* Improved cloud resource utilization by 43% by designing and building an autoscaler for a work scheduling system across hundreds of thousands of instances. Due to extensible design, the autoscaler was adopted in multiple teams.

* Saved 10% of total simulation cost by designing and implementing automatic work deduplication, after independently identifying the opportunity.

* Evangelized saving simulation costs across orgs; created best practices guides for optimizing simulations internally; created system for surfacing performance metrics at scale and making them easily usable for end-users.

* Founding engineering and technical lead on a small full-stack team building a personal finance web app with JavaScript/React, Python/Flask, and Postgres on AWS from post-seed to post-Series A funding.

* Created scalable event sourcing-based data architecture with transactional integrity and full replay capability that enabled company to launch a wide range of features with a small engineering team.

* Set engineering standards, onboarded and mentored junior developers, and worked across teams to drive company growth from zero to hundreds of complete financial plans delivered from Certified Financial Planners.

Founded and built a self-optimizing IaaS cloud platform distributed over AWS, Google Cloud Platform, and Microsoft Azure that achieves zero downtime by recovering from cloud outages.

Implemented front-end with Angular.js and jQuery; implemented backend with Python/Django, Celery, and PostgreSQL.

Followed lean startup methodology in working with external customers; made mistakes and learned from them.

Couldn’t raise funding or capture enough interest; will probably open-source it.