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.
Coding Projects
3d Animated Portfolio
A React App, using Vite, Framer.js
- React
- Framer.JS
- TailwindCSS
Car Showcase
A React App built on Next.JS using Rapid API, HeadlessUI, TS
- 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.
- 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.
- 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.
- React
- Web3
- Redux
- Solidity
Be Like Water NFT Drop
Utilizing a Bruce Lee painting I did, generated a 25 NFT collection, deployed on Rinkeby.
- 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.
- Javascript
- jQuery
- CSS
- Ajax
Datashaders Map
Jupyter Notebook experimenting with datashaders and holoviews.
- Python
- datashader
- GIS
DNA Count App
Python App using Streamlit, deployed to Heroku.
- 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).
- 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.
- Javascript
- CodePen
- MapboxGL
- API
Crypto Ticker
Cryptocurrency price app that I built using Axios to make API calls. Data was sourced from Cryptocompare.com.
- React
- JavaScript
- NPM
- Axios
- API
Geomorphology of Bryce Canyon
Capstone project defining the geomorphology of Bryce Canyon, located in the Colorado Plateau in Utah.
- 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.
- 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.
- Codepen
- HTML5
- CSS
Personal Finance App
Ruby App using sessions for login and some simple math to extrapolate future expenses.
- Ruby
- Sinatra
Enchanted Rock Viewer
GIS Map Viewer built in Codepen, using Mapbox API and utilizing GeoJSON data.
- 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.
- HTML
- CSS
Nintendo Animation
A Mario animation utilizing keyframes, layering, and timing.
- HTML
- CSS3
JQuery Animations
Experimenting with various Jquery animations and effects.
- Javascript
- jQuery
- CSS
Sunset Animation
Experimenting with mixins and keyframes to create this visualization.
- Javascript
- mixins
- keyframes
- CSS
Javascript Animation / Rendering
Experimenting with mixins, keyframes, terrain rendering visualization and animation timing to create this project.
- Javascript
- CSS
- mixins
- keyframes
FCC Survey Form
FreeCodeCamp project involving forms and various inputs, utilizing HTML5 validation checks.
- 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