Hi, I'm Mark Duppenthaler

Bouquet

As the sole developer, built a full-scale translation crowdsourcing platform to improve machine translation models across 4000+ underrepresented languages. The platform features user authentication, a translation collection interface, and a robust Flask backend with database integration. Architected on AWS using CloudFront, WAF, API Gateway, ALB, ECS, ECR, Cognito, SES, Postgres RDS, Secrets Manager, CloudWatch, and Google Analytics. Visit Bouquet and contribute translations to help improve machine translation in your language!

Seamless Streaming

As the sole developer, built an immersive Oculus experience using a streaming version of the expressive translation model. Users could converse with people speaking different languages while seeing real-time transcriptions in their headset view. Demoed this groundbreaking technology to reporters across multiple countries, including a showcase in Japan that made it onto Japanese national television. Try the HuggingFace demo (may neeed to clone the space) to experience the streaming translation technology yourself.

Seamless Expressive

Helped build the interactive demo showcasing breakthrough research in expressive speech translation that preserves vocal style, emotion, and prosody across languages—delivering translations that sound natural and emotionally authentic. Published in a Meta AI paper, this research became the foundation for Instagram's voice translation feature, bringing expressive multilingual communication to millions of users worldwide.

Seamless M4T

Part of the team that built the interactive demo for a groundbreaking multimodal translation system that supports speech-to-speech, speech-to-text, text-to-speech, and text-to-text translation across nearly 100 input languages to 35 output languages. Published as a research paper and released as an open-source model, enabling seamless communication across language barriers through advanced AI-powered translation technology.

Ana Carolina ♥ Mark

When your fiancée asks if you can build a wedding website, you say yes. When she's Brazilian and the wedding is in Brazil, you make it bilingual. When you're a developer, you probably spend way too much time perfecting the animations. Featured RSVPs, event details, travel info, photo gallery and a beautiful prewedding video. The most important product launch of my life.

Facebook API Upgrade Tool

Built the official tool from Facebook for helping developers upgrade their apps to new versions of the Graph API. Personalized for each developer from real calls coming from their app, showing which calls may break with upcoming API changes.

Built the data pipeline which aggregated trillions of API calls daily, analyzed them for potential breakages, and generated personalized reports for each developer. This project improved developer experience and reduced support costs significantly. Patent awarded.

Facebook Anonymous Login

Sole engineer responsible for building this product announced at F8 2014 by Mark Zuckerberg, which made headlines for allowing users to log into apps anonymously. Built sophisticated infrastructure on top of Facebook Login that maintained user anonymity within an inherently social platform—a significant technical challenge. My first patent was awarded for this innovation.