Freelancer profile translated to English.
Back to original languageAbout Guillaume
Technical Product Owner with 8+ years of experience in building and delivering complex digital products — from banking (BaaS, APIs, compliance) to hospitality and high-traffic e-commerce.
My differentiating asset: a developer background (Web, iOS, React Native) that allows me to secure architectural choices, challenge technical estimates, and streamline collaboration with development teams. I'm not a PO who 'places orders' — I understand what's happening under the hood.
What I bring concretely:
→ Business framing and structuring of complex needs into actionable specifications
→ Value-oriented prioritization and Agile delivery management
→ Building API-first products with regulatory compliance and scalability challenges
→ Transforming legacy processes into digital platforms (ML, SSO, IT integration)
Environments: B2B & B2C products, regulated contexts, legacy systems to transform, high-traffic platforms
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Bordeaux (up to 40km), Nantes (up to 50km), Lyon (up to 50km), Montpellier (up to 50km)
Experience
- Banque Delubac & CieTechnical Product OwnerBANKING AND INSURANCEMarch 2024 - March 2026 (2 years)Paris, FranceWithin a global banking digitalization program, I am in charge of the Banking-as-a-Service (BaaS) product — an API offering without a front-end — as well as intermediated distribution products.- Direct interface with technical teams using Agile methodology (refinement, trade-offs, securing architectural choices)- API-first product involving integration, security, regulatory compliance, and scalability challenges- Ability to challenge technical solutions thanks to my background- Supporting business teams in adopting new tools and processes- Active contribution to modernizing customer journeys and the product structure of a traditional bank
- Louvre Hotels GroupTechnical Product OwnerHOSPITALITYOctober 2022 - February 2024 (1 year and 4 months)Paris, FranceProduct Owner on a digital transformation project in the hospitality sector (group of 1,600+ hotels). End-to-end management: from business framing with operational teams to technical delivery, leveraging my developer background to secure the architecture and challenge estimates.- Transformation of a strategic process based on a complex shared Excel file into a secure internal platform (SSO) powered by a Machine Learning system (occupancy and revenue forecasting)- Detailed analysis of the existing system, extraction of implicit rules, and design of a structured product (access management, historization, data reliability)- Translation into clear specifications and management of technical teams with active contribution to choices thanks to my developer backgroundFollowing the success, design of a second system to translate strategic objectives (e.g., +10% via Booking) into operational targets per hotel and per KPI
- Groupe BPCETechnical Product OwnerBANKING AND INSURANCEJune 2020 - September 2022 (2 years and 3 months)Paris, FranceTechnical Product Owner on an application for professional banking advisors (Groupe BPCE / Natixis). Responsible for the product structuring of a multi-partner digital catalog, with strong business modeling and regulatory compliance challenges.- Centralized digital catalog for banking advisors, covering all products (banking and partners)- Analysis and formalization of complex business rules, definition of relationship entry workflows, and structuring of a value-oriented prioritized backlog- Mastery of technical impacts (access rights, data modeling, IT system interconnection) to propose robust and scalable solutions
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Education
- EngineerUniversité de Technologie de Belfort-Montbéliard2017Ingénieur