Available for opportunities · Singapore

Alexander Tok

Machine Learning & Data Science Engineer

Industrial & Systems Engineering graduate delivering end-to-end ML solutions — from data extraction to model deployment. I combine Discrete Event Simulation, MLOps, and applied AI to optimise decision-making and business processes.

0 Manhours cut with AI reporting
0 Downtime reduced via AWS failover
0 Accuracy on resume-analysis LLM
0 Building ML & data systems
01

About

I'm a detail-oriented engineer who graduated with Honours (Distinction) in Industrial & Systems Engineering from the National University of Singapore, with a Minor in Data Analytics. I care about turning messy, real-world data into models and systems that people actually rely on to make decisions.

My experience spans the full ML lifecycle — building CI/CD pipelines and deploying models at Global OneClick, automating cloud failover at ConcreteAI, and now driving AI-assisted reporting and process improvement as a Global Supply Chain Graduate at Dyson. Alongside work, I co-founded an AI-driven travel platform and led explainable-AI initiatives at the NUS FinTech Society.

I'm an AWS Certified AI Practitioner and I'm most energised by problems that sit at the intersection of operations research, machine learning, and clear communication.

02

Experience

Sep 2025 — Present Singapore

Global Supply Chain Graduate · Dyson

New Product Operations (Programmes)

  • AI-Assisted Reporting: Built an AI-assisted reporting platform for project reporting, reducing manhours by 40%.
  • Process Improvement: Mapped operational processes to surface inefficiencies and initiated projects to remove them, improving inter-team collaboration.
Jan 2024 — Jul 2024 Shenzhen, China

Algorithm Engineer Intern · Global OneClick

  • Ad Retargeting Model: Deployed Random Forest & XGBoost to decrease customer churn by 15% and increase engagement by 25%.
  • MLOps Pipeline: Created a CI/CD pipeline for model deployment and built interactive dashboards, improving model transparency by 20%.
  • A/B Testing: Segmented Google & Meta Ads audiences to test advertising effectiveness.
May 2023 — Dec 2023 Singapore

IoT Intern · ConcreteAI

  • Data Recovery Workflow: Automated failover using AWS Lambda, reducing downtime by 60% and improving reliability.
  • Big Data Processing: Revamped the Big Data ETL & analytics platform, cutting platform costs by 20%.
Aug 2024 — May 2025 NUS FinTech Society

Technical Lead · NUS FinTech Society

  • Explainable AI for Credit Scoring: Led adoption of transparent ML models, boosting accuracy to 86% and stakeholder trust.
  • Mentorship & Pipelines: Mentored juniors in building robust data pipelines and evaluating algorithm performance.
  • Research: Bitcoin fee forecasting using Bayesian Inference.
03

Projects

Startup · AI Jan 2024 — Present

AI-Driven Travel Planning Platform

Co-founded through NUS Overseas Colleges — an AI platform that plans trips end-to-end. Awarded the NUS Venture Initiation Programme Grant for product innovation and market potential.

LLMProductRecommendation
Hackathon · NLP Jul 2024

Resume Analysis Tool

Built for the BACT × X0PA HR AI Hackathon — a resume analysis system using LLMs, TF-IDF, and spaCy that predicts candidate suitability with 90% accuracy.

LLMspaCyTF-IDFNLP
Research · ML 2024 — 2025

Explainable AI for Credit Scoring

Led at the NUS FinTech Society — transparent, interpretable ML models for credit scoring, raising accuracy to 86% while improving decision efficiency and trust.

Explainable AIscikit-learnCredit Risk
Research · Bayesian 2024 — 2025

Bitcoin Fee Forecasting

Research paper forecasting Bitcoin transaction fees using Bayesian Inference, modelling uncertainty in a volatile, high-variance fee market.

Bayesian InferenceTime SeriesForecasting
04

Skills & Tools

Data Science & ML

scikit-learnPyTorchTensorFlowXGBoost Random ForestExplainable AILLMRAG Prompt EngineeringComputer VisionTime SeriesNLP

Languages

PythonSQLRJava C++JavaScriptHTMLCSS

Tools & Platforms

GitREST APIsDockerPostgreSQL AWS (Lambda · S3 · DynamoDB)Google CloudTableau Power BIMATLABExcel VBAFlexsimSimPy

Analytics & OR

Discrete Event SimulationOptimizationOperations Research Supply Chain AnalyticsStatistical InferenceData Visualization
05

Education & Certifications

B.Eng. (Honours with Distinction), Industrial & Systems Engineering

Aug 2021 — Aug 2025

National University of Singapore · Minor in Data Analytics

GPA 4.2 / 5 Dean's List AY24/25 Sem 2 Honours (Distinction)

Relevant coursework: Machine Learning (Neural Networks, Decision Trees, Random Forest), Statistical Inference, Database Management, Optimization & Operations Research, Data Structures & Algorithms, Data Visualization, Supply Chain Analytics, Discrete Event Simulation.

Certification

AWS Certified AI Practitioner Amazon Web Services · Jul 2025 ID: b0b93db8-5131-42b6-8cae-a3410d80c7d0
06

Let's build something.

I'm open to roles and collaborations in machine learning, data science, and analytics. The fastest way to reach me is email.

alexander.tokjs@gmail.com