Tom Harrison

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Lead Architect

May 2023 - Current (3 years 6 months)

I lead the definition and development of major updates to ASL (American Sign Language) video-based skills assessments for deaf school-age kids. Also defined, designed, and lead team implementing new video-based survey system, with ASL-centric user interface, plus database and systems for defining survey back end. Designed and built secure, containerized, scalable, automated, cost-efficient AWS architecture to replace one that wasn’t any of these. Built on AWS Cloud via Terraform IaC. Designed secure + best practice VPC network and VPN. System ran in ECS containers for front-end UI and back-end API to an RDS database. Created GitHub Actions CI/CD to deploy services in ReactJS via Django APIs. Built automation to link all the parts. Nearly al

Sr. Data Engineer

Clearbit

Aug 2022 - May 2023 (10 months)

Built data and analytics pipelines to measure and ensure the quality of data. Used analysis results to isolate and improve product, and allow data science team to far more effectively access and utilize the rich usage data that was previously buried.

Senior Infrastructure Engineer

Clearbit

Jan 2020 - Sep 2022 (2 years 9 months)

Architecture Lead

Paytronix Systems

Jan 2018 - Jan 2019 (1 year 1 month)

I identified and implemented best practices to keep our customer data safe, and our costs low. ● Security: ran pen-test, automated patching, corporate awareness, training, mentoring throughout organization ● Directed SOC1 audit, PCI compliance, GDPR effort ● Reimplemented Puppet for provisioning, configuration

Data Engineering Lead

Paytronix Systems

Jan 2015 - Jan 2018 (3 years 1 month)

I migrated our on-prem Hadoop into AWS Cloud; I designed a new platform for analytics, ML, reporting. ● Architected complex process of migration to cloud ● Replaced with AWS EMR, PySpark, S3, Athena, SageMaker ● Built CI/CD pipeline allowing multiple deploys per day ● Reduced costs by half, increased scale by 2x or more ● Oversaw implementation of machine learning processes

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Director, Engineering

Pubget

Jan 2012 - Jan 2015 (3 years 1 month)

I redesigned and implemented software, systems, processes to turn a cool, but buggy and unstable search engine used by scientists into a reliable, performant, secure, and manageable system. ● Replaced outdated/costly Apache Solr with ElasticSearch; 10x faster, lower latency, resilient architecture ● Lead RoR version upgrade; 3x faster, ½ the cost ● Mentored my team to embrace Ruby/Rails best practices ● Designed end-to-end CI/CD pipeline that ran automated test, staging, and (eventually) production deployments

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VP Engineering

Jan 2010 - Jan 2012 (2 years 1 month)

I built a new software stack with Rails; designed cloud architecture, and deployed the new version in eight weeks. Game changer! ● Built new Ruby on Rails, PostgreSQL, AWS infrastructure ● Implemented CI/CD pipeline for fast, reliable deployments ● Designed website A/B Testing; user engagement up 30x

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VP Engineering

Jan 2009 - Jan 2010 (1 year 1 month)

I architected a multi-tenant SaaS product on a cloud platform with automated testing & deployment. “Hubspot for Energy Pros”. ● Implemented multi-tenant SaaS-based CMS ● Replaced insecure e-commerce tool w/open-source alternative

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VP Engineering / Founder

Digital Advisor LLC

Jan 2002 - Jan 2009 (7 years 1 month)

I led a small team of amazing engineers as we developed a new site like Trip Advisor, but for products like cameras, computers, TVs. ● Designed, built Java platform; system live in 3 months ● Migrated from on-prem hosting to AWS; reduced costs by 2x ● Designed product scoring algorithm to rank products ● Built configurable web crawler to gather reviews, ratings ● Analytics for SEO, A/B testing process increased engagement

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VP Engineering / Founder

Direct Hit (Ask Jeeves)

Jan 1998 - Jan 2003 (5 years 1 month)

My team and I built a search engine. I designed, built, and managed the software, networking, analytics. Direct Hit processed thousands of searches per second. We were acquired by Ask Jeeves in 18 months. ● Built our system as a REST web service used by major search engines of the day ● Designed a distributed web-crawling and indexing system able to handle a billion web pages ● At Ask Jeeves, led a 70+ person team developing a “corporate search” engine, including design of new NLP technology

Previous Work Experience

Various Employers

Jan 1984 - Jan 1997 (13 years 1 month)

● Cambridge Systematics: Software Development Manager ● Consultant: worked with Fortune 500 companies to develop and deliver various software ● Easel Corporation: Director of Customer Service, built, managed Customer Support, Training, Consulting teams

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Tom Harrison

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