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I am a Staff Frontend Engineer with 20 years of experience architecting applications, specializing in micro-frontends, scaling, design systems, CI/CD, tooling, leading front-end teams, mentoring engineers, building reusable UI libraries, and testing.I’ve dedicated half my life to building rich user experiences across different technologies, not just in web but also in gaming and mobile; in industries which span from startups, to mid-size businesses, to enterprise corporations.Technical Skills* JavaScript, TypeScript* Redux, Redux Toolkit Query (RTK-Query), Mobx* Micro-Frontends architecture / Webpack Module Federation* Design Systems, UI prototyping, documentation and mentoring* Continuous Integration and Continuous Deployment (CI/CD) with Github/Gitlab Actions* Unit testing end-to-end testing, integration testing, code coverage, visual testing* Responsive design* Accessibility (a11y), Internationalization (i18n), SEO Optimization* Basic knowledge of React Native, MongoDB, Nest.jsToolbox* JavaScript: React, Redux Toolkit Query (RTKQ), Mobx, Node.js, Next.js* Testing: Jest, React Testing Library, Cypress, Mock Service Worker (MSW), Enzyme, Chromatic* Tooling: Webpack, Babel, NPM, NVM, Eslint, Prettier, Husky, Github actions, OpenAPI codegens* Performance: Lighthouse, YSlow, GTMetrix* Documentation: Storybook, TypeDoc, JSDocs* CSS: TailwindCSS, SASS/Compass, Bootstrap, IcoMoon* Mac: iTerm2, Tmux, Oh-my-zsh, VIM, Homebrew, GIT & Node.js* Graphic Editing: Photoshop, Illustrator & Lightroom
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Frontend LeadDesignspecNew York, United States -
President, Front-End Developer And DesignerParce Mar 2009 - PresentFrontend consulting services specializing in React
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React Frontend LeadTransunion Jun 2023 - Dec 2023Chicago, Illinois, Us(Contract via Doran Jones consulting firm)* Lead a team of developers in charge of building a library of reusable components to be used across a large set of applications* Research, drafted and submitted a formal proposal on the technologies, best practices, roadmap, based on the business requirements given to us* Implemented frontend standards and whenever possible; enforce them with automation and CI* Setup Storybook as our system design / live documentation / work environmentIntroduced the team to RFCs and made it part of the process for proposals for new ideas, technologies, approaches, etc* Built CI pipelines for workflows such as builds, linting, unit tests, and Chromatic deploys that run on pull requests* Setup commitlint to ensure our commit messages abide by Conventional Commit standards (Require to ensure successful release-please releases)* Setup release-please to automate our versioned release of our ui library based on SemVer and Conventional Commits* Setup JSDoc to generate DTS files for applications using TypeScript (UI Library was developed in JavaScript per client’s requirement). -
React Frontend LeadDoran Jones Inc. Jun 2023 - Dec 2023Charlotte, North Carolina, Us* Consulting services for their client TransUnion* Lead a team of developers in charge of building a library of reusable components to be used across a large set of applications* Research, drafted and submitted a formal proposal on the technologies, best practices, roadmap, based on the business requirements given to us* Implemented frontend standards and whenever possible; enforce them with automation and CI* Setup Storybook as our system design / live documentation / work environmentIntroduced the team to RFCs and made it part of the process for proposals for new ideas, technologies, approaches, etc* Built CI pipelines for workflows such as builds, linting, unit tests, and Chromatic deploys that run on pull requests* Setup commitlint to ensure our commit messages abide by Conventional Commit standards (Require to ensure successful release-please releases)* Setup release-please to automate our versioned release of our ui library based on SemVer and Conventional Commits* Setup JSDoc to generate DTS files for applications using TypeScript (UI Library was developed in JavaScript per client’s requirement). -
Staff Frontend EngineerSyndio Solutions Oct 2019 - Jun 2023Seattle, Washington, Us* Main architect the new line products built with React, RTK Query and TailwindCSS* Mentor other frontend engineers across the organization, establish patterns and lay the path for them to take ownership of parts of the frontend they wish to own* Implemented frontend standards and setup CI tooling to enforce it* Built a library of reusable UI components that are used by all products. Fully tested in Jest and fully documented in Storybook.* Provide documentation for everything Frontend* Provide decision record (DR) documents for small and large scale architecture projects* Provide system designs of our frontend architecture and upcoming features* Lead the initiative to setup guidelines and processes for proposing new initiatives to the engineering team* Write RFC proposals for new processes, technologies, approaches, etc* Present proposals along proof of concepts demos to the engineering team* Implemented TypeScript in existing product and made it a standard for all of our upcoming products* Responsible for building some of the CI/Github pipelines for the Frontend team including linting, unit tests, compile TypeScript, and more.* Implemented internationalization across all products as we look to expand globally* Work closely with the backend team to design the new API standards* Work with the backend team to generate RTK Query services and TypeScript types directly from the backend using OpenAPI examples with codegens* Setup code coverage which combines reports from Jest and Cypress, sends to Codecov and then blocks PR merge if coverage falls below target -
