Julien Constant

Analyst Developer

Strasbourg, France

I design, develop, and maintain secure and efficient applications using C# and .NET technologies within a highly regulated environment.

Experience

2025

now

CDI

IT Software Analyst Developer

@EforGroup

Strasbourg, Bas-Rhin, France - Hybrid

Summary

Working as an Analyst Developer for one of Efor’s clients in the banking sector, specializing in payment systems.

Responsibilities

Design, develop, and maintain applications in C# / .NET
Analyze and implement business and technical requirements
Ensure software quality, performance, and security
Collaborate with internal teams to deliver reliable and maintainable solutions
Provide technical support and continuous improvement on existing systems

Achievements

Created a parsing library for bank card data preparation files to standardize the data validation process.
Took over a parsing library for TLV (Tag-Length-Value) fields to easily track parsing errors.

.NET

Visual Studio

GitLab

2024

Internship

Full Stack Developer

@CGI

Toulouse, Haute-Garonne, France - On site

Summary

Collaborated on the development and maintenance of a website using the Agile methodology.

Responsibilities

Developed features and maintained functionality on a robust Opencell extension.

Achievements

Updated project dependencies that had remained unchanged since the project's inception in 2019, ensuring compatibility and improving security for 2024 standards.

React

Java

Postgres

Webservices

Docker

GitLab

2022

2023

Internship

Software Developer

@PetelServices

Chaumont, Haute-Marne, France - On site

Summary

Designed and maintained multiple software solutions for a the company.

Responsibilities

Developed features and maintained functionality across all of the company's software applications.

Achievements

Introduced Git for version control, improving collaboration and code management practices.
Implemented a CI/CD workflow to streamline the deployment of software updates within the company.

SQL

Git

GitHub

.NET