Hi! I am

Haeun Ko

I'm a

About

About Me

I am a skilled backend developer with one-year experience in developing database access control software and a bachelor's degree in cyber security.

During my work, I had the opportunity to prove that I have a high ability to design and develop long-term projects. In particular, I have worked extensively with C/C++, and have developed advanced skills in these languages. I also have experience with Python and Golang, which I leveraged to build modern and scalable systems.

My dedication to quality and innovation has earned me recognition from my company, and I am proud to have received an award for my contributions to several important projects. If you are looking for a skilled backend developer who can deliver high-quality solutions, let's connect.

  • Name: Haeun Ko
  • Address: Mississauga, Ontario, Canada
  • Email: haeun.ko99@gmail.com
  • Phone: +1 (437)838-0267
  • Github: https://github.com/hekoh99
0 Problem Solving
0 Working Days
0.0% Issue Resolution Ratio
0 Annual Git Commits

Education

Mar, 2018-Feb, 2023

Bachelor of Cyber Security

Chung-Ang University

GPA: 3.95/4.5 (Converted GPA: 94.50/100)
Graduation Standing: CUM LAUDE
Courses: SW Programming, Algorithm, Object-Oriented Programming, Database Design, Computational Thinking and Problem Solving, Hacking and Malware Analysis, Information and Communication Technologies

Sep, 2021-Jan, 2023

École 42 Courses

École 42

Completed advanced coursework in Unix systems and C/C++ programming.
Enhanced collaboration skills and deepened programming expertise through a rigorous peer-learning framework.

Jul, 2021-Sep, 2021

IoT/UAV Technology Seminars

Purdue University

Had a seminar on IoT and UAV technology with professors and researchers at Purdue University.
Collaborated with the research team to develop UAVs using the YOLO machine learning model over the course of a month, culminating in the co-authorship of a research paper.

Work Experience

Feb, 2023-Apr, 2024 (1 Year and 3 Months)

Software Developer

PNP Secure Ltd.

A leading firm in database security solutions, specializing in advanced database access control technologies

Tech Stack

C/C++, Java, MySQL, PostgreSQL, MSSQL, Golang

Role
- Developed new features and maintained the stability of the core modules.
- Led performance improvement projects, overseeing and enhancing both code and query performance.
- Designed and implemented a program capable of handling high-volume traffic, ensuring scalability and efficiency.
- Contributed to increased revenue by developing new features and maintaining a high issue resolution rate.

Jul, 2020-Sep, 2020

Web Developer

Gochin Co.

A startup developing software that connects student mentors with mentees

Tech Stack

Python, Django, Javascript, CSS, HTML

Role
- Participated in both front-end and back-end development
- Used Django framework of Python

Skills

Usage

Languages

TOP 3
C++
40%
Python
24%
Java
15%

Frameworks & Libraries

TOP 3
STL
40%
Boost
35%
React
12%

Tools

TOP 3
Git
30%
Docker
25%
Wireshark
20%

Proficiency Level

C++
Advanced
Python
Advanced
Java
Intermediate
Docker
Intermediate
SQL
Intermediate
Golang
Intermediate

Projects

Feb, 2024-Apr, 2024

Developed Message Queuing Module

PNP Secure Ltd.
Tech Stack : Golang, Go-routine

• Designed and developed a message queue program managing communication between modules.
• Used Golang’s go-routine to handle communication for over 10,000 processes, reducing system load and enhancing efficiency.

Sep, 2023-Dec, 2023

Developed Automatic Log Repair System

PNP Secure Ltd.
Tech Stack : C++, MySql

• Designed and Developed an automatic log repair system to enhance system reliability.
• Ensured uninterrupted logging of program data even during database failures.
• Thanks to this feature, successfully secured major client contracts, contributing to the company’s sales revenue.

Oct, 2023

Led Performance Enhancing Projects

PNP Secure Ltd.
Tech Stack : C++, MySql

• Reduced execution time from 4 seconds to 0.02 seconds by optimizing key queries. (improvement of 99.5%)
• Optimized periodic module health checks, reducing execution time by 80%.

Mar, 2024-Apr, 2024

Examined Protocols and Packet Structures in NoSQL Databases

PNP Secure Ltd.
Tech Stack : Couchbase, Open Search, Snowflake, Apache Phoenix, Docker

• Built various NoSQL databases and analyzed packets of DDL, DML, DCL, and DQL queries and their results.
• Contributed to the development of new NoSQL products as part of research aimed at entering the NoSQL market.

Projects

Side Projects

Genuinely enjoy coding and never stop learning

Color Diary Website

A Website for Recording Each Day with a Color

Mini Shell Project

Developed my own command-line shell

MiniRT Project

Developed my own ray tracer with miniLibX

Bokeh Project

Interactive Media Art Using p5.js

AI-Bot that plays 2048

AI-bot playing 2048 Using Four Heuristics

Othello Game

Implemented an Othello Game in C++

Contact

Contact Me

Ready to tap into a rising star's potential? Let’s connect

Address

Mississauga, Ontario, Canada

Contact Number

+1 (437)838-0267

Instagram

imyourenergee