# Marc Cooperstein > Senior Frontend Engineer, Senior Software Engineer, Senior Fullstack Engineer | JavaScript, React, Typescript, GraphQL | Dog Dad est. 2015, Human Dad est. 2024 Location: San Francisco Bay Area, United States Profile: https://flows.cv/marccooperstein When I'm not building engaging user experiences for millions of users, you can usually catch me out on the soccer field or being overly competitive in trivia. I am a motivated professional with an aptitude for innovation and creative problem solving. Experienced in creating logical and innovative solutions, designing best-fit solutions for multifaceted interactive media, including web design and web development. Also, an accomplished communicator who continues to stay at the cutting edge of web development and technology providing front-end technology expertise. I am able to direct multiple tasks effectively while being able to master innovative software and tools, with a passion for new technologies and trends. My work experiences have allowed me to strengthen my abilities in programming, technical analysis, troubleshooting, resolving software problems, software engineering, and product development. I'm someone who you can count on to show up and get the job done. I make it a priority to learn all I can to improve what I know and what I can offer my employer. I think this is one of the personal attributes that set me apart. Additionally, I pride myself on being organized, detail-oriented and a capable manager of my time. ACCOMPLISHMENTS at Yahoo!: - Led front end development for ‘What-to-watch’ v1 and v1.2 experience for desktop and mobile web utilizing JavaScript, HTML, and CSS, indexing 1.3M+ movie and tv show entities to recommend new content to users. - Functioned as engineering lead for Yahoo Search’s Olympics 2024 coverage, composed of 15 modules and rolled out to the US and 21 international markets; FE portion of experience built in JavaScript and Handlebars. - Led front end engineering with JavaScript, Handlebars, and CSS for Olympics 2020, Olympics 2022, and World Cup 2022 experiences on Yahoo! Search, which drew over 1M page views for the duration of each event. Feel free to reach out via email at mcooperstein@gmail.com. ## Work Experience ### Software Engineer II (Search Front-End) - JavaScript, GraphQL, Handlebars.js, CSS @ Yahoo Jan 2023 – Present | Sunnyvale, California, United States - Led front end development for ‘What-to-watch’ v1 and v1.2 experience for desktop and mobile web utilizing JavaScript, HTML, and CSS, indexing 1.3M+ movie and tv show entities to recommend new content to users. - Functioned as engineering lead for Yahoo Search’s Olympics 2024 coverage, composed of 15 modules and rolled out to the US and 21 international markets; FE portion of experience built in JavaScript and Handlebars. - Implemented ‘Search Refresh’ initiative as part of Search Modernization team, revamping UI components following Yahoo!’s CSS design system using JavaScript and HTML. - Migrated Yahoo! Search’s Sports experiences from consuming REST APIs to GraphQL APIs using JavaScript, improving GraphQL endpoint coverage to over 80%. ### Software Engineer (Search Front-End) - JavaScript, Handlebars.js, CSS, AJAX @ Yahoo Jan 2018 – Jan 2023 | Sunnyvale, CA - Led front end engineering with JavaScript, Handlebars, and CSS for Olympics 2020, Olympics 2022, and World Cup 2022 experiences on Yahoo! Search, which drew over 1M page views for the duration of each event. - Created new mobile movie experience, ‘KGB Movies’, improving UX via design and navigational enhancements, and multi-day movie ticket listing feature using JavaScript, HTML, and CSS, boosting CTR by 30%. - Interfaced with Walmart Grocery API to take user’s location and link them to nearest Walmart and display common grocery items and allow them to add to cart in Yahoo! Search using JavaScript. - Provided frontend support for Yahoo Search’s Cricket World Cup and FIFA Women’s World Cup DD coverage. - Collaborated with design and content teams to develop several Yahoo Search US 2018 mid-term Election DDs, which saw over 2.5 million page views during the election cycle. - Developed reusable movie DDs used for Yahoo Search Pringles Project (Oscar Movie Coverage), which saw over 200,000 page views and 50.73% click rate during the weekend of the Oscars telecast. ### Software Engineer - JavaScript, React, React Native @ Analogy Plus LLC Jan 2018 – Jan 2018 | San Francisco Bay Area - Developed mobile app prototype for image sharing social media platform in JavaScript, React Native, Node.js, Express, and PostgreSQL, where users leave comedic comments in an effort to achieve the most “laughs.” - Redesigned websites using JavaScript, ReactJS, NodeJS, Express, and PostgreSQL, improving performance, progressive web app, accessibility, and SEO scores by as much as 50%. - Collaborating with clients to help determine appropriate system design and architecture for their projects. ### Software Engineering Instructor & General Manager @ theCoderSchool Jan 2016 – Jan 2018 | San Mateo, CA - Led team of 15 instructors teaching over 200 students fundamentals of computer programming in JavaScript. - Developed JavaScript coding lesson plans and curriculum surrounding creation of single page applications, webpages, and canvasJS games shared with all 20 locations. - Collaborated on design and testing of payroll calculator tool using Pike13 API, automating company’s payroll process and saving all school owners/managers 50+ hrs of work per year. - Increased enrollment at San Mateo location by over 75%, giving school greatest highest student count and largest annual revenue (over $500,000) out of all 20 locations. - Handled all San Mateo client outreach and maintained San Mateo school’s 9+ CES rating - Maintained and updated San Mateo Coder School website using in-house CMS, HTML5 and CSS3. - Led in-person training and onboarding of over 50 managers and engineers instructors at franchise locations. ### Frontend Web Developer - JavaScript, React @ DISCERN Jan 2017 – Jan 2017 | San Mateo, CA I was contracted to develop the front-end side of DISCERN's website/platform. During the development period, I worked with a graphic designer to turn the client's page mockups into a fast single-page application, while making all deadlines. The front-end site was later turned over to another development team that handled the integration to the back-end of the platform. ## Education ### Bachelor of Science - BS in Double Major: Business Management Economics & East Asian History University of California, Santa Cruz ## Contact & Social - LinkedIn: https://linkedin.com/in/mcooperstein1990 - Portfolio: http://www.mcooperstein.com - GitHub: http://www.github.com/mcooperstein --- Source: https://flows.cv/marccooperstein JSON Resume: https://flows.cv/marccooperstein/resume.json Last updated: 2026-03-30