#EG AI Developer (Agentic AI Systems)

NCS Pte Ltd; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

NCS Pte Ltd is seeking an AI Developer to lead the intelligent layer of our enterprise system, focusing on agentic reasoning and reliable, secure AI agents for complex workflows.

You will design stateful multi-agent networks using LangGraph/LangChain, build high-precision RAG pipelines, and deploy AI microservices in OCI/OpenShift environments, collaborating across software, data, and security teams to deliver high-impact AI capabilities.

Qualifications

• Expert in Python for asynchronous AI applications.
• Mastery of LangGraph and LangChain for building production-grade, stateful systems with human-in-the-loop verification patterns.
• Proven success in developing RAG capabilities, including chunking strategies, query expansion, re-ranking, hybrid search.
• Deep hands-on experience with vector DB, graph DB, NoSQL, and RDBMS.
• Experience building guardrails to mitigate risks such as prompt injection and data leakage.
• Experience integrating AI evaluation into CI/CD pipelines (e.g., Jenkins, GitLab CI).
• Experience serving AI agents via FastAPI, packaging and deploying in OCI-compliant environments and OCP.
• Proficiency in AI tracing, observability, and logging tools to identify bottlenecks.
• Experience implementing semantic caching and designing for parallel LLM invocation.
• Knowledge of prompt engineering and context engineering techniques.

Responsibilities

• Agentic AI Architecture & Development: Design and implement stateful multi-agent networks and/or workflows using LangGraph and LangChain.
• Architect and implement multi-layered guardrails to ensure agent actions remain within business scope, enterprise safety and policy boundaries.
• Build guardrails to mitigate risks such as prompt injection and data leakage.
• Develop sophisticated reasoning engines capable of handling complex, high-consequence autonomous workflows.

Skills

Python (async)

LangGraph

LangChain

RAG development

Vector DB

Graph DB

NoSQL

RDBMS

Guardrails

CI/CD pipelines

FastAPI

OCI

OCP

AI tracing

observability

semantic caching

parallel LLM invocation

prompt engineering

context engineering

Tools

LangGraph

LangChain

FastAPI

OCI

OCP

Jenkins

GitLab CI

Vector DB

Graph DB

NoSQL

RDBMS

Job description

Company Description

NCS is a leading AI Tech Services company. With a 15,000-strong team across the Asia Pacific, NCS scales its platforms and capabilities to provide clients with greater agility and AI expertise across a range of Industries. Embracing a strong ecosystem of global partners, NCS transforms technology services delivery combining AI with digital resilience to drive real business impact. NCS is a subsidiary of the Singtel Group.

Job Description

We are looking for an AI Developer to play a key role in building our agentic reasoning engines. You will own the intelligent layer of our bespoke enterprise system, ensuring our AI agents are reliable, secure, and capable of solving complex workflows. You will be involved in developing sophisticated RAG capabilities and stateful multi-agentic networks, moving beyond simple chat to high-consequence autonomous systems.

What will you do?

1. Agentic AI Architecture & Development

• Design and implement stateful multi-agent networks and/or workflows usingLangGraphand/orLangChain.
• Architect and implement multi-layered guardrails to ensure agent actions remain within business scope, enterprise safety and policy boundaries.
• Build guardrails to mitigate risks such as prompt injection and data leakage.
• Develop sophisticated reasoning engines capable of handling complex, high-consequence autonomous workflows.

2. RAG Pipeline Development & Optimisation

• Build and optimise end-to-endRAG (Retrieval-Augmented Generation) pipelines, focusing on high-precision retrieval and semantic search.
• Integrate diverse data sources including vector DB, graph DB, NoSQL, and RDBMS.
• Implement advanced RAG techniques such as chunking strategies, query expansion, re-ranking, and hybrid search.
• Apply prompt engineering and context engineering techniques to enhance retrieval quality.

