# Brandon Weaver > Senior Staff Software Engineer at Amazon One Medical Location: San Francisco, California, United States Profile: https://flows.cv/brandonweaver Community builder, company leader, teacher, international speaker, and writer. I'm the glue that brings companies together. My belief is that engineers at a Staff+ level are no longer individual contributors, but the representative and delegate for their entire company. To operate effectively I work through others, document heavily, involve and inform executive partners, network teams and individuals, establish systems of mentorship and education to up-level engineers at scale, and more. I have a history of effective leadership in building and founding organizations, notably around developer tooling and education, to meet the growing challenges the business faces. I have operated at companies ranging from five engineers to north of five thousand. The jobs which most interest me are in building communities and companies, and growing engineers capable of one day taking over my role from the ground up. Avoided Domains: Cryptocurrencies, NFTs, DeFi, Web3, or any related spaces Avoided Companies: Facebook, Palantir, and similar unethical companies ## Work Experience ### Senior Staff Software Engineer @ One Medical Jan 2024 – Present | San Francisco Bay Area Principal-scoped engineer leading foundational infrastructure and AI-driven engineering excellence across a complex healthcare technology organization. Architected and delivered event-driven platform processing 4k+ events/second, enabling monolith decomposition and unblocking multiple executive-level strategic initiatives by 6+ months. Cross-organizational influence spanning 6+ Principal Engineers across 3 organizations, with technical leadership over 500+ engineers working on billing systems, AI chat platforms, provider tools, authorization frameworks, scheduling, and search infrastructure within a 15Y+ 1M+ LoC Rails monolith. AI Innovation Leader pioneering responsible AI-assisted development practices as top-tier enterprise AI user. Created methodologies generating 17,000+ lines of tests in under a week across 15+ teams, eliminating 5-6 months of manual engineering effort. Established organizational AI capability through systematic knowledge transfer, with leadership directing teams for AI enhancement guidance. Strategic Technical Leadership preventing 10+ months of wasted engineering effort through evidence-based architectural decisions. Delivered keynote on AI responsibility at major industry conference, influencing senior engineering leaders on inclusive mentorship approaches balancing AI acceleration with foundational learning. Operational Excellence establishing comprehensive standards for feature flag lifecyclew, on-call expectations, and deployment processes adopted organization-wide. Personally removed 150+ technical debt items while creating scalable mechanisms enabling teams to work confidently in complex legacy systems. Leveraging AI tools (Claude, Kiro) to automate complex refactoring and accelerate stability improvements across critical healthcare infrastructure serving millions of patients. ### Board Member @ Ruby Central, Inc. Jan 2026 – Present | Remote Member of the Ruby Central Board of Directors ### Principal Software Engineer - Payroll Services / Lifecycle @ Gusto Jan 2023 – Jan 2024 | San Francisco Bay Area Internal transfer to the Payroll Lifecycle team in the Payroll Services group. Architect of project critical to securing JPMorgan Chase deal on a 3-5 year roadmap impacting all of engineering (200+.) Initial spike leading 30+ direct individuals on 9 teams across 4 orgs on a project originally scoped for 1.5 years in an 8 month timeframe with milestone delivery ahead of schedule on shortened timeframes. Leveraged this project to up-level several engineers and develop architectural maturity across different teams by lining up mutually beneficial projects and growth paths. Leveraged findings from above project to drive engineering maturity efforts around design documents, review process, testing practices, and technical mentoring at a company level. Established core principles of stability, security, performance, and compliance to ensure delivery on large scale projects with greater confidence. Achieved 98% reduction of outages compared to similar projects, totaling 1 outage in 1 year project run. Identified critical investment opportunity on internal stability, presented to executive and financial staff, and received funding to create teams to triage the issue. Direct investment in hiring Senior to Principal level engineers to lead the initiative, including sourcing industry experts to consult with. Project has already prevented millions in losses. Lead for mentorship and testing guilds with a focus on up-leveling engineers across the company and pairing them with mentors which can help them grow more effectively. Additionally automated process of matching several hundred engineers. Lead for Core Interviewers group to standardize and raise the bar for technical interviewing across the company, as well as training and up-leveling new and current interviewers. ### Principal Software Engineer - Product Modularity @ Gusto Jan 2022 – Jan 2023 | San Francisco Bay Area Principal lead of modularity efforts in making working in a large Rails monolith more effective. Utilization of Shopify tooling for modularization, enhancement performed on tools to better fit needs of the