Job Title: Senior Full-Stack Engineer (Freelance/Contract)

NexaFlow is seeking a Senior Full-Stack Engineer to develop a proof-of-concept code review tool powered by large language models (LLMs).

Key Responsibilities:
- Design and implement a prototype tool that leverages LLMs to automatically review pull requests.
- Integrate LLM APIs (OpenAI/Anthropic) to identify bugs, security vulnerabilities, and code style issues in code submissions.
- Post contextual feedback directly on pull requests.
- Handle the entire development process independently, from architecture through deployment.
- Collaborate remotely with the NexaFlow team as needed.

Requirements:
- 5+ years of full-stack development experience.
- Proficiency in integrating LLM APIs such as OpenAI or Anthropic.
- Experience developing code review tools and working with CI/CD pipelines.
- Strong ability to independently manage end-to-end product development.
- Backend expertise in Python or Node.js.
- Frontend experience with React or Vue.
- Familiarity with Docker-based deployment.

Additional Information:
- This is a freelance/contract position, not a full-time employment role.
- Location: San Francisco (remote friendly).