Henry Pendleton
MarTech Software Engineer
Software engineer building web platforms, native iOS apps, and marketing technology. I ship production code across the stack — React and Astro on the web, SwiftUI on iOS, Python for data — and bring sales and finance experience to translating business goals into technical execution.
Technical Skills
languages
TypeScript JavaScript Python Swift SQL Rust
web & frameworks
React Next.js Astro Node.js Flask Tailwind CSS D3
iOS & mobile
SwiftUI Core Data CloudKit StoreKit 2 CoreLocation
data & infrastructure
Supabase PostgreSQL SQLite AWS (S3, Lambda) Cloudflare
martech
Google Analytics SEO CMS Platforms API Integrations
Professional Experience
MarTech Software Engineer
Maymont Homes · Charleston, SC
Marketing Technology & Web Development
- — Design, develop, and maintain marketing and web technology systems supporting digital campaigns, automation, and lead generation initiatives.
- — Implement and maintain tracking tags, data layers, and analytics scripts to ensure accurate measurement of user behavior and campaign performance.
- — Build and maintain API integrations connecting marketing platforms including CRM, CMS, and analytics tools.
- — Enhance website functionality, speed, and SEO readiness through clean code, structured data, and performance tuning.
Frontend Developer
Apex146 · Remote
White Label Virtual Sports Platform
- — Spearheaded the development of a customized livestream ecosystem, tailored to effortlessly integrate into a white-label virtual sports betting service.
- — Directed and executed the front-end development process, ensuring a seamless and intuitive user interface.
- — Utilized real-world racer data to craft captivating and entertaining virtual races, enhancing user immersion and interaction.
SprintGP.com
- — Collaborated with the backend team to create an action sports betting and gaming web platform.
- — Leveraged backend data through API to create an attractive and intuitive user interface using React.JS.
- — The project is a Web3 application hosted with the Ethereum blockchain and leveraging Metamask integration.
Technical Projects
Klew
- — Two-sided crossword puzzle marketplace — constructors publish through a web editor, solvers play on iOS with Apple Pencil support via native Scribble.
- — Built a Rust/WebAssembly constraint-satisfaction autofill engine backed by a 400k+ word dictionary for the web-based grid editor.
- — Implemented cross-platform progress sync using Supabase with local-first architecture and last-write-wins conflict resolution.
- — Shipped credits-based marketplace with StoreKit 2 in-app purchases and server-side receipt validation via Supabase Edge Functions.
- — Multi-season Formula 1 data visualization platform with live Jolpica API integration and graceful fallback to demo data.
- — Built with React 19, TypeScript, TanStack Router, and Recharts covering the 2020–2025 seasons.
- — Features driver/constructor standings, race calendar with lap-by-lap data, and advanced analytics with telemetry simulation.
- — Optimized bundle with route-based code splitting and chunked builds (~234KB gzipped).
Strava Local
- — Local-first analytics platform for Strava data — ingests CSV + FIT file exports into SQLite for custom analysis. All data stays on-machine.
- — Computes advanced training metrics: TSS, CTL/ATL/TSB (fitness/fatigue/form), heart rate zones, and TRIMP.
- — Features interactive dashboard with activity charts, GPS heatmaps, and route explorer built with Leaflet.js.
- — Built with Python, Flask, and SQLite — designed for athletes who want full data ownership.
- — Collaborative iOS grocery app with intelligent auto-categorization and real-time family sync via CloudKit sharing.
- — Built with SwiftUI, Core Data, and CloudKit using MVVM architecture — shipped to the App Store.
- — Implements smart shopping mode with progress tracking, comprehensive undo system, and haptic feedback.
Prior Experience
Yacht Sales
Cape Yachts · S. Dartmouth, MA
- — Outperformed sales goal, by 35% in the first year, through constant contact, enthusiasm, and determination.
- — Developed and maintained relationships with clients throughout the buying process.
- — Collaborated with the marketing department to organize a successful sales event targeting qualified buyers.
Education
Flatiron School
Full Stack Web Development, Ruby on Rails and JavaScript/React program
New York, NY
St. Lawrence University
Bachelor of Arts in Business and Economics
Canton, NY