# Mission-Critical Custom Systems Engineering — Mission-Critical Software & APIs

> Design and delivery of tailored enterprise software architectures engineered to endure, resist operational failures, and scale alongside your business.

### Métriques Clés
- **Technical Debt**: 0% (Strict engineering standards)
- **Test Coverage**: > 90% (Unit, integration & E2E)
- **Deploy Cadence**: Daily (Automated CI/CD pipelines)

### Piliers Techniques
- **Robust Modular Architecture**: Domain-Driven Design (DDD) ensuring component modularity, maintainability, and clean boundaries.
- **Legacy Ecosystem Integration**: Seamless interoperability with legacy infrastructure to protect existing technology investments.
- **Knowledge Transfer & Enablement**: In-depth documentation, engineering workshops, and structured handoffs for total client autonomy.

### Spécifications d'Ingénierie
- **Architecture Pattern**: Hexagonal architecture (ports and adapters) decoupling core domain rules from external dependencies
- **Throughput & Latency**: Engineered for unpredictable load spikes with automated graceful degradation routines
- **Security & Cryptography**: Systematic peer review processes and automated static/dynamic security testing (SAST/DAST)
- **Standards & Compliance**: OWASP Top 10 code standards and alignment with modern software engineering best practices
- **Deployment Models**: OCI-compliant lightweight containers portable across any cloud or Kubernetes environment
- **Protocols & Interfaces**: OpenAPI-documented REST APIs, high-throughput gRPC services, and asynchronous message brokers