Senior GenAI Engineer for Enterprise-Grade Apps

optimum solutions (singapore) pte ltd; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Optimum Solutions (Singapore) Pte Ltd is seeking a Senior GenAI Application Engineer to design, build and deliver production-grade GenAI applications for enterprise use cases. The ideal candidate will work at the intersection of software engineering, GenAI application development, enterprise integration, data, and platform engineering.

This is a hands‑on engineering role requiring practical experience with LangGraph, LangChain, RAG, agentic workflows, tool calling, LLM integration, APIs, and

Qualifications

• 6+ years of software engineering experience with GenAI or AI-powered apps.
• Proven production-grade GenAI app development experience.
• Hands-on with LangGraph/LangChain and orchestration workflows.

Responsibilities

• Design and develop production-grade GenAI applications using Python, Java, or similar technologies.
• Build agentic workflows with LangGraph/LangChain for multi-step reasoning and automation.
• Develop and optimize RAG solutions including ingestion, embeddings, and retrieval.
• Integrate LLMs into enterprise apps via hosted APIs, databases, and enterprise data sources.
• Implement tool calling and prompt orchestration for reliable enterprise interactions.
• Engineer production reliability with error handling, retries, timeouts and caching.
• Build observability: logging, tracing, latency monitoring and token usage tracking.
• Containerize and deploy GenAI apps with Docker, Kubernetes, OpenShift, in cloud platforms.
• Collaborate across teams to meet enterprise architecture, security, and ops needs.
• Challenge weak designs and push for scalable, maintainable solutions.

Skills

Backend development

API design

Distributed systems

Observability & monitoring

Production-grade AI applications

Tools

LangGraph

LangChain

RAG

Agentic workflows

Tool calling

Prompt orchestration

Docker

Kubernetes/OpenShift

Cloud platforms

Job description

Optimum Solutions (Singapore) Pte Ltd is seeking a Senior GenAI Application Engineer to design, build and deliver production-grade GenAI applications for enterprise use cases. The ideal candidate will work at the intersection of software engineering, GenAI application development, enterprise integration, data, and platform engineering.

This is a hands‑on engineering role requiring practical experience with LangGraph, LangChain, RAG, agentic workflows, tool calling, LLM integration, APIs, and