company. Re-orientation from rules-based privacy concept to encouraging API owners to create better interfaces via visibility and aggregation of consumer usage to identify existing patterns. Testing Guild founder to increase knowledge of testing across company. Backfilled missing Capybara knowledge with 0 knowledge of tools initially, within 3 months was accepted as a speaker at RailsConf on Capybara in a talk now frequently cited in the industry on Capybara basics. Lead and architect of stability efforts spanning 3 month period across company. Coordinated teams, helped establish action plans, metrics, and expectations for the period to ensure teams were able to pay down debt effectively. ### Principal Software Engineer - Platform / Developers - Frameworks @ Square Jan 2020 – Jan 2022 | San Francisco Bay Area Promoted to Principal Engineer. Continuing work on Ruby architecture and core language groups across the company, and defining and scaling systems for educating engineers through documentation, dedicated lessons, book clubs, and direct mentorship. Created Language Core group to manage language frameworks across Java, Go, Ruby, and other minor languages. Used to drive annual planning, budget, and company-wide language support goals. Expanded these goals into vision documents, 3-5 year roadmaps, growth strategies for hiring and leveling engineers, and supporting languages at scale from a team of three engineers to a proposed organization to formally staff a previously volunteer led effort. Instrumental in the promotion of over 40 engineers, many to Principal and Senior levels, through direct mentorship, education, and advocacy. Later reorganized under Developers organization from Platform. Global Co-Chair of Neurodiversity over community of 1000+ members. Organized events, created manager training materials, introduced default interview accommodations, refined engineering levels, and created support networks for members. Advocated at executive level for accommodations across multiple business units with a history of delivery for the community. ### Staff Software Engineer - Platform - Frameworks @ Square Jan 2018 – Jan 2020 | San Francisco Bay Area Transferred to language support and frameworks team to lead Ruby language infrastructure, practices, documentation, and communities. Leveraged position to run company-wide upgrades and standardization practices across several Rails-based services, including the dedicated upgrade of an internal monolithic service by leading a team of 30 core engineers and 100+ involved engineers across six months, delivering three months ahead of schedule. Continuing efforts in mentorship and establishment of educational courses for newer developers. Responsible for the promotion of over 25 engineers, many of which to senior roles, and begun serving on promotion panels. Direct application of Ruby and Rails expertise to assist with problems around the company, including SQL optimizations on CI/CD systems in a critical path that reduced latency from 6 seconds to 20-50ms. Leveraged this knowledge to teach and run educational programs on SQL optimizations across the company. ### Staff Software Engineer - Platform - Infrastructure Services @ Square Jan 2018 – Jan 2018 | San Francisco Bay Area Promoted to Staff Software Engineer. Transferred to Platform Engineering to work on Infrastructure Automation. Tech: Ruby(Rails), Bash, CentOS Short tenure focused on optimizing aging Rails applications, and learning the inner workings of PXE boot via CentOS disk images used in bare metal hardware provisioning. Automated on top of this process to parallelize work more effectively and remove the need for human intervention. ### Senior Software Engineer - Developers - Frontend @ Square Jan 2017 – Jan 2018 | San Francisco Bay Area Working on the Square Developers team. Tech: Ruby (Rails), Javascript (Ember, Angular, React, Node, Vanilla), NGINX Combination of Frontend web work for customer facing portals and documentation, and backend work around documentation pipelines. Launched developer challenge series: https://medium.com/square-corner-blog/challenge-table-of-contents-generator-c99171fde831 Lead efforts for API versioning in documentation and developer portals: https://medium.com/square-corner-blog/api-versioning-for-connect-v2-2a4fb7298efd ### Systems Software Engineer II @ PlayStation™Network - Sony Network Entertainment Int’l Jan 2015 – Jan 2017 | San Francisco Bay Area Languages: Ruby, Javascript, Bash, Python, Scala, Go, Elixir Frameworks: Rails, NodeJS, AngularJS, Spark, Express Tools: Saltstack, Chef, Hadoop, Kafka, OpenTSDB, Sensu What: Presenting and teaching Scala, Spark, Functional Programming Techniques, and other areas to expand team knowledge base. Continuing work on Rails SOA / AWS interfacing. Contributing back to Open Source tools and resources in the AWS realm as well as working internally to Open Source tools. Transferred to Logging and Monitoring team. Began work on Dashboard design, log processing. Creating database drivers in Go to leverage KairosDB over OpenTSDB for time series processing. Highlights: * Taught and presented on Scala and Spark internally * Preparing Elixir and Erlang courses internally * Mentored developers in Ruby and Javascript * Spoke at local conferences ### Infrastructure Automation and DevOps @ PlayStation™Network - Sony Network Entertainment Int’l Jan 2014 – Jan 2015 Languages: Ruby, Javascript, Bash, Python, Scala Frameworks: