Scotty is available for hire
Hire ScottyScotty Waggoner
Verified Expert in Engineering
Software Developer
Sacramento, CA, United States
Toptal member since February 17, 2021
Bio
Scotty is an experienced full-stack developer who builds high-performance web and mobile applications with TypeScript, Node.js, Next.js, and React. He specializes in optimizing architectures, enhancing developer experience, and integrating AI-powered solutions. With a passion for problem-solving and user experience, Scotty delivers scalable, intelligent systems that drive real-world impact.
Portfolio
Health Plans of North Carolina
React, Next.js, Tailwind CSS, Node.js, Figma, GraphQL, Contentful, Calendly...
Stable Analytics, LLC
React Native, Bluetooth, APIs, SQLite, Drizzle, Bluetooth Low Energy (LE), Expo...
Algebraic Labs, LLC
TypeScript, SQL, Node.js, PostgreSQL, React, Amazon Web Services (AWS), Knex.js...
Experience
- Node.js - 8 years
- TypeScript - 8 years
- React - 8 years
- PostgreSQL - 8 years
- Next.js - 7 years
- React Native - 6 years
- Internet of Things (IoT) - 5 years
- OpenAI - 3 years
Availability
Full-time
Preferred Environment
Visual Studio Code (VS Code)
The most amazing...
...feature I've worked on was building Ask AI for FoodNoms, enabling users to instantly access detailed nutrition info from descriptions, images, and recipes.
Work Experience
Full-stack Developer
2022 - PRESENT
Health Plans of North Carolina
- Implemented marketing, quoting, and scheduling website with Next.js, significantly improving SEO, search rankings, performance, and conversions.
- Held a lead engineer position, making critical product and technical determinations, scoping new tasks, overseeing another engineer, and conducting code reviews.
- Handled integrations with the client's CRM, CMS data from Contentful delivered via GraphQL, Calendly for agent scheduling, 3rd-party quoting software, and SMS and email marketing using Next.js serverless API routes and Zapier.
- Created an AI chatbot quote flow using Botpress to help inform and convert users.
Technologies: React, Next.js, Tailwind CSS, Node.js, Figma, GraphQL, Contentful, Calendly, GraphQL Code Generator, TypeScript, Apollo, GitHub, Git, CSS Grid, Full-stack, Serverless, Architecture, Serverless Architecture, Full-stack Development, Microservices, Technical Leadership, Technical Product Management, Software Architecture, Project Consultancy, Back-end, ChatGPT, Headless CMS, JavaScript, Websites, User Profiles, REST APIs, Visual Studio Code (VS Code), AI Tools, Tailwind UI, Web Development, Zapier, Cloud Storage, User Experience (UX), User Interface (UI), Responsive Web Design (RWD), Team Management, CTO, Google Analytics, Fractional CTO, Cloudflare, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Application Architecture, Solution Architecture, n8n, Large Language Models (LLMs), Botpress.io, Prettier, HTML5, Code Refactoring, Agentic AI, AI Agents, Monitoring, REST, Sentry, RESTFul APIs, Technical Support, IT Audits, Vercel
Senior Cross-platform Mobile Developer
2025 - 2025
Stable Analytics, LLC
- Progressed from a requirements document to a fully-working React Native MVP using Expo within two weeks for a successful customer demo.
- Integrated modular Bluetooth connection handling and device communication code to quickly offload payloads from a client's custom microcontroller board.
- Managed states using SQLite and Drizzle to enable data persistence, ease of querying, and combining data from devices and remote sources to power app features.
- Started from scratch without designs and used Figma to prototype ideas and get quick feedback before implementation.
- Implemented UI solutions using NativeWind, a Tailwind CSS implementation for React Native, and Expo router.
