Tom Calloway Email & Phone Number

Portugal

* Iterating with beta users on a multi-faceted Phoenix LiveView web app (https://peakpace.app) that quantifies and optimizes an organization's work delivery throughput, time-to-completion, and actor capacity utilization, to achieve measurable, lean delivery and prediction accuracy improvements. - Elixir technologies: Surface UI components, Commanded.

San Francisco, CA, US

* Delivered HRIS features for the flagship product by implementing Public and Internal REST APIs, built with Elixir and Phoenix with code organization that conformed to disciplined team design standards.

New York, NY, US

* Built a logic-rich LiveView dashboard for daily status data, to flag onboarding issues and progress for each high-volume client, involving a complex accounting integration with many potential failure points.* Provided detailed feedback on specialized topics during that system’s maintenance phase.* Analyzed the Engineering Team’s software feature delivery.

New York, NY, US

* Leveraged Elixir and Phoenix to expose AI-driven accounting functionality through a GraphQL API, delivering a steady, high-volume flow of code contributions for new features, enhancements, and fixes for accounting system integrations and customer-specific projects.* As API Team Lead, in addition to brainstorming meetings and Slack channels dedicated to.

* Developed prototype engine in Elixir to achieve efficient collection and inference of SaaS metrics by identifying the theoretical minimum number of necessary variables for a given SaaS model.* Conducted randomized feature-building experiments on the code-writing efficiency of 7 front-end and 3 back-end web frameworks, to evaluate and select a technology.

* Reached parity with legacy Rails API by expanding functionality of Clojure back-end Lacinia GraphQL API, storing to a Datomic database and pulling via custom HugSQL from a legacy MySQL database.* Cut third-party callback response times by offloading async work, increasing success from 92% to 99%.* Generated statistics for customer compliance with each.

Chicago, Illinois, US

* Built v1.0 of "Smart Ice" Rails logic, to calculate the requisite quantity of ice packs to preserve boxed meal-kits based on the local weather of delivery destinations.* Took prototype, re-wrote in Rails, and shipped the team's first tablet web app to track meal bag production rates, then constructed and enhanced additional Rails tablet apps, to monitor.

* Delivered iterations for client's applications and for new products validated through lean customer development.* Built a custom, functional-style Ruby framework that nests inside a Hanami umbrella web app (portable to Rails) using an application-specific gem - to leverage dry-rb and rom-rb for expressing the data model and domain logic - to define the.

Chicago, Illinois, US

* Built, to precise designer specifications, React client app and Rails API features identified by lean customer discovery for an in-classroom, project-based learning experience incorporating authentic expression, autonomy, peer and teacher feedback, structural aids for writing, and differentiated learning.* Improved market fit and funnel metrics for a.

Chicago, IL, US

* Developed high-value features for a flagship consumer-facing web app that promotes deals for an arbitrary number of featured and ongoing special occasions, reaching page view daily peaks between 10k – 100k rpm.* Built sales lead sourcing and deal geographic dispersion analysis/scheduling internal Rails apps.* Iterated high-adoption Rails app to support.

* Engaged by major retailer to pair-program well-tested feature sets for a web marketplace and B2B API, in Rails.

* Developed a unified lead engagement Rails web app with a small Agile team, to provide a major insurance client's staff with access to new leads captured from printed cards and diverse electronic sources, fairly assigning leads to independent local agents, tailoring call scripts, and guiding agents to qualify, track, and report leads. * Led efforts to.

* Engaged users to craft a Grails/Groovy app that ingested broker-reported failed trade data and integrated the search and matching of those hedge fund trades into a simple dashboard.* Extended and supported a legacy JRuby on Rails app to periodically send parameterized Back Office reports with optimized custom SQL queries from trading databases to.

Madison, WI, US

* Performed emissions calculations, analyzed rule applicability and limits, and wrote enforceable permits.* Actively participated on the Air Permit Improvement Initiative team by analyzing Registration Permit web app requirements, proposing permit process streamlining measures, and testing app prototype usability.

M.S., Computer Science

B.S., Chemical Engineering