Hello there! 👋

Julien Montagut

Making computers do cool things, fast. âš¡

Julien Montagut

About Me

Senior software engineer with a taste for performance, beautiful code, and distributed systems. Currently exploring Rust, tinkering with CLI tools, and occasionally debating the perfect keyboard layout.

With over 12 years of experience across fintech and AR/VR, I'm passionate about building complex systems and creating tools that make developers' lives easier.

Let's build something awesome together! ✨

Skills & Expertise

Languages

  • Rust

    Systems programming & CLI tools

  • C#

    Backend & Cloud Native

Frameworks

  • .NET

    Enterprise & Microservices

Tools

  • Nix

    System Configuration

  • Neovim

    Text Editing & IDE

DevOps

  • Docker

    Containerization

  • Kubernetes

    Container Orchestration

Work Experience

Senior Backend Developer

Betclic

2022-2023

Bordeaux, France 🇫🇷

Led performance optimization initiatives for the sports betting platform:

  • Reduced end-to-end system latency from 8s to 2s
  • Developed microservices using C# .NET 7/8
  • Implemented distributed architecture with MongoDB, Kafka, Redis, and gRPC
  • Managed deployments using Jenkins and Terraform
  • Set up monitoring and logging with Datadog and AWS
C# .NET MongoDB Kafka Redis gRPC AWS

Senior Software Engineer

Dekra

2021-2022

Bordeaux, France 🇫🇷

Architected and developed the new vehicle inspection platform:

  • Led backend development using .NET and C#
  • Designed distributed architecture with MongoDB and Azure Service Bus
  • Implemented performance testing suite using k6
  • Promoted TDD and continuous delivery practices
  • Collaborated in an Agile/SAFe environment
C# .NET MongoDB Azure k6 Docker

Lead Developer

CDiscount

2020-2021

Bordeaux, France 🇫🇷

Led the development of a live-shopping platform:

  • Managed video integration on product pages with performance optimization
  • Implemented authentication using Keycloak
  • Led technical team and provided mentorship
  • Conducted performance testing with Gatling
  • Facilitated Agile ceremonies and technical planning
C# .NET Keycloak Gatling Azure Redis

Senior Software Engineer

WIIDII

2019-2020

Bordeaux, France 🇫🇷

Architected and maintained microservices platform:

  • Managed 100+ microservices using .NET Core and C#
  • Worked with MongoDB, RabbitMQ, and REST APIs
  • Orchestrated containers with Apache Mesos
  • Implemented monitoring using ELK and Prometheus/Grafana
  • Mentored new developers and promoted DDD practices
C# .NET Core MongoDB RabbitMQ Mesos ELK

CTO

Clezer

2017-2019

Bordeaux, France 🇫🇷

Led technical vision for a fintech startup:

  • Developed MVP for group payment card platform
  • Built web app with React and mobile app with React Native
  • Created backend services using TypeScript and NodeJS
  • Managed infrastructure on Google Cloud Platform
  • Led development team and handled technical recruitment
React React Native TypeScript Node.js GCP MongoDB

Technical Lead

RE'FLEKT

2015-2017

Munich, Germany 🇩🇪

Led AR/VR development for industry clients:

  • Created AR applications for clients like Audi, Porsche, BMW
  • Developed iOS applications in Objective-C
  • Built AR applications using Unity Engine and C#
  • Managed international development team
  • Conducted technical workshops in German
Unity C# Objective-C iOS AR/VR OpenGL

Featured Projects

sourcerer

A CLI tool to manage multiple repositories at once.

RustCLIGit

dotfiles

Personal dotfiles for macOS, featuring a comprehensive Nix-based system configuration. Includes development environment setup and custom configurations.

NixShellmacOS

Explore More Projects

View All

Discover more of my projects, including experiments, tools, and open-source contributions. From system utilities to web applications, explore the complete collection.

🚀 Click to explore the full repository

Get In Touch

I'm always interested in hearing about new opportunities, whether it's a job opportunity, a collaboration, or just a friendly chat about technology.

Say Hello