Fabrice MARIE-SAINTE

MigaTech is an independent advisory and delivery practice focused on observability, service reliability and performance in complex enterprise environments. I work with IT leaders, architects, production teams and Platform/SRE organizations to improve visibility, reduce operational risk and turn technical telemetry into actionable decisions. Selected areas of intervention: • Define observability strategies, roadmaps and target architectures • Audit and rationalize monitoring, APM and logging ecosystems • Design and industrialize observability platforms across on-premise, hybrid and cloud environments • Investigate complex performance issues and recurring incidents • Define service health indicators, SLIs/SLOs, dashboards and governance models • Integrate OpenTelemetry and modern observability toolchains • Improve incident, problem and continuous-improvement practices • Design observability approaches for AI/LLM and agentic applications • Facilitate executive workshops, architecture reviews and technical enablement Typical outcomes include stronger service visibility, faster diagnosis, fewer operational blind spots, better prioritization and clearer alignment between engineering signals and business impact. My approach is tool-aware but not tool-led: the objective is not to deploy more technology, but to build an observability capability that people can actually use.

Delivered long-term consulting engagements focused on application performance, observability and service reliability across complex enterprise and public-sector environments. Key areas of responsibility included: • Designing and modernizing monitoring and APM architectures • Investigating performance degradation and complex production incidents • Analyzing application, infrastructure, database and JVM performance • Building operational, management and service-level dashboards • Defining performance, capacity and reliability indicators • Supporting incident reviews, root cause analysis and continuous improvement • Advising technical teams and decision-makers on operational risks and priorities Worked closely with infrastructure, production, application, architecture and management teams to connect technical findings with service quality, user experience and business impact.

Designed and delivered IT service management, integration and hybrid cloud solutions for enterprise and public-sector clients. My responsibilities included solution architecture, technical design, implementation, integration, troubleshooting, customer workshops and knowledge transfer. I worked across IBM service management technologies, including Maximo, SmartCloud Control Desk, Tivoli and related integration components. Key contributions included: • Translating customer requirements into robust technical architectures • Designing ITSM and service management operating models • Implementing and integrating enterprise service management platforms • Supporting incident, problem and service-request management processes • Advising customers on architecture, governance and operational improvement • Coordinating technical stakeholders in complex delivery environments This role strengthened my ability to bridge architecture, operational constraints, customer expectations and business priorities.