Tom Cahill

Over my nearly 7 years at Alto I assumed a variety of roles, starting as a generalist developer working on everything from our patient-facing web and mobile app to our billing system before becoming a founding member of our Platform team and finally joining forces with our Infrastructure and Security teams under the umbrella of DevSecOps.

• Supported the modularization of our monolithic Rails application by developing internal tools that provided a guided migration process
• Led migration of company-wide CI/CD from CircleCI to Github Actions
• Substantially improved security for our patients by leading a migration of authentication in our app to Auth0, introducing features like MFA and bot detection
• Led major version upgrades of our Postgres databases with minimal downtime (on the order of seconds)
• Led overhaul of legacy service interfacing with medication-dispensing robots
• Introduced Kafka support to our Rails applications by building an opinionated library which included useful abstractions for producers and consumers with sane defaults, support for queue semantics, metrics/alerting, and a debugging UI
• Created an extensible API gateway built on top of the Lura framework for handling common concerns such as request retries and observability

• Contributed to Apcera's container runtime, scheduler and API (eg: introduced affinity and anti-affinity to scheduler)
• Conducted investigation into deploying a cluster across multiple cloud providers (AWS, GCE, OpenStack, vSphere) and provided a prototype implementation.

As the sole software engineer at Fastcap Systems, I developed firmware for embedded dynamics sensor systems and designed a GUI to interface with an acquire data from these systems.

Capstone Project: Designed a system that utilizes optical sensors mounted beneath keys of an acoustic piano to transmit MIDI data (note number and velocity) via USB with sub-millisecond latency.