Workbook Performance Team

• Making Sigma go brrr

Embedding Team

• Designed and built JWT embeds

• Designed and built the Sigma Embed SDK

• Made embeds go brr

• Migrated from local mail server in PHP to using SendGrid, allowing us to migrate the site to MSFT Azure

• Built an Electron Desktop App to manage logins to the instruments in the lab.

• Migrated the public website to React, and node.js, from PHP

• Built public APIs for users to be able to add connectors to various OLAP databases. This allows for much companies

to start using Sigma Computing much quicker.

• Worked on the design and implementation of Version Tagging, a feature allowing users to freeze a workbook and swap the underlying data sources. This allowed users to quickly productionize their analysis in one click.

• Separated a monolith deployed on AWS EC2 to two loosely coupled microservices allowing it to independently scale

execution of tasks, increasing capacity by 100% and achieving 99.99% uptime.

• Added Micrometer metrics and observability dashboards in Grafana tracking health metrics and added alerts.

• Evangelized integrations with static analysis tools SonarCloud and ES Lint. Tools gained 100% adoption by teams.

• Developed CI pipelines using Jenkins helping move from monthly release cycles to weekly release cycles.

• Moved 100% of microservices onto Kubernetes by writing Helm charts and Jenkins pipelines to deploy.

• Mentored two new employees, teaching them about the applications and practices followed.

• Developed a workflow engine used by data scientists to productise analysis.

• Designed and implemented APIs powering the application, including permission management and share functionality of key entities.

• Brought in unit testing practices, increasing code coverage from 0% to 60%, with 90% coverage in all hotspots.