AI Solutions Engineer - LLM & RAG Expert

Singapore Telecommunications Limited; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

Singapore Telecommunications Limited is seeking a skilled AI/ML Engineer in Singapore to design, develop and deploy AI agents and RAG-backed solutions. You will build scalable workflows, integrate with enterprise systems and ensure trusted, governance-aligned AI outputs.

The role requires hands-on experience with LangChain, LlamaIndex, and modern AI tooling, plus strong Python coding, APIs, and CI/CD practices. Join a fast-growing team delivering production-ready AI across business units.

Qualifications

• Bachelor's degree in CS/AI/DS or related field.
• 3-5 years of software engineering experience with Python.
• Hands-on experience building LLM applications, AI Agents or RAG solutions.
• Experience with LangChain, LangGraph, LlamaIndex or similar AI frameworks.
• Experience integrating APIs, databases and enterprise systems.
• Knowledge of vector databases, semantic search and prompt engineering.

Responsibilities

• Design, develop and deploy AI agents using LLMs, RAG and prompt engineering.
• Build scalable AI workflows that automate enterprise business processes.
• Translate business requirements into practical AI solutions.
• Develop reusable prompt workflows, tool-calling capabilities and structured outputs.
• Build and optimise RAG pipelines connected to approved enterprise knowledge sources.
• Improve retrieval quality through chunking, embeddings, indexing and metadata strategies.
• Maintain trusted knowledge bases and ensure source-grounded AI responses.
• Integrate AI applications with enterprise systems, APIs, databases and internal platforms.
• Develop secure tool-calling capabilities and support deployment into production.
• Monitor and optimise AI application performance.
• Design evaluation frameworks to measure response quality, retrieval accuracy and hallucination risks.
• Optimise prompts, guardrails and model performance.
• Support governance, version control and human-in-the-loop review processes.
• Partner with product, engineering and business teams to deliver AI solutions.
• Support demonstrations, UAT, production rollout and technical documentation.
• Communicate technical concepts clearly to technical and non-technical stakeholders.

Skills

Python

LLM applications

RAG solutions

LangChain

LangGraph

LlamaIndex

APIs & databases

CI/CD

Git

Prompt engineering

Container tech

Vector databases

Semantic search

Education

Bachelor's Degree in Computer Science, Artificial Intelligence, Data Science or related discipline

Tools

LangChain

LangGraph

LlamaIndex

Job description

Singapore Telecommunications Limited is seeking a skilled AI/ML Engineer in Singapore to design, develop and deploy AI agents and RAG-backed solutions. You will build scalable workflows, integrate with enterprise systems and ensure trusted, governance-aligned AI outputs.

The role requires hands-on experience with LangChain, LlamaIndex, and modern AI tooling, plus strong Python coding, APIs, and CI/CD practices. Join a fast-growing team delivering production-ready AI across business units.