Jeff.

Hello! This is Jeff,
a Software Developer + Product Manager in AI Systems.

I have been working on ARCPX, a modular platform where users compose agentic workflows that fit their needs. Before that, I architected enterprise AI systems on AWS — agentic applications, ingestion pipelines, and GraphRAG retrieval — for Monks and Amazon, and contributed to global-scale web platforms including WhatsApp.com at Meta.

Toronto, ON

Current

  • Principal Developer at Monks

Articles.

AI Agents Medium

We don't always need an AI Agent

The agent problem nobody talks about — why serious workflows benefit from decomposing monolithic agents into small, inspectable DAG steps you can version, audit, and re-run independently.

Algorithms DEV Community

Modular Solution for Typeahead Feature

A decoupled typeahead engine built on ternary search trees — O(log n) prefix search without HTTP round-trips, packaged as an npm module developers can run on the front-end or behind a cached service.

Projects.

Orchestration Agentic

ARCPX

ARCPX is a modular agentic platform where users compose agents to fit their workflow — an asynchronous DAG engine, configurable nodes, and a persistent memory layer. As founding engineer, I own the full lifecycle from technical discovery and system design through production deployment on cloud infrastructure.

AI / Agentic AWS

GraphRAG knowledge systems

Built enterprise agentic applications on AWS with a hybrid retrieval stack — vector search paired with a custom knowledge graph over unstructured data. The architecture improved response accuracy by 20% over vector-only baselines and gave the system a real-time, context-aware knowledge layer suitable for production workloads.

Platform Meta

WhatsApp.com

Re-engineered Meta's content management infrastructure, spearheading the migration of complex localized datasets from legacy systems. This architectural overhaul established a scalable foundation for global platform development and multi-region deployment across WhatsApp.com and related properties.

Robotics AWS re:Invent

Humanoid Robot

Spearheaded technical development for a humanoid robot featured on stage at AWS re:Invent 2023 — integrating real-time perception, orchestration, and on-device inference into a live demo environment built for a global audience.

Experience.

Principal Software Developer

Monks, Amazon, Meta · Toronto, ON

  • Delivered production software in Python, TypeScript, and modern web stacks across agency, cloud, and platform teams
  • Owned AI-driven products end to end — technical discovery, architecture, implementation, launch, and iteration at scale
  • Designed and deployed agentic applications on AWS using CDK and CloudFormation, with guardrails, retry logic, and high-availability patterns
  • Developed data pipelines for unstructured sources, combining vector databases with knowledge-graph and RAG-style retrieval for enterprise use cases
  • Raised LLM accuracy 20% and cut latency 20% through context-window tuning and hybrid retrieval design
  • Facilitated client-facing discovery sessions to shape requirements, evaluate trade-offs, and align engineering roadmaps with business outcomes
  • Optimized CI/CD workflows to improve code quality and deployment throughput across teams
  • Shipped global-scale web properties including WhatsApp.com, about.meta.com, and projectaria.com at Meta

Design Consultant

Anomaly · Toronto, ON

  • Launched a Telegram mini app with a UI component library for rapid prototyping

Front-End Engineer

MirrorMe3D · Toronto, ON

  • Built 3D scan analysis tools for remote medical monitoring using WebGL

Assistant Instructor

Trilogy Education · Toronto, ON

  • Tutored students in web development, data structures, and algorithms

Web Developer

Cotton Candy · Toronto, ON

  • Developed Shopify themes and won a long-term RFP for e-commerce platform management

UI Developer & Designer

Dig Insights · Toronto, ON

  • Designed and shipped data analysis platforms for user sampling and analytics

Front-End Developer

AutoTrader · Toronto, ON

  • Developed e-commerce websites and CMS systems

Education.

Computer Science
Ryerson (TMU) University, Toronto · 2018
UI Design
BrainStation · 2017
Media Communications
Humber College · 2014
Sound Engineering
Sound and Music Production · 2011

Let's connect.

Open to staff and principal engineering roles — reach out for opportunities, consulting, or a coffee chat in Toronto.

LinkedIn → GitHub (jeff-ong) → GitHub (arcpx-eng) → Resume (.md) →