# Charles Tark > Full Stack Software Engineer based in NYC | Experience with React, TypeScript, Next.js, GraphQL, PHP Location: New York, New York, United States Profile: https://flows.cv/charlestark Full Stack Software Engineer with a passion for building joy-inducing user experiences via well-architected, performant applications. Has background working in product engineering as well as frontend infrastructure. ## Work Experience ### Frontend Engineer @ Bilt Rewards Jan 2024 – Present | New York City Metropolitan Area ### Senior Software Engineer @ Wayfair Jan 2021 – Jan 2023 | Boston, Massachusetts, United States Helped identify shortcomings in existing monolith systems and championed, architected, and delivered a fully replatformed frontend for Storefront applications with Next.js, migrating relevant functionality (traffic management, auth, pixels, translations, dynamic layouts) and data dependencies into decoupled services and continuous integration pipelines via Turborepo with 0% downtime, improving customer and developer experience as well as application performance, while interfacing with and providing feedback back to Next.js/Vercel developers. Planned and conducted Wayfair’s first Next.js live 100% customer traffic load test via Wayfair Category pages by addressing launch blockers and mitigating risk factors while coordinating with infrastructure teams, product and analytics, enabling stakeholder teams to validate features and inventory tracking data, enabling full launch. Created and standardized new essential libraries and patterns for frontend functionality in the Next.js + webpack replatformed space, including new Scribe 2.0 customer/event tracking interfaces, which were used by engineers across the company developing apps in the new platform, granting product analysts greater visibility into customer journeys across replatformed applications and environments. Created and maintained new monitoring and dashboards for new Next.js application, improving developer and stakeholder clarity and confidence in platform stability, minimizing incidents and manual monitoring efforts, including platform and environment-nuanced performance tracking, error tracking, and Kubernetes deployment statuses. Implemented Product Quickview feature, resulting in 3.88% add to cart rate, $1MM monthly wins. Standardized Next.js best practices through company-wide presentations, documentation, and engineer mentorship. ### Software Engineer II @ Wayfair Jan 2018 – Jan 2021 | Boston, Massachusetts, United States Promoted widespread performance culture as domain expert and lead for performance; developed key documentation, guidelines and SLAs; educated other members of the team, e.g. product, engineering, analytics. Optimized product pages performance through progressive content loading using intentional data and bundle loading patterns to improve RUM metrics by 20%, leading to 0.57% lift in add to cart rate and 3.56% increase in conversion. Identified and addressed performance risks and regressions due to feature rollouts, page redesigns; resulted in all-year-best (52 week low) for performance metrics, surpassing competitors’ load times by 13%. Improved user experience by eliminating disruptive browser reflow by implementing APIs and best practices to enable frontend teams across the organization to create skeleton-state loading flows. Guided new engineers as a Wayfair Labs mentor, onboarding, reviewing, and promoting engineering best practices. Core contributor to greenfield webpack Product Details frontend decoupling initiative, restructuring the frontend application (from pre-existing monolith) into separately maintainable, deployable apps/libraries running in Kubernetes. ### Software Engineer @ Wayfair Jan 2017 – Jan 2018 | Boston, Massachusetts, United States Launched first site-wide implementation of React + Redux + GraphQL as reference to the greater organization to display customer reviews, ratings and photos on all product pages on Wayfair.com and all sister brands and geos. Improved customer experience by implementing features on product pages including product review search, filters and sorting, as well as the product visual options interaction flow. ### Cornell Engineering Peer Advisor @ Cornell University Jan 2014 – Jan 2016 Lead ENGRG 1050 course, mentor new students in engineering topics at Cornell. Act as a resource for first-year students by establishing a strong inter-personal connection through on-going face-to-face and online communications. ### Software Engineering Intern @ Northrop Grumman Corporation Jan 2015 – Jan 2015 Designed and implemented database-driven application in JavaScript and Oracle DB to automate policy compliance for network nodes. Performed database model design, UI/wireframe design, and regression testing. Created foundation for sector-wide software solution. ### Software Engineering Intern @ Northrop Grumman Corporation Jan 2014 – Jan 2014 Designed, implemented, and enhanced tools and software to support the manufacturing role within the Baltimore BWI campus. Implemented new functionality within the Test Data Sheets database software to improve operator efficiency and ease of use. Cooperated with process engineers to add critical changes to emVP web software. ### Harness Subsystem Member @ Cornell University Violet Nanosatellite Project Team Jan 2013 – Jan 2014 Responsible for production, verification, and maintenance of satellite wiring, the electronics backplane, the electrical interface boards. Solved issues regarding system level electrical concerns. ### Mission Operations Subsystem Member @ Cornell University CUSat Nanosatellite Project Team Jan 2013 – Jan 2013 Analyzed flight-related faults, and thermal and power-related functionality. Analyzed telemetry data received during ground passes of the satellite. ## Education ### Bachelor of Science in Computer Science Cornell University Jan 2012 – Jan 2016 ## Contact & Social - LinkedIn: https://linkedin.com/in/cyt25 - Website: http://www.charlestark.com --- Source: https://flows.cv/charlestark JSON Resume: https://flows.cv/charlestark/resume.json Last updated: 2026-04-01