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Top Professional Services Companies in Dublin (61)

Deloitte
Information Technology • Professional Services • Business Intelligence • Consulting
54 Offices
436,336 Employees
47 Benefits

Deloitte drives progress. Our firms around the world help clients become leaders wherever they choose to compete. Deloitte invests in outstanding people of diverse talents and backgrounds and empowers them to achieve more than they could elsewhere. Our work combines advice with action and integrity. We believe that when our clients and society are stronger, so are we. Deloitte refers...

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Deloitte

Deloitte's Top Stability & Growth Strengths

Strong Market Position & Advantage: Global consulting share is reinforced by multi‑year No. 1 rankings in Gartner market‑share analyses, with leadership placements across multiple consulting niches. Scale and an end‑to‑end model spanning strategy through technology, risk, tax, and audit underpin this advantage.

Strong Brand Reputation: Brand Finance repeatedly naming Deloitte the world’s most valuable commercial services brand signals wide market visibility and client trust. Consistent placement as a Leader in Gartner Magic Quadrants and IDC MarketScape coverage further supports perceived execution strength in complex transformations.

Resilient & Sustainable Growth: Global revenue rose in FY2024 and again in FY2025, with the workforce expanding and the Americas driving momentum while other regions varied. Ongoing mix shifts toward technology‑enabled consulting, Operate services, and AI‑related offerings suggest continued, balanced expansion.

Affidea
Healthtech • Professional Services
16 Offices
15,000 Employees
19 Benefits

Affidea is a pan-European diagnostic imaging and community-based polyclinic and specialist healthcare services provider, operating in Greece since 2005 to offer high-quality, integrated primary health services.

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Affidea
Forvis Mazars
Professional Services • Consulting • Financial Services
38 Offices
7,307 Employees

FORVIS, LLP ranks among the nation's top 10 public accounting firms. FORVIS is driven by the commitment to use our forward vision to deliver Unmatched Client Experiences. FORVIS was formed in 2022 through the combination of two firms with more than 150 years combined experience, both committed to providing high-quality personal service. FORVIS brings a distinct legacy of what it...

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Forvis Mazars

Forvis Mazars 's Top Stability & Growth Strengths

Strong Revenue Growth: Global revenue has increased year over year, and the U.S. business also posted gains across Tax, Assurance, and Consulting. The trajectory points to sustained momentum across core service lines.

Market Expansion: The organization significantly expanded its footprint by forming a new global network and adding offices in additional U.S. markets. Headcount and presence have grown in major metros, indicating broader reach.

Strong Market Position & Advantage: The firm is consistently ranked among the top 10 in the U.S. and operates within a top‑10 global network following the Mazars combination. Industry recognition and sector depth reinforce a competitive standing outside the Big Four.

Eliassen Group
Professional Services • Consulting
26 Offices
1,152 Employees
18 Benefits

Eliassen Group is a leading strategic consulting company that provides business, clinical, and IT services for our clients as they seek to transform and execute strategies that will drive exceptional outcomes. Leveraging over 30 years of success, we focus on clinical solutions, professional services, and talent solutions. Eliassen Group positively impacts the lives of our employees, clients, consultants, and the...

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Eliassen Group

Eliassen Group's Top Stability & Growth Strengths

Market Expansion: Acquisitions such as VIA Technical, SafeNet Consulting, and The Evanston Group broaden geographic reach and deepen technology and life sciences capabilities. Maintaining a national office footprint and adding presence in key regions signal deliberate growth in addressable markets.

Strong Brand Reputation: Industry accolades like repeated U.S. Best Managed Company honors and ClearlyRated Best of Staffing Diamond awards highlight sustained external validation of quality and performance. Recognition by sector publications and lists reinforces credibility within staffing and consulting niches.

Future-Ready Strategy: Emphasis on digital transformation, AI data services, cybersecurity, and cloud infrastructure points to proactive positioning for evolving client needs. Partnerships and platform integrations, including operational systems consolidation, are positioned to support scale and innovation.

