Software Engineer Expert

Mercor; Deutschland; On-site; EUR 50,000 - 70,000; Full time

Job summary

aitrainer is hiring Software Engineers in Germany to develop and ship applications for the Mercor’s RL Studio platform. The role demands strong Python skills to build MCP servers, integrate applications, and ensure app stability and readiness for production.

Candidates should have experience with APIs, Docker, and debugging workflows. A supportive work environment is promised with no discrimination in hiring practices.

Qualifications

• Strong Python skills and experience with backend systems.
• Familiarity with Docker and Linux environments is required.
• Ability to work with configuration files and deployment pipelines.

Responsibilities

• Build MCP servers in Python using FastMCP.
• Integrate web or desktop applications into RL Studio.
• Test apps locally and debug issues.

Skills

Strong Python skills

Experience with APIs

Familiarity with Docker

Problem-solving skills

Tools

Docker

Linux

Job description

Role Overview

We’re hiring Software Engineers to build and ship apps for Mercor’s RL Studio platform. The role involves developing MCP servers and sometimes BUAs, integrating real software into sandbox environments, and ensuring apps are stable, testable, and production-ready.

What You’ll Do

• Build MCP servers in Python using FastMCP
• Integrate web or desktop applications into RL Studio
• Work with APIs, Docker, Linux environments, and service configuration
• Implement populate/snapshot hooks for app state management
• Test apps locally and debug build, runtime, and permission issues
• Ensure apps meet platform validation and deployment requirements

What We’re Looking For

• Strong Python skills
• Experience with APIs, backend systems, and debugging
• Familiarity with Docker, Linux, and local testing workflows
• Ability to work with configuration files and deployment pipelines
• Problem-solving skills and attention to technical detail

Nice to Have

• Experience with FastMCP or similar frameworks
• Experience integrating third-party apps or developer tools
• Familiarity with web apps, databases, and containerized environments

We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.