# ICSIs

> ICSIS is a Lille-founded French independent digital services and IT consulting company, established in 2013, helping organizations with digital transformation through application development, data/BI and project-management consulting.

Company page on Leadbay: https://mad-max.leadbay.ai/company/icsis.fr · loaded 2026-10-29

## At a glance

- Website: https://icsis.fr
- Team based in: Lille (Leadbay's record and 2 more)
- Incorporated: Lille, France (register)
- Registry: SIREN 797 696 846
- Founded: 2013 (free-work.com and 2 more)
- Founders: Jacques Sitz, Eric Lenglet, Augustin Olivier
- Industry: Information Technology & Services
- Employees: 36 (employees and founders, investors not counted; icsis.fr and 1 more)
- Seen in its site's code: WordPress (/wp-content/), OVHcloud mail (MX mx2.ovh.net) (read 2026-10-30)
- Phone: 03 20 06 50 50
- Address: 46 RUE DES CANONNIERS, 59800, LILLE, fr

## What it sells, to whom

- ICSIS is a Lille-founded French independent digital services and IT consulting company, established in 2013, helping organizations with digital transformation through application development, data/BI and project-management consulting. ([icsis.fr](https://www.icsis.fr/en/home/), [craft.co](https://craft.co/icsis), [cbinsights.com](https://www.cbinsights.com/company/icsis))

## Why it stands out

- Competes with: Ometis, Infotrek, IVORY Consulting & Research, RedMaxx Consulting ([craft.co](https://craft.co/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))

## Products and services

- **Custom application development**: front-end, back-end, DevOps, microservices/API and cloud technologies. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- Business intelligence, big data, data integration, data lakes, master-data management and data visualization. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- **Project steering and governance**: project management, Agile/Scrum/Safe, PMO, Lean, CMMI, ITIL and SLA support. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- Architecture and technology consulting, impact assessment, rollout assistance and change management. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- **Mobility solutions**: iOS, Android, Xamarin, native/hybrid applications and UX/mobile. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- Consulting and staffing/portage services, including support for independent consultants. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))

## Customers and markets

- **Customers**: Customer sectors publicly identified: banking, finance, insurance, distribution and e-commerce, services and utilities. ICSIS does not publicly name specific customers in the sources reviewed. ([icsis.fr](https://www.icsis.fr/en/home/), [cbinsights.com](https://www.cbinsights.com/company/icsis), [linkedin.com](https://linkedin.com/company/icsis-est))
- **Markets**: France, with operating locations in Lille and Strasbourg/Schiltigheim and recent staffing demand extending to Nancy and Nantes. ([icsis.fr](https://www.icsis.fr/en/home/), [linkedin.com](https://linkedin.com/company/icsis-est), [lagazettefrance.fr](https://www.lagazettefrance.fr/article/icsis-le-partenaire-specialise-dans-l-e2-80-99evolution-et-la-transformation-des-systemes-d-e2-80-99information))
- **Markets**: Banking and finance. ([icsis.fr](https://www.icsis.fr/en/home/), [linkedin.com](https://linkedin.com/company/icsis-est), [lagazettefrance.fr](https://www.lagazettefrance.fr/article/icsis-le-partenaire-specialise-dans-l-e2-80-99evolution-et-la-transformation-des-systemes-d-e2-80-99information))

## Team

- Jacques Sitz, Fondateur, Directeur Associé · [LinkedIn](https://www.linkedin.com/in/jacques-sitz-4a74221b)
- Eric Lenglet, Fondateur, Directeur Associé · [LinkedIn](https://www.linkedin.com/in/icsis-eric-lenglet)
- Augustin Olivier, Founder
- Simon Potié, Directeur de marché · [LinkedIn](https://www.linkedin.com/in/simon-potié-nextoo)
- Théo Thuillier · [LinkedIn](https://www.linkedin.com/in/théo-thuillier)
- Livio Feler · [LinkedIn](https://www.linkedin.com/in/livio-feler-83ab4014b)
- David Martin · [LinkedIn](https://www.linkedin.com/in/lyneia/en)
- Abeer Al Ashkar, Géologique - Developeur Cobol · [LinkedIn](https://www.linkedin.com/in/dr-abeer-al-ashkar-277584196)
- Sullivan Dupuis · [LinkedIn](https://www.linkedin.com/in/sullivan-dupuis-06361263)
- Nana Sissoko · [LinkedIn](https://www.linkedin.com/in/nana-sissoko-649a1b7a)
- Dalal Khamri · [LinkedIn](https://www.linkedin.com/in/dalal-khamri-abaa37125)
- Damien L. · [LinkedIn](https://www.linkedin.com/in/dleloup95)

## Where to find more

- [This page in Markdown, for agents](https://mad-max.leadbay.ai/company/icsis.fr.md)

