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Artificial Intelligence JavaScript PHP Python Software Architecture
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Chong C.

@jeffleads

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5.0
4

4.3

4.3

100%

AI & Automation | Python | Full Stack Developer

$25 USD / Hour

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Hong Kong (10:14 PM)

Joined on December 5, 2025

1 Recommendation

$25 USD / Hour

If you’re building your dream project or you are in trouble with a headache issues, and want it done the right way, here I am. I help founders and teams turn complex ideas into real, production-ready systems—not demos or fragile MVPs. My work focuses on AI agents, automation platforms, and scalable backend systems where architecture and reliability truly matter. I’ve delivered AI studios, agent orchestration platforms, test automation frameworks, and enterprise-grade infrastructure under tight deadlines. I care about clean design, maintainable code, and shipping systems that last. 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤𝐬: 𝑨𝑰 & 𝑨𝒈𝒆𝒏𝒕 𝑺𝒚𝒔𝒕𝒆𝒎𝒔 LangChain, LangGraph, CrewAI, LLM Orchestration, AI Workflows, Agent Runtimes, Voice Agent, Chatbot 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 & 𝑨𝑷𝑰𝒔 Python, FastAPI, Django, REST APIs, Async Processing, Webhooks 𝑭𝒖𝒍𝒍-𝑺𝒕𝒂𝒄𝒌 & 𝑭𝒓𝒐𝒏𝒕𝒆𝒏𝒅 JavaScript, React, Modern Web UI, API Integration 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 & 𝑻𝒆𝒔𝒕𝒊𝒏𝒈 Playwright, Selenium, Test Architecture, CI-Friendly Automation 𝑫𝒆𝒗𝑶𝒑𝒔 & 𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎 𝑬𝒏𝒈𝒊𝒏𝒆𝒆𝒓𝒊𝒏𝒈 Docker, Kubernetes, Helm, CI/CD, On-Prem & Air-Gapped Deployments 𝑫𝒂𝒕𝒂 & 𝑰𝒏𝒇𝒓𝒂𝒔𝒕𝒓𝒖𝒄𝒕𝒖𝒓𝒆 PostgreSQL, Redis, Cloud (AWS, GCP) If you want a partner who builds, ships, and supports—let’s connect! Sincerely, Jeff

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

40%

Portfolio

Portfolio

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5.0 · 4 Reviews
4 Reviews
D

Former Client (inactive)

5.0

$1,000 USD

1 month ago

BCI-Robotic Arm Integration Specialist

Does phenomenal work and gets job done. Amazing

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W
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Werner F.

5.0

$200 USD

2 months ago

Precision Outdoor Person Tracking System

He understood the requirements and delivered over and above what was required

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Boris R.

5.0

$60 USD

4 months ago

Looking for RAG Engineer

Good developer. Chong C has high ability in AI. Also He has good speed and high quality in working. Wanna hire again if I meet AI problem. Thank you

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D

Former Client (inactive)

5.0

$115 USD

5 months ago

React Table Filter Upgrade

He delivered the work way faster than I expected without cutting any corners. If you need someone reliable who just 'gets it' right away, look no further

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Experience

Full Stack Developer

Jan, 2025 - Oct, 2025

9 months

DevSamurai Inc

Jan, 2025 - Oct, 2025

9 months

I architected a RAG platform for users. I used Pinecone and LangChain hybrid search to reduce hallucinations by forty percent. I migrated Django monolith to EKS microservices. I optimized GPU inference scaling and cut cloud costs. I used WebSockets and Redis to design a React AI Copilot. I achieved sub-200ms time-to-first-token streaming. I used LoRA/PEFT adapters to fine-tune Llama 3 models. I improved domain-specific query accuracy.

Jan, 2025 - Oct, 2025

9 months

Education

New York University

2018 - 2022

4 years

Bachelor of Science in Computer Science

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United States

2018 - 2022

4 years

Certifications

US English - Level 2

US English

US English - Level 1

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Preferred Freelancer Program SLA

US English - Level 3

US English

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