About Guillaume
French
Native or bilingual
English
Fluent
Experience
- IndépendantProperty Manager & SCIREAL ESTATEJune 2023 - Today (3 years)Paris, FranceProject management of real estate assets in an SCI (7 properties) following an inheritance.
- Asset strategy, investment arbitrage, rental management
- Renovation €150k: needs definition, contractor selection, schedule & budget monitoring
- Multi-stakeholder coordination (notaries, legal, tax)
- Orange BusinessProduct Owner & Business AnalystTELECOMMUNICATIONSJune 2022 - June 2023 (1 year)Rennes, FranceDual role on 2 parallel products: IT onboarding automation (+3000 employees) and critical application server migration (7 IS).
- Scope & backlog: product vision, 10-20 US/sprint, acceptance criteria, arbitration against Microsoft API constraints
- Nearshore squad management (5 devs Morocco): Scrum rituals, prioritization, velocity stabilized at 36 SP from sprint 3
- Autonomous QA testing: functional validation of each increment, < 1 bug/sprint, 0 blockers post-deployment
- Multi-IS migration: mapping of 7 IS, interface contracts, Ansible/GitLab CI industrialization, pentest monitoring (1 critical + 2 major fixed)
Results: onboarding 1h → 15 min — 2 deployments in 9 months — switchover without perceived interruptionStack: Jira, Confluence, XRay, Figma, API REST, SQL, Ansible, GitLab CI/CD, SSH - EDF SEIBusiness Analyst QA & DataENERGY AND UTILITIESJune 2020 - April 2022 (1 year and 10 months)92400 Courbevoie, FranceMaintenance in Operational Condition (MCO) and evolution of the eFluid ERP across 5 island centers (+1 million customers, +3,000 agents). Field interventions, billing, sensitive customer data.
- Daily MCO: pre-operational audit 1h30, SQL diagnostics, correction of blocking anomalies
- End-to-End Testing: ~100 XRay test cases (database still in use), V14 version upgrade testing over 1 year
- Data & Investigation: SQL diagnostics for geographical anomalies (~3000 entries), reference data reliability, detection of major account billing anomaly → catch-up campaign
- Linky self-production regulatory evolution: scoping, testing, business training — +1,000 PDLs impacted
Results: ERP availability ~99% over 18 months — V14 deployed without incident — ENEDIS anomaly resolved in 3 monthsStack: Jira, XRay, Confluence, SQL, eFluid, Saturne Mobile, SSH/SFTP, C#
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Education
- General Engineer | Engineer-ManagerÉcole supérieure d'ingénieurs Léonard-de-Vinci2020Nouvelles Energies
Certifications
- ISTQB - Certified Tester Foundation LevelORSYS - ISTQB®2021