# JEFF (BOON KEAT) ONG

[LinkedIn](linkedin.com/in/jeff-ong) · [GitHub (jeff-ong)](https://github.com/jeff-ong) · [GitHub (arcpx-eng)](https://github.com/arcpx-eng) · [jeff-ong.com](https://jeff-ong.com) · [arcpx.com](https://arcpx.com) · Toronto, ON

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## ABOUT

Principal Software Developer with a background in computer science and marketing communications, specializing in AI-powered products and cloud-native systems. Ten years of experience shipping production agentic applications, RAG architectures, and global web platforms—from technical discovery through launch.

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## KEY HIGHLIGHTS

- Improved agentic application accuracy by 20% by implementing GraphRAG—researching and building a knowledge graph over unstructured data to give conversational LLM systems a more reliable, context-aware retrieval layer.
- Built a modular agentic platform at [ARCPX](https://arcpx.com/) where users compose custom workflows via an asynchronous DAG engine, configurable nodes, and a persistent memory system.
- Led development of an autonomous ETL data pipeline at Amazon that ingests unstructured data and optimizes vector embeddings for semantic retrieval.
- Built the cloud-native software stack for a humanoid robot demo at AWS re:Invent 2023 using S3, Lambda, Step Functions, and Bedrock.
- Directed CMS development at Meta and migrated localized datasets from legacy systems, establishing a scalable foundation for global platform development.

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## EXPERIENCE

### Founding Engineer | [ARCPX](https://arcpx.com/)
*Present*

- Building [ARCPX](https://arcpx.com/) — a modular agentic platform for composing AI-powered workflows—from system design and full-stack development through production deployment on cloud infrastructure.

### Principal Software Developer | Monks *(Amazon, Meta clients)*
*November 2018 – Present*

- Developed and shipped production-grade agentic applications in Python at scale.
- Reduced LLM latency and improved accuracy by 20% through context-window optimization and prompt refinement.
- Optimized CI/CD pipelines by parallelizing application deployments across environments.
- Researched and built knowledge graph retrieval systems, improving RAG accuracy and retrieval efficiency.
- Hardened agentic applications with exponential backoff, retry logic, and pre-trained LLM guardrail services.
- Managed cloud infrastructure using AWS CDK and CloudFormation.
- Contributed to global-scale web properties including WhatsApp.com, about.meta.com, and projectaria.com at Meta.

### UX Design Consultant (Contract) | Anomaly
*May 2024 – September 2024*

- Launched a Telegram mini app.
- Designed user journeys to improve engagement.
- Built a UI component library for rapid prototyping.

### Front-End Engineer (Contract) | MirrorMe3D
*February 2019 – October 2023*

- Developed a 3D scan analysis application for remote medical monitoring and diagnostics.
- Built interactive WebGL tools for analyzing pre- and post-operative facial 3D scans with advanced visualization and data-driven insights.

### Assistant Instructor | Trilogy Education
*May 2018 – October 2018*

- Tutored students in web development, data structures, and algorithms.

### Web Developer | Cotton Candy
*May 2018 – October 2018*

- Developed Shopify e-commerce themes and plug-ins.
- Awarded a long-term RFP to manage an e-commerce platform with an integrated brand experience.

### UI Developer & Designer | Dig Insights
*March 2017 – May 2018*

- Designed and developed data analysis platforms.
- Shipped scalable applications for sampling and analyzing user data.

### Front-End Developer | AutoTrader
*February 2015 – March 2017*

- Developed e-commerce websites and CMS systems.

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## CERTIFICATION

**AWS Certified AI Practitioner**  
Covers artificial intelligence (AI), machine learning (ML), and generative AI concepts.

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## EDUCATION

**B.S. Computer Science** | Ryerson (TMU) University · 2018  
Java, Unix, C/C++, data structures and algorithms, object-oriented design.

**UI Design** | BrainStation · 2017  
Typography, Sketch, prototyping, visual and interaction design.

**UX Design** | George Brown College · 2017  
Information architecture, usability testing, UX strategy and research.

**Media Communications** | Humber College · 2014  
Video, audio, and photographic production; press releases, brochures, and communications design.

**Sound Engineering** | RAC · 2011  
Sound and music production.