Avensys is a reputed global IT professional services company headquartered in Singapore. Our service spectrum includes enterprise solution consulting, business intelligence, business process automation and managed services. Given our decade of success, we have evolved to become one of the top trusted providers in Singapore and service a client base across banking and financial services, insurance, information technology, healthcare, retail and supply chain.
Job Summary
We are seeking a highly skilled Full-Stack Developer with strong experience in AI-driven applications to design, build, and scale intelligent systems powered by Large Language Models (LLMs). You will work hands-on with LangChain, CrewAI, and modern AI tooling to develop autonomous agents, RAG pipelines, and production-ready AI workflows.
This role requires deep backend expertise in Python (FastAPI) and Golang, combined with frontend development using ReactJS, to deliver robust, user-friendly AI products.
Key Responsibilities
AI & LLM Development
• Design and implement LLM-powered applications using LangChain and CrewAI
• Build multi-agent systems, task orchestration, and autonomous workflows
• Develop RAG (Retrieval Augmented Generation) pipelines using vector databases
• Integrate LLM APIs (OpenAI, Azure OpenAI, Anthropic, open-source models)
• Optimize prompt engineering, memory, tools, and agent performance
• Implement evaluation, monitoring, and logging for AI outputs
Backend Development
• Build scalable APIs using Python (FastAPI)
• Develop high-performance backend services in Golang where low latency and concurrency are critical
• Design REST and async APIs for AI services and agent orchestration
• Handle authentication, authorization, rate-limiting, and security best practices
• Integrate databases (SQL & NoSQL) and vector stores (Pinecone, Weaviate, FAISS, Qdrant)
• Write clean, testable, and maintainable backend code
Frontend Development
• Develop responsive, interactive UIs using ReactJS
• Build dashboards and interfaces for AI agents, chat systems, and workflows
• Integrate frontend applications with FastAPI and Golang services
• Manage application state, API calls, and error handling
• Ensure performance, accessibility, and clean UX for AI-driven features
System Architecture & DevOps
• Design end-to-end system architecture for AI products
• Containerize services using Docker
• Work with CI/CD pipelines and cloud platforms (AWS, GCP, Azure)
• Optimize system performance, cost, and scalability
• Implement observability (logging, tracing, metrics)
Required Skills & Qualifications
Core Technical Skills
• Strong proficiency in Python with FastAPI
• Experience with LangChain and CrewAI
• Solid experience in ReactJS and JavaScript
• Working knowledge of Golang
• Strong understanding of REST APIs and async systems
• Hands-on experience with DevOps workflows
• Experience with Docker and cloud deployments
WHAT’S ON OFFER
You will be remunerated with an excellent base salary and entitled to attractive company benefits. Additionally, you will get the opportunity to enjoy a fun and collaborative work environment, alongside a strong career progression.
To submit your application, please apply online or email your UPDATED CV to ashwak@aven-sys.com or Whatsapp : 6567619833,
Your interest will be treated with strict confidentiality.
CONSULTANT DETAILS:
Consultant Name : Ashwak Ahmed S
Avensys Consulting Pte Ltd
EA Licence 12C5759
Privacy Statement: Data collected will be used for recruitment purposes only. Personal data provided will be used strictly in accordance with the relevant data protection law and Avensys' privacy policy.
