Ken Fehling
Verified Expert in Engineering
Front-end Developer
Ken is a full-stack developer with a focus on front-end development with React. He has over 10 years of experience in web dev with HTML/CSS/JavaScript and 7 years with React and Redux. On the back end, he has primarily worked with Node.js, Django, Flask, and SQL databases like PostgreSQL, MySQL, and SQLite. Although not a designer, Ken has worked on UI/UX for several front-end web and mobile projects with UI frameworks like Bootstrap and Material UI, as well as from scratch with CSS and Sass.
Portfolio
Experience
Availability
Preferred Environment
React, Redux, HTML, CSS, JavaScript, TypeScript, Python, Web Development, D3.js, Web
The most amazing...
...application I've developed is a dashboard for data visualization using a React and D3.js front end and a Django and PostGIS back end.
Work Experience
Web Developer
Self-employed
- Worked on many full-stack projects, from the design to the back end.
- Used D3.js and visx to create interactive web-based data visualizations.
- Created a custom CMS and static site generator for freelance clients based on Django, Django admin, and Django-distill.
Senior React Developer
Get It Live LLC
- Consulted on issues such as image optimization and performance.
- Diagnosed performance issues using Chrome and React developer tools.
- Analyzed Next.js bundle and suggested optimizations.
Jinja2/HTML/CSS Developer
Orita Inc.
- Implemented a new front end based on Figma designs for AI business SaaS customers.
- Created Jinja2 templates using Tailwind CSS and JavaScript with a Python and Flask back end.
- Worked with the designer, suggesting improvements to the UI/UX.
Front-end React Developer
Solvent Holdings Corp
- Implemented a new reporting interface, including graphs, tables, and customized filter components.
- Refactored legacy React class-based components to function components with hooks.
- Reduced the number of component re-renders, improving performance and user experience.
- Introduced Storybook to the project and used it for newly created components.
Front-end Web Developer
TLT Media Lab, Stony Brook University
- Designed and developed web-based education software systems for faculty and staff with feedback from stakeholders.
- Created web-based games for researchers to use in studies with student volunteers.
- Helped improve lab operations by introducing version control (Git), Kanban boards, and modern JavaScript tooling.
- Introduced React and helped several team members learn it. Also taught Redux and other related libraries.
Web Development Intern
WUSB
- Began a project to rewrite the radio station’s website and playlist system from scratch, providing a CMS for admins and DJs to use.
- Worked on both the front-end templates and back-end Node.js code.
- Created a CMS with KeystoneJS and MongoDB for radio DJs to add program playlists.
Android Developer
Self-employed
- Published a fairly successful app for video editing built on FFmpeg and Android NDK.
- Implemented dependency injection and created testable modules using Google Guice and RoboGuice.
- Moved into cross-platform development; picked up React Native, beginning a seven-year love affair with React.
Experience
Statistipedia Explore
https://www.statistipedia.org/explorePersonal Website
https://desktop.kenfehling.comNYC Real Estate
https://kenfehling.github.io/nyc-real-estate/The dataset was created using Python, Pandas, Numpy, and Scikit-learn.
Skills
Languages
HTML, CSS, JavaScript, Python, TypeScript, HTML5, Python 3, Java, SQL, Kotlin, Sass, Bash, Bash Script, Pug, JavaScript 5, Clojure, Ruby
Frameworks
Redux, Jinja, Django, MUI (formerly Material UI), Express.js, Flask, Next.js, Tailwind CSS, Android SDK, GeoDjango, Guice, Google Guice, Bootstrap, ClojureScript, Jest, React Native, Jakarta Server Pages (JSP), Ruby on Rails (RoR)
Libraries/APIs
React, Node.js, React Router, REST APIs, React Redux, D3.js, Lodash, jQuery, Pandas, NumPy, Ramda, History API, FFmpeg, React DnD, RoboGuice, Google Play API, Scikit-learn, React Motion, PIL, PiLLoW, Django ORM, Chart.js, React Final Form, SQLAlchemy
Tools
JSX, Redux Thunk, Figma, Git, Trello, Webpack, GitHub, GitHub Pages, Mongoose, Android NDK, Shell, Gulp, NPM, Bower, Mocha, Adobe Illustrator, Google Web Designer, Adobe Photoshop, GitLab, Sentry
Paradigms
HTML DOM, REST, Web App Design, Web UI Design, Responsive Web Design (RWD), Responsive Layout, Kanban, Unit Testing, Functional Programming, Dependency Injection, Search Engine Optimization (SEO), UI Design, Data Science
Platforms
Web, Visual Studio Code (VS Code), Contentful, Linux, Android, Docker, Firebase, Mobile, KeystoneJS, Netlify, Vercel, Raspberry Pi, Heroku, Google Cloud Platform (GCP), DigitalOcean
Other
Front-end, APIs, Web Development, Front-end Development, Dynamic Websites, Web Pages, Responsive UI, Single-page Applications (SPA), Web Applications, Web Programming, Server-side JavaScript, Scripting, SVG, Full-stack, Digital Audio Workstations (DAW), Software, Software Engineering, MERN Stack, Storybook, Responsive Design, Back-end, Multimedia, Documentation, Technical Documentation, Styled-components, Webhooks, CSV, Automation Scripting, Full-stack Development, Visx, GeoPandas, TopoJSON, Higher Order Components, Maps, Geospatial Data, Data Visualization, Relational Database Design, Music, AdMob, Google AdMob, Google Play Store, Mobile UX, Mobile UI, Apps, Gatsby, Bootstrap 4, Shell Scripting, GeoJSON, 2D Games, Vector Graphics, Digital Art, Image Processing, Minimum Viable Product (MVP), Startups, Web Scraping, Video Editing, User Interface (UI), App UI, App UX, Web UI, Web UX, Web App UX, Web App UI, User Experience (UX), Algorithms, Data Structures, Networking, Statistics, Design, API Integration, Server-side Rendering (SSR), Data Processing, Architecture, Sanity CMS, CSS3 Animation, Cloudflare, Algorithmic Trading
Storage
PostgreSQL, MongoDB, Databases, PostGIS, SQLite, Relational Databases, MySQL, Google Cloud
Education
Bachelor's Degree in Computer Science
Stony Brook University - Stony Brook, NY