**Senior Full-Stack Engineer (Freelance/Contract, Remote)**

NexaFlow is developing a proof-of-concept automated code review tool powered by large language models (LLMs). We are seeking a Senior Full-Stack Engineer to design and deliver the prototype end-to-end.

**Key Responsibilities:**
- Own the entire proof-of-concept (PoC) development process, from architecture to deployment.
- Integrate webhooks for pull request (PR) analysis.
- Build a hybrid review engine combining LLMs and static analysis tools.
- Implement custom rule configuration for code reviews.
- Develop a review dashboard for users.
- Ensure Docker-based deployment of the solution.

**Requirements:**
- 5+ years of full-stack development experience with Python (FastAPI) or Node.js and React.
- Proven experience integrating LLM APIs (such as OpenAI GPT-4, Anthropic Claude) into production systems.
- Hands-on experience with CI/CD pipelines, including GitHub Actions or GitLab CI.
- Familiarity with code review tooling.
- Ability to work independently, handling all aspects from system architecture to deployment.
- Experience with static analysis tools (e.g., Semgrep, CodeQL) is a strong plus.

**Engagement Details:**
- Freelance/contract position.
- Fully remote work.
- Competitive rate based on experience.