Senior Backend Engineer — Scalable Go APIs & Cloud

Madbox; Paris; On-site; EUR 90,000 - 130,000; Full time

Job summary

Madbox, a fast-growing mobile gaming company in Paris, is hiring a Senior Back End Developer to design and scale public-facing APIs in Go on GCP while maintaining internal tooling in TypeScript/Node.js on AWS. You will impact millions of players and work across Game Production, Data, and Central Game Tech teams.

The role emphasizes performance, reliability, and CI/CD excellence with Terraform and GitHub Actions, plus observability with Datadog.

Qualifications

• 5+ years of backend development with Go and TypeScript/Node.js.
• Strong MongoDB experience as a primary database.
• Designing and operating scalable microservices and RESTful APIs.
• Cloud infrastructure experience at scale; GCP preferred, AWS valuable.
• CI/CD practices familiarity with Terraform and GitHub Actions or Jenkins.
• Observability experience with Datadog.
• Excellent English communication in an international team.

Responsibilities

• Design, build, and scale public-facing APIs in Go on GCP.
• Ensure backend reliability with testing and safe rollout processes.
• Monitor and optimize backend systems using Datadog.
• Collaborate with game teams, data engineers, and product managers.
• Improve CI/CD pipelines with Terraform and GitHub Actions; Jenkins pipelines.
• Support internal tools in TypeScript/Node.js, hosted on AWS.

Skills

Go

TypeScript/Node.js

MongoDB

RESTful APIs

Microservices

CI/CD

GitHub Actions

Terraform

Jenkins

Datadog

GCP

AWS

English communication

React (internal tools)

Tools

Terraform

GitHub Actions

Jenkins

AWS

GCP

React

Datadog

Job description

Madbox, a fast-growing mobile gaming company in Paris, is hiring a Senior Back End Developer to design and scale public-facing APIs in Go on GCP while maintaining internal tooling in TypeScript/Node.js on AWS. You will impact millions of players and work across Game Production, Data, and Central Game Tech teams.

The role emphasizes performance, reliability, and CI/CD excellence with Terraform and GitHub Actions, plus observability with Datadog.