Inseo Baek
Software Developer
Seoul, Korea (GMT+9)
6+ years of experience building and shipping core product features for SaaS and e-commerce businesses.
My name is Inseo and I am a software developer passionate about website and mobile development. I have been developing professionally for more than 6 years but tinkering since a kid. I started in tech with freelance services and part-time IT support during high school.
My job history ranges from working for big companies, such as Deloitte Digital, to building a SaaS product from scratch within a startup. Through these experiences, I have learned to contribute everywhere in the stack, although my strongest skills are in front-end development.
My current project is working on my bootstrapped digital agency (studiorach.com) where I help e-commerce and SaaS businesses build faster web applications and boost conversion rates through software development services.
Work Experience
08/2021 — PRESENT
Partnered with SEO marketing agencies on projects such as building SSG pages (incremental) using Next.js and refactoring large-scale e-commerce codebases on WordPress and Shopify resulting in a 20% improvement in profit
Created and deployed a custom plugin that connects to third-party GraphQL API and webhooks using Node.js and React for a high-traffic e-commerce business with more than $5M annual revenue
Optimized buggy and slow websites through analysis of Core Web Vitals which improved Lighthouse scores to 80+ (mobile) and 90+ (desktop)
Rewrote an outdated jQuery application using React & TanStack query resulting in an optimized CSR website
Demonstrated a mature understanding of the entire development process, including documentation, implementation, and testing of requested features to ensure client satisfaction and profit
12/2018 — 08/2021
Collaborated with the team to build 4 web applications and 1 mobile appointment scheduling app increasing user-base from 0 to 50k+ users using Node.js, React, and React Native
Optimized websites by identifying areas of performance bottlenecks and following recommended practices (memoization, lazy import - React suspense, etc) leading to improved Lighthouse scores
Developed and deployed a Google Cloud Function using Node.js to manipulate user-uploaded images, resulting in a 10% improvement in GraphQL query performance
Responsible for developing the product's core features, such as notification system (email, SMS, push), using Node.js
Forked a version of Draft.js to create our own WYSIWYG editor to be rendered inside a web view
Improved CI/CD process using Visual Studio App Center API and wrote a shell script to upload sourcemaps to Sentry
Demonstrated a mature understanding of the software development cycle (agile, sprint planning, documentation) and responsible for onboarding new members
08/2017 — 12/2018
Helped build an internal application used by Deloitte Digital at their New York office, which uses machine learning to process legal documents using React
Collaborated with external development team to maintain RESTful APIs and website speed for a high traffic e-commerce business with more than $50M revenue through React and Java
Assisted senior software developers in coding an internal employee management system leading to improved Jest test coverage by 20% and CI process that reduced working time
Education
Personal Projects
Shipmentize
A customization design tool built for Shopify using Node.js and React
OProxy
A simple network proxy application on Mac OS X built with Electron
Twitch Chat Bot
A Twitch chat bot that takes attendance using Firestore and Node.js
Hobbies & Certifications
Oracle Certified Associate, Java SE 8 Programmer Certified
Taught coding via Twitch streams, which led to social media channel growth from 0 to 80k+ followers
Volunteer executive of Tech Ladies Toronto chapter
Fluent in Korean, English and French