Position: Senior Backend Developer
Company: UPPeople
Experience required: 5y
English level: upper

US-based company (300+ employees) in the space of customer acquisition marketing.

Requirements
Main things to work on - adding browser features to a Mozilla-based web browser.  
Code is primarily C++ and Python scripts. 

Some features include:
Modifying the browser telemetry system to collect business analytics;
Security features around using a traffic proxy (stealth mode);
DRM related feature work to enable the playing of DRM-protected content.

Must have:
Desktop software experience, compiling for Windows and Mac;
C++ and Python experience;
Ability to work autonomously;
Able to take an unfamiliar code base, reason about how it works, and determine how to build and deploy it.