# Samuel Kimama > Senior Frontend Engineer (Staff-level impact) | Frontend Architecture, React, TypeScript, Scalable Systems Location: San Francisco Bay Area, United States Profile: https://flows.cv/samuelkimama Staff-level Frontend Engineer (16+ years) focused on building and scaling complex frontend systems through strong architecture, clear boundaries, and high-leverage engineering practices. I’ve led foundational frontend efforts across startups and large organizations—owning architecture, delivery, and cross-functional execution with product, design, backend, and ML teams. My work centers on scalable React + TypeScript systems, well-defined data and UI boundaries, and patterns that enable teams to move quickly without sacrificing quality. I focus on translating complex system behavior into intuitive, trustworthy user experiences, while improving developer productivity through component systems, testing strategies, and CI/CD practices. Most of my impact comes from: • Defining frontend architecture and system boundaries • Enabling teams through patterns, tooling, and shared abstractions • Driving performance, reliability, and maintainability I’m most effective in roles where I can own frontend systems and help teams move faster with confidence. ## Work Experience ### Senior Software Engineer @ WitnessAI Jan 2023 – Jan 2026 First frontend hire, owning frontend architecture and delivery end-to-end. • Built and launched a React + TypeScript frontend platform, establishing core architecture and contributing to early product revenue • Partnered with ML, product, and backend to translate complex system behavior into intuitive, user-facing workflows • Established component patterns, API contracts, and frontend standards that increased reuse and reduced onboarding time • Drove delivery and release practices, aligning cross-functional teams and enabling rapid reliable iteration • Built and deployed the production frontend platform, improving usability and long-term maintainability ### Senior Software Engineer @ Southwest Airlines Jan 2022 – Jan 2023 Modernized a legacy frontend into a scalable, team-owned architecture. • Led micro-frontend migration (Single-SPA), defining system boundaries and enabling parallel team ownership • Migrated core workflows from Knockout.js to React, introducing a BFF and read model to enable safe, incremental cutover • Drove modernization of legacy frontend systems into maintainable, hook-based micro-frontends with improved scalability • Designed event-driven data flows to support eventual consistency and ensure frontend reliability during migration ### Lead Frontend Engineer @ Confidential Clients Jan 2021 – Jan 2022 Led frontend architecture for a 0→1 product integrating ML and user workflows. • Built and launched a React + TypeScript browser extension and web app enabling real-user validation loops • Partnered with design to prototype and productionalizing workflows, accelerating product iteration cycles • Defined frontend architecture and engineering standards to support scalability and long-term maintainability• Built a shared component library to enable consistent, rapid development across product teams ### Software Engineer @ Survata Jan 2015 – Jan 2020 | San Francisco Bay Area • Led migration from AngularJS to React, improving performance and maintainability • Built a high-scale B2B SaaS platform with data visualization (D3), supporting large-scale user interactions • Established testing, performance, and component standards that reduced production bugs and improved velocity • Mentored engineers and improved onboarding and team quality ### Senior Web Developer @ LinkedIn Jan 2012 – Jan 2014 | Mountain View • Built Trust & Safety UI systems as a solo engineer, supporting platform integrity and safety at scale • Contributed to shared UI components used across the LinkedIn platform at scale ### UI/UX Developer @ Hewlett-Packard Jan 2011 – Jan 2012 | Austin, TX Member of three-person web developer team tasked with getting the new HP shopping experience onto the new CMS. - Designed and implemented JavaScript pub-sub pattern and client-side templates enabling modular development and further speed up page loads. - Worked with an offshore team delegating tasks and ensuring expectations were met. ### Front End Web Developer @ Starbucks Coffee Company Jan 2010 – Jan 2011 | Seattle, WA Worked on readying the front-end for internationalization and enabled marketing campaign reuse by different markets. - Refactored JavaScript, CSS and HTML providing more flexible layouts ensuring consistency between different locales. - Helped develop Starbucks.co.uk site, which leveraged the same codebase as the US site. ### Front-End Engineer @ Eddie Bauer Jan 2010 – Jan 2011 | Bellevue, WA Worked with Fry CMS utilizing YUI, jQuery, XHTML, CSS as well as JSPs to create engaging interactive experiences for users. Part of team guiding as well as developing front-end overhaul project that will optimize the front-end code. Providing not only a quicker more responsive user experience, but also better more maintainable code for other engineers. ### Web Developer @ Resource Interactive Jan 2009 – Jan 2010 | Columbus, OH I have worked on numerous high profile web sites ranging from Victoria's Secret to HP and even a broad smattering of the P&G companies like Herbal Essence, Gain etc; developing solutions dealing mainly with front-end technologies such as HTML CSS as well various JavaScript libraries. I also developed a PHP based solution to interface with Facebook's FBML and FBJS. ### Web Developer @ Information Control Corporation (ICC) Jan 2007 – Jan 2009 ### Content Developer @ Nationwide Financial Jan 2008 – Jan 2008 ## Education ### BS in Computer Science & Engineering The Ohio State University ## Contact & Social - LinkedIn: https://linkedin.com/in/samuelkimama --- Source: https://flows.cv/samuelkimama JSON Resume: https://flows.cv/samuelkimama/resume.json Last updated: 2026-03-30