Freelancer profile translated to English.
Back to original languageAbout Xiaojie
Full Stack Developer with 5 years of experience, specializing in designing robust and secure applications using Java (Spring Boot, Micronaut), Vue.js (Quasar), React, REST APIs, etc. My technical expertise allows me to tackle complex challenges while ensuring rigorous system optimization. Available for freelance support on a fixed-price basis, with flexible hours including evenings and weekends.
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- IORGA GroupFull Stack Development EngineerFebruary 2023 - Today (3 years and 6 months)La Défense, FranceDesign, development, and maintenance of complex business applications for multi-sector clients. Involvement in the entire software lifecycle with strong expertise in business logic and large-scale data processing.Back-end & Databases Development:Architecture & API: Design and development of robust REST APIs (Java Spring Boot/Micronaut, C# .NET) for central information systems.Security & Middleware: Implementation of authentication mechanisms (JWT, CSRF).Development of middleware and HTTP filters for securing data flows and standardizing exception handling.Time Management (BPCE Project): Development of a comprehensive system for activity logging and tracking (Timesheets). Centralization of team information, configuration of different types of schedules, and precise management of access rights for each user.Data & Reporting: Aggregation and validation of large volumes of data ("Social Balance Sheet" Project). Design of import/export modules (CSV, Excel) and PDF document generation engines for regulatory reporting.Data & Automation: Contribution to data migration (MySQL to MariaDB), participation in the integration of third-party services (Microsoft Teams API), and implementation of Batch / CRON processes for automating data exchange flows.Front-end & Software Integration Development:UI Logic: Development of responsive web interfaces with Vue.js (Quasar Framework) or React. Implementation of complex interactive behaviors (Drag & Drop, media management).Securing Communications: Front-end/back-end security through the configuration of HTTP interceptors for automated JWT token management and header validation.State Management: Advanced use of Stores for centralized state management, two-way synchronization with APIs, and user preference persistence.
- PowerTech SystemsIndustrial IT Development EngineerOctober 2020 - October 2022 (2 years)Saint-Cyr-l'École, FranceDesign and development of software and hardware solutions for energy storage management systems.Software Development (C# / .NET):Control Tools: Design of a WinForms application dedicated to automating charge/discharge cycles and real-time data acquisition.Supervision Software: WPF development of modules for managing smart batteries, including the display of critical diagnostics.Communication & Protocols: Implementation of complex bidirectional communications via CAN Bus, RJ45, and serial links (Serial Port) for orchestrating data flows between batteries and PCs.Embedded Systems & Electronics:C Firmware: Programming microcontrollers (Microchip Environment) in C language to ensure connectivity and control of wireless components.Hardware Design: Participation in the development and integration of electronic boards with Wireless modules for industrialized products.
Recommendations
Be the first to recommend Xiaojie
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Specialization in Electronics and Industrial ITCY Cergy Paris University2022Spécialisation en électronique et Informatique Industrielle
- Bachelor's Degree in Electronics, Electrical Energy, AutomationCY Cergy Paris University2020Licence Électronique, Énergie Électrique, Automatique