Senior AI Engineer: LLMs, LangChain & FastAPI

Rolustech; Lahore; On-site; PKR 1,800,000 - 3,600,000; Full time

Job summary

Rolustech in Lahore is seeking an experienced AI developer to design and deploy production-grade Generative AI solutions, including RAG pipelines and AI agents. The role emphasizes building backend services with FastAPI or Flask and integrating LangChain/LangGraph frameworks.

The ideal candidate has 3–4 years of relevant experience, strong Python skills, and hands-on work with LLMs, vector databases, cloud platforms, and AI coding tools.

Qualifications

• 3-4 years of relevant experience.
• Strong Python programming skills with FastAPI or Flask
• Hands-on experience with LLMs, RAG pipelines, and vector databases
• Experience building AI agents with LangChain, LangGraph, or similar frameworks
• Familiarity with cloud platforms, Docker, and CI/CD
• Practical experience using AI coding tools, with the ability to review, test, and maintain code

Responsibilities

• Build and deploy intelligent AI solutions as production-ready applications
• Develop RAG pipelines and work with vector databases
• Create AI agents using frameworks such as LangChain and LangGraph
• Build backend services using FastAPI or Flask
• Review, test, and maintain code, including code produced with AI coding tools

Skills

Python programming

LLMs / Generative AI

RAG pipelines

Agentic AI

Tools

LangChain

LangGraph

FastAPI

Flask

Docker

CI/CD

Vector databases

Job description

Rolustech in Lahore is seeking an experienced AI developer to design and deploy production-grade Generative AI solutions, including RAG pipelines and AI agents. The role emphasizes building backend services with FastAPI or Flask and integrating LangChain/LangGraph frameworks.

The ideal candidate has 3–4 years of relevant experience, strong Python skills, and hands-on work with LLMs, vector databases, cloud platforms, and AI coding tools.