Daeho Son
Back-end Developer
Seoul
Summary
Backend Server Developer with extensive experience at a healthcare service company serving 300,000+ users. Skilled in development, operations, and issue resolution, with a focus on optimizing performance and ensuring system stability. Known for a meticulous approach and strong analytical skills, consistently ensuring that new features or modifications do not disrupt existing functionality. Capable of delivering high-quality results in fast-paced and ambiguous environments. Proficient in Spring Boot, highly skilled in SQL, and adept at identifying and resolving structural issues to enhance overall system performance.
Overview
4
4
years of professional experience
10
10
years of post-secondary education
Work History
Java Full Stack Developer (Backend Focus)
Healthmax
Seoul, Seoul
03.2023 - 12.2024
- Responsible for managing 5 backend API servers for a healthcare application.
- Integrated third-party APIs from external applications into web platforms.
- Maintained and stabilized the inefficient features of the new servers, identified the root causes, and made improvements to enhance server performance.
- Refined the incorrect data accumulated over six years in the database, contributing to receiving the highest grade, A, from a data validation company.
- Collaborated with many colleagues, including app developers, web developers, kiosk developers, planners, and managers, and have taken a leading role in development across various projects.
Back End Developer
Kisuljadle
Seoul, Seoul
12.2022 - 02.2023
- Created a new project using Java, Spring Boot, Spring Security, and JPA, and implemented JWT token-based login authentication.
- Designed the database ERD and entity structure for various modules, including menu, permissions, members, consultation requests, phone consultation processing, member management, menu management, and permissions management.
QA Test Engineer
Lexinaptics
Seoul
10.2022 - 11.2022
- Used Svelte and developed a basic bulletin board pages.
- Tested the pages and functionalities comprehensively before the server launch and reported any errors.
Full Stack Web Developer
Netand
Seoul, Seoul
06.2022 - 08.2022
- Used JavaScript, ExtJS, SQL, and Java to develop Hiware6, a remote work management web solution.
- Installed solutions for each version, identified and analyzed the causes of errors, and performed maintenance.
- Collaborated with the planning team, database team, and other frontend teams through email to work on development together.
Full Stack Web Developer
Srpost
Seoul, Seoul
03.2021 - 05.2022
- Developed an ERP for public institutions and a user-specific website using the in-house ERP management solution built with Extjs and Java.
- Developed by integrating third-party APIs and external services such as identity verification, public institution personal data, app push notifications
- Developed through direct communication with external API providers, as well as collaboration with project planners, designers, a development leader, and fellow developers.
- In the operational process, I incorporated additional feedback, fixed errors, and performed maintenance and refactoring.
- In the post office bank financial project, I conducted as-is data analysis and applied to-be database implementation.
- Tested the work of 12 developers, compiled and wrote test reports, and handled client feedback and requests.
Education
No Degree - Java SpringBoot Web Development
Gamnam IT Academy
Seoul 08.2022 - 09.2022
No Degree - React Web Development
TIS Technology Education Center
Seoul 10.2021 - 12.2021
No Degree - SQL Tunning
Gangnam IT Academy
Seoul 09.2021 - 10.2021
No Degree - Java Web Development
GoodiAcademy
Seoul 07.2020 - 02.2021
Bachelor of Science - Computer Science
Korea National University of Transportation
Chungju City 03.2007 - 08.2015
No Degree - English Language
Global Village
Calgary 07.2014 - 01.2015
No Degree - English Language
AELC
Clark 03.2014 - 06.2014
Skills
Spring framework
API design and development
SQL databases
JavaScript
Java
API integration
Linux
Excellent communication
Full-stack debugging
Timeline
Java Full Stack Developer (Backend Focus)
Healthmax
03.2023 - 12.2024
Back End Developer
Kisuljadle
12.2022 - 02.2023
QA Test Engineer
Lexinaptics
10.2022 - 11.2022
No Degree - Java SpringBoot Web Development
Gamnam IT Academy
08.2022 - 09.2022
Full Stack Web Developer
Netand
06.2022 - 08.2022
No Degree - React Web Development
TIS Technology Education Center
10.2021 - 12.2021
No Degree - SQL Tunning
Gangnam IT Academy
09.2021 - 10.2021
Full Stack Web Developer
Srpost
03.2021 - 05.2022
No Degree - Java Web Development
GoodiAcademy
07.2020 - 02.2021
No Degree - English Language
Global Village
07.2014 - 01.2015
No Degree - English Language
AELC
03.2014 - 06.2014
Bachelor of Science - Computer Science
Korea National University of Transportation
03.2007 - 08.2015
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