rhanb helps SaaS vendors and startups, from architecture design to production: reliability, compliance, artificial intelligence.
InterFast 
Notae AI 
Stuart 
Lido 
SLB 
Matooma Five complementary engineering domains, from system architecture to production operations.
DDD architecture across 60+ domain libraries for a construction ERP SaaS.
Full implementation of the NF525 standard in a multi-tenant SaaS ERP.
LegalTech platform with automated generation of legal reports.
Public API deployed across 5 European markets with K6 load testing.
Cloud infrastructure for 6 microservices with auto-scaling.
Every engagement follows a documented, traceable method, from design to continuous delivery.
Every technical topic goes through a design document before implementation: data modelling diagrams, sequence diagrams for flows, RFCs for complex topics, mockups for interfaces. This traceability of engineering decisions streamlines reviews and decision-making.
We structure code around the client's business concepts, not around technical tools. DDD / hexagonal architecture isolates business logic from technical dependencies and lets each module evolve independently.
Unit tests, integration tests, concurrency and load tests. Every critical component is validated under representative conditions before going to production.
Continuous deployment through CI/CD, staging environments, systematic code reviews. Every change is traceable, reversible and shipped incrementally.
Three representative engagements that reflect our scope of work with SaaS vendors and startups.
All-in-one SaaS platform for construction SMBs (HVAC).
Bring NF525 compliance into a multi-tenant cloud ERP without degrading the user experience.
Design of the dual JET chain, cryptographic sealing, fiscal archiving, multi-channel e-signature, DDD refactor.
LegalTech startup using generative AI for legal automation.
Design reliable agentic workflows for the generation of legal documents.
AI agentic architecture, dedicated MCP server, report-generation pipelines, Bun.js monorepo migration, CI/CD.
Last-mile delivery platform operating across 5 European markets.
Design a robust, high-performance public API for high-volume B2B integrations.
Node.js / TypeScript API architecture on Kubernetes, K6 performance testing, technical team leadership.
rhanb is a software engineering and artificial intelligence consultancy founded in Paris in 2026. It works with SaaS vendors, startups and technology SMBs on architecture design, advanced technical component development, and AI integration into existing products.
Founder & Principal engineer
A software engineer with 8+ years of experience, Jean-Baptiste has scaled SaaS platforms, designed AI agentic workflows and led engineering teams across 5 European markets.
rhanb filed an application in 2026 for approval under the French Innovation Tax Credit (CII) with the Ministry of Higher Education and Research. Once granted, this approval will certify rhanb's ability to carry out the design and development of innovative products on behalf of its clients.
Discuss your innovation project →Architecture design, advanced technical component development, AI integration. Let's discuss your needs.