Looking for a job

Katheryn Koay

@katherynkoay

Message

Senior web and AI engineer building production generative AI systems.

Malaysia

Message

What I'm looking for

I’m looking for AI Engineering position to build production generative AI and agentic workflows that automate enterprise tasks, ship reliable RAG systems, and integrate with full-stack web experiences.

I architected end-to-end agentic AI workflows using LLMs and OpenAI APIs at JoveeAI, including RAG systems with vector search, prompt engineering, and semantic guardrails.

Before that, I built scalable enterprise SharePoint Online and Microsoft 365 environments at DKLaw, streamlining document lifecycle management and knowledge sharing while automating workflows.

Earlier, at UOB Kay Hian Securities, I engineered full-stack applications with ReactJS, Node.js, PHP, C#, and .NET, building low-latency RESTful APIs and modernizing legacy .NET systems through refactoring and SQL optimizations.

Experience

Work history, roles, and key accomplishments

Current

Senior Web Dev & AI Engineer

Current

Aicon Solutions Limited

Feb 2026 - Present (6 months)

Architected end-to-end agentic AI workflows using LLMs, OpenAI APIs, and custom orchestration frameworks. Designed RAG systems with vector search and prompt engineering for context-aware responses.

Python NLP Machine Learning LLM OpenAI API RAG Vector Search Prompt Engineering AI Agent Development PRD文档撰写 Technical Documentation

Senior SharePoint & Web Developer

Dklaw

Oct 2025 - Feb 2026 (4 months)

Architected enterprise SharePoint Online and Microsoft 365 environments for remote collaboration. Engineered scalable digital workplaces and automated business workflows.

SharePoint Online Microsoft 365 Document Management Workflow Automation

Web Developer & Data Analyst

Havenhub

May 2024 - Oct 2025 (1 year 5 months)

Developed high-converting WordPress web applications and engineered custom conversational AI tools. Integrated digital marketing analytics and built Power BI dashboards.

WordPress Elementor Conversational AI Chatbot GTM Google Analytics Google Ads Power BI CRM

Software Developer

Uob Kay Hian Securities (M) Sdn. Bhd.

Jul 2020 - Apr 2024 (3 years 9 months)

Engineered full-stack enterprise applications using ReactJS, Node.js, PHP, C#, and .NET Framework. Architected low-latency RESTful APIs and modernized legacy systems.

Node PHP C#.NET Framework REST APIs SQL CI CD Unit Testing Technical Documentation

Freelance Digital Artist

Freelance

Mar 2020 - Mar 2024 (4 years)

Created original character designs, digital branding assets, and interactive AR filters. Managed end-to-end creative direction and content delivery.

Character Design Digital Art Branding Animation Content Creation

Quintiq Specialist

Quintiq, A Dassault Systèmes Company

Jan 2020 - Mar 2020 (2 months)

Engineered constraint-based scheduling models to optimize manufacturing and supply chain operations. Configured planning algorithms for resource allocation.

Quintiq Constraint Based Scheduling Supply Chain Optimization Resource Allocation

Intern Software Engineer

Optivolve Group Sdn. Bhd.

Nov 2018 - Jan 2019 (2 months)

Designed conversational AI chatbots using IBM Watson Assistant. Executed penetration testing and social engineering simulations to assess security risks.

IBM Watson Chatbot Penetration Testing Social Engineering