# Ambreen Hasan > Staff Software Engineer at Order.co Location: San Francisco Bay Area, United States Profile: https://flows.cv/ambreen I am an engineer passionate about writing well-tested, modular code that is both scalable and maintainable. I believe the best teams to work with are those that are collaborative and inclusive while also encouraging the professional growth of their team members. ## Work Experience ### Staff Software Engineer @ Order.co Jan 2023 – Present | San Francisco Bay Area - Technical lead for the platform and infrastructure team from April 2023 to November 2023 - Spearheaded the effort to modernize CI/CD pipelines, reducing deployment times from over 2 hours to 10 minutes. - Maintained AWS infrastructure using Terraform and Terraform Cloud. - Responsible for multiple Rails upgrades, bringing the monolith from Ruby 2.4 and Rails 4.2 to Ruby 3.0 and Rails 6.1 within a year. - Implemented Postgres read replica support, reducing primary database CPU load by 30%. - Implemented DataDog integration beyond simple log aggregation to include metrics, alerting, APM and distributed tracing. - Led several initiatives to reduce company's spend with AWS, which led to savings of $2,000 per month. ### Senior Software Engineer @ Order.co Jan 2022 – Jan 2023 | San Francisco Bay Area Technical lead for the platform and infrastructure team ### Lead Software Engineer, Design Systems Enablement @ Salesforce Jan 2021 – Jan 2022 | San Francisco Bay Area ### Senior Software Engineer, Design Systems Enablement @ Salesforce Jan 2019 – Jan 2021 | San Francisco, CA -Built a static analysis tool that aggregates Design System adoption data within our internal code. This analyzed 50,000+ files per day. The infrastructure was built with Docker, Jenkins, and Rails. - Built a data pipeline that transferred large data sets from S3 to a Postgres database. This data was plugged into Tableau for analysis. - Redesigned and completely rebuilt our Design Systems API from NodeJS to Ruby on Rails within a span of a month. This allowed us to extract the API from a monolithic repo as well as scale the API to include a Design System data model that was inclusive of multiple design systems. Also bumped testing coverage by 100%. - Built a small scale CDN for icon assets in Ruby on Rails. This allowed for scalable icon asset storage and delivery of these assets to web components. - Maintained and built a release pipeline for two of our open source projects such as the Salesforce Lightning Design System Validator VsCode Extension (typescript) and Language Server Protocol (java). - Mentored both junior and senior members of the team on technical guidance and architecture. - Built internal tools (mostly in Rails) that would streamline our team processes between Github Projects and our internal product management tools. This reduced overhead and duplication of tasks while also keeping our tasks close to the source code. ### Software Engineer @ Mode Jan 2017 – Jan 2019 | San Francisco, CA - Assisted in upgrading main Rails application from Rails 4.X to Rails 5 - Fixed bugs, added features, and increased observability of Ruby and Go applications. - Lead backend engineer for the freemium product which had 2000+ signups 24 hours after release. - Expanded the backend Rails API by adding new endpoints and writing API documentation. - Maintain code quality by reviewing code, writing specs, and security fixes. ### Software Engineer (Technical Lead) @ Roostify Jan 2015 – Jan 2017 | San Francisco, CA I worked as a Technical Lead where I helped to streamline the development process by maintaining a broader understanding of existing Roostify architecture and engineering practices. I put my emphasis on security, code, and test quality while also fulfilling product requirements with the least effort possible. In addition, I worked with product and clients in providing estimation and cost of forthcoming projects while also designing those systems as well. * Building new features in Roostify’s core application and API in Ruby, Ruby on Rails, and JavaScript * Designed and implemented SAML SSO solution for securely signing in financial institutions. * Writing integration, feature, and unit tests in RSpec, Capybara, and Jasmine. * Integrating and architecting third-party integrations such as Fannie Mae's DesktopUnderwriter API * Working directly with clients to troubleshoot and fix bugs * Determining estimations on forthcoming projects. * Maintaining code quality and scalability. * Deployed new customers to Heroku * Pairing with peers and assisting in code reviews * Practicing agile software development practices ### Phase 0 Guide / Tutor @ Dev Bootcamp Jan 2015 – Jan 2015 | Remote Dev Bootcamp is an intensive, hands-on learning program where students spend over 19 weeks turning into passionate and empathetic web developers. For the first 9 weeks students remotely prepare for the program and as a Phase 0 Guide I tutor students in technical aspects such as Ruby, JavaScript, HTML, CSS, Git, and SQL. I also write code reviews and assist students in Ruby and JavaScript best practices. ### Web Developer @ Dev Bootcamp Jan 2014 – Jan 2014 | San Francisco, CA Dev Bootcamp is a 19-week intensive hands-on learning program focused on transforming empathetic and passionate students into world-class web developers. ### Web Development Intern @ Quirky Inc Jan 2015 – Jan 2015 | San Francisco, CA - Assisted in developing internal tools for Quirky devices in Ruby on Rails. - Developed features in Rails and JavaScript/jQuery. - Integrated charts using D3.js and Highcharts. - Maintained backend OTA server and simplified backend processes. - Wrote tests with RSpec, Minitest, and Capybara. - Assisted in writing a secure Rails API used for manufacturing hundreds of devices. - Other technologies learned: CI, AWS, MySQL, Firebase, and Objective-C. - Wrote an object-oriented Ruby script for testing performance of OTA server. ## Education ### Bachelor of Arts (B.A.) in English Language and Literature/Letters University of California, Berkeley ### Web Development Dev Bootcamp Jan 2014 – Jan 2014 ## Contact & Social - LinkedIn: https://linkedin.com/in/ambreenhasan --- Source: https://flows.cv/ambreen JSON Resume: https://flows.cv/ambreen/resume.json Last updated: 2026-03-22