Software DeveloperThestreet Sep 2017 - Oct 2019New York, Ny, Us• Building application to embed on a third party financial software• Architect front-end application using React, Redux in ES6• Integration with Sailthru and Lytics APIs• Manage Google Analytics • Migration and redesign of one of our properties to Grails/Groovy -
Software EngineerBloomberg Lp Sep 2014 - Apr 2017New York, Ny, Us• Work in the R&D department testing different technologies such as Angular and React to use in the new architecture of upcoming projects• Co-suggested and successfully implemented Agile process in our team using JIRA/Confluence software• Setup acceptance test using Cucumber/Capybara and helped to drastically reduce the amount of bugs in production• Build the UI for the Customer Service Center using React.js and Bootstrap• Use Node.js middleware to standardize backend services into one unified API. • Architected the front-end application using React (Later Flux was introduced)• Migration of a 11 year old application to a new modern architecture• Maintain existing portal while working on the next generation, which merges five different Applications that expand 11 years.• Introduce other tools such as Lint (Later switched to ESlint) and SASS -
Front-End Developer (Contractor)Equinox Oct 2013 - Sep 2014New York, New York, Us• Architect the engine used on all single page applications at Equinox using BackboneJS/MarionetteJS• Introduced the team to MarionetteJS for better separation of concerns and cleaner, more well structured code• Introduced the team to tools that improve front-end development such as SASS and KSS• Created styleguide documentation generated by CSS comments using KSS for currentprojects• Introduced the team to GruntJS and moved many of our dev tasks to it• Maintain mobile application built in Backbone and used by trainers to create appointments,notes, etc.• Convert existing websites to responsive web design using Bootstrap 3 -
Front-End Developer ContractorInrhythm May 2013 - Sep 2014New York, New York, UsInRhythm is a digital agency that provides front-end developer consultants to other firms. So far, I've been sent as a consultant to Amplify and Equinox. -
Front-End Developer ContractorAmplify Apr 2013 - Oct 2013Brooklyn, Ny, UsFront-end Engineer• Leading initiative to standardize the UI in a team of 60 developers split across 8 independentprojects.• Build reusable UI components using Angular.js directives• Write unit tests for existing services, controllers and directives using Jasmine + Karma• Created styleguide documentation generated by CSS comments using KSS• Introduced the team to tools that improve front-end development such as SASS and KSS. -
Front-End ConsultantParent Media Group May 2013 - Aug 2013Turn some of their website properties into responsive web design. -
Director Of Client Side TechnologyNbcuniversal Media, Llc 2010 - Mar 2013New York City, Ny, Us• Redesigned implementation of a ten-year-old forum into a responsive, HTML5, CSS3, Drupal site that uses SASS for better, more maintainable CSS. • Implemented a more robust MV*/AMD based JavaScript library in Drupal that can support more large scale JavaScript applications than the core Drupal.behaviors• Optimization of large client side applications by using better minifiers, loading on demand when rarely used via AMD, lazyloading images and ads and improving frontend caching with ESI fragments/Akamai and Varnish optimization• Mockup of backend data to allow for fast development while the backend team works on the actual backend APIs. • Research & Development of latest front-end technologies• Implementation of JSDOC3 to auto generate documentation out of classes and method’s comments• Provide leadership, code reviews and code standards to a group of engineers from around the world• Work closely with ux and designers to deliver the pixel perfect sites• Occasionally helping the backend and sys admin teams debug critical issues that may hold up a release or are impacting users.• Integration of third party libraries such as Gigya, Badgeville, Omniture, Echo, and Daylife. -
Flash/Web DeveloperOps Divina Dec 2003 - Feb 2009New York, New York, Us• Involved in the design and production of web sites made in XHTML, JavaScript, CSS, PHP, Flash for companies such as Newsweek, Travelzoo, OCRF & Yahoo• Set up and develop themes, modules and plugins for popular content management systems and commerce sites such as Joomla, Wordpress, Mambo, OSCommerce and Drupal • Development of commerce sites using OSCommerce and VirtueMart, as well as, in-house developed commerce sites. • Create Flash Applications for the Web, Web Ad Campaigns, Flash communication with PHP and MySQL, Visualizations, CD-ROM, projection, etc.
Samuel Roldan Skills
Samuel Roldan Education Details
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School Of Visual ArtsComputer Arts - Interactive Media -
Molloy UniversityFine Arts
Frequently Asked Questions about Samuel Roldan
What company does Samuel Roldan work for?
Samuel Roldan works for Designspec
What is Samuel Roldan's role at the current company?
Samuel Roldan's current role is Frontend Lead.
What is Samuel Roldan's email address?
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What is Samuel Roldan's direct phone number?
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What schools did Samuel Roldan attend?
Samuel Roldan attended School Of Visual Arts, Molloy University.
What are some of Samuel Roldan's interests?
Samuel Roldan has interest in Character Design, Web Design, Xml, Everywhere, Art, Web Developement, Music, Architecture, Javascript, Php.
What skills is Samuel Roldan known for?
Samuel Roldan has skills like Javascript, Css, Html 5, Jquery, Web Development, Php, Git, Drupal, Ajax, Xml, Subversion, User Interface.
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