3. AI Microservices & Deployment

• Build and maintain high-performance AI microservices optimised forOCI-compliant environments.
• Serve AI agents viaFastAPI, packaging and deploying in OCI-compliant environments andOCP (OpenShift Container Platform).
• Implement semantic caching and design for parallel LLM invocation to optimise performance.
• Integrate AI evaluation intoCI/CD pipelines(e.g., Jenkins, GitLab CI).

4. Performance Monitoring & Evaluation

• UseLLM evaluation frameworksto quantitatively measure agent performance.
• Leverage AI tracing, observability, and logging tools to identify and fix bottlenecks in complex reasoning paths.
• Monitor and continuously improve agent reliability, accuracy, and efficiency.

5. Cross-Functional Collaboration

• Partner with software teams to define data contracts and integrate information flow from AI layer to software backend and frontend.
• Collaborate with stakeholders to ensure AI solutions align with business objectives and technical requirements.
• Communicate effectively (written and verbal) with technical and non-technical stakeholders at all levels.

Qualifications

An ideal candidate should posses:

Technical Requirements

• Expert-level proficiency in Python, specifically for asynchronous AI applications.
• Mastery of LangGraph and LangChainfor building production-grade, stateful systems with human-in-the-loop verification patterns.
• Proven success in developing RAG capabilities, including experience with chunking strategies, advanced techniques like query expansion, re-ranking, hybrid search, etc.
• Deep hands-on experiencewith vector DB, graph DB, NoSQL, and RDBMS.
• Experience building guardrails to mitigate risks such as prompt injection and data leakage.
• Experience integrating AI evaluation intoCI/CD pipelines(e.g., Jenkins, GitLab CI).
• Experience serving AI agents viaFastAPI, packaging and deploying inOCI-compliant environmentsandOCP.
• Proficiency inAI tracing, observability, and logging toolsto identify and fix bottlenecks in complex reasoning paths.
• Experience implementingsemantic cachingand designing forparallel LLM invocation.
• Knowledge ofprompt engineeringandcontext engineeringtechniques.

Professional Experience

• At least 2–5 years of experiencein AI/ML development, with substantial work in production-grade agentic AI systems.
• Proven track record of deploying AI solutions in enterprise environments.
• Experience working in Agile or iterative development environments.

Personal Attributes

• Self-motivated with a positive "can-do" attitude.
• Strong problem-solving skills and ability to work independently.
• Excellent communication and collaboration skills.
• Ability to thrive in a fast-paced, innovative environment.

Bonus Qualifications (Preferred)

• Working knowledge of database query languages includingSQLandHiveQL(or equivalent).
• Working knowledge of buildingdata ETL pipelines.
• Knowledge in building or fine-tuningdeep learning models.
• Knowledge inmathematical statistical analysis.
• Experience with cloud platforms such asAWS, GCP, or Azure.
• Familiarity withDesign ThinkingorLean UXmethodologies.
• Exposure toscaled Agile frameworks(SAFe, LeSS).
• Experience working with distributed teams across multiple time zones.
• Proficiency in using collaboration tools likeMural, Miro, or Jamboard.

Additional Information

Why Join NCS?

Grow with Us

• Work on cutting-edge AI products that shape the future of technology
• Collaborate with talented, passionate teams across research, engineering, and design
• Access continuous learning opportunities and career development pathways

Make an Impact

• Transform AI research into products that solve real problems for clients and users
• Drive innovation in a leading Technology Services Firm with regional presence
• Contribute to building a better future through responsible, human-centred AI

Thrive in Our Culture

• Experience ahuman-to-humanapproach where relationships and collaboration matter
• Be part ofTeam NCS, where bold ideas meet practical execution
• Enjoy a supportive environment that values diversity, inclusion, and respect

We are driven by our AEIOU beliefs—Adventure, Excellence, Integrity, Ownership, and Unity—and we seek individuals who embody these values in both their professional and personal lives. We are committed to our Impact: Valuing our clients, Growing our people, and Creating our future.

Together, we make the extraordinary happen.

Learn more about us at ncs.co and visit our LinkedIn career site.