## Decision makers

- [Jacques Sitz](https://mad-max.leadbay.ai/person/jacques-sitz--icsis.fr.md), Fondateur, Directeur Associé · [LinkedIn](https://www.linkedin.com/in/jacques-sitz-4a74221b)
- [Eric Lenglet](https://mad-max.leadbay.ai/person/eric-lenglet--icsis.fr.md), Fondateur, Directeur Associé · [LinkedIn](https://www.linkedin.com/in/icsis-eric-lenglet)
- [Augustin Olivier](https://mad-max.leadbay.ai/person/augustin-olivier--icsis.fr.md), Founder
- [Simon Potié](https://mad-max.leadbay.ai/person/simon-potie--icsis.fr.md), Directeur de marché · [LinkedIn](https://www.linkedin.com/in/simon-potié-nextoo)

Work emails and direct phones come with a Leadbay account: https://wow.leadbay.ai/?register=true

Where it comes from: 15 sites read (icsis.fr, craft.co, cbinsights.com, linkedin.com, societe.com, renord.fr, annuaire-entreprises.data.gouv.fr, deedz.fr, …), the French register and the BODACC.

## Best angle

2026-09-29 · News: ICSIs Transport Resilience Pathways (1 source)

## Best way in

- LinkedIn message to Jacques Sitz: Fondateur, Directeur Associé · profile linked from the company's record
- LinkedIn message to Eric Lenglet: Fondateur, Directeur Associé · profile linked from the company's record
- Call the front desk, 03 20 06 50 50: The front desk, in Leadbay's record, verified 2026-08-28

## Signals: what happened

- 2026-09-29 · News: ICSIs Transport Resilience Pathways (1 source: [linkedin.com](https://www.linkedin.com/posts/sustainability-coalition_climateresilience-ports-infrastructureresilience-activity-7508550847178424321-OV0t))
- 2026-08-14 · News: ICSIS — Mission freelance Lead Tech Node.js Lille (1 source: [free-work.com](https://www.free-work.com/fr/tech-it/job-mission/lead-developer/developpeur-fullstack-node-vue-ou-angular-1))
- 2026-07-29 · News: Niklas Steffens' Post (1 source: [linkedin.com](https://www.linkedin.com/posts/niklas-steffens-b717886_icsis-socialidentity-sportpsychology-activity-7485135023927566340-t5Ay))
- 2026-06-29 · News: AI Governance and Sustainability at ICSIS 2026 in Valencia (1 source: [linkedin.com](https://www.linkedin.com/posts/prof-daniella-tilbury-8164861a_icsis2026-ai-sustainability-activity-7470819421184262145-P_8t))
- 2026-06-29 · News: Detailed Program | ICSIS (1 source: [linkedin.com](https://www.linkedin.com/posts/tahalpara_detailed-program-icsis-activity-7469563370182967296-miht))
- 2026-06-13 · News: Presenting at ICSIS 2026 on Satellite AI and Environmental Due ... (1 source: [linkedin.com](https://www.linkedin.com/posts/ekoellner_icsis2026-sustainability-innovation-activity-7471571794903072768-llLb))
- 2026-06-10 · News: Bonjour à tous! Nous sommes ravis de participer comme exposant à la Job Connect IA & Tech organisé par l'APEC! C'est ce lundi 15 juin après-midi au sein de la CCI, Place … (1 source: [fr.linkedin.com](https://fr.linkedin.com/posts/icsis-est_bonjour-%C3%A0-tous-nous-sommes-ravis-de-participer-activity-7470501600797630464-ZaIB))
- 2026-06-10 · News: What a wonderful evening at the ICSIS 2026, FLICS 2026, HAXD 2026, and EITS 2026 𝗚𝗮𝗹𝗮 𝗗𝗶𝗻𝗻𝗲𝗿! (1 source: [linkedin.com](https://www.linkedin.com/posts/fahedalkhabbas_icsis2026-flics2026-haxd2026-activity-7470596657315966976-hBR5))
- 2026-01-29 · News: Fahed Alkhabbas, PhD's Post (1 source: [linkedin.com](https://www.linkedin.com/posts/fahedalkhabbas_the-2nd-international-conference-on-sustainability-activity-7420196650062839808-R5KY))

## Solvency

From the national register (INSEE, INPI) and the BODACC, read 2026-10-30. SIREN 797696846.

