Senior Gen AI Engineer | Flexgen

Senior Gen-AI Engineer | Flexgen Flexgen.← All Jobs Senior Gen-AI Engineer Posted Jul 24, 2026 - Design, develop, and maintain scalable Python-based APIs and backend services using FastAPI and related frameworks. - Build, deploy, and optimize production-grade LLM applications using providers such as OpenAI and Anthropic. - Design and implement end-to-end RAG solutions, including vector databases, semantic search, retrieval optimization, and chunking strategies. - Develop and manage secure, scalable MCP servers and AI infrastructure. - Build and orchestrate multi-agent systems to automate complex workflows and business processes. - Create, test, and refine prompts, agent instructions, and LLM interactions to improve solution quality and performance. - Leverage AI-assisted development tools (e.g., Claude Code, Cursor, GitHub Copilot) to accelerate software delivery and engineering efficiency. - Implement event-driven architectures, messaging systems, and real-time communication patterns. - Monitor, troubleshoot, and optimize AI and backend systems for performance, reliability, scalability, and security. - Collaborate with cross-functional teams to deliver innovative AI solutions and establish engineering best practices. - 8+ years of experience developing APIs with Python - 2+ years of experience developing and experimenting with LLMs - Hands-on, daily use of AI-assisted and agentic coding tools (e.g., Claude Code, Cursor, GitHub Copilot, autonomous coding agents) to write and refactor code, automate workflows, and optimize engineering processes. - Strong experience with Python, particularly in building REST APIs using frameworks like FastAPI. - Grounding in NLP and machine learning as they relate to building LLM systems - Strong experience working with key LLM models APIs (e.g. OpenAI, Anthropic) - Experience building, deploying, and securing MCP servers at scale. - Understanding of multi-agent systems and their applications in complex problem-solving scenario