Senior AI Agent Engineer

About the Role

Rumor is hiring for one of their clients, Wurknow, for a Senior Full Stack AI Engineer. We are looking for a Senior Full Stack AI Engineer with 7+ years of software development experience. The ideal candidate should have strong experience in Python, PostgreSQL, React, and AI/LLM development. The candidate will build a new AI product from the beginning, work closely with the leadership team, and later guide a small team of developers.

This is a hands-on role, so the candidate should be comfortable coding daily and handling production issues.

Key Responsibilities

• Build the AI agent backend using Python and FastAPI.
• Work with LLMs, including prompts, tool/function calling, and structured outputs.
• Design and maintain PostgreSQL databases, queries, indexes, and migrations.
• Build user interfaces using React and TypeScript.
• Integrate the AI agent with internal APIs and third-party services.
• Use AI coding tools such as Claude Code, Cursor, or GitHub Copilot to improve development speed and productivity.
• Guide and mentor 1–3 developers through code reviews, planning, and technical guidance.
• Make technical and architecture decisions and explain them clearly to product and leadership teams.
• Set up and maintain testing, CI/CD, logging, and monitoring.
• Monitor the production system and handle technical issues and incidents.
• Track AI performance, response quality, speed, and usage costs.
• Improve prompts and AI logic as models and requirements change.
• Follow secure coding practices and protect customer and personal data.
• Continue developing new features and improvements after the product goes live.

Required Skills

• 7+ years of professional software development experience.
• 1–2+ years of experience building and supporting AI/LLM features in production.
• Strong experience with Python and backend API development.
• Strong knowledge of PostgreSQL, database design, SQL, indexing, and performance tuning.
• Good experience with React and TypeScript.
• Strong understanding of LLMs, prompt design, tool/function calling, retries, rate limits, and handling incorrect AI responses.
• Experience using AI coding tools such as Claude Code, Cursor, or Copilot.
• Experience leading or mentoring developers while continuing to code hands-on.
• Experience supporting production applications, including monitoring, incident handling, and root-cause analysis.
• Good written and spoken English.

Preferred Skills

• Experience with RAG, embeddings, and pgvector.
• Experience with LangGraph, Claude Agent SDK, or MCP.
• Experience with LLM testing, monitoring, and cost management.
• Knowledge of Microsoft Azure, Docker, and CI/CD.
• Experience with multi-tenant SaaS applications.
• Experience in staffing, HR tech, payroll, or workforce management.
• Knowledge of SOC 2 or similar security and compliance standards.