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SII Group

SII is an international group specialising in digital services and information and communication technologies (ICT). Founded in 1979, SII operates as a digital consulting and engineering company, providing long-term support to major groups in demanding sectors such as aeronautics, space and defence, banking and insurance, telecommunications, energy, and industry. With a presence in 21 countries and more than 16,000 employees, the group places human values and team commitment at the heart of its strategy.

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Industries

A key player in digital transformation, SII designs and integrates technological solutions, combining specific developments with proven technologies. From industry to finance, telecommunications, and services, the group supports its clients in the success of their most complex projects, both in France and internationally.

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Expertise

SII leverages its engineering and IT expertise to support, accelerate, and facilitate its clients' transformations. Our tailor-made solutions combine technical mastery, industry knowledge, and a pragmatic approach.

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Innovation

SII is involved in research and innovation activities, either independently or through partnerships, in order to support our clients and society in responding to major challenges: connected, inclusive, and sustainable territories and services, as well as eco-friendly, autonomous, and accessible transportation.

  • Optimize product operations within its ecosystem
  • Reducing time-to-market while ensuring reliability
  • Supporting the energy transition
  • Improvement of production and operation

CSR approach

At SII, we firmly believe that digital technology is a driver of opportunities and sustainable solutions. It enables us to support society and our clients in their transition towards a more resilient future, while strengthening our social commitment through equity, diversity, and inclusion, which are essential pillars in addressing social, climate, and environmental challenges.

  • SII Corporate Foundation
  • Diversity, Equity and Inclusion Mission

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Joining SII means engaging in a collective adventure: at SII, we dare, we innovate, and we commit ourselves to working together to build a sustainable, inclusive, and technological future.

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News

Follow the latest news from the SII Group. Discover our projects, our expertise, our commitments, and the life of our agencies in France and internationally.

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Actu-Olivier Lopez appointed Global Director of Bidding, Offers and Innovation.jpg
Press release
01 apr. 2025
Olivier Lopez appointed Global Director of Bidding, Offers and Innovation

The SII Group, a specialist in digital services and technology consulting, announces the appointment of Olivier Lopez as Global Director of Bidding, Offerings and Innovation.

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Actu_Space-technology-is-evolving,-and-so-is-our-expertise.jpg
Careers
20 mar. 2025
Space technology is evolving, and so is our expertise

For 15 years, SII has been working alongside its clients to meet these challenges, mobilising its experts throughout all phases of space projects.

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Actu_SII-France-named-Great-Place-To-Work-2025,-ranking-second-in-our-category.jpg
Careers
12 mar. 2025
SII France named Great Place To Work 2025, ranking second in our category

SII France has been recognised as one of the best companies and ranked second in the Best Workplaces 2025 list, in the category of companies with more than 2,500 employees.

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Actu_Thales-Alenia-Space-X-SII-innovating-and-performing-on-an-international-scale.jpg
Careers
19 feb. 2025
Thales Alenia Space X SII: innovating and performing on an international scale

How can you manage 50 software engineering applications, 2,000 users spread across several countries, and high security requirements?

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Actu_Thales-GroupxSII30-years-of-partnership-at-the-heart-of-innovation.jpg
Careers
19 feb. 2025
Thales Group x SII: 30 years of partnership at the heart of innovation

For 30 years, Thales Group and SII have been collaborating on strategic projects in key sectors: aerospace, defence and space.

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Actu_SII-West-inaugurates-its-premises-in-Rennes-with-the-ambition-of-becoming-a-leading-technology-hub-within-the-SII-group.jpg
Press release
30 jan. 2025
SII West inaugurates its premises in Rennes with the ambition of becoming a leading technology hub within the SII group.

The SII Group celebrates the inauguration of its premises in Rennes, located in Newton, one of the historic buildings of Atalante - Via Silva.

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Actu_The-SII-Group-establishes-itself-in-Pau.jpg
Press release
20 jan. 2025
The SII Group establishes itself in Pau

The SII Group launches its operations in Pau with the creation of a new site in the South-West region: SII Pyrénées.

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Actu_Schneider-Electric-x-SII-20-years-of-partnership-in-support-of-the-energy-transition-!.jpg
Careers
08 jan. 2025
Schneider Electric x SII: 20 years of partnership in support of the energy transition !

For 20 years, Schneider Electric, a global leader in industrial technology, has benefited from SII's expertise in software development, automated testing, verification, validation and automation.

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Actu_SII-aims-to-improve-mobility-for-blind-and-partially-sighted-people-with-I-CAN-SII.jpg
Press release
07 jan. 2025
SII aims to improve mobility for blind and partially sighted people with I CAN SII

SII is currently developing CAN SII, an innovative vibrating vest combining lidar, camera and data fusion to enhance the mobility, independence and safety of blind and visually impaired people.

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Actu_SII-Tours-inaugurates-its-new-premises-a-place-designed-for-collaboration-and-innovation.jpg
Press release
18 dec. 2024
SII Tours inaugurates its new premises: a place designed for collaboration and innovation

The SII Group is relocating its Tours office to 450 m² premises in the city centre, designed to support its growth and promote well-being and collaboration.

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Actu_SII-IDF-obtains-PASSI-certification-major-recognition-in-the-field-of-cybersecurity.jpg
Expertise
10 dec. 2024
SII IDF obtains PASSI certification: major recognition in the field of cybersecurity

The SII Group announces that it has obtained PASSI (Information System Security Audit Providers) certification, issued by the French National Agency for Information System Security.

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Actu_Our-new-CSR-brochure-is-now-available!.jpg
CSR
29 nov. 2024
Our new CSR brochure is now available!

Explore our initiatives in eco-design, R&D, diversity and inclusion, Great Place To Work, decarbonisation, responsible digital technology, and also through the SII Corporate Foundation.

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