Hello, I'm a software engineer based in Buenos Aires!
Ben Sadler
Software Engineer / Writer / Teacher
Bio
I'm a versatile software engineer with over six years of experience building full-stack applications across the JavaScript ecosystem. I specialize in practical, reliable systems using TypeScript, React, Next.js, Svelte, SvelteKit, Node.js, MongoDB, Supabase, Postgres, and tRPC, with a focus on performance and clean architecture. I ship features end-to-end, mentor teammates, and take ownership in fast-moving environments. I work in an AI-native way—using Cursor and Copilot daily—to move faster without sacrificing quality. I'm also at home with Tailwind, React Three Fiber, Three.js, Python, Django, and AWS.
Feel free to reach out if you'd like to connect.
Work Experience
March 2023 - Present
Full Stack Developer at Entropy
Architected and shipped full-stack features with React, Node.js, and TypeScript for high-traffic operational workflows. Improved reliability and performance during peak usage. Modernized a large legacy codebase and refactored critical paths for maintainability. Led PR reviews with a focus on clean code and system design. Integrated Cursor and Copilot into daily workflows. Maintained a scalable Svelte component library across multiple apps.
Tech: React, Node.js, TypeScript, Svelte, Cursor, Copilot, Git
Full Stack Developer at Entropy
Architected and shipped full-stack features with React, Node.js, and TypeScript for high-traffic operational workflows. Improved reliability and performance during peak usage. Modernized a large legacy codebase and refactored critical paths for maintainability. Led PR reviews with a focus on clean code and system design. Integrated Cursor and Copilot into daily workflows. Maintained a scalable Svelte component library across multiple apps.
Tech: React, Node.js, TypeScript, Svelte, Cursor, Copilot, Git
July 2022 - March 2023
Full Stack Developer at The Flock
Built a web app from the ground up with React and TypeScript. Extended and maintained a Node.js backend with Supabase (Postgres) for data and real-time features. Deployed to AWS EC2. Mentored junior developers and introduced Cursor into the team workflow.
Tech: React, TypeScript, Node.js, Supabase, Postgres, AWS, Git
Full Stack Developer at The Flock
Built a web app from the ground up with React and TypeScript. Extended and maintained a Node.js backend with Supabase (Postgres) for data and real-time features. Deployed to AWS EC2. Mentored junior developers and introduced Cursor into the team workflow.
Tech: React, TypeScript, Node.js, Supabase, Postgres, AWS, Git
September 2021 - August 2022
React / Three.js Developer at Edgar Allan
Built a 3D web app with Three.js and React Three Fiber. Implemented UI and fixed major accessibility issues. Leveled up on TypeScript and Next.js. Worked with async workflows and backend integrations for real-time features.
Tech: React, Three.js, React Three Fiber, TypeScript, Next.js, Git
React / Three.js Developer at Edgar Allan
Built a 3D web app with Three.js and React Three Fiber. Implemented UI and fixed major accessibility issues. Leveled up on TypeScript and Next.js. Worked with async workflows and backend integrations for real-time features.
Tech: React, Three.js, React Three Fiber, TypeScript, Next.js, Git
November 2019 - January 2022
Front End Developer at Unihive
Turned Figma designs into production code and reusable component libraries. Built client apps with React and Svelte, integrated with serverless backends. Collaborated closely with product owners on iteration and delivery.
Tech: React, Svelte, serverless, Git
Front End Developer at Unihive
Turned Figma designs into production code and reusable component libraries. Built client apps with React and Svelte, integrated with serverless backends. Collaborated closely with product owners on iteration and delivery.
Tech: React, Svelte, serverless, Git
March 2019 - December 2024
Web Dev Teacher at Equidad NGO
Taught HTML5, CSS3, and modern JavaScript (ES6+). Developed curriculum, exercises, and assessments aligned with industry practice. Helped shape the study program using student feedback and market trends.
Web Dev Teacher at Equidad NGO
Taught HTML5, CSS3, and modern JavaScript (ES6+). Developed curriculum, exercises, and assessments aligned with industry practice. Helped shape the study program using student feedback and market trends.
Education
August 2025
Master in Creative Writing — UNTREF, Buenos Aires
Master in Creative Writing — UNTREF, Buenos Aires
December 2021
Digital Humanities Diploma — UCES, Buenos Aires
Focus: data visualization and written culture.
Digital Humanities Diploma — UCES, Buenos Aires
Focus: data visualization and written culture.
December 2019
Full-Stack Dev Course — Comunidad IT, Buenos Aires
Focus: MERN stack.
Full-Stack Dev Course — Comunidad IT, Buenos Aires
Focus: MERN stack.
I ♥
Literature, Movies, Playing Bass, Bikes and Cats