Rails, NodeJS, AngularJS, Spark Tools: Saltstack, Chef What: Worked on AWS Automation Suite made with Rails (SOA) and AngularJS for managing deployments and releases dynamically, including incorporation of Chef and Saltstack. Expanded with command line tools to interface with Jenkins and other services using Rails APIs. Some Project Management and Agile experience in creating and maintaining sprints, planning, and execution. Drove progress through establishing workflows, led project demos. Assisted in the teaching and implementation of Scala for usage in Spark including teaching Functional Programming techniques to Java developers. Highlights: * Defined style guides for Javascript and Ruby * Defined documentation standards, starting standards on API documentation * Established Agile methodologies for team * Defined testing standards, retrospectively refined current testing practices * Experimentation with SailsJS to introduce realtime services for monitoring AWS * Encouraged usage of Scala for Spark ### Software Engineer @ Cerner Corporation Jan 2013 – Jan 2014 # Pop Health Frontend Languages: Ruby, Javascript, Python, Bash What: Agile Web Development using Rails connecting to a backend RESTful API. TDD and BDD with RSPEC, Teaspoon, Jasmine, and some Capybara. Some experience with Chef and virtual deployment. Heavy automation of workflow tasks, including aliasing much of anything that's longer than five characters and macroing repetition. Development Support Highlights: 75% reduction in test suite execution time, and 33% reduction in deploy times. Spoke on Pry Debugger at internal developers conference Spoke at multiple internal Ruby meetups Spoke at external KC Ruby meetup # Pop Health Backend Services Languages: Java, Ruby, Scala What: Hadoop and Cloudera stack experience. Use of MapReduce technologies, Solr, Crunch, Avro, and other big data solutions to provide a RESTful API with RestEasy and Jersey. Production Support with Splunk, Zabbix, and RESTful monitors Highlights: Created styleguide for Scalatest ### DevOps Engineer @ Carthage Water and Electric Jan 2012 – Jan 2013 | Carthage, MO Languages: Ruby, PHP, Javascript, Bash, Python, Perl, C#, TCL/TK Worked with commercial and carrier grade wireless equipment to provide wireless internet service to local residents. Created Management, Automation, and Configuration frameworks custom built from scratch in Ruby for several different types of equipment. Utilization of heavy OO Metaprogramming with Ruby in order to provide a more dynamic and flexible framework with which to build and add new forms of equipment. These tools are used to successfully diagnose customer issues of over 1000 wireless units with a team of three technicians, while allowing potential for expansion of the service. Statistical knowledge used to analyze trends in customers equipment performance, as well as preemptive detection of hardware failures. Configuration of and Monitoring with Zabbix. Optimization of MySQL to accommodate large databases in relation to Zabbix and other internal applications. Creation of FreeBSD Web Servers from scratch using NginX/PHP-FPM/MySQL/Varnish/Rails. Automated backups, security, log checking, and intrusion detection systems using tripwire. Using Varnish to capitalize on NginX's strength in handling static files to reduce load and improve server speed. Usage of Excel and Financial knowledge for acquisition of new equipment, proposals for new growth, and analysis of most cost effective deployments of new service locations. Designed graphics and set up wordpress-based sites for the company. Print design for company posters and banners. Even a dab of photography of local landmarks for site use. ### Freelancer @ Freelancer Jan 2008 – Jan 2012 This section details work done while in College and late High School ranging across several disciplines. ## Web Design and Development Created and maintained web pages for local businesses and non-profit organizations. ## Design Creation of posters and other promotional materials for local businesses and non-profit organizations. ## Application Development Worked with local school district to create a test tracker for students with special needs, written in C# and MySQL ## Network and System Administration Residential ethernet wiring, wireless setup, media servers, and various gaming servers setup and maintenance. ## Tech Support Residential calls for repairing computers, replacing components, and performing diagnostic tests and other related repairs. ## Manual Labor Chainsaw operation, carpentry, and other construction tasks related to 2011 rebuilding of Joplin. ## Open Source / Hackathons Hackathon - Creation of disaster response framework post-2011 tornado ### Assistant Coach @ Missouri Southern State University Jan 2011 – Jan 2012 Assisted in coaching Track, primarily Mid-Distance. Use of statistical analysis to design workouts and recovery plans for athletes. ### Technical Intern - Web @ Carthage R9 School District Jan 2008 – Jan 2009 | Carthage, MO Internship with School District during Senior year of High School working on Web Design and Development. ## Education ### CIS in Computer Sciences and Business Missouri Southern State University ### High School Diploma in General Carthage Senior High ## Contact & Social - LinkedIn: https://linkedin.com/in/keystonelemur - Website: http://www.baweaver.com --- Source: https://flows.cv/brandonweaver JSON Resume: https://flows.cv/brandonweaver/resume.json Last updated: 2026-04-01