Erick is available for hire
Hire ErickErick Katzenstein
Verified Expert in Engineering
OpenAI GPT-4 API Developer
Location
New York, NY, United States
Toptal Member Since
May 24, 2017
Erick is a full-stack engineer with exceptional velocity and an obsession for UX design. With 15 years of experience in engineering and design, his main areas of expertise include product development, 3D interaction, data visualization, and conversational AI (ChatGPT and Llama2). Erick can build an entire product from scratch and looks forward to the next exciting project.
Portfolio
Arena
React, D3.js, PostgreSQL, ChatGPT, Front-end, HTML, JavaScript, CSS, Back-end...
Twitter
JavaScript, D3.js, React, GraphQL, Front-end, HTML, CSS, Full-stack, Figma...
Enigma Technologies
SVG, WebGL, CSS, Jest, Redux, React, JavaScript, Front-end, HTML, Full-stack...
Experience
Availability
Part-time
Preferred Environment
React, D3.js, Three.js, Figma, Next.js, TypeScript, PostgreSQL, UI Animation, OpenAI GPT-4 API, JavaScript, CSS, HTML, Back-end, Full-stack, Front-end Development, REST, ECMAScript (ES6), REST APIs
The most amazing...
...thing I've built recently is a conversational AI tool for generating Spotify playlists with ChatGPT.
Work Experience
Lead Product Engineer
2022 - 2023
Arena
- Served as the tech and design lead for Arena's core product, providing tools for customers to visualize AI performance.
- Worked as the tech and design lead for GTM pursuits, rapid prototyping, and fast-paced demo development.
- Developed a component library for internal use at Arena.
Technologies: React, D3.js, PostgreSQL, ChatGPT, Front-end, HTML, JavaScript, CSS, Back-end, Full-stack, Figma, TypeScript, Next.js, Web Scraping, OpenAI GPT-3 API, Pandas, Python 3, Python, InDesign CC, Agile, Git, SQL, Rhinoceros 3D, Design, Data Visualization, Content Management Systems (CMS), Visual Studio Code (VS Code), Framer, Adobe, Artificial Intelligence (AI), Web, GLSL, 3D, Edge Computing, Vercel, LLaMA, Pineapple, APIs, User Interface (UI), User Experience (UX), Fintech, jQuery, Visualization, Dashboards, Front-end Development, REST, ECMAScript (ES6), Django, Progressive Web Applications (PWA), REST APIs, Design Language, Cypress, Storybook, React Native, Search Engine Optimization (SEO), MongoDB, Animation, Web Development, API Integration, Chatbots, OpenAI, SEO Tools, Mapbox, 3D Product Modeling, Canvas
Senior Software Engineer
2020 - 2022
- Built internal products for platform engineers to visualize network traffic and detect and remediate fleet health issues across data centers.
- Worked as a front-end and design lead on Mechanic, Twitter's internal tool for automating the remediation of hardware failures.
- Worked as a front-end and design lead on Network Health Visualizer, a customized tool to visualize network traffic at Twitter.
Technologies: JavaScript, D3.js, React, GraphQL, Front-end, HTML, CSS, Full-stack, Figma, TypeScript, Next.js, Web Scraping, OpenAI GPT-3 API, Python, InDesign CC, Agile, Git, SQL, Design, Data Visualization, Content Management Systems (CMS), Visual Studio Code (VS Code), Adobe, Artificial Intelligence (AI), Web, 3D, Edge Computing, APIs, User Interface (UI), User Experience (UX), jQuery, Visualization, Dashboards, Front-end Development, REST, ECMAScript (ES6), REST APIs, Cypress, Storybook, Animation, Web Development, API Integration, Mapbox
Senior Software Engineer
2017 - 2019
Enigma Technologies
- Acted as the tech lead for a user experience platform, an Enigma demo, and Enigma Labs.
- Worked as a design and tech lead for the rapid prototyping of Enigma Labs.
- Served as a design and tech lead for Enigma's company graph demo.
Technologies: SVG, WebGL, CSS, Jest, Redux, React, JavaScript, Front-end, HTML, Full-stack, Figma, TypeScript, Next.js, Pandas, Python 3, Python, InDesign CC, Electron, Agile, MySQL, Git, SQL, Design, Data Visualization, Content Management Systems (CMS), Visual Studio Code (VS Code), Adobe, Web, 3D, Vercel, APIs, User Interface (UI), User Experience (UX), Fintech, jQuery, Visualization, Dashboards, Front-end Development, REST, ECMAScript (ES6), Django, Progressive Web Applications (PWA), REST APIs, Storybook, React Native, Search Engine Optimization (SEO), MongoDB, Animation, Web Development, API Integration, Create React App, SEO Tools, Mapbox
Interactive 3D Graphics Developer
2017 - 2018
Fitd Furniture Ltd
- Contributed to this project as a full-stack developer.
