Resume

Seulkiro Park

Full Stack Developer

I build accessible web experiences for all.

About

Hello! My name is Seulkiro. I love building web applications.

I started my journey into web development back in 2018, when I helped my team develop a proof-of-concept web app despite having zero front-end experience, I was there to fill the gap in our front-end skills.

I was hooked instantly. Since then, I've developed apps not just for the companies I've worked with, but also through my own side projects. Examples include puzzle games, ineractive race maps, meal kit e-commerce platforms, productivity trackers, Git repository management tools, and more.

When I'm not at the computer, you'll usually find me making coffee, running, cycling, or reading a good book.

Experience

  1. 2025 — Present

    Full Stack Developer · NestedTree

    • Build and ship high-quality full-stack web applications for diverse use cases (e.g., productivity trackers, meal kit platforms, endurance race maps), emphasizing scalability, code quality, performance, and user experience.
    • JavaScript
    • TypeScript
    • React
    • Next.js
    • Node.js
    • AWS
    • PostgreSQL
  2. 2014 — 2024

    Software Development Engineer · Amazon

    • Led a team of software engineers to design and implement interview screening schedule automation for a high-traffic internal applicant tracking system.
    • Collaborated with leadership to deliver production service integrations and user-facing features, significantly improving internal customer productivity.
    • Developed an ETL upstream service to process and enrich invoice data, enabling machine learning models to detect duplicate invoices with 90% accuracy and substantially reducing manual review effort.
    • Built a feature for Amazon Mobile product detail pages that aggregated real-time data from downstream services to display Prime delivery badges and messages, supporting the company-wide same-day delivery initiative.
    • JavaScript
    • TypeScript
    • React
    • Ruby on Rails
    • Java
    • AWS
    • PostgreSQL
  3. 2009 — 2014

    Software/Firmware Development Engineer · DataCan Services

    • Led development of the primary software suite for high-temperature downhole gauges, enabling real-time monitoring and data analysis for the oil industry.
    • Designed and optimized embedded firmware for wireless data transmitters.
    • Developed real-time logging software to support downhole gauges.
    • .Net
    • C#
    • PIC Assembly
    • MySQL
  4. 2006 — 2007

    Software Development Engineer Intern · SMART Technologies

    • Developed cross-platform libraries and software for SMART electronic whiteboards, enabling seamless integration and enhanced interactivity.
    • C++
    • QT
    • MFC

Projects

  1. Krasing

    A web application that streamlines your daily routine by tracking and managing tasks while challenging you to build better habits.

    • React
    • Node.js
    • Express
    • PostgreSQL
    • Heroku

  2. RepoRay

    An all-in-one code contribution management that unifies scattered git contribution graphs across different service providers, currently supporting GitLab and GitHub.

    • React
    • Node.js
    • Express
    • GitHub/GitLab APIs
    • Stripe
    • Heroku

  3. Gogit

    A DoorDash-inspired web store for meal kits. It featured seamless order and payment systems with real-time inventory management, enriching user experience.

    • React
    • Node.js
    • Express
    • AWS
    • Stripe
    • Heroku
    • PostgreSQL

  4. puzzl.io

    A picture-based puzzle maker, from 3x3 sliding to jigsaw puzzles, featuring hidden surprises like messages, links, and location revealed upon solving to boost engagement.

    • React
    • Node.js
    • Express
    • AWS
    • Stripe
    • Heroku
    • PostgreSQL

Articles

Contact

I'm always open to new opportunities. Whether you have a question, a project idea, or just want to say hello, feel free to reach out (my inbox is always open), and I'll do my best to get back to you!

Say Hello