Available to hire
Hi, I’m Junmin Lee, a mobile product engineer with 5 years of development experience, including around 4 years in mobile app development. I own full product lifecycles from planning to deployment and have shipped real-world apps in startup environments. I excel at cross-functional communication and translating product scenarios into concrete technical solutions.
I am seeking remote freelance, contract, or remote-first opportunities where I can contribute strong product ownership and engineering culture, deliver MVPs quickly, and iterate with data-driven decisions.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Work Experience
Flutter Developer at Fida
December 1, 2024 - December 1, 2025Took full ownership of app development — handled all aspects of the Flutter codebase including architecture, UI implementation, and store release. Implemented AdPop mediation integration for in-app ad monetisation. Participated in product planning including app scenarios and use case definition. Maintained the live app through ongoing updates, crash resolution, and post-release improvements.
Flutter & Node.js Developer at LinkConnection
August 1, 2022 - November 1, 2023Full product ownership of a healthcare app (hospital booking & physical therapy) — delivered Flutter frontend, Node.js REST API (MVP phase), and JavaScript admin dashboard from zero to launch. Designed the Node.js backend structure and MySQL schema for the initial MVP phase. Led developer communication with external vendors and freelancers; coordinated sprint scope and delivery. Contributed to product planning: wireframes, screen specifications, and app policy documentation.
Flutter Developer at Gramium
January 1, 2021 - January 1, 2022Developed features for a dating and social meetup application using Flutter and Firebase. Implemented real-time data sync with Firestore for chat and social features.
Java Backend Developer at RFX Soft
October 1, 2019 - September 1, 2020Built backend APIs and data-grid interfaces for a smart factory MES (Manufacturing Execution System) service. Contributed to web frontend development using vanilla JavaScript.
Education
Associate Degree in Information & Communications Technology at Korea Credit Bank System
January 11, 2030 - April 15, 2026Industrial Engineer Information Processing at Korea Human Resource Development Service
January 11, 2030 - April 15, 2026Network Administrator Level 2 at Korea Association for ICT Promotion
January 11, 2030 - April 15, 2026Qualifications
Java Spring Framework Bootcamp
January 11, 2030 - April 15, 2026Java Spring Framework Bootcamp
January 11, 2030 - April 15, 2026Network Administrator Level 2
January 11, 2030 - April 15, 2026Industry Experience
Software & Internet, Healthcare, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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