Python fullstack Developer (React.js, Flask & AI/RAG)

Quest Global; Chennai District; On-site; INR 1,500,000 - 3,000,000; Full time

Job summary

Quest Global is seeking a senior software professional in Chennai to contribute as an individual contributor across the Windows software stack, delivering high-quality, reusable code and detailed technical documentation.

You will design, develop, test, and deploy full-stack applications, integrating AI/LLM capabilities with Flask backends, REST APIs, and modern frontend tech. A strong background in Python, React, and SQL is essential.

Qualifications

• 5-8 years of experience in software development using Python.
• Strong expertise in React.js, JavaScript/TypeScript, HTML, and CSS.
• Hands-on experience in developing REST APIs and backend services using Flask.
• Experience building and deploying end-to-end full-stack web applications.
• Strong knowledge of SQL databases, data modeling, and API integration.
• 2+ years of experience developing AI/LLM-powered applications.
• Hands-on experience with RAG, Prompt Engineering, AI Agents, and LLM integration.
• Familiarity with LangChain, LangGraph, Vector Databases, and Azure OpenAI.
• Strong analytical, problem-solving, and communication skills.
• Ability to collaborate across teams and drive projects from concept to production.

Responsibilities

• Analyse requirements, design, develop, modify, and deploy software components anywhere in the Windows software stack.
• Write effective and reusable code according to best practices.
• Perform unit test, verification and validation of the code developed.
• Develop technical documents and handbooks to accurately represent application design and code.
• Work as an individual contributor aligned with project priorities.

Skills

Python

React.js

JavaScript/TypeScript

HTML

CSS

REST APIs

Flask

SQL databases

AI/LLM

Prompt Engineering

LangChain

LangGraph

Vector Databases

Azure OpenAI

Tools

LangChain

LangGraph

Vector Databases

Azure OpenAI

Job description

Job Requirements

At Quest Global, it’s not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place—to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster.

Job Requirements

At Quest Global, it’s not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place—to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster.

The candidate will be furnishing an individual contribution role in technical execution of project tasks. The purpose of this role is to execute mediumto high complex project tasks to generate deliverables on-time with the right quality using defined processes, tools and standards

Key Responsibilities

• Analyse requirements, design, develop, modify, and deploy software components anywhere in the Windows software stack.
• Write effective and reusable code according to best practices
• Perform unit test, verification and validation of the code developed.
• Develop technical documents and handbooks to accurately represent application design and code.
• Work as an individual contributor aligned with project priorities.

We are known for our extraordinary people who make the impossible possible every day. Questians are driven by hunger, humility, and aspiration. We believe that our company culture is the key to our ability to make a true difference in every industry we reach. Our teams regularly invest time and dedicated effort into internal culture work, ensuring that all voices are heard.

We wholeheartedly believe in the diversity of thought that comes with fostering a culture rooted in respect, where everyone belongs, is valued, and feels inspired to share their ideas. We know embracing our unique differences makes us better, and that solving the worlds hardest engineering problems requires diverse ideas, perspectives, and backgrounds. We shine the brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace.

Work Experience

Required Skills:

• 5-8 years of experience in software development using Python.
• Strong expertise in React.js, JavaScript/TypeScript, HTML, and CSS.
• Hands‑on experience in developing REST APIs and backend services using Flask.
• Experience building and deploying end-to-end full-stack web applications.
• Strong knowledge of SQL databases, data modeling, and API integration.
• 2+ years of experience developing AI/LLM-powered applications.
• Hands‑on experience with RAG, Prompt Engineering, AI Agents, and LLM integration.
• Familiarity with LangChain, LangGraph, Vector Databases, and Azure OpenAI.
• Strong analytical, problem-solving, and communication skills.
• Ability to collaborate across teams and drive projects from concept to production.

Desired Skills

• Experience or willingness to work in other programming languages.
• Good to have Semiconductor domain experience.
• Should be ready to learn, unlearn and re‑learn.