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Welcome to my portfolio!

I am Hyeonah

I'm a Hardware Integration Engineer, ensuring EV chargers integrate seamlessly with ChargeLab's software. I'm diving into software development to create user-focused solutions that solve real problems.

This portfolio showcases my journey through various personal and team projects. Join me as I learn, evolve, and create in the world of software development!

projects

Jul 2024 - Present

finance tracker

#React.ts

#TypeScript

#Zustand

#Node.js

#Express

#MongoDB

Finance Tracker helps users track income and expenses. It offers multiple viewing options, filters by date, and provides a clear financial summary. Future updates will include budgeting, goal tracking, and visual insights for better financial management.

Sep 2022 - Feb 2023 (6 months)

go together travel agency

#Next.js

#TypeScript

#Redux toolkit

#MUI

#Java

#Spring

Go Together is a travel booking platform designed for seniors, making vacation planning easy and fun. You can take a quick survey to get personalised travel package recommendations, ensuring every trip matches your interests perfectly.

May 2022 (2 weeks)

Fresh Tomatoes

#JavaScript ES6

#Fetch API

#SCSS

Fresh Tomatoes is a fun, easy-to-use Movies & TV search website inspired by Rotten Tomatoes. Powered by the OMDb API, you can quickly find movies, TV shows, and celebrities, with detailed info and infinite scrolling on the results page.

June 2022 - July 2022 (1 month)

tumbler shop (Korean)

#Vue.js

#Vuex

#SCSS

Tumbler Shop is a fun online marketplace where you can buy tumblers with virtual currency. You can enjoy easy browsing and seamless transactions. Plus, the robust admin tools make managing inventory, tracking sales, and handling transactions a breeze.

Explore more of my work on GitHub

to see additional projects, code samples, and contributions.

about me

My career journey has taken me from building websites at a marketing agency to QA testing electric vehicle chargers at a SaaS company. Now, I'm excited to transition that experience into creating innovative and functional web applications.

I love turning real-world needs into impactful code, using my technical skills and talent for problem-solving. Here are some of the tools and technologies I work with:

JavaScript, TypeScript

React.js, Next.js, Redux, Zustand

React Testing (Jest)

Node.js, Express.js

HTML, CSS, Sass/Scss

Bootstrap, Material UI, Tailwind CSS

Git, REST-ful APIs, Postman

Agile, Confluence/Jira

my journey

2024
2023
2022
2022
2021
2019
2019
2017

Hardware Integration Engineer

@ ChargeLab

Sep 2024 - Present

Led QA testing for EV chargers to meet OCPP 1.6/2.0.1, CTEP, and Plug and Charge standards
Built Python/Django/JavaScript automation web tool, cutting QA testing time from 4 weeks to 1 day
Reduced session failures by 30% by adding timeout logic and analyzing charger data
Developed a self-serve tool with clear UX, boosting capacity from 40 to unlimited units
Diagnosed field issues by reviewing OCPP logs and charger-backend behavior

let's work together

Let's turn ideas into reality!
Reach out and let's create something amazing together.

Designed & Built by hyeonahc

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