companies in Singapore](https://www.tamtam.ai/l/largest-companies-singapore) (672) - [Multinational companies in Singapore](https://www.tamtam.ai/l/multinational-companies-singapore) (398) - [Companies with in-house R&D in Singapore](https://www.tamtam.ai/l/r-and-d-companies-singapore) (95) - [Companies with a mobile app in Singapore](https://www.tamtam.ai/l/companies-with-mobile-app-singapore) (93) - [SaaS companies in Singapore](https://www.tamtam.ai/l/saas-companies-singapore) (85) - [Critical infrastructure operators in Singapore](https://www.tamtam.ai/l/critical-infrastructure-operators-singapore) (72) - [Corporate groups and holding companies in Singapore](https://www.tamtam.ai/l/holding-companies-singapore) (67) - [AI companies in Singapore](https://www.tamtam.ai/l/ai-companies-singapore) (66) - [IT Services and IT Consulting companies in Singapore](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-singapore) (66) - [Financial Services companies in Singapore](https://www.tamtam.ai/l/financial-services-companies-singapore) (65) - [Software Development companies in Singapore](https://www.tamtam.ai/l/software-development-companies-singapore) (60) - [Manufacturers in Singapore](https://www.tamtam.ai/l/manufacturers-singapore) (58) - [Financial services firms in Singapore](https://www.tamtam.ai/l/financial-services-firms-singapore) (57) - [Publicly traded companies in Singapore](https://www.tamtam.ai/l/publicly-traded-companies-singapore) (53) - [IT services companies in Singapore](https://www.tamtam.ai/l/it-services-companies-singapore) (53) - [Public sector organisations in Singapore](https://www.tamtam.ai/l/public-sector-organisations-singapore) (47) - [Consulting firms in Singapore](https://www.tamtam.ai/l/consulting-firms-singapore) (45) - [Fintech companies in Singapore](https://www.tamtam.ai/l/fintech-companies-singapore) (43) - [Subscription businesses in Singapore](https://www.tamtam.ai/l/subscription-businesses-singapore) (43) - [Retail chains in Singapore](https://www.tamtam.ai/l/retail-chains-singapore) (42) - [Education providers in Singapore](https://www.tamtam.ai/l/education-companies-singapore) (40) - [Hardware manufacturers in Singapore](https://www.tamtam.ai/l/hardware-companies-singapore) (40) - [Technology, Information and Internet companies in Singapore](https://www.tamtam.ai/l/technology-information-and-internet-companies-singapore) (37) - [Venture-backed startups in Singapore](https://www.tamtam.ai/l/venture-backed-startups-singapore) (36) ## The same list elsewhere - [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737) - [Professional services firms in Asia](https://www.tamtam.ai/l/professional-services-firms-in-asia) (1,619) --- Source: https://www.tamtam.ai/l/professional-services-firms-singapore