James Lin

Full-stack Engineer • Backend Engineer • Frontend Developer • Columbus, OH, US • Open to relocation

Web Applications

Database Design

Javascript

MERN

Software Development

Web Development

Node.js

Django

Flask

Python

React

Available for hire fromNegotiable

Full-Time Roles

Contracts

Accomplished and detail-oriented Full Stack Engineer with expertise in JavaScript and a deep strong understanding offront-endtechnologies including HT

As a Senior Video Streaming Engineer, I bring over a decade of experience in designing, implementing, and maintaining advanced video streaming systems. I specialize in an array of video streaming technologies, video codecs, and emerging technologies including HLS, MPEG-DASH, RTMP, WebRTC, and Gstreamer.

Projects

WebRTC

Video Conference Web App which users can have a video call, audio call and chat. There recording option, screen sharing option, real time chat option and live captions are implemented.See More

Centralized CCTV Management and AI Forensic Analysis SaaS

The goal of this project was to create a powerful Software as a Service (SaaS) application designed to address the challenges of managing and monitoring numerous CCTV cameras across various properties The primary objective was to provide a centralized solution that allows security professionals to efficiently oversee all cameras in real-time while incorporating AI forensic analysis capabilities. This platform aimed to enhance security, incident detection, and post-incident forensic analysis.See More

SSAI

Ad insertion on VoD using Mediaailor

Work History

Back End Developer

ButterflyFull-time EmployeeJul 2020 - Feb 2024 • 3 yrs 8 mos•Ensured the technical feasibility of UI/UX designs for React and Angular supply chain applications, applying Fitts’ law for intuitive placement and sizing of interactive elements. •Utilized accessibility testing tools and heatmaps to measure user interaction speed with components, enhancing user experience through the application of motion design principles. •Built and maintained job moderation dashboard and user-facing applications using Python Flask and Angular 13, successfully upgrading the frontend from Angular 13 to 15. •Developed a Chrome extension using React to extract company lists from scrapped data provided in Python Flask, integrating API to communicate with the Admin Panel and managing global state variables using Redux and Context API. •Created and optimized Angular services, directives, bindings, and event handlers for radio station user UX, and developed MEAN stack inventory and ordering applications.

Frontend Developer

U.S. Business Holdings, Inc.Full-time EmployeeOct 2017 - Jun 2020 • 2 yrs 9 mos•Created interactive visualization components for market data projection and analysis using React and D3 charts. •Developed unit tests and component snapshot tests utilizing Vtest •Conducted client-side data transformations of large datasets for display in interactive SVG charts. •Developed dynamic forms for market data analysis, aiding food and beverage companies in making projections about product/factory capacity, cost, and more. •Enhanced user interaction by creating dynamically populated data filters with various UI elements like dropdowns, checkbox groups, input fields, and sliders. •Utilized Chrome DevTools for identifying and resolving front-end rendering performance issues and computationally intensive bottlenecks. •Developed a user-friendly front-end for a streaming music service, integrated with a WordPress blog system, improving UI/UX and smoothing interactions for a seamless music streaming experience. •Contributed to the development of robust JavaScript widgets for third-party publisher sites, tackling challenges like nested iframes, asynchronous ad loading, mobile scaling issues, and errorhandling. •Provided API endpoints using Node.js/Inversify and MongoDB, contributing to the backend development. •Developed a comprehensive admin platform from scratch using React, Node.js, and Mongoose for managing the platform’s database entities and users. •Gained experience in using ASP .Net Core with C# and utilized Entity Framework Core (EF Core) as an object-relational mapping (ORM) tool for efficient database interactions. •Worked with Avalonia UI with .Net and Mono platforms for crossplatform application development. •Implemented complex UI components using React/TypeScript and SCSS, and improved the UX by creating several DnD-based components. •Authored scripts to manipulate and utilize data from various sources, enhancing the application’s overall functionality.

Back End Developer

BON2 Media ServicesFull-time EmployeeSep 2016 - Sep 2017 • 1 yr 1 mo•Developed and maintained dynamic user interfaces for web applications using React.js, implementing components, forms, events, keys, router, animations, and Flux concept. •Created robust applications utilizing React.js and Node.js libraries, NPM, and gulp directories to generate desired views and ensure proper URL rooting via Flux. •Wrote application interface codes using JavaScript in alignment with ReactJS workflows and Redux library. •Utilized various predefined components from NPM (Node Package Manager) and Redux library to implement multiple front-end screens. •Implemented Redux Saga’s with actions and reducers for synchronizing API calls. •Developed and maintained several RESTful API web services, producing both XML and JSON, leveraged by web and mobile applications. •Documented REST APIs using Swagger2 API, detailing the services involved in the application. •Led the design and development of RESTful APIs and services to interact with the data storage layer. •Developed a Microservice for externalizing application properties and encryption using Spring Cloud Config. Used Spring Batch for POJO-based development approach, contributing to the efficient batch processing to extract data from the database and load into corresponding Loan App tables.

Education

Tsinghua University

Bachelor's Degree, Computer scienceApr 2012 - Mar 2016

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