Groupe SII
Groupe SII is a privately held French IT and engineering consulting firm founded in 1979, employing 16,000+ professionals across 21 countries and serving large enterprises in aerospace/defense, banking, telecom, energy, automotive, and healthcare through multi-year consulting, project, and Flexshore delivery engagements.
- Company typePrivate
- Founded1979
- HeadquartersParis, France
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What Groupe SII does
Groupe SII (SII Group) is a privately held French IT and engineering consulting firm founded in 1979 and headquartered in Paris. The company delivers professional services and specialized technical talent to large enterprises across seven primary verticals: Aerospace/Space/Defense, Banking/Insurance, Telecommunications, Automotive/Transport, Energy, Healthcare, and Commerce/Distribution. As of the source period, SII employs more than 16,000 collaborators across 21 countries and 100+ sites, anchored by ten French regional agencies (Paris, Aix-en-Provence, Nantes, Lyon, Strasbourg, Rennes, Bordeaux, Lille, Toulouse, Sophia Antipolis) and international subsidiaries in Germany, Belgium, Spain, Canada, the United States, Chile, Colombia, and India.
The service portfolio is organized around ten expertise areas: Applications, Data & AI, Cybersecurity, Infrastructure & Cloud, Manufacturing Engineering, Systems Engineering, Mechanical and Electrical Engineering, Embedded Systems, Test & Automation, and Test & Simulation. Delivery is structured around direct enterprise sales and a proprietary Flexshore model that blends onshore proximity with nearshore/offshore delivery centers in Romania, Poland, Colombia, India, and Morocco. Specialized subsidiaries include SII Solutions and the 2023-acquired cloud services firm Metanext; an internal R&D arm, SII Research, operates 8 laboratories and 15 demonstrators across four thematic programs (time-to-market, product operations, energy transition, production/exploitation).
Revenue is generated through Time & Materials, Fixed-Price, and Flexshore consulting engagements, plus managed services, sold under multi-year enterprise contracts. The customer base includes Airbus, Thales (30-year relationship, 1,000+ experts mobilized), Safran, BNP Paribas, Santander, Schneider Electric (20-year relationship, 150 dedicated experts), EDF, ENGIE, Orange, MBDA, Volkswagen, La Poste (10+ year relationship, 50+ projects), Roche, ABB, and SNCF. ESG credentials include EcoVadis Platinum (2026), CDP A List (2025), UN Global Compact signatory status, and ISO 9001/14001/27001 certifications across multiple subsidiaries.
Groupe SII firmographics
Firmographics- Name
- Groupe SII
- Legal name
- Groupe SII
- Website
- https://sii-group.com
- Company type
- Private
- Founded year
- 1979
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- Groupe SII is a privately held French IT and engineering consulting firm founded in 1979, employing 16,000+ professionals across 21 countries and serving large enterprises in aerospace/defense, banking, telecom, energy, automotive, and healthcare through multi-year consulting, project, and Flexshore delivery engagements.
- Ownership category
- akta.pro rank
Groupe SII industry classification
Industry- Product category
- IT Consulting and Engineering Services
- NAICS
- Management Consulting Services (54161), Computer Systems Design Services (541512), Computer Systems Design and Related Services (54151), Engineering Services (541330)
- SIC
- Services-Management Consulting Services (8742), Services-Engineering, Accounting, Research, Management (8700), Services-Computer Integrated Systems Design (7373)
- akta.pro primary industry
- Enterprise Architecture & IT Operating Model (BPAHAEAB)
- akta.pro secondary industries
- Electronic Warfare (EW) & Signals Intelligence (SIGINT) Systems (IMABAOAB), Manufacturing & Operations Excellence (Lean/Six Sigma) (BPAHAHAC), IT Governance, Risk & Compliance (IT GRC) Platforms (HDAEALAK)
Keywords
Where Groupe SII is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices22 records
Markets served
Groupe SII business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Professional Services and Consulting: Revenue generated through consulting engagements, project-based work, and managed services providing specialized IT and engineering talent to enterprise clients.
