Group

Making critical organisations intelligent

Technologies evolve. Systems remain.

Organisations do not run on an app, a network or an AI alone. They run on systems that link the software, data, infrastructure and communications behind their operations.

When those systems fragment, costs rise, decisions slow and innovation stalls. Since 1991, 3s2i has designed, built, connected and evolved these digital systems in one coherent architecture. Not isolated solutions: coherent, scalable, durable systems organisations can rely on today and tomorrow.

The group 3s2i International – Tunis · engineering HQ Lixeo – Brussels · EU consulting & VAN Lixeo Maroc – Casablanca · e-government

Expertise

Four stages. One responsibility.

3s2i designs and runs the digital systems organisations depend on, from architecture to day-to-day operations. Software, AI, telecoms and infrastructure in one chain, so solutions stay coherent and controllable over time.

01

Design

Every project starts with sound architecture.
Processes, existing systems and operational constraints: we shape platforms around the business. Functional and technical architecture, legacy modernisation, data migration, IT landscaping, advisory and transformation roadmaps.

02

Build

We build the platforms that carry critical activity.
Business applications, sector platforms, cloud, APIs, integrations, decision dashboards and AI where it delivers a concrete operational gain. Designed to evolve, fit the existing estate, and stay manageable.

03

Connect

The best applications only matter if they communicate.
Connectivity that links users, equipment and sites: private networks, UCS, VoIP, point-to-point, radio and IoT. Built for critical operations. Catalogue detail under Connectivity.

04

Operate

A system does not stop at go-live.
Run, maintain, evolve, support and coach the business teams. Sensitive data: local or on-premise options. Critical steps stay under human and business control.

Design. Build. Connect. Operate. One chain of ownership, fewer vendor hand-offs, systems that last.

Connectivity

The links your operations cannot lose.

Business voice, private wireless and mobile broadband: designed, installed and run as one project. For operators, enterprises and public networks that need the connection to hold in production, not in a lab.

01

UCS & PBX

Business phone systems operators can sell as a service: full control, without forcing every customer to buy and host their own exchange.

  • Multi-tenant phone-business exchange for operator wholesale
  • Advanced call, presence and collaboration features
  • Flexible as-a-service delivery for enterprise customers
02

VoIP phones

Desktop and wireless SIP endpoints built for daily desk use: clear audio, simple interfaces, and secure integration into existing UCS/PBX and carrier SIP trunks.

  • Full SIP compatibility with operator and enterprise platforms
  • Desktop and wireless form factors for office and field teams
  • Security and provisioning aligned with business workflows
03

Point-to-point antennas

Long-range, high-throughput wireless links for private networks, when fibre is late, costly or impossible, and the link still has to be stable for operations.

  • Urban, rural and industrial backhaul deployments
  • Secure, high-speed private wireless transmission
  • Designed for harsh RF and environmental conditions
04

LTE / 5G

From all-in-one CPE to core building blocks, mobile broadband for enterprises, ISPs and smart-site programmes that need low latency and predictable coverage.

  • LTE and private 5G access for operators and enterprises
  • CPE, core and network components for rapid rollout
  • Fit for ISP, campus, industrial and smart-city use cases

Product systems

Built for the field.

Sector software that absorbs real workflows, security and longevity constraints. Start with the two systems below, or open the full catalogue.

Start here

Energy & industrial operations

CORIDEX

Digital oilfield HQ for gas corridors and compression: operational KPIs, site visibility and decision support for midstream O&M leadership.

Give corridor management one operational picture, before the next incident becomes a meeting.

Proof lineage · Oil & gas

Engagements with Eni Group, SERGAZ (Sea Corridor) and FINA: corridor and industrial programmes across Maghreb–Europe energy ops.

Finance, insurance & risk

NEXORIA

Multisector RFP and tender automation, from DCE analysis to collaborative Go/No-Go, with local AI and mandatory human validation.

A Go/No-Go in hours, not weeks, without losing control on compliance-critical steps.