Technologies: React Native, Bluetooth, APIs, SQLite, Drizzle, Bluetooth Low Energy (LE), Expo, NativeWind, Mobile Development, Early-stage Startups, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Application Architecture, Internet of Things (IoT), Embedded Systems, REST, Mobile Applications, RESTFul APIs
Back-end TypeScript Developer
2023 - 2025
Algebraic Labs, LLC
- Optimized moderation tools, improving DB performance and enhancing accuracy through AI-automated content analysis for user-submitted foods to a crowdsourced database.
- Engineered an AI-powered pipeline for food database matching and nutrient estimation leveraging OpenAI APIs (GPT-3.5, GPT-4, Structured Outputs) and incorporating keyword extraction, dataset filtering, and retrieval-augmented generation (RAG).
- Developed back-end endpoints for an AI-enhanced iOS client app using TypeScript, Deno, Supabase Edge Functions, and PostgreSQL, leveraging custom database functions to optimize query performance for real-time AI interactions.
- Dockerized and deployed a scalable Node.js API and batch processes on Amazon ECS, cutting deployment time and operational overhead while improving reliability and reducing downtime and costs.
- Architected a low-cost pipeline to capture, batch, and store search query metrics for future AI use. Investigated multiple solutions, considered pricing, and architected final implementation involving Amazon Kinesis Data Firehose and S3.
- Developed admin tools and product features with Node.js, Koa, Interval, Knex.js, PostgreSQL, and OpenAI APIs. Iterated on AI prompts and used OpenAI function calling capabilities to structure inputs and outputs.
- Added customizable endpoint rate limiting backed by Redis.
- Enhanced monitoring and logging with Datadog, improving visibility into Amazon ECS, EC2, Nginx, Redis, and Node.js.
- Improved developer experience by setting up VS Code Dev Containers, creating database seeds for testing and local development, and improving TypeScript tooling.
Technologies: TypeScript, SQL, Node.js, PostgreSQL, React, Amazon Web Services (AWS), Knex.js, Docker, Amazon Elastic Container Service (ECS), Datadog, OpenAI, OpenAI GPT-3 API, OpenAI GPT-4 API, APIs, GitHub Actions, Koa, Jest, Amazon S3 (AWS S3), Amazon Kinesis, Supabase, RevenueCat, Deno, PostgREST, Back-end, Artificial Intelligence (AI), ChatGPT, OpenAI SDK, JavaScript, Redis, Startups, Websites, REST APIs, OpenAI API, Visual Studio Code (VS Code), AI Tools, Authentication, Row-level Security (RLS), AWS SDK, Prompt Engineering, Large Language Models (LLMs), Agile Software Development, Web Development, DevOps, Cloud Storage, Databases, User Experience (UX), User Interface (UI), Responsive Web Design (RWD), Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Application Architecture, Solution Architecture, Code Refactoring, Agentic AI, AI Agents, Monitoring, WebSockets, Agile, REST, Sentry, RESTFul APIs, IT Audits
React Native Developer
2022 - 2025
Freelance Client
- Implemented a React Native async audio communication app for sales teams, tackling audio recording, playback, transcription, group messaging, and sales goals.
- Designed a GraphQL schema for Apollo Client to be consumed with improved pagination methodologies, cache keys, code generation, and configuration. Refactored screens to fully utilize Apollo's data loading and mutation capabilities.
- Implemented authentication flows using AWS Cognito and social logins (SSO).
Technologies: React Native, TypeScript, GraphQL, Apollo, Mobile App Development, APIs, API Integration, Code Review, React, GitHub, Jira, Git, Mobile, Mobile UX, Architecture, Technical Leadership, Minimum Viable Product (MVP), Software Architecture, Project Consultancy, Amazon Web Services (AWS), Mobile Apps, JavaScript, Startups, User Profiles, iOS, Android, Visual Studio Code (VS Code), Authentication, Agile Software Development, User Experience (UX), User Interface (UI), Expo, Single Sign-on (SSO), OAuth 2, Mobile Development, Early-stage Startups, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Application Architecture, Code Refactoring, Agile, Sentry, Mobile Applications, RESTFul APIs, IT Audits
Full-stack Engineer
2022 - 2022
Chainstarters
- Implemented front-end Web3 integration with Alchemy and Polygon for a client NFT drop site to load NFT data, connect wallets, make smart contract calls, and purchase NFTs.
