MugiwarAI

Sylvain Jouglard

Senior Software Engineer — 15+ Years in Software Development — Craftsmanship and AI

France

About

With over 15 years' experience in software development, I convert needs into robust, reliable solutions. I apply software development best practices — TDD, DDD, coherent architecture choices (modular monolith or microservices), and cloud technologies.

I use Scrum and NoEstimate methods for rapid implementation and feedback loops. I bring DevOps expertise (Kubernetes, GitOps, AWS, Azure, CI/CD) to ensure applications behave predictably in production.

I also focus on AI industrialization and smart use of AI tools (Claude Code, ChatGPT) for augmented coding workflows.

Experience

Senior Software Engineer

Intrasense Jun 2024 — Present France
  • Refactored the solution using hexagonal architecture for improved robustness
  • Created features: filtering, routing, orchestration of medical studies
  • Scaled AI processing with Kubernetes and KEDA
  • Set up telemetry and established API guidelines
  • Established contracts between services using a design-first approach

Software Development Engineer

Cdiscount — Octopia May 2022 — Jun 2024 Bordeaux, France
  • Built and maintained microservices for the Octopia project (Marketplace as a Service)
  • Order state management (Processing, Accepted, Shipped...)
  • Created discussion system between customers, sellers, and sales channels
  • Order cancellation management, invoice import, order export
  • Tech stack: .NET, C#, JavaScript, Kafka, MongoDB with TDD, DDD, Clean Architecture, Scrum

Senior Fullstack Developer

Harvard Gestion Jan 2021 — May 2022 Perpignan, France
  • Migrated legacy VB application to a web-based .NET C# accounting suite
  • Chose and implemented Clean Architecture
  • TDD for all feature development
  • Set up Azure DevOps, Entity Framework (Oracle, SQL Server), and CI pipelines
  • Daily use of LINQ for data transformation; frequent client feedback loops

Senior .NET Fullstack Developer

Puissance I — Harvard Gestion Mar 2019 — Jan 2021 Perpignan, France
  • Developed TMS logistics software for supermarkets from detailed functional specifications
  • C# .NET desktop application (WinForm), WebServices, DevExpress
  • Developed accounting software with .NET, MVC, DevExpress, JavaScript

Freelance Fullstack Developer

NOOR Jan 2013 — Oct 2018 Paris, France
  • Multi-language freelance developer for large accounts: IBM, Kantar, Mondelez, Alcatel, Leo Pharma, Gefco
  • Enterprise work: Java, C#, PHP
  • Web agency work: Ruby on Rails, PHP, WordPress

Ruby on Rails Fullstack Developer

France Loisirs Oct 2010 — Oct 2012 Paris, France
  • Developed quintonic.fr — a friendly social platform for seniors
  • Full agility: Scrum and Extreme Programming with one-week sprints and mandatory pair programming
  • CI with Jenkins, cloud deployment with Heroku
  • TDD and BDD with Cucumber; Gherkin written collaboratively with the Product Owner

Web Developer Apprenticeship

Imaginaty Sep 2007 — May 2010 Suresnes, France
  • PHP application development (3 days per week apprenticeship)
  • Built multisite CMS systems

Education

Engineering Degree

Ingésup (INSIA) 2007 — 2010

BTS ARLE

Greta la Défense Sep 2004 — Jun 2006

Skills

Cloud & DevOps

AWS Azure Docker Kubernetes Heroku DevOps CI/CD GitOps

Languages

C# .NET Java PHP Python C++ JavaScript Ruby on Rails

Architecture

Clean Architecture Microservices DDD MVC Event-Driven Architecture UML Merise Algorithms

Practices

TDD BDD Software Craftsmanship Scrum Extreme Programming NoEstimate AI

Databases

PostgreSQL MongoDB Oracle Database Microsoft SQL Server

Technologies

Apache Kafka RabbitMQ ASP.NET MVC DevExpress Entity Framework