Louis LejailleSoftware Engineer

Full-stack and Software Engineer working on both modern web platforms and low-level system programming.

About

I'm an Artificial Intelligence and Software Engineer currently completing my final year at EPITECH. My work focuses on machine learning, reinforcement learning, intelligent systems, and software engineering. I enjoy designing simulation environments, developing learning algorithms, and building reliable software systems that combine research-driven approaches with real-world applications.

``Beyond AI, I have experience developing distributed systems, real-time networked applications, and full-stack software solutions using Python, C++, TypeScript, React, and Node.js. I'm particularly interested in autonomous systems, agentic AI, complex systems modeling, and the practical deployment of intelligent technologies.``

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Competencies

Expertise in modern development, systems programming and soft skills

Python

Scientific computing, machine learning, automation and backend development

C / C++

Performance-critical applications, networking systems and game development

System Architecture

Design of modular, scalable and maintainable software systems

Distributed Systems

Client-server architectures, synchronization and network-based applications

Networking (TCP/UDP)

Socket programming, real-time communication and multiplayer systems

Git / GitHub / GitLab

Version control, collaboration workflows and code review processes

Docker

Containerized development environments and deployment workflows

Linux

Development, deployment and system administration in Linux environments

Performance Optimization

Profiling, memory management and runtime optimization

Software Design

Clean architecture, maintainability and engineering best practices

Projects

Task Scheduling on Multi-Processor Architectures using Machine Learning

Research project investigating task scheduling on graph-structured multiprocessor architectures using machine learning and graph neural networks.

Machine LearningGNNResearchOptimizationAI

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Numerical and Analytical Study of 1D Wave Propagation

Numerical simulation and analytical study of wave propagation in continuous media under physical constraints.

SimulationScientific ComputingNumerical AnalysisPhysicsResearch

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Chess Graph Neural Network using deep reinforcement learning

Chess AI using deep reinforcement learning and graph neural networks to learn optimal strategies.

Chess AIReinforcement LearningGNNMachine LearningAI

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Satellite Orbital Simulation

Physics simulation of satellite trajectories and orbital transfers around Earth.

SimulationPhysicsC++

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Experience

Professional journey and work history

Teaching Assistant

EPITECH

09/2025 - Present

Provided technical and methodological guidance for individual and group projects, supporting students in understanding core programming concepts and software architecture while assisting in evaluating progress and ensuring adherence to best development practices.

Freelance Developer

EI LEJAILLE-LOUIS

04/2024 - Present

Develop full-stack web solutions for SMEs using React.js, Node.js, and MariaDB, designing modern, responsive, and user-friendly interfaces with Tailwind CSS and Next UI. Managed end-to-end project lifecycles, including requirements gathering, architecture design, deployment, and maintenance, while optimizing application performance and security to ensure scalability for growing user bases.

Web Developer Intern

Yaakadev

02/2024 - 06/2024

Developed web applications with Angular (front-end) and NestJS (back-end) to meet client specifications, designing, implementing, and maintaining MongoDB databases for efficient, secure, and scalable data management. Collaborated in an agile team, delivering production-ready features on time.

Mobile Developer Intern

Enginest

09/2023 - 01/2024

Developed a mobile application using React Native, including UI implementation, state management, and API integration, ensuring cross-platform functionality for iOS and Android. Collaborated with designers and back-end developers to deliver a fully functional MVP on schedule.

Web Developer Intern

PwC Luxembourg

07/2022 - 12/2022

Built a web application with React.js to improve internal company processes and digital workflows, designing and delivering SQL training courses for onboarding new employees. Contributed to enhancements of internal tools, increasing team productivity and reducing manual errors while supporting data management and reporting processes.

Let's Work Together

I'm always interested in hearing about new projects and opportunities. Feel free to reach out!