- Created new GraphQL endpoints and PostgreSQL tables and configured GraphQL Code Generator.
- Used TailwindCSS, React, and TypeScript to implement marketing sites based on Figma designs.
Technologies: React, GraphQL, Node.js, Web3.js, Tailwind CSS, APIs, Cryptocurrency, API Integration, Blockchain, Crypto, Non-fungible Tokens (NFT), Code Review, Git, SQL, CSS Grid, Full-stack, Smart Contracts, Ethers.js, Prisma, Architecture, Full-stack Development, Technical Leadership, Minimum Viable Product (MVP), Software Architecture, Project Consultancy, Back-end, Digital Hardware Design, JavaScript, Startups, Websites, Ethereum, Web3, Visual Studio Code (VS Code), Authentication, Tailwind UI, Agile Software Development, Web Development, Databases, User Experience (UX), User Interface (UI), Responsive Web Design (RWD), Early-stage Startups, Front-end Development, GitLab, Teamwork, Communication, Application Architecture, HTML5, Push Notifications, Code Refactoring, Agile, RESTFul APIs
Printed Circuit Board Designer
2021 - 2022
Client (via an online freelance agency)
- Used Autodesk Fusion 360 to create schematics, a PCB layout, a 3D model, and PCB manufacturing files based on a hand-sketched wiring diagram for 18 relays.
- Designed for high currents on specific signals and fitted everything in a small footprint according to the requirements.
- Helped the client through phases of design and PCB manufacturing and testing.
Technologies: PCB Design, PCB, PCB Layout, Autodesk Fusion 360, Smart Devices, Internet of Things (IoT), Embedded Systems, Embedded Hardware, Hardware, CAD, Teamwork, Communication
Full-stack Developer
2014 - 2022
Cru
- Headed a team updating MPDX, an internal donor management app, using React, Next.js, GraphQL, Material UI, and serverless functions.
- Implemented article recommendation engine API using AWS Lambda to pull batch article recommendation updates from BigQuery, detect changes, and push precomputed JSON files to S3 grouped by page for easy and performant consumption by content sites.
- Oversaw a team implementing MissionHub, a React Native iOS and Android app designed to help grow interpersonal connections using React Native, TypeScript, and GraphQL.
- Led technically on numerous projects by scoping new features, selecting tech stacks, collaborating with stakeholders on requirements, mentoring colleagues, enhancing developer velocity, and addressing product direction choices.
- Created a modern donor user experience on our giving site (give.cru.org). Worked on gift configuration, the checkout process, managing payments, editing recurring donations, and the user's profile.
- Developed an npm library for validating, encrypting, and tokenizing bank account and credit card info. Utilized TypeScript as a wrapper library for our payment processor. Provided a clean API for web apps to consume.
