William Hamilton

Contact

beiller@gmail.com
647.389.1872
https://www.linkedin.com/in/bill-hamilton-42b53325/
https://beiller.github.io/resume.html

PROFESSIONAL SUMMARY

Veteran engineering manager with a long-standing career in software development, including 4+ years leading highly technical teams to deliver complex software solutions
Proven ability to drive cross-functional collaboration, optimize processes that reduce costs, and ensure the timely delivery of projects
Skilled in fostering a culture of innovation, mentoring engineers, and aligning technical initiatives with business objectives
Track record of improved performance and increased reliability through an observability first methodology

TECHNICAL EXPERTISE

Leading high-performing teams of up to 10 engineers
Procedural, Object Oriented, and Functional programming languages
Over 20 languages (Top 5: Python, TypeScript, Java, Go, C++)

ARCHITECTURE & INFRASTRUCTURE

Serverless architecture with AWS Lambda and Azure Functions
Event-driven architecture with Apache Kafka, RabbitMQ, and Amazon SQS
REST-based APIs using Node.js, Python, and Java
Microservice orchestration with Docker, Kubernetes, and Terraform
Stack management using CloudFormation and Serveless Framework
Observability using Sumo, Datadog
Amazon IaaS (AWS, EC2, Elastic Beanstalk)
Google Cloud IaaS (GCP, Compute Engine, Cloud Storage)
Azure PaaS/IaaS (Azure App Service, Azure Storage)

EXPERIENCE

Flexport

Order Management / Optimization (Dev Manager II)

Dec 2023 - Oct 2024

Led a team of 10 engineers maintaining high-volume, mission-critical shipping APIs with 99.9% uptime, processing 10k - 50k orders per day
Defined and executed a technical strategy that reduced order processing latency by 30%, driving alignment with key business objectives
Implemented Agile methodologies, increasing project delivery speed by 30% and improving code quality, measured by a reduction in defects during deployment of code changes
Designed from the ground a support rotation decreasing critical ticket volume by half using a dashboard based approach and pre-emptively handing issues
Sunset and streamlined legacy code, reducing technical debt and increasing development velocity by 30% eliminating frequent dependency upgrades in a microservices architecture
Managed resource planning and optimized team workload, improving utilization efficiency by 25%
Collaborated with cross-functional teams, resolving technical challenges and delivering high-quality software products in partnership with Product, QA, and Operations teams.

Optimization Engineering (Dev Manager)

Jun 2023 - Dec 2023

Summary: Applied machine learning and optimization techniques to drive cost savings and improve supply chain efficiency - Continue managing the team after the aquisition of Shopify Logistics by Flexport - Led complex projects between data science and operations to develop and implement inventory management systems using advanced machine learning models. - Successfully shipped a major inbounding algorithm update, resulting in a 3 million reduction in fulfillment costs per year and a significant reduction in split shipments. - Collaborated with cross-functional teams to ship billing feature org wide resulting in moving beta products to a billable $3 million / year ARR (billing for pack slips) - Developed and maintained complex algorithms and models, leveraging expertise in data science and machine learning to drive business value.

Shopify

Optimization Engineering (Dev Manager)

Nov 2022 - Jun 2023

Manage a team of 5 engineers specializing working on optimization in Shopify Logistics working closely with high level data science team on ML related initiatives
Organizing burst / event planning for geographically diverse team in the East / West cost of USA / Canada

Operations Research (Senior Developer)

Apr 2022 - Nov 2022

Working in operations research team doing optimization and modelling
Team lead working closely with data science on implementing placement algorithms
Developed network simulation software which was used to compare placement algorithms and work out estimated time to results for our new placement implementation
Provide software best practise and guidance for data science teams writing code
Mentor junior engineers and making them comfortable shipping PRs

Uplift

Senior Software Engineer

Sept 2019 - Nov 2022

SWE responsible for various microservices APIs and serverless backends on the credit / lending team
Perform some management duties such as interviews and performance reviews as well as leadership of small engineering team of 3 and hands on coding 50/50 split
Responsible for all things related to underwriting backend services, deploying and maintaining machine learning models trained by data science teams used to underwrite loans
Develop faster validation and backtesting pipelines for model implementation and unified feature generation to speed up deployments of new models
Unified many critical credit APIs with zero downtime and zero bug launches through the extensive use of test driven development (TDD) for critical APIs

Liquor Control Board of Ontario (LCBO)

Senior Application Developer

March 2017 - Sept 2019

Development team lead at the world's largest alcohol retailer coordinating cloud APIs with beautiful customer focused interfaces, mentoring internal, external, on-shore and off-shore development teams

Performing code reviews, mentoring developer teams, approval of source code changes based on pull request workflows
Leading e-commerce backend and frontend development team of 4 using Java/JSP and Javascript
Leading University of Waterloo co-op teams of 4 using React, Angular, and Ionic with node js backends and TypeScript to build lightweight B2B applications
Lead engineer for LCBO public APIs to query Inventory, B2C Order Placement and B2B Integrations with autoscaling back-ends requiring sub-second response times
Launched cutting edge projects like Foodora courier delivery (B2B Integrations)
Architect and implement cloud based continuous integration pipelines including automated security scans, unit tests, and smoke tests using selenium scripts running in Docker containers
Continuous Deploy of applications to cloud PaaS providers such as Microsoft Azure, Google Cloud Platform, and Amazon Web Services
Integration of cloud technologies with legacy infratructure (Migration to git, Containerization)

Senior Programmer Analyst

March 2011 - March 2017 (6 years 1 month)

LCBO Mobile App Sole Developer (2016 Android / IOS)
Java, J2EE development
SQL Mastery in Oracle PL/SQL, Teradata, DB2, Postgres, MySQL
Informatica, Sales forcasting, Demand chain and supply chain applications, chemical lab software and equipment support
Mentoring team members
Mobile B2B applications for tracking products and inventory management

CityDirect dot info

Senior Application Developer

September 2007 - March 2011 (3 years 7 months)

Cloud based telephony systems, advanced CRM data engineering to enable marketing teams
MySQL and Postgres Distributed Data Architecture (replication, clustering)
Lead Application Developer using PHP and Python
Networks (advanced routing and load balancing)
Web crawling, CRM applications, user interface design and optimization, application development and life cycles
Writing great documentation

EDUCATION

Certificate in Project Management, University of Toronto, Toronto Ontario Canada
Honours Bachelor of Computer Science, Laurentian University, Sudbury Ontario Canada

ADDITIONAL PROJECTS

Godot game engine

https://github.com/godotengine/godot (Contributor) Bugfix and dual quaternion implementation

llama.cpp - Facebook Large Language Model in C++ (Mar 2023 - Apr 2023)

https://github.com/ggerganov/llama.cpp (Contributer) Added repeat penalty feature. Repo became official part of Meta Llama 3 download package. https://github.com/ggerganov/llama.cpp/pull/20

Laydelmi app for Android - Video Streaming Platform for Cooking

Check out the app on Android app store!

Older Projects

Containerizing PyTorch machine learning facial reconstruction application https://github.com/beiller/3DDFA
Ammo.js - A WASM compiled port of Bullet physics library to Javascript contributor https://github.com/beiller/ammo.js
C++ port of liquibooks to Python, an order matching engine https://github.com/beiller/python-liquibook
Sparechange dot io alternative monetization platform