Hollis
Professional Services • Real Estate
23 Offices
570 Employees
Hiring Now

Hollis is an independent real estate consultancy serving owners, occupiers, developers and funders in the private and public sectors. Its multidisciplinary team of surveyors, engineers, ESG consultants, project managers and technical specialists supports clients throughout the property life cycle. Operating across the UK, Ireland, Germany, Spain and the Netherlands, Hollis delivers advice and project services across commercial and other property...

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Hollis
Dcc Global
Information Technology • Professional Services • Database • Analytics
3 Offices
1,500 Employees

GlobalDCC is a global information solutions company specializing in database management and document/records management, providing unique insights for sustainable growth. They offer services in human resources, finance, operations, and sales and marketing.

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Dcc Global
Optum Insight
Healthtech • Information Technology • Professional Services • Analytics
10 Offices
300,000 Employees
36 Benefits

Optum Insight provides technology-enabled services, advanced analytics, and platforms focused on the healthcare system to help customers reduce costs, manage risk and quality, and grow revenue. It aims to simplify and connect clinical, administrative, and financial processes within healthcare.

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Optum Insight
EDC Engineering Design Consultants LTD.
6 Offices
141 Employees
Hiring Now

EDC is an international engineering consultancy specializing in mechanical, electrical and plumbing (MEP) design, BIM, and energy and sustainability services. It develops integrated, efficient, low-carbon building solutions for projects across Ireland and the UK. Its work spans digital design and coordination, sustainability strategies, retrofit, and building optimization, supporting project performance, compliance, cost efficiency, and long-term value for commercial, residential, healthcare,...

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EDC Engineering Design Consultants LTD.
Forvis Mazars Group
Professional Services • Financial Services
36 Offices
7,579 Employees
14 Benefits

Forvis Mazars Group SC is an independent member of Forvis Mazars Global, a leading global professional services network. Operating as an internationally integrated partnership in over 100 countries and territories, we specialise in audit, tax and advisory services.

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Forvis Mazars Group
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Flynn O'Driscoll LLP
Professional Services
2 Offices
140 Employees

Flynn O'Driscoll LLP is a full-service commercial law firm headquartered in Dublin, Ireland, with additional offices in Galway and Shannon. Founded in 2002 as Patrick G. Flynn Solicitors, it has grown through a series of strategic mergers into one of Ireland's leading corporate law firms, advising multinationals, public sector bodies, and owner-managed businesses across aviation, banking and finance, real estate,...

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Flynn O'Driscoll LLP
Group GTI
Edtech • HR Tech • Professional Services • Software
3 Offices
206 Employees

Group GTI helps students build confidence, skills and opportunities to move into work. It partners with employers and educational institutions, offering career guidance platforms, AI-enabled software, student research, events and recruitment services. Its products support educators with career management and student counselling, while employers use its tools and managed services to attract, assess and hire graduates and apprentices. Group GTI...

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Group GTI
Aztec Group
Professional Services • Consulting • Financial Services
9 Offices
2,325 Employees

Aztec Group is an owner-managed, regulated fund and corporate services firm specialising in alternative investments. It provides fund administration, corporate and investor services across private equity, private credit, real assets and infrastructure, supporting cross-border fund operations from offices in key jurisdictions and administering hundreds of funds and hundreds of billions in assets for institutional clients.

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Aztec Group
Fenero
Professional Services • Financial Services
2 Offices
100 Employees

Fenero is an Ireland-based provider of tax, accounting, payroll, compliance, and financial-advisory services for contractors, freelancers, and other self-employed professionals. Founded in 2009, the company supports clients with specialist contractor accounting and taxation services, while its regulated financial-advisory arm provides financial planning and related administrative support. Its mission is to deliver expert guidance tailored to the needs of Ireland’s self-employed...

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Fenero
Mazars in Romania
Professional Services • Consulting
36 Offices
250 Employees

Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*. Operating in 95+ countries and territories around the world, we draw on the expertise of more than 47,000 professionals – 30,000+ in Mazars’ integrated partnership and 17,000+ via the Mazars North America Alliance – to assist clients of all sizes at every stage in their...

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Mazars in Romania
CACEIS
Professional Services • Financial Services
5 Offices
7,279 Employees
3 Benefits

CACEIS is the asset servicing banking group of Crédit Agricole and Santander dedicated to asset managers and institutional investors. Through offices across Europe, North and South America, and Asia, CACEIS offers a broad range of services covering - execution, - clearing, - forex, - securities lending, - custody, - depositary, - fund administration, - fund distribution support, - middle-office outsourcing...