Technologies: JavaScript, TypeScript, GraphQL, React, React Native, AngularJS, Apollo, Babel, Webpack, Next.js, GitHub, GitHub Actions, Jira, HelpScout, Travis CI, AWS Amplify, Netlify, Node.js, Tachyons CSS, Continuous Integration (CI), CSS, HTML, Front-end, Web App Development, Amazon Web Services (AWS), Vercel, AWS Lambda, Apollo Server, CI/CD Pipelines, Mobile App Development, Android, APIs, MySQL, API Integration, Code Review, Git, SQL, CSS Grid, Full-stack, Serverless, Firebase, Mobile, Mobile UX, Architecture, Serverless Architecture, Docker, Full-stack Development, Cloud, PHP, Microservices, Technical Leadership, Donations, Nonprofits, Charity, Minimum Viable Product (MVP), Technical Product Management, Product Ownership, Scrum Product Owner, Software Architecture, Datadog, Back-end, Mobile Apps, Payment APIs, Websites, User Profiles, REST APIs, iOS, Visual Studio Code (VS Code), Authentication, Material UI, AWS SDK, Agile Software Development, Web Development, DevOps, Cloud Storage, Databases, User Experience (UX), User Interface (UI), Responsive Web Design (RWD), Team Management, CTO, Google Analytics, Fractional CTO, Amazon CloudFront, Cloudflare, Google Maps, Auth0, Single Sign-on (SSO), Okta, OAuth 2, Payment Gateways, Mobile Development, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Redux, Application Architecture, Solution Architecture, HTML5, Push Notifications, Code Refactoring, Monitoring, WebSockets, Agile, REST, Sentry, Mobile Applications, RESTFul APIs, Technical Support, IT Audits
Mobile and Embedded Developer
2021 - 2021
Freelance
- Created prototype device using an ESP32 microcontroller and small screen to display data in a small form factor.
- Developed a React Native app to control the microcontroller using Bluetooth Low Energy (BLE).
- Implemented UI with Tailwind CSS to send new data to the microcontroller over BLE.
Technologies: Bluetooth Low Energy (LE), ESP32, React Native, Mobile App Development, iOS, Bluetooth, React, GitHub, Git, Full-stack, Smart Devices, Internet of Things (IoT), Architecture, Serverless Architecture, Full-stack Development, Technical Leadership, Minimum Viable Product (MVP), Embedded Systems, Firmware, Embedded C, Software Architecture, Project Consultancy, Embedded Hardware, Embedded Software, Hardware, Mobile Apps, JavaScript, Startups, Android, Visual Studio Code (VS Code), User Experience (UX), User Interface (UI), IoT Protocols, Expo, Mobile Development, Early-stage Startups, Front-end Development, Teamwork, Communication, Application Architecture, Mobile Applications, RESTFul APIs
Software Architecture Consultant
2021 - 2021
Freelance Client
- Researched and documented the AWS cloud architecture needed for deploying the app back end to periodically ingest data from a government dataset, run a data processing pipeline, and store that data for easy access.
- Scoped React Native work based on Figma screens and investigated and documented needed tooling and libraries.
- Provided context for chosen technologies and implementations, suggested alternatives, and shared general software development best practices.
Technologies: PostgreSQL, React Native, Front-end, Web App Development, Amazon Web Services (AWS), APIs, API Integration, GitHub, Git, SQL, Full-stack, Serverless, Mobile, Mobile UX, Architecture, Serverless Architecture, Docker, Full-stack Development, Cloud, Microservices, Technical Leadership, Kubernetes, Minimum Viable Product (MVP), Software Architecture, Project Consultancy, Back-end, JavaScript, Node.js, Startups, Websites, Web Development, DevOps, Cloud Storage, Databases, User Experience (UX), User Interface (UI), Team Management, CTO, Fractional CTO, Early-stage Startups, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Application Architecture, Mobile Applications, Technical Support
Experience
AI Assisted Moderation
https://www.foodnoms.com/blog/ai-assisted-moderation/Implemented a system for moderation and validating user-submitted foods to a crowdsourced database. Sent new foods to OpenAI assistants using OpenAI's Batch API and JSON Schema features, implemented a basic work queue using PostgreSQL and S3, and developed internal tools using TypeScript, Node.js, and Interval.
MissionHub
https://www.missionhub.comMissionHub is a React Native mobile app to help people connect with one another and take the next steps with people around them.
I helped rewrite the existing mobile app and align it with the new product direction. I worked with the product and design teams to implement new features and turn Figma designs into beautiful screens. I had front-end technical lead responsibilities to help make technology decisions, mentor coworkers, and improve code quality. I helped migrate MissionHub to React Hooks, TypeScript, and GraphQL. And I implemented auth, onboarding, reminders, and community features.
