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Posted 07 July, 2026

Data Engineer

ExlService Holdings, Inc.
Pune, Maharashtra, India Full Time
Reference: 218_689623_15131

Design, develop, and maintain scalable backend applications and APIs using Python.

* Build and optimize RESTful APIs and backend services for enterprise-grade applications.

* Design and implement **LLM/GenAI-based use cases and agentic workflows**.

* Work on **GraphQL APIs and AWS AppSync integrations**.

* Develop and maintain **LangChain/LangGraph-based orchestration workflows** for AI systems.

* Implement observability, tracing, and monitoring for LLM applications using **Langfuse**.

* Work with **AWS services including DynamoDB and S3** for scalable storage and data management.

* Participate in architecture and system design discussions for scalable and production-ready systems.

* Write clean, maintainable, and testable code with proper unit testing.

* Perform debugging, troubleshooting, and performance optimization.

* Collaborate with cross-functional teams to convert business requirements into scalable technical solutions.

* Participate in code reviews and follow engineering best practices.

Bachelors defree

### Required Skills

* Strong experience in **Python backend development**

* Experience with **Flask / FastAPI**

* Strong understanding of **REST APIs, backend architecture, and microservices**

* Experience with **GraphQL / AWS AppSync**

* Hands-on experience with **LLM / Generative AI applications**

* Experience with **LangChain and LangGraph** for LLM orchestration and workflow management

* Experience with **Langfuse** for LLM observability, tracing, and monitoring

* Strong understanding of **agentic workflows and stateful AI systems**

* Hands-on experience with **AWS services (DynamoDB, S3)**

* Good understanding of **system design and scalable architecture**

* Experience writing **unit tests using pytest**

* Strong understanding of **Git, version control, and MR/code review workflows**

* Strong debugging and problem-solving skills

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