Open Source Developer [33130]

Stealth Startup; San Francisco (CA); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Collaborative culture

Learning opportunities

Work on cutting-edge technology

Job summary

Stealth Startup is looking for a passionate Open Source Developer based in San Francisco, California, who is eager to contribute to developer ecosystems and work with cutting-edge technologies like LLMs and AI tooling. This role is suited for early‑career engineers with a builder mindset.

You will collaborate with the engineering team, maintain open-source projects, and develop tools that help enhance developer experiences. Ideal candidates will show strong proficiency in Python and a willingness to engage with the open-source community.

Qualifications

• 0–3 years of experience in software development.
• Strong proficiency in Python (preferred).
• Familiarity with Git and open-source workflows (PRs, forks, issues).
• Basic understanding of APIs, backend development, and system design.
• Exposure to AI/ML concepts or interest in working with LLMs.

Responsibilities

• Contribute to and maintain open-source projects.
• Build and improve developer tools, APIs, and libraries.
• Collaborate with the engineering team to design scalable backend systems.
• Engage with the open-source community (issues, PRs, discussions).

Skills

Python

Git and open-source workflows

Basic understanding of APIs

AI/ML concepts

Problem-solving skills

Tools

Docker

Kubernetes

FastAPI

Django

Node.js

Job description

We are looking for a passionate Open Source Developer who is excited about building in public, contributing to developer ecosystems, and working on cutting‑edge technologies such as LLMs, AI tooling, and scalable backend systems. This role is ideal for early‑career engineers who love experimenting, learning fast, and shipping meaningful contributions.

Key Responsibilities

• Contribute to and maintain open‑source projects (internal and external)
• Build and improve developer tools, APIs, and libraries
• Work with modern AI/ML stacks, including LLM integrations
• Collaborate with the engineering team to design scalable backend systems
• Write clean, well‑documented, and testable code
• Engage with the open-source community (issues, PRs, discussions)
• Stay up to date with emerging technologies in AI, Python ecosystems, and developer tooling

Required Skills & Qualifications

• 0–3 years of experience in software development
• Strong proficiency in Python (preferred)
• Familiarity with Git and open-source workflows (PRs, forks, issues)
• Basic understanding of APIs, backend development, and system design
• Exposure to AI/ML concepts or interest in working with LLMs
• Good problem‑solving skills and a builder mindset

Nice to Have

• Contributions to open-source projects (GitHub profile is a big plus)
• Experience with frameworks like FastAPI, Django, or Node.js
• Familiarity with tools like Docker, Kubernetes, or cloud platforms
• Experience working with LLM APIs (OpenAI, Hugging Face, etc.)
• Understanding of vector databases or retrieval systems

What We’re Looking For

• Curious, self-driven individuals who enjoy learning by building
• Strong ownership and willingness to take initiative
• Passion for open-source and community-driven development
• Ability to work in a fast-paced, experimental environment

Why Join

• Work on cutting‑edge AI and developer tooling
• Opportunity to contribute to impactful open-source projects
• High ownership and learning opportunities from day one
• Collaborative and engineering-first culture