Freelancer profile translated to English.

Description

Tech Lead .NET specialized in ecosystem modernization and application performance improvement.

I support teams in designing reliable, secure, and scalable solutions: distributed architectures (Event-Driven, gRPC), API integration, data optimization, and resilience (Polly, Redis, Outbox).

Experienced in complex environments (finance, automotive, retail), I cover the entire lifecycle: scoping, architecture, development, performance, and developer support.

Objective: reduce technical debt, stabilize platforms, and accelerate delivery.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 20km)

Société Générale - CIB
Tech Lead
BANKING AND INSURANCE
September 2025 - Today (11 months)
Paris, France
XOne is a multi-product trading application focused on Forex, covering Fx Cash (Spot) and Fx Option.
The platform relies on an event-driven microservices architecture to decouple domains (pricing, orders) and ensure scalability and traceability.
Participate in architectural decisions (scalability, resilience, security, observability, cloud readiness) in collaboration with Front-to-Back architecture managers.
Ensure the quality of the API and event schemas repository: versioning, backward/forward compatibility, deprecation policy, and event governance.
Lead the cross-asset release process: planning, synchronization, integration, cross-domain dependency management.
Define and industrialize deployment strategies (feature flags, factories, sanity checks, progressive rollouts) and robust rollback plans.
Produce and publish global release notes including impacts, compatibility mapping, DB migrations (Oracle/Sybase), and associated risks.
Conduct Go/NoGo decisions based on objective criteria: CI/CD, NRT, monitoring, stability KPIs.
Supervise delivery quality: UT/NRT, performance, fix validation, pre-production readiness.
Prioritize performance initiatives, technical debt, security, SLA/SLO, and overall reliability.
Lead the progressive migration of .NET Framework 4.8 services to .NET 8/10 (hardening, refactoring, observability, API compatibility).
Refactor and modernize legacy services to reduce coupling, improve throughput, latency, and maintainability.
Industrialize multi-target builds under Jenkins (Framework/Core), automated validation, quality gates.
Mentor code reviews (Gerrit), standardize code conventions, branching model, commit policy, architecture patterns.
Jenkins .NET Grafana Release Management gRPC
Crédit Agricole Assurances
Tech Lead
BANKING AND INSURANCE
October 2023 - November 2025 (2 years and 1 month)
Paris, France
Application serving as an interface between the user and telephony on one hand, and actions (emails and tasks) on the other. The multimedia banner is intended for different user groups to manage the entire lifecycle of a claim, organized by area of interest.
Identified needs, technical constraints, and migration requirements in collaboration with all stakeholders (Business Analysts, technical teams, operations).
Developed a structured migration plan, divided into phases, integrating impact analysis, risks, rollback strategies, and validation criteria.
Designed and developed the project's technical foundation under .NET 6, modernizing the existing architecture (WPF, WCF, REST) and preparing the application for cloud-ready execution.
Modernized the user interface to offer a smoother, more responsive experience compliant with modern UI/UX standards.
Implemented new front-end Angular features using components, services, routing, and performance optimization.
Ensured compatibility and interoperability between the Angular front-end and the .NET 6 back-end through robust, versioned, and documented API contracts.
Identified migration risks (interoperability, performance, technical debt) and defined mitigation strategies to ensure a progressive and secure transition.
Wrote and maintained YAML deployment files (Deployments, Services, Ingress, ConfigMaps, Secrets) for industrial management of the application in Kubernetes.
Leveraged new .NET 6 capabilities to optimize performance (GC, threading, async, cold start reduction, minimal APIs).
Dockerized the .NET application to allow its deployment in cloud-native and isolated environments.
Collaborated closely with DevOps/Infra teams to secure pipelines, validate network configuration, optimize scaling, and integrate the solution into the Cloud ecosystem.
Docker .NET Genesys Azure DevOps Parallelism and Multithreading
BNPSS
Tech Lead
BANKING AND INSURANCE
November 2022 - October 2023 (11 months)
Pantin, France
Innova is a modular solution designed for the financial sector. It enables the creation and automation of end-to-end business processes for custodian banks, asset managers, or fund administrators. This AI-powered solution supports companies with complete automation of investment compliance checks through semantic analysis and automatic detection of investment rules.
Led the architecture due diligence (functional, non-functional, scalability, security).
Assessed business needs and identified technical and operational risks.
Qualified source code delivered by the publisher in terms of performance, security, maintainability, and robustness.
Decided on technological directions: framework upgrades, structural improvements, strategic refactoring.
Participated in the transition committee between the software publisher and BP2S.
Collaborated with BNPP architects to define environment constraints, CI/CD, and framework packaging.
Drafted technical articles for the Publisher/BP2S contract to frame project commitments.
Recruited developers and managed the technical team.
Contributed to setting up the CI/CD chain in collaboration with the DevOps team.
Installed and configured technical components across all environments.
Produced installation, deployment, and operation guidelines for developers and BP2S production.
Prepared the definition of the target front-end architecture (modular structure, lazy loading, state management, routing).
Validated front-end security constraints (XSS, token security, header configuration).
Defined CI/CD pipelines for Angular applications (build, tests, lint, packaging).
Defined OAuth2 authentication/authorization strategies.
.NET Cloud Azure IT Architecture Angular XSS