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  • Accomplishments
    • Resume

    Chad
    Lengefeld

    Hi I'm Chad, a Full Stack Developer and Geographer. I have a B.A. in Environmental Science (Water Resource) and a background in GIS. I work with responsive UI/UX, JS, React, Solidity, Web3, Ruby, and a variety of other technologies and languages. I'm currently focused on smart contract, Web3, and Full Stack Development.

    Learn More

    Coding Projects

    3d Animated Portfolio

    A React App, using Vite, Framer.js

    Stack
    • React
    • Framer.JS
    • TailwindCSS

    Car Showcase

    A React App built on Next.JS using Rapid API, HeadlessUI, TS

    Stack
    • React
    • Typescript
    • NextJS

    Mycelium Network

    Award for 'Top Quality Project', Chainlink Sprink Hackathon 2022. Utilizing hybrid smart contracts and tech including Chainlink, IPFS, Filecoin, and Ceramic. A team of two, we produced a MVP in one month.

    Stack
    • Blockchain
    • Web3
    • Javascript
    • GIS

    Web3 Crypto App

    A React App utilizing Web3, Metamask, Solidity to connect smart contract data to UI. Deployed on the Ropsten Testnet.

    Stack
    • React
    • TailwindCSS
    • Hardhat
    • Web3
    • Metamask

    Confluence Exchange and Token (FLOW)

    In depth blockchain project. Writing / testing Solidity smart contracts with Ganache / Truffle. Interacting with Metamask / UI / Redux, deployed on Ropsten Testnet.

    Stack
    • React
    • Web3
    • Redux
    • Solidity

    Be Like Water NFT Drop

    Utilizing a Bruce Lee painting I did, generated a 25 NFT collection, deployed on Rinkeby.

    Stack
    • NFT
    • Web3
    • Javascript

    Random Quote Machine

    A FreeCodeCamp project using jQuery, Ajax calls, to provide inspirational quotes from famous people via a button, with a built in redirect to tweet the quote.

    Stack
    • Javascript
    • jQuery
    • CSS
    • Ajax

    HTML5 Audio Player

    Browser based Audio player with a playlist.

    Stack
    • HTML5
    • Node
    • jQuery

    Datashaders Map

    Jupyter Notebook experimenting with datashaders and holoviews.

    Stack
    • Python
    • datashader
    • GIS

    DNA Count App

    Python App using Streamlit, deployed to Heroku.

    Stack
    • Python
    • Streamlit
    • Heroku

    CAFO Drought Project

    Capstone Water Resource Project. Analysis of the top Concentrated Animal Feed Operations (CAFO's) in TX, with the most recent drought period index overlaid. Within the work I address the concept of 'Virtual Water Movement' via the Trans-Pacific Partnership (TPP).

    Stack
    • GIS
    • Spatial Analysis
    • SQL
    • Python

    Global Natural Hazards App

    Built on Codepen with JS, MapboxGL, and utilizing API calls for JSON / GeoJSON data. Added a CSS zooming feature. The App displays the top 11 hazards at the current time.

    Stack
    • Javascript
    • CodePen
    • MapboxGL
    • API

    Crypto Ticker

    Cryptocurrency price app that I built using Axios to make API calls. Data was sourced from Cryptocompare.com.

    Stack
    • React
    • JavaScript
    • NPM
    • Axios
    • API

    Geomorphology of Bryce Canyon

    Capstone project defining the geomorphology of Bryce Canyon, located in the Colorado Plateau in Utah.

    Stack
    • GIS
    • Remote Sensing
    • Water Resource

    FreeCodeCamp Data Visualization Project

    Project learning to use d3.js to arrange data graphically, with a mouseOver tool that displays data for the relative pointer location on the bar chart.

    Stack
    • Javascript
    • D3.js
    • CSS

    FCC Technical Doc

    FreeCodeCamp project building a basic technical documentation for Aquaponic Gardening. A simple build learning to integrate a Nav bar.