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CACEIS
CAI (caiready.com)
Professional Services
18 Offices
1,139 Employees
30 Benefits

At CAI, we are a professional services firm designed to accelerate operational readiness and excellence in critical environments. Our team of engineering, quality, and operations experts combines top-tier talent with the latest technology to deliver projects on time and within budget. We're committed to continuous improvement, real connections, and the highest standards, aiming to lead the industry and build the...

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CAI (caiready.com)
GLG
Professional Services • Software • Consulting • Financial Services
12 Offices
9,740 Employees
36 Benefits Hiring Now
GLG connects thousands of the world’s best businesses to the largest and most varied source of first-hand expertise.

GLG is the world’s insight network. We connect decision makers to the right experts so they can act with the confidence that comes from true clarity and have what it takes to get ahead. Our network of experts is the world’s largest and most varied source of first-hand expertise, and we recruit hundreds of new experts every day. We bring...

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GLG

GLG's Top Stability & Growth Strengths

Strong Market Position & Advantage: GLG is widely regarded as the category pioneer and often the largest expert network by scale, with entrenched relationships across major PE funds, banks, consultancies, and corporates.

Innovation-Driven Growth: Recent launches such as the redesigned, AI-enabled myGLG portal and an expanding transcript/survey offering indicate active product development and efforts to increase client engagement and throughput.

Strategic Partnerships: Content-distribution tie-ups with FactSet and Bloomberg and other collaborations extend reach and reinforce GLG’s role at enterprise scale.

Sia Partners
Healthtech • Professional Services • Consulting • Generative AI • Manufacturing
33 Offices
3,323 Employees
4 Benefits Hiring Now

Sia Partners is a next generation management consulting firm and pioneer of Consulting 4.0. We offer a unique blend of AI and design capabilities, augmenting traditional consulting to deliver superior value to our clients. Counting 1,800 consultants in 18 countries, we expect to achieve USD 300 million in turnover for the current fiscal year. With a global footprint and expertise...

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Sia Partners

Sia Partners's Top Stability & Growth Strengths

Investor Backing & Capital Strength: Recent investment by Blackstone of up to €250 million in December 2024 provides growth capital and signals external confidence in the firm’s expansion plans. Company statements link this funding to accelerating U.S. growth, M&A, and AI-enabled offerings.

Market Expansion: Multiple acquisitions and a sustained U.S. push (e.g., Notion Consulting, Ready Set Rocket, Precedence, Kaiser Associates) indicate ongoing geographic and service-line expansion across North America and Europe. Leadership attention to the U.S. market and a growing office footprint suggest increased depth in key geographies.

Innovation-Driven Growth: The firm is productizing AI (e.g., SiaGPT and 800+ deployable AI agents by April 2026) and launching new lines like Corporate Strategy, PE & M&A, pointing to growth via differentiated, tech-enabled delivery. Partnerships and ecosystem recognition around NVIDIA and AWS reinforce momentum in AI-driven consulting.

Walls Construction
Professional Services
Dublin
586 Employees
Hiring Now

Walls Construction is an Irish-owned, privately owned building contractor operating nationally from offices in Dublin and Cork. Established by PJ Walls in 1950, it delivers construction projects across commercial offices, data centres, education, healthcare, industrial, residential, leisure and sport, life sciences and pharmaceuticals. The company emphasizes quality, customer service, stakeholder outcomes and sustainable, on-time delivery for clients, design teams, contracting...

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Walls Construction
Roughan & O'Donovan
Professional Services • Consulting
3 Offices
260 Employees
Hiring Now

Roughan & O’Donovan (ROD) is an independently owned Irish civil, environmental and structural engineering consultancy. The firm plans, designs and manages major infrastructure projects, providing multidisciplinary expertise across roads, bridges, transport, water, environmental, geotechnical and building-related work. Founded by Derry Roughan and Joe O’Donovan, ROD operates from offices in Dublin, Cork and Leeds and serves complex infrastructure programmes for public...

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Roughan & O'Donovan

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