# Mathieu Dufour > Senior Software Engineer | MSc ML Location: Cambridge, Massachusetts, United States Profile: https://flows.cv/mathieu 👋 I'm a software engineer with over 5 years of professional experience, including over 3 years focused on applied ML and natural language processing. I’ve built production systems that extract structured data from complex documents using large language models (LLMs), retrieval-augmented generation (RAG), and OCR, and I enjoy solving real-world problems with scalable, user-focused AI. Most of my work has been at fast-moving startups where I’ve owned projects end-to-end—from building job queues and data pipelines to deploying models and user-facing features. I'm particularly interested in LLM privacy, document intelligence, and building tools that make unstructured data useful. When I’m not coding, you’ll find me rock climbing, building drones, or exploring new parts of the world. Always happy to connect—feel free to reach out! ## Work Experience ### Senior Software Engineer, AI @ Kipsi Jan 2025 – Present | San Francisco Bay Area ### Founding Software Engineer @ Kipsi Jan 2023 – Jan 2025 | San Francisco Bay Area • Led development of an agentic LLM system using RAG, LangGraph, and OCR to extract structured information from long-form documents with citation-backed results. Reduced contract review time from 12 hours to under 2 minutes. • Built Kipsi’s W-2 AI Analyzer, using OCR and ML to extract IRS W-2 data with over 99% accuracy. • Engineered a high-throughput job queue system using PostgreSQL and pg-boss, capable of handling requests with thousands of documents, each containing thousands of pages. • Architected and launched Kipsi Report, an online document editor with auto-populating system data. ### Full-Stack Software Engineer @ WFHomie Jan 2021 – Jan 2023 | Toronto, Ontario, Canada • Maintained a data pipeline for people analytics, utilizing Kafka streams and a PostgreSQL database. • Led data visualization for WFHomie’s People Analytics platform using D3.js and Airbnb’s visx charting library. • Engineered a machine learning (NLP) microservice for Slack message and survey data analysis. • Developed and launched Kudos, a Slack app installed in 100+ workspaces and serving 500+ monthly users. • Developed RESTful APIs in Node.js (Express) back-end servers. • Played a pivotal role in product development, which led to WFHomie's acquisition by GoCo Inc. in January 2023. ### Back-end Developer @ Coveo Jan 2021 – Jan 2021 | Montreal, Quebec, Canada Member of the Workplace R&D team, responsible for the Digital Workplace line of products and connectors. • Maintained data connectors, enabling Coveo’s AI-powered search as part of the Digital Workplace R&D team • Developed a system that allows users to select the data to be fetched by the connectors, enhancing user experience. • Maintained, developed features, and wrote automated tests for microservices in C# (.NET), Scala, and Go. • Participated in Agile ceremonies, including sprint planning and retrospectives. ### Software Developer @ WFHomie Jan 2021 – Jan 2021 | Toronto, Ontario, Canada • Designed, implemented, and maintained features on the WFHomie platform, often working on tight deadlines to prepare features for clients. • Implemented a booking system using the Stripe API handling on average 21 company-wide transactions per month. • Engineered an authentication and authorization system serving 1200+ users. • Fully designed and implemented a Slack app installed and used monthly by 25+ companies. ### Programmer Analyst @ CGI Jan 2019 – Jan 2019 | Québec, Canada • Created a desktop app to streamline mailbox migration to Office 365, reducing labor hours for migrating 10,000 mailboxes from over 42 hours to 30 minutes. • Automated routine technician tasks with PowerShell scripts. ## Education ### Master of Science - MS in Machine Learning and Data Science Imperial College London ### Software Engineering (B.Sc.) McGill University ### Minor in Entrepreneurship McGill University - Desautels Faculty of Management ### Computer Science Nanyang Technological University Singapore ## Contact & Social - LinkedIn: https://linkedin.com/in/mathieu-swe - Portfolio: https://mathieudufour.dev/ --- Source: https://flows.cv/mathieu JSON Resume: https://flows.cv/mathieu/resume.json Last updated: 2026-03-28