- Staffing and Talent Solutions: Providing specialized technical professionals for client projects through various engagement models including Time & Materials, Fixed-Price, and Flexshore arrangements.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom enterprise engagements |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels8 records
Groupe SII product offering
Product offeringCore offering
Groupe SII is an international IT consulting and engineering services firm providing specialized technical talent, digital transformation expertise, and project-based consulting engagements to large enterprises. The company delivers across ten core expertise areas (Applications, Data & AI, Cybersecurity, Infrastructure & Cloud, Manufacturing Engineering, Systems Engineering, Mechanical & Electrical Engineering, Embedded Systems, Test & Automation, and Test & Simulation) via Time & Materials, Fixed-Price, and Flexshore engagement models across 21 countries.
Product overview
Groupe SII is an international IT consulting and engineering services group (ESN) founded in 1979, operating in 21 countries with over 16,000 employees. The company's product and service portfolio centers on a set of core IT and engineering expertise areas — Applications, Data & IA, Cybersécurité, Infrastructure et Cloud, Ingénierie de fabrication, Ingénierie des systèmes, Ingénierie mécanique et électrique, Systèmes embarqués, Test et Automatisation, and Test et Simulation — which are delivered to clients across seven industry sectors (Aerospace/Defense, Banking/Insurance, Telecom, Automotive/Transport, Energy, Healthcare, Retail). The portfolio is complemented by specialized entities SII Solutions and the acquired cloud services company Metanext (acquired January 2023), and an R&D arm called SII Research (with 8 labs and 4 thematic research areas). The overall architecture is a platform of expertise areas supplemented by specialized subsidiaries and an innovation layer, rather than a single unified software product.
Differentiator
Problem solved
Functional benefit
Products and services
- Applications Custom software application design, development, and integration services covering the full application lifecycle from conception to deployment and maintenance for enterprise clients.
- Data & AI Data engineering, analytics, and artificial intelligence services that help clients leverage data assets and implement AI-driven solutions for process optimization and decision support.
- Cybersecurity Cybersecurity consulting and engineering services including threat analysis, security architecture design, and protection of digital assets and infrastructure for enterprise clients.
- Infrastructure et Cloud IT infrastructure design, cloud migration, and managed services including cloudification of networks and systems for telecom operators and enterprise clients.
- Ingénierie de fabrication Manufacturing engineering services supporting industrial clients across the product lifecycle, from process design to production optimization and quality assurance.
- Ingénierie des systèmes Systems engineering services covering requirements management, system architecture, integration, verification, and validation across complex industrial programs.
- Ingénierie mécanique et électrique Mechanical and electrical engineering design services for industrial equipment, aerospace systems, and manufacturing tooling.
- Systèmes embarqués Embedded systems development and engineering for aerospace, automotive, and industrial applications, including real-time operating systems and safety-critical software.
- Test et Automatisation Software testing, test automation, and QA services including functional testing, performance testing, and automated test framework development.
- Test et Simulation Simulation engineering and testing services for aerospace, defense, and industrial clients, supporting certification and validation of complex systems.
- SII Research SII's dedicated research and innovation arm comprising 250 collaborators, 40 researchers, 8 laboratories, and 15 demonstrators. Conducts co-innovation with clients across four thematic areas: reducing time-to-market, optimizing product operations, energy transition, and improving production and exploitation.
- Metanext A cloud services company acquired by SII Group in January 2023. Metanext strengthens SII's cloud expertise and expands support for blue-chip clients in banking, insurance, and manufacturing sectors.
- SII Solutions A specialized entity within the SII Group focused on specific client segments and delivery models, operating as part of SII's specialized subsidiaries.
Quantifiable outcome
- 30-year partnership with Thales Group
- +4 more outcomes
Companies that use Groupe SII
Customer profileNamed customers15 records
Segments7 records
Ideal customer profiles3 records
Groupe SII technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability14 records
Feature3 records
Groupe SII partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- MetanextcoreSII Group acquired 100% of Metanext, a cloud services company, in January 2023. The acquisition aims to strengthen SII's cloud expertise and expand its support for blue-chip clients, particularly in banking, insurance, and manufacturing sectors.
