{"schemaVersion":"jobsearcher.job.v1","id":"74a0606d83e8cc3cc0e0547e","url":"https://jobsearcher.com/jobs/74a0606d83e8cc3cc0e0547e","canonicalUrl":"https://jobsearcher.com/jobs/74a0606d83e8cc3cc0e0547e","title":"Lead Software Engineer, React + Front End","description":"About the Role:We seek an experienced Senior/Lead Software Engineer with expertise in React. As a critical development team member, you'll be pivotal in building responsive web UIs for all browsers and maintaining our existing codebase. Most of our code is in React, but knowledge of HTML5, SCSS, and JavaScript (ES6+) is also required for certain site areas. You'll collaborate closely with cross-functional teams (product, design, engineering & quality) to develop new features, improve existing functionality, and ensure the platform is performant, scalable, and secure.Responsibilities:UI Development and Performance OptimizationAs a Senior/Lead Software Engineer, you'll be responsible for creating seamless and high-performance user interfaces using React, Typescript, HTML5, SCSS, and JavaScript (ES6+). Your tasks include:Pixel-Perfect UIs: Craft visually appealing, responsive UI components that adhere to design specifications.Performance Tuning: Optimize performance by identifying bottlenecks, reducing rendering times, and minimizing memory usage.Integration: Integrate with our Ruby on Rails backend to ensure that data is managed efficiently and effectivelyProblem Solving and DebuggingBug Diagnosis: Investigate and resolve complex issues related to UI glitches, data issues, and third-party library conflicts.Code Review: Review other developers' code for functionality, concision, and maintainability.Code Quality and TestingClean Code Practices: Write well-structured, maintainable JavaScript code that passes linters and testing.Handling Tech Debt: Assist in refactoring legacy code with an eye toward simplicity, maintainability, and creating reusable components.Software Development PracticesDesign, develop, and maintain high-quality, production-ready code and markup.Write clean, well-documented, and testable code adhering to best practicesCollaborate with product managers and designers to understand requirements and translate them into technical solutionsParticipate in code reviews and knowledge sharing within the engineering teamStay up-to-date with the latest advancements in React and related technologiesProactively identify and address potential technical issues and bottlenecksContribute to the continuous improvement of our development processes and infrastructureQualifications: 5+ years of experience as a React developer5+ years of experience with HTML5, SCSS, and JavaScript (ES6+)Strong communication skills and a proactive approach to anticipating edge cases & clarifying requirementsStrong debugging skills with the ability to find and solve problems with minimal documentation or outside help.Proven ability to write clean, efficient, and maintainable codeExperience with testing frameworksExperience with deployment and infrastructure tools like AWS, Kubernetes, or similarExperience with version control systems like GitHubFirm grasp of RESTful APIs, and asynchronous programming and testing using PostmanExcellent communication and collaboration skillsPassion for building impactful products and a desire to make a differenceBonus Points: Experience with continuous integration and deployment (CI/CD) pipelinesExperience with Ruby on Rails framework and patterns","company":"Sparktek","rawCompany":"sparktek","city":"New York","state":"NY","isRemote":false,"isActive":false,"createdAt":"2026-06-02T01:45:11.768Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Lead Software Engineer, React + Front End","description":"About the Role:We seek an experienced Senior/Lead Software Engineer with expertise in React. As a critical development team member, you'll be pivotal in building responsive web UIs for all browsers and maintaining our existing codebase. Most of our code is in React, but knowledge of HTML5, SCSS, and JavaScript (ES6+) is also required for certain site areas. You'll collaborate closely with cross-functional teams (product, design, engineering & quality) to develop new features, improve existing functionality, and ensure the platform is performant, scalable, and secure.Responsibilities:UI Development and Performance OptimizationAs a Senior/Lead Software Engineer, you'll be responsible for creating seamless and high-performance user interfaces using React, Typescript, HTML5, SCSS, and JavaScript (ES6+). Your tasks include:Pixel-Perfect UIs: Craft visually appealing, responsive UI components that adhere to design specifications.Performance Tuning: Optimize performance by identifying bottlenecks, reducing rendering times, and minimizing memory usage.Integration: Integrate with our Ruby on Rails backend to ensure that data is managed efficiently and effectivelyProblem Solving and DebuggingBug Diagnosis: Investigate and resolve complex issues related to UI glitches, data issues, and third-party library conflicts.Code Review: Review other developers' code for functionality, concision, and maintainability.Code Quality and TestingClean Code Practices: Write well-structured, maintainable JavaScript code that passes linters and testing.Handling Tech Debt: Assist in refactoring legacy code with an eye toward simplicity, maintainability, and creating reusable components.Software Development PracticesDesign, develop, and maintain high-quality, production-ready code and markup.Write clean, well-documented, and testable code adhering to best practicesCollaborate with product managers and designers to understand requirements and translate them into technical solutionsParticipate in code reviews and knowledge sharing within the engineering teamStay up-to-date with the latest advancements in React and related technologiesProactively identify and address potential technical issues and bottlenecksContribute to the continuous improvement of our development processes and infrastructureQualifications: 5+ years of experience as a React developer5+ years of experience with HTML5, SCSS, and JavaScript (ES6+)Strong communication skills and a proactive approach to anticipating edge cases & clarifying requirementsStrong debugging skills with the ability to find and solve problems with minimal documentation or outside help.Proven ability to write clean, efficient, and maintainable codeExperience with testing frameworksExperience with deployment and infrastructure tools like AWS, Kubernetes, or similarExperience with version control systems like GitHubFirm grasp of RESTful APIs, and asynchronous programming and testing using PostmanExcellent communication and collaboration skillsPassion for building impactful products and a desire to make a differenceBonus Points: Experience with continuous integration and deployment (CI/CD) pipelinesExperience with Ruby on Rails framework and patterns","datePosted":"2026-06-02T01:45:11.768Z","dateModified":"2026-06-02T01:45:11.768Z","hiringOrganization":{"@type":"Organization","name":"Sparktek","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"New York","addressRegion":"NY","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"74a0606d83e8cc3cc0e0547e"},"url":"https://jobsearcher.com/jobs/74a0606d83e8cc3cc0e0547e"}}