Mon Chasseur Immo

Back-end development at Mon Chasseur Immo, France’s leading property-hunting company (July–December 2023, then continued freelance). What started as a CRM project grew into back-end work on the company’s core applications.

The product I worked on behind the scenes: property search and hunting.

Lead typing

The first project reworked how leads are classified in the HubSpot CRM. HubSpot’s built-in campaign data was hard to exploit through its API, so I created a custom “Campagne MCI” object that classifies leads from their UTM parameters, campaign name, group and tags. This gave the team full control over each lead’s provenance (G1 contacts already familiar with the brand vs. G2 prospects). Tuning the campaign setup and SEO attribution pushed classification precision to ~95%.

Release historization

The second project automated how the team tracks its releases. Every development task maps to a Jira ticket and a dedicated GitHub branch; merging to main cuts a release. I built an automated history of these deployments: rather than maintaining a separate database, the system uses Jira’s release management directly, so deploying a version records it automatically and flags anomalies such as missed deliveries or mismatches between tickets and branches.

Hunter pages

The third project automated the personal web pages of the property hunters. I picked up two tickets left by a departing colleague, originally built on Azure Functions, and refactored them into the company’s Core API (.NET / C#), restructured around Domain-Driven Design to fit the team’s conventions. The result synchronises the database with the hunters: when a hunter joins, a page is created automatically at their name and removed when they leave, covering ~170 hunters, with descriptions they can edit themselves.

An automatically generated hunter page.

Ways of working

The team worked in Agile / Scrum (I also attended the Agile Tour Montpellier). The collaboration continued freelance after the internship ended.

The full internship report is embedded below.

My role

Back-end developer.

Tech

HubSpot · Azure Functions · .NET / C# (Core API) · Domain-Driven Design · Jira · GitHub