Sok Leng Chan portrait
Currently an Extern @Pfizer

🟢 Open to work

Aspiring Professional in Cybersecurity & Marketing analyze

I'm on a journey to enhance my skills and explore new career paths in technology and marketing, ready to make an impact.

Work samples

Dive into my hands-on projects and externships, where I analyze data and develop strategies to enhance business performance.

  • Breaking Games E-Commerce Data Analysis & Strategy Externship
    Breaking Games E-Commerce Data Analysis & Strategy Externship
    Breaking Games logo

    Breaking Games · Jun 2026 · ✅ Verified by Extern

    Breaking Games E-Commerce Data Analysis & Strategy Externship

    A Breaking Games externship focused on analyzing real e-commerce marketing and sales data to understand online purchase behavior and conversion funnels.

    Top performerDigital MarketingSalesPresentation Skills
  • Hydroficient IoT Cyber Defense Externship
    Hydroficient IoT Cyber Defense Externship
    Hydroficient logo

    Hydroficient · Aug 2026 · ✅ Verified by Extern

    Hydroficient IoT Cyber Defense Externship

    Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

    Top performerPython ProgrammingData AnalysisThreat ModelingDashboard Development

About me

I'm on a journey to enhance my skills and explore new career paths in technology and marketing, ready to make an impact.

Cybersecurity fellow with a Bachelor's degree in Economics, eager to strengthen my resume and enhance my job competitiveness. Currently, I'm exploring opportunities in the cybersecurity, marketing analyst sectors to build a solid foundation for my career.

Externships

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

Pfizer

Experience

Cantonese Instructor

Hills Learning - Remote · Feb 2023 – Present

Hydroficient IoT Cybersecurity Extern

Extern · Jun 2026 - Aug 2026

E-Commerce Data Analysis & Strategy Externship

Breaking Games · Mar 2026 – Jun 2026

Relationship Banker

East West Bank | Cathay Bank – Brooklyn, NY · Apr 2022 – Oct 2023

Accounting Teacher

Chan Sui Ki Perpetual Help College · Sep 2019 - Aug 2020

Education

The Knowledge House

Innovation fellowship: Cybersecurity track

UDACITY

AWS AI Practitioner Challenge Certificate · Class of 2026

NPower

Application Development Program · Class of 2025

Syracuse University

Certificate of Advanced Study in Data Science · Class of 2024

Hunter College (CUNY)

Bachelor degree in Economics, Minor in Mathematics · Class of 2013

Skills

Data AnalysisGoogle AnalyticsMarketing StrategyE-CommerceIoT Cyber DefenseAccountingAIAI Workflow DesignAI Powered AnalyticsAI Agent DevelopmentAWSBusiness StrategyChatGPTClaudeCommunicationCollaborationCritical ThinkingCSSCybersecurityCybersecurity Fundamentals

✅ Verified by Extern

Breaking Games E-Commerce Data Analysis & Strategy Externship

A Breaking Games externship focused on analyzing real e-commerce marketing and sales data to understand online purchase behavior and conversion funnels.

Digital MarketingSalesPresentation Skills

Overview

The work analyzed marketing and sales datasets from Google Analytics, Meta Ads, and Shopify to map customer journeys and surface conversion issues. Deliverables included cleaned exports, charts comparing ad metrics, a Claude-generated funnel dashboard, and notes on data-cleaning needs. The work was awarded Top Performer by Breaking Games.

Breaking Games E-Commerce Data Analysis & Strategy Externship
Google Slides
Access

What I've accomplished

I produced cleaned data exports and comparative visualizations (ad metrics, traffic sources, Shopify sales), iterated Claude prompts to generate a consolidated e-commerce funnel dashboard, and documented data-cleaning steps and insights for future analysis.

Top performer

Project breakdown

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✅ Verified by Extern

Hydroficient IoT Cyber Defense Externship

Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

Python ProgrammingData AnalysisThreat ModelingDashboard Development

Overview

The work examined a 500-room hotel's water management IoT system, producing threat models, an instrumented MQTT pipeline, and a security assessment that measured defenses. Deliverables included certificates and provisioning policy, replay-attack test results, a real-time dashboard, and an integrated Isolation Forest. The work was awarded Top Performer by Hydroficient.

Hydroficient IoT Cyber Defense Externship

What I've accomplished

I delivered a professional threat model with top findings, a runnable Python sensor log generator, an instrumented MQTT topic map, TLS/mTLS configuration with measured latency, a Device Provisioning Policy, replay-attack test results, a slide deck and PDF dashboard, and an integrated Isolation Forest anomaly detector.

Top performer

Project breakdown

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AI Job Search & Resume Assistant (Claude-based AI Agent)

Engineered a multi-agent AI system using Claude to automate the end-to-end job application workflow. Developed specialized agents for job matching, resume tailoring, ATS scoring, and recruiter review. Integrated public ATS scoring APIs and iterative AI feedback loops to optimize resume quality. Auto

Overview

AI Job Search & Resume Assistant (Claude-based AI Agent)
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Cyberlab_Portfolio

Developed the foundational cybersecurity knowledge including OSI layer, Brute Force detector , exploitation frameworks, web application security, digital forensics.

Overview

Cyberlab_Portfolio
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E-Commerce Web App

Developed a responsive e-commerce site with dynamic search, cart, and checkout features. Collaborated in an Agile workflow to plan, debug, and deploy updates efficiently.

HTMLCSSReactJavaScriptAPI Integration

Overview

E-Commerce Web App
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✅ Verified by Extern · ⏱️ In progress

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

Prototype AI-powered document intelligence with Pfizer—using OCR, LLMs, and RAG to automate real enterprise PDF workflows and build a standout portfolio project.

AI & MLPythonDocument IntelligencePresentation Skills

Overview

The externship developed a prototype pipeline that combined OCR, LLMs, and RAG methods to extract and synthesize information from enterprise PDFs. The work included researching LLM fundamentals, designing how models process and generate text, and documenting tradeoffs between model types and prompting strategies.

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

What I've accomplished

I produced written analysis explaining LLM tokenization, vectorization, Transformer self-attention, next-token generation, and the roles of pretraining, fine-tuning, and human-preference training, including noted model failure modes.

Project breakdown

I explained how LLMs tokenized text into vectors, used the Transformer self-attention mechanism to model context, and produced outputs by predicting next tokens. I described pretraining on large corpora, followed by fine-tuning and human-preference training, and noted that models can still err.

View all work