Logo
Portrait of Rivo Rahajason

Hello! I'm Rivo Rahajason

A .NET and Angular Developer who

Ships things that actually work…

Because a system nobody can maintain isn't really shipped.

I'm a Full-Stack Developer, Software Engineer, and Software Architect

Currently, I'm a Lead Full-Stack Developer atTF1

An engineering graduate with over a decade of experience building full-stack systems in .NET, Angular, and React — from healthcare SaaS to newsroom tooling to fine-tuned language models. I care about clean architecture, reliable systems, and shipping software that lasts.

Work Experience

TF1

Lead Full-Stack Developer

TF1 · 2019 — Present

Leading full-stack delivery across newsroom and visitor-management platforms for France's leading TV network, including a migration from .NET Framework to .NET 10.

  • .NET 10
  • Angular 21
  • AWS
  • Azure
  • PostgreSQL
LLM

Maintainer, Mono Lingual LLM

Open-source · 2024 — Present

Building datasets and fine-tuning notebooks (LoRA, QLoRA) for language models, and deploying quantized, optimized models on Hugging Face.

  • Python
  • LoRA / QLoRA
  • Hugging Face
  • Unsloth
L&Y

Co-founder & DevOps

Latro.link / yuniql · 2020 — 2025

Co-founded and built SaaS products for the medical sector, defining a microservices architecture and automating deployments to reach 99.9% uptime.

  • React
  • TypeScript
  • Tailwind CSS
  • GitHub Actions
PXY

Full-Stack Developer

Proximity IO · 2016 — 2019

Delivered client web applications for Smart, Mercedes-Benz, and P&G — from REST APIs to CMS integrations — across a series of Kanban-run projects.

  • C#
  • ASP.NET
  • React
  • SQL Server

I care about clean architecture, mentoring engineers, and shipping software that scales.

  • .NET 10
  • Angular
  • React
  • TypeScript
  • AWS
  • Azure
  • PostgreSQL
  • LLM & RAG
  • Docker
  • TDD

Featured Project

Dalet Reporter — TF1

Current · Lead Full-Stack Developer

Leading the migration of TF1's Dalet Data Warehouse enrichment service from .NET Framework 4.7 to .NET 10 — establishing team coding conventions, automating CI/CD, and wiring up full observability through Datadog, while running technical retrospectives, upskilling the engineering team, and keeping an eye on emerging technologies.

  • .NET 10
  • MS SQL Server
  • Datadog
  • Azure DevOps
  • CI/CD
  • SOLID
  • Clean Code

Blog

Notes & Tutorials

Write-ups on the systems, tools, and infrastructure I work with day to day.

Diagram of an Application Load Balancer routing traffic across two Availability Zones to a target group

Infrastructure

Provisioning a Highly Available AWS Load Balancer with Terraform

A practical walkthrough of defining an Application Load Balancer, target groups, and listener rules as code — and the pitfalls that trip up most first attempts.

8 min read
Read article →