Junior Software Engineer

Mechanize Inc.

Location: San Francisco   |   Full-Time   |   $250,000 - $250,000

As a software engineer, you will execute on our vision to create RL environments to automate software engineering. In particular, you will:

  • Build the core simulation platform: Create a realistic, containerized environment where AI agents perform software engineering and other professional tasks.
  • Design realistic evaluation scenarios: Independently identify meaningful software engineering tasks, determine clear grading criteria, and select the appropriate tools and workflows that allow AI agents to reliably complete tasks.
  • Develop a consumer software product: This product will serve as a foundation for our simulation platform, where we will task AI agents with building and modifying this product. This will require full stack skills from writing a backend in Python and a frontend with web technologies like React, Typescript, HTML and CSS.
  • Establish engineering standards: Set up automated testing, practical CI/CD pipelines, effective monitoring, and clear processes to ensure high-quality code and quick issue resolution.
  • Influence technical direction: Directly shape product development, make key architectural decisions, and contribute to growing our engineering team at an early-stage startup.

You might be a fit if you:

  • Have 1-5 years of experience building full-stack software products, including leading at least one significant project from idea to production.
  • Write fluent Python and TypeScript (React)
  • Have practical experience with designing robust CI/CD processes, automated testing strategies, and effective monitoring and observability.

No prior machine learning or AI experience is required.


Job Details

Location: San Francisco Employment Type: Full time Department: Engineering Compensation: Base salary $250K • 0.2% – 0.4%

Company Details

Company Overview

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Post Date: October 20, 2025