- Handled comprehensive design in collaboration with the client.
- Implemented custom WebGL/GLSL in tandem with Three.js.
- Developed a Node.js/PostgreSQL back end and a React/Redux front end.
- Contributed to an adaptive parametric model complete with pricing logic.
Technologies: Stripe, Node.js, Express.js, PostgreSQL, Three.js, Redux, React, Front-end, HTML, JavaScript, CSS, Full-stack, Git, Rhinoceros 3D, Grasshopper, Design, Content Management Systems (CMS), Visual Studio Code (VS Code), Adobe, Web, GLSL, 3D, APIs, User Interface (UI), jQuery, Visualization, Front-end Development, REST, ECMAScript (ES6), REST APIs, Search Engine Optimization (SEO), Animation, Web Development, API Integration, Create React App, SEO Tools, 3D Product Modeling, Canvas
Lead Developer
2016 - 2017
Mode Lab
- Led the New York development team—focusing on the strategic growth and success of the online research and development initiatives.
- Developed full-stack web and desktop apps with 3D interaction, data visualization, and parametric CAD models.
- Conducted in-depth work with client teams. Focused on all aspects of the company's business, including project management, customer relations, strategy, and advanced research and development.
Technologies: CAD, WebGL, Redux, React, Node.js, Front-end, HTML, JavaScript, CSS, Back-end, Full-stack, AutoCAD 2D, AutoCAD 3D, Revit, Git, Rhinoceros 3D, Grasshopper, Design, Data Visualization, Content Management Systems (CMS), Adobe, Web, GLSL, Express.js, 3D, APIs, User Interface (UI), User Experience (UX), jQuery, Visualization, Front-end Development, REST, ECMAScript (ES6), REST APIs, Search Engine Optimization (SEO), Animation, Web Development, API Integration, Create React App, SEO Tools, 3D Product Modeling, 3D Art, Canvas
Senior Technology Specialist
2014 - 2016
Mode Lab
- Acted as the tech lead on several computational modeling projects, developing tools for custom CAD applications and web applications.
- Led several educational programs on technology training—focusing on the adoption of custom tools developed in-house.
- Led 12 workshops in over two years on parametric modeling in architecture and product design with clients and participants from various technology conferences.
Technologies: CAD, WebGL, GLSL, Node.js, Front-end, HTML, JavaScript, CSS, AutoCAD 2D, AutoCAD 3D, Revit, Git, Rhinoceros 3D, Grasshopper, Design, Data Visualization, Content Management Systems (CMS), Adobe, Web, 3D, APIs, User Interface (UI), User Experience (UX), jQuery, Visualization, Front-end Development, REST APIs, Animation, Web Development, API Integration, Create React App, 3D Product Modeling, 3D Art, Canvas
Experience
Arena Analyze: ML Performance Dashboard
https://apollo.arena-ai.com/A one-page prototype of Arena's core product Analyze view. The dashboard is a control/treatment comparison of machine learning (ML) campaigns deployed to Arena's clients. This link is a limited view of the full feature set.
The design challenge was to make this dashboard agnostic to the industry and surface specific and custom KPIs for different clients. The responsive design enables users to "opt-in" to a given metric for further study.
The technical challenge was to surface aggregated metrics as well as drill-down data. The top-level aggregations are rendered with D3 and SVG, while the drill-down metrics are rendered with WebGL for optimal performance.
The back-end is powered by an LDAP database (Snowflake) coupled with PostgreSQL for app-specific storage.
Role: designer and tech lead of a team of six.
The design challenge was to make this dashboard agnostic to the industry and surface specific and custom KPIs for different clients. The responsive design enables users to "opt-in" to a given metric for further study.
The technical challenge was to surface aggregated metrics as well as drill-down data. The top-level aggregations are rendered with D3 and SVG, while the drill-down metrics are rendered with WebGL for optimal performance.
The back-end is powered by an LDAP database (Snowflake) coupled with PostgreSQL for app-specific storage.
Role: designer and tech lead of a team of six.
Cedar: Interactive Real Estate Development
https://www.cedar.build/Engaged in software engineering for an interactive 3D scene designed for architectural zoning and massing models, with key accomplishments including:
• Implementation of three custom line weights for architectural rendering.
• Development of animated transitions across different design scenarios.
• Integration of ambient occlusion and tone mapping, ensuring optimal performance.
• Conversion of tilemap to geojson format.
• Creation of custom generative modeling solutions.
• Implementation of three custom line weights for architectural rendering.
