# Neil Banerjee > Principal Software Engineer | Scalability and Performance Location: Oakland, California, United States Profile: https://flows.cv/neilbanerjee I believe strongly in the craftsmanship component of software engineering. I work collaboratively to build, deploy, and operate highly performant systems at scale with an emphasis on maintainability and quality. As an engineering leader, I strive to continuously pay down technical debt without compromising organizational goals. I enjoy teaching, mentorship, and working cross-functionally to make complex technical challenges approachable to stakeholders of all disciplines. My colleagues recognize me for my enthusiasm and work ethic; for my ability to foster positive and inclusive workplace communication; and for my drive to identify potential and cultivate talent in others. I take pride in rapidly ramping up on complex systems, recognizing shared architectural issues, and identifying high-impact solutions. I have expertise in translating organizational objectives to engineering deliverables, including through stakeholder presentations, technical proposals, and onboarding and training materials. ## Work Experience ### Software Engineer @ Cambly Inc. Jan 2021 – Jan 2022 | San Francisco, California, United States I led a team of 10+ engineers over six months on a full rebuild of Cambly’s core product, enabling group lessons, a key strategic initiative unlocking new market segments and pricing models. I led the architecture and implementation of Cambly’s first graph APIs. I selected and integrated new technology, defined best practices for usage, and built tooling to enable feature developers. I championed operational best practices. I implemented new processes for identifying and triaging production issues. I built new systems for collecting and analyzing production telemetry. I led a team of six engineers to overhaul the engineering interview process, focusing on equity and inclusion. ### Principal Software Engineer @ Copper Jan 2020 – Jan 2020 As the technical leader of the server engineering team, I provided mentorship, code reviews, and architecture reviews. I championed best practices and standards for the entire team. I continued the journey of optimizing application code and cluster configuration to scale with the user base. I architected and implemented Kevlar, an asynchronous job processing system with dependency management and execution guarantees. We leveraged Kevlar to increase reliability of several key features to >99.9%. ### Staff Software Engineer @ Copper Jan 2017 – Jan 2020 As a staff software engineer, in addition to functioning as an individual contributor, I led teams of multiple engineers on several projects. I offered architectural guidance on projects across the team. I led a team of four engineers to add multi-currency support to Copper. Over the course of nearly a year, we reworked the Opportunity and Lead management component of the application to support multiple currencies, including real-time currency conversion and value aggregation with both fixed and floating exchange rates. I designed an internal framework for building in-app reporting, reducing the time required to build new reports from weeks to days. I championed the use of RuboCop for static analysis and code formatting, and integrated it into our continuous integration system. ### Senior Software Engineer @ Copper Jan 2015 – Jan 2017 As a senior software engineer, I had the opportunity to work both on features (Ruby on Rails) and on our infrastructure (Postgres, Redis, Elasticsearch, Heroku). Features - RingCentral integration: I architected and built the server component of Copper's integration with RingCentral. Copper integrates with the RingCentral API to allow users to make calls from within the Copper web application and automatically log call notes. (I also designed and built a working real-time sync of RingCentral call and SMS logs into Copper - but, for strategic reasons, this functionality was not made available to users.) - Developer API: I designed and built several of our first generation of developer APIs, allowing customers to programmatically integrate with Copper. - Zapier: I designed and built our initial integration with Zapier, allowing customers to build automated workflows. Infrastructure - Citus Migration: In 2017, Copper migrated from a single hosted Postgres to a distributed Postgres cluster using the Citus extension. I built several modifications to ActiveRecord to ensure that ORM-generated queries remained both valid and performant on a distributed database. - Resque Performance Tuning: Copper's real-time sync with Gmail, Google Calendar, and various third-party data enrichment services drives very database-intensive workloads. I routinely monitored and balanced the resources available to each family of background jobs to optimize user-facing responsiveness without overwhelming the database. - PWCompact: I designed and built a system for in-place Postgres table compaction, and used it to reduce our total database size by more than 20% without downtime. ### Software Engineer @ Copper Jan 2014 – Jan 2015 | San Francisco, CA As Copper's tenth full-time employee and fifth software engineer, I worked on several of the product's early features, contributing to both the web client (Ember.js) and the server (Ruby on Rails). - Google Calendar integration: Copper syncs Google Calendar events in real time, automatically associates them with relevant records, and tracks them for activity reporting. - Mailchimp integration: Copper integrates with Mailchimp, allowing users to manage email campaigns from within their CRM. ### Platform Engineer @ Inkling Jan 2013 – Jan 2014 | San Francisco, CA Worked on various projects for the Inkling API with Python, Ruby, and Javascript. ### Software Engineer @ Zynga Jan 2011 – Jan 2013 | San Francisco, CA I worked on the ChefVille team. I joined the team one year before its launch and helped to build several core systems, writing code in both Actionscript and PHP. Shortly before launch, I became the team's primary tools developer, tasked with improving the stability, efficiency, and quality of the game's content pipeline. This included: * Designing, building, and maintaining a framework of Ruby scripts that automatically create game content from feature specs. * Adding features to and fixing bugs in an existing AIR tool for content authoring. * Contributing to and maintaining a variety of other tools to improve studio efficiency. ### IT Services Student Developer @ Syracuse University Jan 2011 – Jan 2011 | Syracuse, NY Built a customer relationship management system on the SugarCRM platform for the Imagining America project. Translated client requirements into data schema and adjusted the system in response to ongoing client feedback. Wrote PHP scripts to add custom functionality to SugarCRM. ### Software Engineer @ Barracuda Networks Jan 2010 – Jan 2010 Worked on the Barracuda Message Archiver, which provides large-scale email archival services, and the Barracuda IM Client, which provides an internal instant messaging solution for corporate environments. Implemented new GUI features using C++ with the Win32 API. Worked with technical support staff to diagnose and resolve customer problems. ### Software Engineer @ FactSet Research Systems Jan 2008 – Jan 2009 Worked on the Marquee application, which provides real-time quotes and financial data for investment professionals. Built new GUI features using C++ with MFC. Worked with QA personnel to diagnose and fix problems in response to client feedback. ### Summer Analyst - Developer @ Bank of America Jan 2007 – Jan 2007 Designed, developed, deployed, tested, documented and supported a business performance metrics application for use by the derivatives back office. Built back-end server and client software using Java and Spring. Implemented a reporting and administration web interface for BPM using XHTML/CSS, Ajax, and JSP. ### Software Development Engineer Intern @ Amazon.com Jan 2006 – Jan 2006 Designed, developed, and tested several features for an internal diagnostics web application using Java, JSP, and Ajax. ## Education ### B.S.E. in Computer Science University of Michigan Jan 2004 – Jan 2007 ## Contact & Social - LinkedIn: https://linkedin.com/in/neil-banerjee-1b8b4513 --- Source: https://flows.cv/neilbanerjee JSON Resume: https://flows.cv/neilbanerjee/resume.json Last updated: 2026-03-23