Proof lineage · Institutions & industry

Banking and industrial programmes (incl. BAD, TIB, BIAT, Siemens, SACEM): environments where auditability and process discipline are non-negotiable.

All product systems

NEXORIA, dark tender war-room with orange data glow

Software · AI · Multisector: Telecom, IT, Pharmaceutical, Medical equipment

NEXORIA

Multisector RFP and tender automation, from DCE analysis to collaborative Go/No-Go, with local AI and multi-tenant security.

Win more tenders with a Go/No-Go decision in hours, not weeks, without losing human control.

Capabilities

  • DCE intake with OCR
  • Multi-axis tender analysis
  • Mandatory Go/No-Go sheet (sub-4h target)
  • Kanban workflow with human validations
  • Tenant RAG / technical memory
  • Sector packs and BPU mapping roadmap

Fit

  • Built forManufacturers & distributors answering tenders
  • SectorsTelecom · IT · Pharmaceutical · Medical equipment
  • AI postureLocal models · human validation gates
  • SecurityMulti-tenant isolation · role workflows
OCR & Go/No-Go Local LLM / RAG Collaborative filing Multilingual

About

Build systems. Don’t stack technologies.

The challenge is no longer to add one more technology. It is to make the whole work. That is 3s2i’s role.

Since 1991, we have designed digital systems where software, artificial intelligence, data, telecommunications and infrastructure work as one.

Value does not come from the technologies you add. It comes from the systems you control.

Tunis

Engineering headquarters is born. Offshore software built for systems that run in production.

Paris

Europe opens. The Maghreb–Europe corridor stops being an intention and becomes a delivery ground.

Brussels · Lixeo

IT consulting and VAN practice. European clients stay close to delivery, not remote from a distant centre.

Casablanca · Lixeo Maroc

Moroccan public sector joins the corridor. E-government, state programmes, local proximity.

Design · Build · Connect · Operate

The same responsibility, widened: software, AI, data, telecoms and infrastructure in one coherent architecture.

References

Trust is earned on the corridors.

Engagements from our Maghreb–Europe practice: energy, banking, telecom, public sector, industrial EDI, research and e-government.

Oil & gas

  • Eni Group
  • SERGAZ (Sea Corridor)
  • FINA

Banking

  • BAD. African Development Bank
  • TIB. Tunis International Bank
  • BIAT. Banque Internationale Arabe de Tunisie

Telecom operator

  • France Télécom (via GFI France)

E-government Morocco

  • Ministère des Affaires Générales
  • Ministry of Justice
  • CRI (via Lixeo Maroc)

Public sector Tunisia

  • CEPEX. Centre de Promotion des Exportations
  • La Poste Tunisienne

Research

  • World Laboratory (Lausanne)

Industry / EDI

  • Siemens
  • SACEM Tunisie
  • Hertz Belgium
  • MosaToys
  • Kinservices
  • HOME & MORE
  • Fédération Royale Belge du Hockey

Pioneer offshore software and EDI/VAN delivery in Tunisia and Morocco, long-running programmes on Maghreb–Europe digital corridors.

Proof point · Anonymised engagement

Industrial EDI corridor between Maghreb plants and European buyers

Context

A manufacturing group needed reliable B2B document exchange across Tunisian production sites and European trading partners, without fragile email attachments or one-off file drops.

What we did

We designed and operated an EDI/VAN delivery model from our Maghreb centres: message mapping, partner onboarding, monitoring, and a control path aligned with European buyer formats.

Outcome

A corridor operated continuously over multiple years: stable daily exchange (orders, notices, logistics documents), industrialised partner onboarding, and a clear drop in manual rekeys on both plant and buyer sides.

Sector: Industry / EDI · Geography: Maghreb–Europe · Model: offshore engineering + operated VAN · Horizon: multi-year programme

Contact

One channel. Direct reply.

Need a demo, a custom build, a partnership or support? Email is the official channel. Share your sector and your pressure point. The right owner replies within 2 business days. No phone numbers or street addresses on this site.

Include your company, country, and which product if relevant.

Compose a message

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