• Development of animated transitions across different design scenarios.
• Integration of ambient occlusion and tone mapping, ensuring optimal performance.
• Conversion of tilemap to geojson format.
• Creation of custom generative modeling solutions.
Chat Jams
https://www.chatjams.ai/A custom chatbot (OpenAI GPT-4 API) to make your Spotify playlist. The website speaks for itself. This was an entirely solo full-stack project, including ideation, back-end engineering, prompt engineering, design, and front-end engineering.
Company Graph
https://vimeo.com/348447657A demo of Enigma's company graph product, a tool to navigate and analyze the complex relationships between small and medium businesses (SMBs).
I was the tech, design, and product lead on this project.
I was the tech, design, and product lead on this project.
Fitd 3D Cupboard Configurator
https://fitd-demo.vercel.appFitd.com provides clients with the opportunity to design and order custom cupboards within a 3D interface.
I worked on the development of WebGL, the back and front end, and the design (solo project). This comprehensive site was built in collaboration with a startup based out of London, UK.
Technology stack: Node.js, React, WebGL, Three.js, Stripe, Acuity, SendGrid
I worked on the development of WebGL, the back and front end, and the design (solo project). This comprehensive site was built in collaboration with a startup based out of London, UK.
Technology stack: Node.js, React, WebGL, Three.js, Stripe, Acuity, SendGrid
3D Bike Configurator
https://go-configure.vercel.app/GoConfigure is a helpful estimating tool that provides you with a layout based on the size of your project area for interior or exterior spaces.
This project is developed using Three.js and React, offering estimates for configuring indoor bike racks. Its key features include:
• Bike count and sizing optimization
• PDF export of specs and floor plan, dynamically updated with user configurations
• Complex design schema and storage configuration
• Complex 3D scene with hundreds of rendered bicycle proxies
This project is developed using Three.js and React, offering estimates for configuring indoor bike racks. Its key features include:
• Bike count and sizing optimization
• PDF export of specs and floor plan, dynamically updated with user configurations
• Complex design schema and storage configuration
• Complex 3D scene with hundreds of rendered bicycle proxies
GetMyVaccine
https://www.getmyvaccine.org/GetMyVaccine.org was a volunteer-driven project to help people find COVID-19 vaccine appointments and prevent slot waste at pharmacies. The site deployed an army of scraping bots to aggregate national availability data (USA) and display results in a common interface. GetMyVaccine.org welcomed more than 600,000 unique users in four months.
Emojimation
https://ekatzenstein.github.io/emojimation/An npm module for animated expressions using SVG. It was built for an AI-powered sentiment-analysis chat room using the Watson Tone Analyzer API.
This package's initial conception was for the React Riot Hackathon 2017—where our team took home the Innovation Award.
This package's initial conception was for the React Riot Hackathon 2017—where our team took home the Innovation Award.
Skills
Languages
SQL, JavaScript, TypeScript, CSS, HTML, ECMAScript (ES6), GLSL, GraphQL, Python 3, Python, Gremlin
Frameworks
Express.js, Electron, Next.js, Redux, MUI (Material UI), Cypress, React Native, Jest, Django
Libraries/APIs
Node.js, D3.js, Three.js, React, Mapbox GL, jQuery, REST APIs, WebGL, Puppeteer, Pandas, Stripe
Tools
CAD, Rhinoceros 3D, Grasshopper, Adobe, AutoCAD 2D, AutoCAD 3D, Revit, InDesign CC, Create React App, Canvas, Git, AutoCAD, Figma
Paradigms
REST, Search Engine Optimization (SEO), Agile
Platforms
Web, Visual Studio Code (VS Code), Vercel, Mapbox, MacOS
Storage
PostgreSQL, MySQL, MongoDB, Redis
Other
SVG, Data Visualization, 3D, Design, Front-end, Content Management Systems (CMS), ChatGPT, UI Animation, OpenAI GPT-4 API, Full-stack, APIs, User Interface (UI), User Experience (UX), Visualization, Dashboards, Front-end Development, Animation, Web Development, API Integration, Chatbots, OpenAI, 3D Product Modeling, Framer, Web Scraping, Artificial Intelligence (AI), Back-end, OpenAI GPT-3 API, Edge Computing, LLaMA, Pineapple, Fintech, Progressive Web Applications (PWA), Design Language, Storybook, SEO Tools, 3D Art, PDF, Neptune
Education
2008 - 2010
Master of Architecture Degree in Architecture
University of Pennsylvania - Philadelphia, PA, USA
2004 - 2008
Bachelor of Arts Degree in Architecture and Math
University of Pennsylvania - Philadelphia, PA, USA