Chia Kang Jin

• Drove data analytics initiatives across the organization's Business Intelligence stack
  • Some domains covered were cost tracking, data governance guidelines, incident reporting, etc.
  • Created an ETL pipeline (AWS Glue/Python) that processed 20M+ unstructured log records in days instead of weeks for AI self-healing analysis
  • Created AI tooling for existing products (MCP servers, automated dependency updates with Devin AI Agent) in order to assist in wider company efforts
• Maintained the test automation pipeline for web / mobile automation, serving 300+ companies
  • Architected solutions for email delivery, PDF generation
  • Debugged native selenium webdriver and chromium internals for stabilizing browser automation
  • Active development on chrome extensions for recording and replaying browser actions
  • Reduced mobile device wait time by ~50% by pre-warming them before actual test automation
• Assisted in building the test automation pipeline for a desktop application
  • Drove the development of the scheduling feature
  • Deployed an self-serve infrastructure provision API (Pulumi) with necessary AWS IAM permission isolation
  • Prototyped a natural language powered AI Agent for mobile test automation, navigating challenges in prompt adherence, element location and model quality / selection

Tech stack
Frontend: Typescript, React, Redux, Apollo GraphQL, Electron, Chrome Extension API, Appium
Backend: Ruby on Rails, GraphQL, Postgres, SQLite
Deployment: Github Actions / CircleCI
QA: Jest, Testing Library, Mock Service Worker, RSpec, Playwright, Autify
Infrastructure: AWS (ECS / EKS) / Kubernetes / Pulumi / Terraform
Analytics: Holistics, Athena, Redshift, Airbyte

• Coordinated between 4 different departments with 20+ people to build an in-house analytics platform
  - Departments: Data Pipeline, Data Tracking, Data Consulting, Product Management
  - Main Features: Form Builder, Query Builder, Multiple timezone support
• Helped to maintain the CI/CD pipeline and support the transition to Kubernetes
• Took ownership of the logging architecture
• Mentored other developers and participated in productive code reviews
• Improving the QA process with automated testing
• Migrated the codebase over to Typescript
• Developed an ESLint plugin for GraphQL linting

Tech stack
Frontend: React, Redux, MaterialUI, Typescript, Tailwind
Backend: node.js, GraphQL, hapi.js, MongoDB, Redis, RabbitMQ
Databases: Presto, Druid, Elasticsearch
Scripting: Python 3, Jupyter Notebook
QA: Jest, Cypress, Testrail
Infrastructure: Jenkins, Docker, CloudFoundry, Kubernetes
Software Development: JIRA, Confluence, Bitbucket

• Solely maintaining a web app for Proceq, which produces tools for non-destructive testing (NDT) 
  - Worked on chart visualizations with Highcharts, geo-analytics with Google Maps
  - Built an offline HTML-based report with jsdom
• Collaborated on the Screening Eagle platform, a management tool for the construction industry
  - Constructed a dynamic form builder for issue tracking
  - Worked with PDF rendering with PSPDFKit and 3D rendering with three.js
• Spearheaded an integrated testing effort that brought bugs down to a near-zero level
• Integrated i18n into the web app
• Implemented a deployment pipeline for a one-click build

Tech stack
Frontend: React, redux, redux-saga, recompose, ant.design, stylus, storybook, Webpack 4, Flow
QA: Jest, Cypress, Sentry
Infrastructure: Gitlab CI, Jenkins pipelines, Docker, AWS
Software Development: Gitlab, JIRA

• Built the public-facing and internal admin site for a sporting events platform
• Collaborated with the backend for a seamless API integration
• Continuously collected and iterated on design feedback to improve usability
• Constantly monitoring integration tests and dashboard metrics to ensure site uptime

Tech stack
Frontend: React, Redux, MobX, Apollo, Bootstrap, SASS, JSPM, Webpack 2, Typescript
QA: Mocha, Selenium Webdriver, Webdriver.io, Browserstack
Backend: CakePHP, GraphQL, Jenkins, Ubuntu 14.04, Linode
Software Development: Github

• Built a whitelabel CMS SaaS solution catering to 50+ travel agents
• Migrated 35K customers, 1K products and 5 clients to our CMS, preserving DNS and email functionality 
• Automated the deployment of development and production servers with Puppet
• Built a proof-of-concept logging framework based on Elasticsearch 

Tech stack
Web: Codeigniter 2, JQuery
QA: PHPUnit, Selenium Grid 
DevOps: postfix, Nginx, Jenkins, AWS, Puppet, CentOS6
Software Development: In-house SVN repository

• Developed a Wordpress e-commerce site for luxury goods, creating and modifying plugins as necessary
• Built a standalone web-based point-of-sale (POS) system to scan from a webcam and print receipts

• Built a prototype of a social media site on Symfony 2

• Electives in Programming and Linguistics