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

Good 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 opportunity 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)
🏢 Lexplosion
📍 Kolkata