    Stack
    • Codepen
    • HTML5
    • CSS

    Personal Finance App

    Ruby App using sessions for login and some simple math to extrapolate future expenses.

    Stack
    • Ruby
    • Sinatra

    Enchanted Rock Viewer

    GIS Map Viewer built in Codepen, using Mapbox API and utilizing GeoJSON data.

    Stack
    • Codepen
    • API
    • Mapbox

    Skybox Scenes

    Working with Skybox in 3js. Created revolving viewpoint that can zoom in or out, and start or stop auto rotation of the image.

    Stack
    • HTML
    • CSS

    Fibonacci Spiral

    Utilizing compass CSS3 and keyframes.

    Stack
    • Haml
    • SCSS
    • compass CSS3

    Nintendo Animation

    A Mario animation utilizing keyframes, layering, and timing.

    Stack
    • HTML
    • CSS3

    JQuery Animations

    Experimenting with various Jquery animations and effects.

    Stack
    • Javascript
    • jQuery
    • CSS

    Sunset Animation

    Experimenting with mixins and keyframes to create this visualization.

    Stack
    • Javascript
    • mixins
    • keyframes
    • CSS

    Javascript Animation / Rendering

    Experimenting with mixins, keyframes, terrain rendering visualization and animation timing to create this project.

    Stack
    • Javascript
    • CSS
    • mixins
    • keyframes

    FCC Survey Form

    FreeCodeCamp project involving forms and various inputs, utilizing HTML5 validation checks.

    Stack
    • Codepen
    • HTML5
    • CSS

    Videos

    • Ruby Finance App


    • Natural Hazards API

    Technologies

    • Front-End and Languages

      Experience with Javascript / React.js / Next.js / Ruby / Ruby on Rails / Sinatra / Angular.js / d3.js / API

    • UI/UX

      HTML5 / CSS3 / Animations and Transitions / Blender / Adobe Illustrator

    • Back-End

      Experience with Node.js / Ruby on Rails / Docker / SQLite3 / MySQL / Python / Relational Database / Metadata

    • Blockchain and Equities

      MetaMask and Web3 / Solidity / Ganache / Truffle / HardhatJS / Remix(Ethereum IDE)

      Currently experimenting with ChainLINK, Ethereum, Polygon(matic), XYO smart contracts / API's, with interests in several other projects as well. Experience testing in locally, Kovan, Ropstein, Mumbai(Polygon) networks. Experienced investor/trader in U.S Equities and Cryptocurrency.

    • Geographic Information Systems (GIS)

      OpenMaps / ARCGis / Proprietary Mapping Systems (AppleMaps) / GeoJSON

      Academically trained as a Geographer (Water Resource) with a minor in Geology and certification in GIS. I have a high level understanding of mapping, metadata and databases. Experience with SQL and Python as well as UI/UX principles, project architecture, story creation.

    • Hardware

      I have built and programmed various cryptocurrency mining rigs from the ground up, utilizing Python as well as writing batch scripts for miners. I have also worked with Raspberry Pi controllers.

    About Me

      2017

      Data Analyst at Indeed.com

      2018

      GIS Specialist at Apple Maps. Completed Responsive Web Design Certification with FreeCodeCamp

      2019

      Full-time investor / trader. Continued learning with various programming languages / libraries and work doing research and equities analysis.

      2020

      Freelance, continuing programming / blockchain education.

      2022

      GIS Specialist at Centerpoint Energy

      2023

      GIS 3d Specialist at Apple Maps.

    Personal Accomplishments

    Top Quality Project, Chainklink Spring Hackathon 2022

    BS in Water Resource with a minor in Geology, TX State University

    Multiple GIS Certifications, Remote Sensing an Lidar Experience

    AS in Geography, Austin Community College

    LEED's Green Associate

    Responsive Web Design Certification

    First Aid Certification

    15+

    Open Source Projects