Senior AI Engineer

Call Quest Solution is seeking a Senior AI Engineer to join a client engineering team as an embedded technical expert, driving the development of advanced AI-powered solutions. This role focuses on building modular, scalable systems leveraging workflow orchestration, state management, and Large Language Models (LLMs) to modernize complex software environments.

Responsibilities:

• Design and implement agentic AI workflows using LangGraph and LangChain
• Build modular systems supporting state management and complex workflow orchestration
• Develop AI-driven solutions for code modernization, including analysis, summarization, and transformation
• Design and maintain high-performance RAG pipelines and vector-based data operations
• Integrate and optimize multiple LLM platforms (GPT-4, Claude, Gemini, Vertex AI, etc.)
• Manage data persistence and similarity search using PostgreSQL with pgvector
• Develop utilities for file processing, model operations, logging, and error handling
• Ensure scalable, reliable, and production-ready AI applications
• Collaborate closely with engineering teams to modernize legacy systems through AI automation

Requirements:

• Strong hands-on experience in AI development and workflow design
• Expertise with LangGraph and LangChain
• Experience building RAG architectures and vector database solutions
• Multi-LLM integration and optimization experience
• Strong Python development skills
• Experience with PostgreSQL and vector extensions (pgvector)
• Understanding of software architecture and modular system design
• Experience with cloud AI platforms (Vertex AI, Azure AI, AWS AI services)
• Knowledge of code analysis, refactoring, or modernization workflows
• Familiarity with prompt engineering and agent-based systems
• Experience building scalable AI systems in production environments