Cacheflow is a B2B subscription billing management and CPQ solution. It was acquired by HubSpot in October 2024. I was employee number 5. I helped build the product from the early stages, working on all sides of the software: Java Spring, Node.js, React/Typescript, AWS, integrations.

Foxy AI is a startup applying machine learning to the field of residential real estate. I worked part-time, then full-time, doing various types of software development: trained neural networks, built ML-based search engines, ran large-scale scraping jobs, built web apps and a chrome extension, created a microservice-based backend to service these systems. Used Python, Keras, PyTorch, Docker, React, Spotify's Annoy. Mentored junior engineers, worked with clients.

Worked on various services powering access management in WeWork spaces. Worked with Golang, Java, Kubernetes, gRPC, Kafka.

Boston Deep Learning is a consultancy building various machine learning products. I worked on a project developing convolutional neural networks for a facial recognition app. Handled feature engineering, network architectural design, productionizing models. Blog post describing one of these models can be found at https://medium.com/@leosimmons.

Si14 was a small consultancy that specialized in web scraping software. I worked as the primary developer of a scraping system where I wrote a scraping library in Python, deployed a distributed system in AWS to use the library to complete a large volume of scheduled and on-demand scraping jobs. Maintained a web app built with Backbone/Marionette, Python, Flask, and MySQL for users to interact with the scraping system. Integrated system with Loggly, TravisCI, AWS CodeDeploy for monitoring, testing, and deployment.