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Kevin – React, Typescript, Python, experts in Lemon.io

Kevin

From South Korea (UTC+9)flag

Full-stack Web Developer|Senior

Kevin – React, Typescript, Python

Kevin is a senior full-stack developer with 12 years of experience, specializing in Python and React, while also bringing a strong background in .NET. He is a versatile generalist, skilled across multiple programming languages and frameworks, known for his problem-solving abilities and adaptability. Kevin thrives in small to medium-sized teams (5–8 members), quickly tackling diverse challenges. He is committed to continuous learning and growth, with a focus on advancing his expertise in database internals and advanced AWS practices to become an even stronger developer.

14 years of commercial experience in
Communications
Consulting services
Customer support
Fundraising
Govtech
Healthcare
Healthtech
Insurance
Mental healthcare
Nonprofit
CRM
Content management
Main technologies
React
10 years
Typescript
10 years
Python
4 years
.NET
10 years
Additional skills
C#
Flask
AWS
ASP.NET
VB.NET
JavaScript
Angular JS
Direct hire
Possible
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Experience Highlights

Senior Software Engineer
Jun 2021 - Jan 20253 years 7 months
Project Overview

A digital healthcare startup dedicated to improving mental well-being by providing accessible, personalized mental health support and fostering healthier lifestyles through innovative online services.

Responsibilities:
  • Built a dynamic form builder enabling non-technical staff to create and manage assessments and forms;
  • Migrated the codebase from untyped to fully typed TypeScript;
  • Developed and integrated a React-based design system;
  • Established a style guide and implemented linting rules to ensure consistent code quality;
  • Delivered multiple frontend and backend features for an internal electronic health record (EHR) system, incorporating HIPAA compliance requirements;
  • Created a synchronization process between the internal database and an external Webflow service;
  • Mentored junior developers across frontend and backend development areas.
Project Tech stack:
React
Typescript
Python
Flask
Lead Software Engineer
Nov 2017 - Apr 20213 years 4 months
Project Overview

A global organization specializing in delivering comprehensive solutions designed to support and empower progressive businesses worldwide.

Responsibilities:
  • Migrated the main project from an ASP.NET Web Site to an ASP.NET Web App;
  • Implemented a React-based design system;
  • Mentored teams through the transition from ASP.NET frontends to React frontends;
  • Acted as a liaison between engineering and design teams, ensuring effective communication and alignment;
  • Designed and delivered multiple full-stack features.
Project Tech stack:
ASP.NET
C#
VB.NET
React
Typescript
Production Support Engineer
Mar 2016 - Nov 20171 year 7 months
Project Overview

A digital agency specializing in working with the Sitecore CRM, delivering custom website solutions tailored to brand needs.

Responsibilities:
  • Maintained and extended multiple multilingual websites built on Sitecore 8.0 and 8.1 with React.js (Redux), Angular.js, and Backbone.js frontends;
  • Implemented and enhanced multi-language search solutions using Apache SOLR and Coveo;
  • Mentored developers by addressing technical questions, delivering presentations on emerging technologies, and providing guidance during new project implementations;
  • Supported all aspects of site operations, including code maintenance, server upkeep, performance monitoring, and resolution of critical issues.
Project Tech stack:
C#
ASP.NET
Typescript
JavaScript
Software Engineer
Jan 2015 - Mar 20161 year 1 month
Project Overview

A rapidly expanding managed care organization specializing in providing healthcare services for Medicare beneficiaries.

Responsibilities:
  • Led development of a customer-facing portal enabling external providers to securely access insurance information and submit referrals;
  • Directed a feedback-driven redesign of the portal, increasing customer satisfaction and utilization by over 50%;
  • Built multiple internal tools using ASP.NET and Angular.js;
  • Designed and implemented policies for the company’s software development lifecycle.
Project Tech stack:
ASP.NET
Angular JS
C#
JavaScript

Languages

English
Advanced

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