Scale indicators10 records
Recent moves6 records
Expansion highlights6 records
Groupe SII competitors and assessment
Company assessmentDirect peers
- Capgemini: Paris-headquartered global IT services and engineering firm with comparable vertical coverage (aerospace, defense, banking, energy) and similar Flexshore-style global delivery. SII competes with Capgemini on mid-sized French and European enterprise transformation mandates, though Capgemini operates at materially larger scale.
- Devoteam: French-headquartered IT consulting firm specializing in cloud, cybersecurity, data/AI, and digital transformation. Directly competes with SII on cloud (overlapping Metanext) and cyber services for large French and European enterprise clients.
- Sopra Steria: French-listed IT services group with strong positions across European banking, public sector, aerospace, and defense — directly overlapping SII's primary verticals. Both firms compete for French and European enterprise transformation and managed services contracts at similar scale.
- Aubay: French IT consulting and engineering services firm with comparable profile in IT services for banking, insurance, industry, and telecom. Competes with SII on similar mid-sized European consulting mandates with an offshore-mixed delivery model.
- Wavestone: French-headquartered pure-play management and technology consulting firm with deep expertise in banking, insurance, and energy. Comparable to SII's higher-end consulting and digital transformation work for large French and European enterprises.
- Alten: French engineering and technology consulting group serving automotive, aerospace, energy, and life sciences with embedded and systems engineering. Highly comparable to SII in its dual IT/engineering positioning and European industrial-client base.
Broad incumbents
- Atos: French-headquartered global IT services incumbent with broad portfolios across digital, cloud, security, and managed infrastructure. Operates at much larger scale than SII but competes head-to-head on European enterprise transformation mandates, especially in banking and public sector.
- Accenture: Global IT services and consulting leader with deep presence across all of SII's primary verticals. While Accenture's scale and digital capabilities dwarf SII's, they compete for the same enterprise transformation budgets, especially with French multinationals.
- CGI Group: Canada-based global IT and engineering services firm with strong European footprint (especially France, Germany, Nordics) and significant aerospace/defense and banking verticals. Overlaps with SII in Canada, Germany, and France enterprise IT services.
Regional players
- Tietoevry: Nordic-headquartered IT services and engineering firm with banking, public sector, and industrial clients across Northern Europe. Comparable to SII in its IT services portfolio but primarily serves a different geography (Nordics/Baltics) rather than France/Benelux.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Groupe SII social profiles
Digital presenceGroupe SII compliance and trust
Trust signalCompliance8 records
Groupe SII financial estimates
Financial estimateRevenue estimate
Valuation estimate
Groupe SII leadership team
Management profileNumber of profiles
Profiles23 records
Groupe SII subsidiaries and ownership
Company hierarchySubsidiaries2 records
Groupe SII funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Groupe SII M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Groupe SII
What does Groupe SII do?
Groupe SII is an international IT consulting and engineering services firm providing specialized technical talent, digital transformation expertise, and project-based consulting engagements to large enterprises. The company delivers across ten core expertise areas (Applications, Data & AI, Cybersecurity, Infrastructure & Cloud, Manufacturing Engineering, Systems Engineering, Mechanical & Electrical Engineering, Embedded Systems, Test & Automation, and Test & Simulation) via Time & Materials, Fixed-Price, and Flexshore engagement models across 21 countries.
Is Groupe SII a public or private company?
Groupe SII is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Groupe SII founded?
Groupe SII was founded in 1979. It employs 1,001 to 5,000 people.
Where is Groupe SII based?
Groupe SII is headquartered in Paris, France, in the Europe region.
How does Groupe SII make money?
Two revenue lines are on record. Professional Services and Consulting is the primary driver. The others are staffing and Talent Solutions.
Who are Groupe SII's main competitors?
Direct peers on record are Capgemini, Devoteam, Sopra Steria, Aubay, Wavestone and Alten. Broad incumbents are Atos, Accenture and CGI Group. Tietoevry is listed as a regional player.
Does Groupe SII have an API?
No public API is recorded for Groupe SII.
What industry is Groupe SII in?
Groupe SII's product category is IT Consulting and Engineering Services. Its primary akta.pro industry code is BPAHAEAB, Enterprise Architecture & IT Operating Model, with a secondary code of IMABAOAB, Electronic Warfare (EW) & Signals Intelligence (SIGINT) Systems. Its NAICS code is 54161 and its SIC code is 8742.