Jean Bilong

Technical trainer and consultant, I deliver training sessions in training centers, engineering schools, and companies, targeting students, employees, and professionals undergoing career transitions. I design and lead customized training programs based on real-world use cases, delivered both on-site and remotely. In parallel, I design and develop high-value business applications, combining technological innovation with a solution-oriented approach. Sample engagements: - ORSYS, Paris La Défense (12/2022) : Java CI with Jenkins - Ynov, Paris (10/2020 - 05/2021) : advanced software development (Master 1 & 2), tutorials, coaching - AFPA, Paris (07/2020 - 08/2020): Java EE Personal Project - Motaki (2025) Role: Software Architect & Full-stack Developer Development of a bus reservation platform for the Gabon market. - Modular architecture using Spring Boot, Quarkus, Angular (monorepo), and OpenAPI - Service-ui middleware bridging the Angular frontend with Spring/Quarkus backends - Event-driven backend with Kafka (notifications, audit, payments) - Deployment with Docker, monitoring via Spring Boot Admin, CI/CD using GitHub Actions - Project developed in collaboration with a technical partner, targeting deployment on a VPS

Client : Belgian Federation of Notaries (Fednot) - Brussels Period : June 2021 – April 2025 Role : Full-stack Developer / Tech Lead Context : Agile, trilingual environment. Leading high-value strategic projects for Belgian notaries. Key Responsibilities : - Technical coordination and team mentoring (best practices, CI/CD, testing) - Requirements analysis, effort estimation, planning, and risk management - Design and development of business applications (e.g., "single provision account" in collaboration with the Ministry of Finance, LMS integration, batch processing) - Contribution to regulatory compliance projects (AML, centralized complaints management) - Facilitation of technical workshops, deployment documentation, and release coordination

Client : Vallourec Service Center - Valenciennes Mission period : May 2017 - April 2020 Role : Application Architect / Freelance Consultant Context : Joined Vallourec Service Center as an Application Architect to support and modernize the application ecosystem used across its production plants in France, Germany, Brazil, Nigeria, China, and Saudi Arabia. These applications were critical for real-time production monitoring and operational efficiency. Key Responsibilities : - Designed and developed new applications using modern technologies - Maintained and enhanced legacy systems to meet evolving functional needs - Led migration projects to reduce technical debt while ensuring service continuity - Authored detailed functional and technical specifications - Estimated project effort and budget for new features and applications - Investigated and resolved client issues in compliance with defined SLAs - Mentored junior team members to increase team autonomy and expertise - Actively participated in a DevOps-oriented, Agile Scrum team, collaborating with international stakeholders, including factory end-users and third-party service providers

As a freelance consultant at Webit Consulting, I led several projects for tech SMEs, industrial clients, and non-profit organizations, across diverse technical environments. Key clients and projects : - Veolia, Paris (2012) : Backend development for a water fleet management system; functional specs, UML, service and DAO layers, unit testing - ELITSYS, paris (2012) : Real-time video analysis to count people with LMS100 sensor; shape detection and edge segmentation in Java - Drupal Web Projects, Rouen(2012 - 2013) : Built association websites using Drupal CMS, created templates, logos, flyers, and responsive designs - ELITSYS, Paris (2014) : Developed a VoIP/video conferencing Android app for Raspberry Pi using Linphone, IMSDroid, and Android SDK

Freelance IT Trainer: Delivered training sessions in engineering schools, training centers, and companies. Designed and facilitated customized courses based on real-world case studies, both in-person and remotely. Training providers: Egilia, Demos, Logica Training, Performance Partner, Esic, Fitec, Elitsys Topics covered: Java (beginner to advanced), Spring, C, Android, MySQL administration Audience: Over 100 students, employees, and professionals in career transition