- Status: active, registered 2013-10-01 · SAS
- Procédures collectives: none in the BODACC (no sauvegarde, redressement or liquidation judiciaire)
- Revenue (chiffre d'affaires) 2023: €916,881
- Net income (résultat net) 2023: €909,972
- Accounts filed (comptes déposés): 2023-12-31, 2021-12-31, 2020-12-31
- Legal officers: Eric Lenglet, Directeur Général; Augustin Olivier, Président de SAS; Jacques Sitz, Directeur Général; EXPERT AUDIT COMMISSARIAT, Commissaire aux comptes titulaire
- Grade (Jev): C, moderate risk
- Risk of failure within 12 months (Jev, read 2026-10-25): 9%
- Risk of paying 90 days late within 12 months (Jev): 16%
- Pays its invoices (Jev): Within 30 days
- Cash on hand (Jev): Over 24 months of spending
- Debt (Jev): No financial debt
- What Jev read: Active, created 2013-10-01; Profitable in 2023 (résultat net); No procédure collective in the BODACC; Accounts filed for the year closed 2023-12-31 (comptes déposés)

## Working on now

- Digital transformation services for medium and large accounts, with a regional-proximity model centered on Lille and Strasbourg.
- Current delivery focus includes application engineering, cloud/DevOps, architecture, project steering, business intelligence, Big Data, data integration, MDM and visualization.
- Recent demand is concentrated in data engineering and modernization: DataLake transformation, Snowflake/GCP/BigQuery/dbt/Semarchy/Airflow/Python, SAP S/4HANA/Fiori, and full-stack Node/Vue/Angular/Kafka/Kubernetes.
- ICSIS is actively staffing long client missions and expanding the practical delivery footprint to Lille, Strasbourg, Nancy and Nantes.
- The company continues to support both employee consulting and independent-contractor/portage-salarial models.

From: [Innovation, Consulting and Services | Page d'Accueil](https://www.icsis.fr/en/home/), [icsis](https://linkedin.com/company/icsis-est), [Offres publiées par ICSIS | Free-Work](https://www.free-work.com/fr/companies/icsis-1/jobs), [Bonjour à tous! Nous avons beaucoup de demandes en ce moment et à venir sur cette fin d'année! | ICSIS](https://fr.linkedin.com/posts/icsis-est_bonjour-%C3%A0-tous-nous-avons-beaucoup-de-demandes-activity-7509272150575345665-xS7M), [ICSIS](https://fr.linkedin.com/company/icsis-est), [Jacques SITZ](https://linkedin.com/in/jacques-sitz-4a74221b)

## Summary

ICSIS is an independent French digital services company (ESN) founded in 2013 by Eric Lenglet, Augustin Olivier, and Jacques Sitz [1][2][3]. Headquartered in Lille with an additional office in Schiltigheim, the firm provides IT consulting, custom software development, business intelligence, big data analytics, and project management services [4][1][2][5]. It serves mid-to-large corporate clients, specifically in the banking, finance, insurance, retail, e-commerce, and utilities sectors [1][2][6]. ICSIS operates as an independent entity and does not list external institutional investors [1]. Its competitors include firms such as RedMaxx Consulting, Ometis, Ivory Consulting & Research, and Infotrek [1][5]. Latest news reflects a continued focus on recruitment and business development through late 2026, with active job postings for technical roles and ongoing project procurement efforts [1]. In 2025, the company engaged in team-building activities and professional networking events, including sponsorship of the 2025 Spi Dauphine sailing regatta [1].

[1]: https://linkedin.com/company/icsis-est "ICSIS"
[2]: https://www.lagazettefrance.fr/article/icsis-le-partenaire-specialise-dans-l-e2-80-99evolution-et-la-transformation-des-systemes-d-e2-80-99information "ICSIS, le partenaire spécialisé dans l’évolution et la transformation des systèmes d’information | La Gazette France"
[3]: https://www.deedz.fr/entreprise/icsis-797696846 "Société ICSIS à Lille (797696846) : chiffre d'affaires, dirigeants"
[4]: https://www.icsis.fr/en/home/ "Innovation, Consulting and Services | Page d'Accueil"
[5]: https://craft.co/icsis "ICSIS Company Profile - Office Locations, Competitors, Revenue, Financials, Employees, Key People, Subsidiaries | Craft.co"
[6]: https://linkedin.com/in/jacques-sitz-4a74221b "Jacques SITZ"
[7]: https://www.cbinsights.com/company/icsis "ICSIS - Products, Competitors, Financials, Employees, Headquarters Locations"
[8]: https://www.free-work.com/fr/companies/icsis-1 "ICSIS : missions freelance et offres d'emploi | Free-Work"

## Sources

- [Icsis's website](https://icsis.fr)
- [Company record, via Exa](https://icsis.fr/)
- [Offres publiées par ICSIS | Free-Work](https://www.free-work.com/fr/companies/icsis-1/jobs)
- [Bonjour à tous! Nous avons beaucoup de demandes en ce moment et à venir sur cette fin d'année! | ICSIS](https://fr.linkedin.com/posts/icsis-est_bonjour-%C3%A0-tous-nous-avons-beaucoup-de-demandes-activity-7509272150575345665-xS7M)
- [ICSIS](https://fr.linkedin.com/company/icsis-est)
- [Société ICSIS à LILLE (59800). Chiffre d'affaires, extrait Kbis, bénéfice, statuts, extrait RNE, bilans, actionnaires - 797696846](https://www.societe.com/societe/icsis-797696846.html)
- [ICSIS – Réseau Entreprendre Nord : Annuaire](https://renord.fr/wp/annuaire-professionnel/icsis/)