As we expand our AI capabilities, we are looking for an Applied AI Engineer – Full Stack who can build production-ready AI features across LLMs, agents, RAG and enterprise SaaS applications.

What You’ll Work On
Build and improve AI agents, including tool calling, intent routing and model fallback.
Develop MCP servers with secure, permission-controlled access to systems.
Build RAG pipelines covering parsing, chunking, embeddings, retrieval and reranking.
Test AI features for accuracy, reliability, performance and cost.
Build end-to-end features using React, TypeScript, Java/Spring Boot and Node.js.
Work with MySQL, AWS and multi-tenant SaaS environments.
Debug production issues and improve application performance and stability.

Must-Have Skills
Strong React and TypeScript
Java with Spring Boot and/or Node.js
Hands-on experience building LLM applications
Experience with RAG, AI agents, tool calling and prompt evaluation
Working knowledge of MCP or similar agent-tool integration




Solid SQL, preferably MySQL
Understanding of authentication, authorisation and data isolation
Ability to troubleshoot production issues

Valuable to Have
OpenAI / Anthropic APIs
LangChain / LlamaIndex
Elasticsearch or vector databases
AWS – ECS, S3, CloudWatch
Redis / RabbitMQ
Experience with multi-tenant SaaS products

Why Join Lexplosion?

You will get the chance to work at the intersection of AI, SaaS and LegalTech, build real production AI systems and gain hands-on exposure across frontend, backend, cloud and AI engineering.

This role is ideal for engineers who want to move beyond basic AI experimentation and build scalable, secure and production-ready AI applications.

Job Category: Applied AI Engineer – Full Stack

Job Type: Full Time

Job Location: Kolkata

📌 Applied Ai Engineer – Full Stack Kolkata (India)
🏢 Lexplosion
📍 India