William Summer

Senior Engineering Manager

Patreon

Feb 2026 - Current (7 months)

Senior Engineering Manager - ET Personalization

Hinge Health

Jul 2024 - May 2025 (11 months)

Leading Personalization Platform Engineering • Manage a high-performing cross-functional team of 12 engineers, delivering the personalization engine that powers exercise therapy playlists for our users. • Drive technical execution and alignment for multi-team projects across distributed teams (US, Canada, India), partnering with Product, Design, and QA. • Cultivated a high-performance culture grounded in psychological safety, empowerment, and accountability. Improved deliverability by 60% in 6 months. Organizational Leadership & Process Improvements • Champion operational excellence (OE): lead app backend OE initiatives, run recurring OE reviews, own on-call processes, and sponsor reliability projects across teams.

Senior Engineering Manager - Communications Platform

Hinge Health

Jan 2021 - Jul 2024 (3 years 7 months)

Built and Scaled Communications Platform Team • Founded, scaled, and led a 12-person full-stack team that delivered critical communications infrastructure—powering appointment scheduling, video/voice calls, and 24/7 messaging between members and their care teams through SMS and in-app messaging. • Partnered with Product, Design, and business stakeholders to align priorities with metrics-driven outcomes such as effective yield and customer retention. Organizational Leadership & Process Improvements • Overhauled the organization's incident response process: defined auditable procedures, led training across hundreds of engineers and engineering managers, and launched a governance committee for ongoing rigor and accountability. • Revamped the e

Senior Engineering Manager

Slack

Jul 2017 - Aug 2020 (3 years 2 months)

Managed multiple teams of developers to build and maintain various applications. Managed a team of eight frontend, backend and video engineers to build and maintain the Slack calls application. Built and managed a team of four developers to build the Posts application. A light weight document editor. Managed a team of nine frontend and backend developers to build and maintain Admin tools to manage Slack at scale.

Senior Software Engineering Manager

GoPro

Feb 2017 - Jul 2017 (6 months)

Engineering Manager

GoPro

Apr 2015 - Feb 2017 (1 year 11 months)

Technical Lead

GoPro

Jan 2015 - Apr 2015 (4 months)

Senior Engineer

ModCloth

Feb 2014 - Feb 2015 (1 year 1 month)

Full Stack Engineer in Supply Sphere at online apparel retailer specializing in vintage-inspired fashion. * Worked closely with product management, project management, and other spheres to product new features. * Led team to add Purchase Order Management to the Supply application. * Led migration of product taxonomies, including data migration and application adjustments, across multiple applications. Technologies: Ruby, Rails, Ember.js, Solr, Sidekiq, RabbitMQ, PostgreSQL, MySQL, Oracle, Nginx, REST APIs, Pair Programming, Agile Methodologies

Engineer

ModCloth

May 2013 - Feb 2014 (10 months)

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Director of Engineering / Lead Engineer

PurePlay.com

Sep 2010 - Feb 2013 (2 years 6 months)

* Led a team of developers to increase gaming options on site from one to 100+ games while enhancing scalability. Went from 100K+ to 10MM+ requests per day. * Lead developer, front and back-end, on revamp of site’s user interface, from initial landing page through choosing a game. * Responsible for keeping the system up and functioning for our 7MM+ members, with up to 10K simultaneous users. * Lead developer on facebook applications built with PHP, Rails and Java and using a REST API. * Responsible for maintaining and enhancing an email system that sends out, on average, 30MM pieces per month. Technologies: Java, Spring, Oracle, MySQL, JavaScript, Tomcat, Hibernate, ActiveMQ, MongoDB, Redis, HTML, CSS, AWS, EC2

Man with Keyboard

Independent Contractor

Jan 2008 - Jan 2010 (2 years 1 month)

Manager, Programming

Lumetra Healthcare Solutions

Oct 2002 - Nov 2008 (6 years 2 months)

Direct programming department, leading and managing all software development, web development, system maintenance, and third-party application integration. Set and track team budget. Manage seven direct reports and multiple external vendors supporting a multi-platform, multi-location infrastructure. Report directly to CIO. Main technologies: ASP.NET 2.0, VB.Net, C#, ASP/VBScript, VBA, .Net Remoting, Web Services, DHTML, AJAX, JavaScript, CSS, Oracle 10g, SQL Server, MS Visual Source Safe, XML, XSLT, XQuery 1.0, TSQL, PL/SQL, Bugzilla, Agile development framework

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Manager of Web Engineering

Jan 2001 - Apr 2001 (4 months)

• Managed web engineering team and distributed web resources across three sites: sega.com, sega.net, and familywonder.com. • Trained development team in key web technologies associated with online gaming and entertainment services. • Defined future technological needs for Sega's US online presence and high-speed gaming network in conjunction with management planning team. • Restructured roles and responsibilities for web development/engineering departments as part of a post-acquisition product development task force. • Redesigned release management process to allow multiple pushes per day Main technologies: Java, JSP, Perl, HTML, XML, UML, ATG Dynamo, CVS, Oracle 8i, Unix, MS Windows 2000

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Manager of Web Development

FamilyWonder.com

Jan 2000 - Jan 2001 (1 year 1 month)

• Managed team of four web engineers for a top-15 content/commerce website. • Managed all dynamic content projects, from initial design to final release. • Redesigned and engineered back-end and presentation layer of site for two major re-launches, serving as front-end architect. • Led design and implementation of new content management system and subsequent conversion of all site content. • Executed 6 category launches within 8 months. • Enhanced back-end functionality, site performance, and site maintenance systems in conjunction with Technology while page views grew to 36 million per month. • Set new company standard for rapid development and deployment of parallel projects Main technologies: Perl, Mason, DHTML, XML, Apache, CVS, Oracle

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