Julien Montagut

I build small sharp tools and the occasional big system. I like compilers, command lines, latency budgets, and the moment a script you wrote at 1 a.m. still works two years later. Currently sharpening the edges of a few side projects you'll find below.

Role
Software engineer · tinkerer · long-distance optimizer
Location
Bordeaux, FR · UTC+1
Status
Available · selectively
02 $ gh stats --user julienmontagut

Open source

last sync · live
contributions / 365d 1,825 commits
less more longest streak 42d
repositories
2+
public on GitHub
stars earned
0
across featured projects
years writing code
12+
since 2013
prs merged
213
to upstream OSS
04 $ cat ~/.config/stack.toml

Tools of the trade

updated quarterly
languages
  • C# daily driver
  • Rust for sharp tools
  • TypeScript for the web
  • Lua neovim & glue
  • Bash everywhere
  • Python scripts
editor & shell
  • Neovim twelve years in
  • zsh with prezto
  • tmux always
  • kitty since 2019
  • fzf muscle memory
  • ripgrep before grep
infrastructure
  • Linux Debian/NixOS
  • MongoDB default DB
  • Kubernetes for the fleet
  • Docker for the rest
  • Nix reproducible everything
  • Tailscale glue between boxes
for thinking
  • Obsidian wiki of brain
  • pen & paper shockingly often
  • Anki spaced repetition
  • walks the real debugger
05 $ cat ~/cv.txt

Work history

6 roles · 2015 → 2023

a decade-plus of distributed systems, performance work, and shipping products to production.

[01]
Senior Backend Developer @ Betclic

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#.NETMongoDBKafkaRedisgRPCAWS
2022 — 2023
Bordeaux, FR
[02]
Senior Software Engineer @ Dekra

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#.NETMongoDBAzurek6Docker
2021 — 2022
Bordeaux, FR
[03]
Lead Developer @ CDiscount

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#.NETKeycloakGatlingAzureRedis
2020 — 2021
Bordeaux, FR
[04]
Senior Software Engineer @ WIIDII

Architected and maintained a 100+ microservice 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 CoreMongoDBRabbitMQMesosELK
2019 — 2020
Bordeaux, FR
[05]
CTO @ Clezer

Led technical vision for a fintech startup building a group payment card platform.

  • 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
ReactReact NativeTypeScriptNode.jsGCPMongoDB
2017 — 2019
Bordeaux, FR
[06]
Technical Lead @ RE'FLEKT

Led AR/VR development for industry clients including Audi, Porsche and BMW.

  • 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
UnityC#Objective-CiOSAR/VROpenGL
2015 — 2017
Munich, DE
06 $ echo $REACHABLE_VIA

Get in touch

response time · ~24h on weekdays

I read every message. Be specific and I'll be specific back. The fastest path is email; the most fun path is the terminal below.

this site is a calm corner of the internet. no trackers, no analytics, no popups.

~/julienmontagut.com — zshpress K to focus · for history
// shell · julienmontagut.com · v1.4.2 · type `help` for a list of commands
BASALT // V1.0 · © 2026 Julien Montagut · source
built by hand · Bordeaux, FR