Identity
Strong authentication, entitlement management and access control.
REELIANT · Digital Engineering Workshop
Engineering trust.
Develop. Modernize. Maintain.
Designing and operating reliable services in living systems. We add new capabilities to architectures in production, without breaking what works.
Top 1% EcoVadis Platinum
40+ Regulated clients
100+ Services in production
Signals
The moments when engineering becomes decisive.
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The moment when a service must change scale
The prototype works. But now it must hold the load, integrate the IS, trace usage, secure the RUN. Industrialisation is no longer optional.
Ref. Development & AI -
The moment when the system starts slowing down
Each release becomes a negotiation. Dependencies blur. Technical debt starts dictating the trade-offs, and the system's memory disperses.
Ref. Modernization -
The moment when trust becomes a prerequisite
New channels, signature, wallet, AI in production: it's no longer just about shipping fast. The system must remain operable three years from now.
Ref. Digital trust -
The moment when compliance shapes the architecture
AI Act, NIS2, eIDAS, PSD2: compliance can no longer be added afterwards. It becomes a design constraint, then an operating discipline.
Ref. Trust Condition Maintenance (TCM)
Every critical transformation eventually becomes a matter of architecture.
What we do
Develop. Modernize. Maintain.
Continuous mastery of production systems and IS legacy.
NEW SERVICES · AI · CYBER Add new capabilities without losing control of the existing system. See our approach Controlled integration into existing systems.
IS MODERNIZATION Your existing systems must evolve without breaking operations. See our approach Progressive decoupling and controlled coexistence.
TRUST CONDITION MAINTENANCE (TCM) "It works" is no longer enough. See our approach Continuous supervision and lasting compliance.
Three intervention modes
We adapt to your starting point.
§01
Quick diagnostic
Frame fast and decide right
In a few weeks, we map risks, clarify the trajectory, and propose an executable plan.
§02
Dedicated team
Design and deliver with accountability
A senior team equipped to build, modernize, and integrate without disrupting your operations.
§03
Piloted TCM
Sustain reliability over time
RUN, security, quality, and compliance steered with explicit criteria and readable governance.
Our standard
Digital trust by design.
Protect
Security
Prevention, detection and response: from code to infrastructure.
Engage
Compliance
Regulatory framework treated as an architectural constraint.
Traceability
Signatures, commitments and transactions: tracked, timestamped and legally binding.
Our position
AI as a lever. Mastery as a condition.
AI experiments are multiplying. But deploying it in production in regulated environments is another matter.
You don't plug in an LLM without authentication, traceability and isolation in place.
Everything we build around it is software like any other. LLMOps, agents, workflows: same reviews, same processes, no shortcut just because it's labelled "AI".
Production references
Services delivered and kept running over time.
A few recent examples in production.
Finance & Automotive Credit
Digital Subscription Platform - BMW Financial Services France
Auto credit subscription for BMW Financial Services France (ACPR-regulated credit institution), designed to operate remotely and in dealership without breaking the customer journey. Identity verification, E-KYC, electronic signature and probative archiving combined in a single chain shared by client and advisor. Deployed across 295 BMW, MINI and Motorrad dealerships, live since 2020.
295 points of sale 300 files per day live since 2020
- Daily production operated: +300 files
- E-KYC, KYB and Open Banking integrated into the decision flow
- Interoperability with BMW business tools
Identity & Qualified Signature
jesignexpert.com e-signature platform for the accounting profession - ECMA
eIDAS electronic signature and sealing platform for the accounting profession, developed and maintained by REELIANT since 2018. Three signature levels coexist (simple, advanced with LCP nominal certificate, qualified via ANSSI-certified PVID), structured around multi-document, multi-signatory and multi-firm workflows.
5M signatures in 2025 1.6M seals in 2025 60 partner integrations
- 5M signatures and 1.6M seals operated in 2025
- Three electronic signature levels: simple, advanced (LCP), qualified (PVID)
- Interoperability with 60 partners via dedicated APIs
- Interoperability with jedeclare.com and jefacture.com
- Gold medal Monde du Chiffre 2025 (7th consecutive year)
Energy & Professional Networks
New Extranet and consumer matchmaking platform - Les Professionnels du Gaz
Full information system for the habitA+ association, which has run the PG (Professionnels du Gaz) certification programme for 15 years. Business tools for the labelling and monitoring of 10,600 certified companies, embedded e-learning, and a real-time matching platform between professionals and consumers. Programme members: GRDF, ENGIE, EDF, Butagaz, Antargaz and biomethane stakeholders.
10,600 certified companies business tools + e-learning real-time lead distribution
- 10,600 certified PG companies in scope
- Business tools: maintenance certificates, Visa Qualité sheet, correspondence tracking, compliance audits, project monitoring
- Level assessment and embedded e-learning
- Matching: offers published, ranked and tracked in real time
- Duty of care traced: every intervention documented and enforceable
Water & Public Services
Online Web & Mobile Agency - Veolia Eau
Veolia Eau's Web and Mobile online agencies, co-designed, developed and operated by REELIANT: national showcase site and customer area, declined across local brands on a shared CMS, integrated with core business systems and continuously maintained.
1M+ active users 15 local brand apps 4.5/5 store rating
- National app: 1M+ active users, rated 4.5/5 on stores
- 15 local brand apps published and maintained on stores
- Shared CMS: each brand publishes locally or nationally
Internal rule
Our final validation test is simple: would we be proud to use this tool ourselves? If the answer is no, we don't ship it.
What we publish
Field notes and analyses.
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When a System Becomes Hard to Evolve: The Telltale Signs
A fragile system is not always dramatic. It is often revealed by more ordinary signals: untouchable zones, vague estimates, poorly understood dependencies, and security or compliance work that keeps getting more expensive.
Read article -
OCR + Decision Engine: How Far Can You Automate Without Creating a Grey Area
Automating document processing is not just about reading a document. It also requires framing the rules, exceptions, human review, traceability, and the thresholds beyond which the system can truly make decisions.
Read article -
Modernizing a critical system without disruption: what to scope
Modernizing a critical information system rarely starts with a rewrite. It starts with reading actual data flows, risk zones, and the conditions for coexistence between old and new.
Read article
Regain control of your system, and keep it.
A first conversation lets us quickly assess your context, risk areas and the most relevant trajectory, without aggressive sales pitch.