I helped rewrite the existing mobile app and align it with the new product direction. I worked with the product and design teams to implement new features and turn Figma designs into beautiful screens. I had front-end technical lead responsibilities to help make technology decisions, mentor coworkers, and improve code quality. I helped migrate MissionHub to React Hooks, TypeScript, and GraphQL. And I implemented auth, onboarding, reminders, and community features.
Education
2010 - 2014
Bachelor's Degree in Computer Engineering
University of California Davis - Davis, CA, USA
Skills
Libraries/APIs
React, AWS Amplify, Node.js, REST APIs, OpenAI API, Web3.js, PostgREST, Drizzle, NativeWind, Google Maps
Tools
GitHub, Amazon Elastic Container Service (ECS), ChatGPT, Zapier, Babel, Webpack, Jira, Travis CI, PCB Layout, Autodesk Fusion 360, Git, CAD, Google Analytics, Amazon CloudFront, n8n, Sentry, HelpScout, Figma, Prisma, Knex.js, AWS SDK, Expo, Auth0, GitLab, Prettier
Languages
JavaScript, TypeScript, GraphQL, CSS, HTML, HTML5, SQL, C, Rust, Embedded C, C++, PHP, Java, Python
Frameworks
React Native, Next.js, Jest, Tailwind CSS, AngularJS, Tachyons CSS, Koa, Material UI, OAuth 2, Redux, Botpress.io
Paradigms
Responsive Web Design (RWD), Application Architecture, Code Refactoring, REST, Continuous Integration (CI), Serverless Architecture, Microservices, Agile Software Development, DevOps, Mobile Development, Agile
Platforms
Amazon Web Services (AWS), Vercel, Docker, Visual Studio Code (VS Code), Netlify, AWS Lambda, Firebase, Contentful, Blockchain, Mobile, STM32, Raspberry Pi, Bluetooth Low Energy (LE), iOS, Android, Calendly, Kubernetes, RevenueCat, Ethereum, Mapbox
Storage
PostgreSQL, Databases, MySQL, Datadog, Amazon S3 (AWS S3), Redis, SQLite
Other
Apollo, Front-end, Web App Development, CI/CD Pipelines, Mobile App Development, APIs, API Integration, Code Review, Full-stack, Mobile UX, Architecture, Full-stack Development, Technical Leadership, Nonprofits, Charity, Minimum Viable Product (MVP), Technical Product Management, Software Architecture, OpenAI, Supabase, Back-end, Artificial Intelligence (AI), Websites, AI Tools, Authentication, Large Language Models (LLMs), Web Development, Cloud Storage, User Experience (UX), User Interface (UI), Cloudflare, Front-end Development, Teamwork, Communication, Complex Application User Interfaces (UI), Mobile Applications, RESTFul APIs, Technical Support, IT Audits, GitHub Actions, Internet of Things (IoT), ESP32, Electronics, Apollo Server, Embedded Development, Bluetooth, Cryptocurrency, CSS Grid, Serverless, Smart Devices, Cloud, Donations, Embedded Systems, Product Ownership, Firmware, Project Consultancy, OpenAI GPT-3 API, OpenAI GPT-4 API, Deno, Embedded Hardware, Embedded Software, Hardware, Headless CMS, Mobile Apps, Payment APIs, Startups, User Profiles, Row-level Security (RLS), Tailwind UI, Prompt Engineering, IoT Protocols, Team Management, Single Sign-on (SSO), Payment Gateways, Early-stage Startups, Solution Architecture, Push Notifications, GPIOs, I2C, LoRa, Agentic AI, AI Agents, Monitoring, WebSockets, PCB Design, PCB, GraphQL Code Generator, Crypto, Non-fungible Tokens (NFT), Smart Contracts, Ethers.js, Scrum Product Owner, Amazon Kinesis, Electrical Engineering, Digital Hardware Design, OpenAI SDK, Web3, CTO, Fractional CTO, Okta, PID Controllers, motor control systems
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