Accord-cadre de services de développement, d’ingénierie et d’expertise logicielle

The contract timeline is as follows:

The total duration of the framework agreement, including renewals, cannot exceed four years. The initial duration of the framework agreement is 1 year, and it is renewable three times for an additional year each time. The decision not to renew must be communicated in writing to the contractor at least three months before the end of each period.

Key phases mentioned include:

• Phase 1 - Selection phase: During this phase, participation requests are submitted and analyzed.
• Phase 2 - Offer submission: Selected candidates are invited to submit an initial offer.

The deadline for submitting participation requests is November 16, 2026, at 12 p.m.

Explicit contract start and end dates are not stated in the documents.

The core scope of work for this tender primarily involves the execution of development, engineering, and software expertise services to support the complete rewriting and modernization of Cohabsys's business software, which is used by public service housing companies (SLSP) in Wallonia and Brussels, Belgium.

The primary requirement is for continuous frontend and backend development services provided by two distinct, pre-identified developers who can be mobilized simultaneously.

Supplementary services, engaged as needed, include:

• Ad-hoc senior expertise in software architecture, PostgreSQL database engineering, and DevOps/CI-CD.
• Audit missions, which will come with defined deliverables.

The tender encompasses a range of specific activities:

• Analysis of needs and the application environment.
• Frontend and backend development.
• Design, evolution, and integration of APIs.
• Database design, migration, administration, and optimization.
• Application containerization and industrialization.
• Implementation and maintenance of continuous integration and deployment chains.
• Code review and enhancement of software quality.
• Design and execution of automated tests.
• Application security and remediation of vulnerabilities.
• Analysis and resolution of technical incidents.
• Technical and operational documentation.
• Knowledge transfer and technical support to Cohabsys teams for increased autonomy.
• Provision of technical expertise for the rewriting and evolution of the software.
• Occasional consulting and expertise missions related to artificial intelligence and language models to guide Cohabsys's decisions on feasibility, architecture, implementation, security, data protection, costs, and operational constraints.
• Any other service relevant to the framework agreement's objective.

Ad-hoc technical audits specifically cover software architecture, code, databases, security, and continuous integration/deployment chains, providing a report and prioritized recommendations. For all ad-hoc missions or audits, the expected deliverables and their acceptance criteria will be detailed in a validated planning or intervention agenda.