Senior GenAI Engineer - Build Production-Grade LLM Apps

r systems (singapore) pte limited; Singapore; On-site; SGD 140,000 - 210,000; Full time

Job summary

R Systems Singapore Pte Ltd invites senior software engineers to advance GenAI application development. You will leverage LangGraph and LangChain to build production-grade GenAI solutions and integrate with enterprise data sources.

You will design robust backends in Python/Java, implement API patterns, observability, and resilience, and apply RAG and agentic workflows. The role emphasizes real deployments, not experiments, with strong focus on reliability.

Qualifications

• 10+ years of software engineering experience with GenAI application development.
• Proven track record building production-grade GenAI apps, not just prototypes.
• Hands-on with LangGraph, LangChain or similar orchestration frameworks.
• Understanding of RAG, agentic workflows, tool calling, prompt orchestration and context management.
• Experience integrating LLMs into real apps via APIs, backend services and enterprise data sources.
• Experience with open weight models or strong hands-on experimentation.
• Strong backend skills in Python, Java or similar languages.
• Knowledge of API design, distributed systems and production resilience patterns.
• Experience with observability, logging, tracing and troubleshooting for GenAI or backend apps.

Skills

GenAI development

Production-grade GenAI

LangGraph

LangChain

RAG

Agentic workflows

LLM API integration

Open weight models

Python

Java

API design

Distributed systems

Observability

Tools

LangChain

Job description

R Systems Singapore Pte Ltd invites senior software engineers to advance GenAI application development. You will leverage LangGraph and LangChain to build production-grade GenAI solutions and integrate with enterprise data sources.

You will design robust backends in Python/Java, implement API patterns, observability, and resilience, and apply RAG and agentic workflows. The role emphasizes real deployments, not experiments, with strong focus on reliability.