{"schemaVersion":"jobsearcher.job.v1","id":"16daaf18747ea1c7be3a148f","url":"https://jobsearcher.com/jobs/16daaf18747ea1c7be3a148f","canonicalUrl":"https://jobsearcher.com/jobs/16daaf18747ea1c7be3a148f","title":"Frontend Engineer (JavaScript + Custom Framework)","description":"Frontend Engineer (JavaScript + Custom Framework)Location: LATAM, RemoteCompany: Base LabsPosition type: Full-timeWe’re looking for a Senior Frontend Developer who’s passionate about clean code, architecture, and performance. You’ll join a small, focused team working on a high-traffic e-commerce using a custom framework based on Backbone.js, with Node.js and Express for some backend tasks.We do not use React, Vue, or Angular. This project requires strong JavaScript fundamentals and a curious mindset to navigate and understand a large, actively evolving codebase with limited documentation.About the role:You’ll work on an e-commerce platform with millions of monthly visits.You’ll be part of a technical team that prioritizes performance and stability.We use an in-house framework based on Backbone.js, server-side rendering with Node.js, and orchestration with Nginx and Express.Work distribution: 80% frontend / 20% backend.You’ll need to review, understand, and propose improvements directly in the source code. Documentation is limited, so your analytical skills and technical curiosity will be key.Requirements:4+ years of professional frontend development experience.Advanced proficiency in JavaScript and TypeScript.Solid experience with Node.js, Express, and server-side rendering concepts.Knowledge of relational databases and integration with REST APIs (JSON).Fluent English, written and conversational (day-to-day work is 100% in English).Knowledge and practical application of principles like SOLID, ACID, and frontend/backend architecture best practices.Nice to haveExperience working on legacy products or codebases with little/no documentation.You’re self-taught and excited to understand how things work.You’re not afraid to dive into complex code and leave it better than you found it.","company":"Base Labs","rawCompany":"base labs","city":"Northern Cambria","state":"PA","isRemote":false,"isActive":false,"createdAt":"2026-05-17T17:41:18.425Z","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":"Frontend Engineer (JavaScript + Custom Framework)","description":"Frontend Engineer (JavaScript + Custom Framework)Location: LATAM, RemoteCompany: Base LabsPosition type: Full-timeWe’re looking for a Senior Frontend Developer who’s passionate about clean code, architecture, and performance. You’ll join a small, focused team working on a high-traffic e-commerce using a custom framework based on Backbone.js, with Node.js and Express for some backend tasks.We do not use React, Vue, or Angular. This project requires strong JavaScript fundamentals and a curious mindset to navigate and understand a large, actively evolving codebase with limited documentation.About the role:You’ll work on an e-commerce platform with millions of monthly visits.You’ll be part of a technical team that prioritizes performance and stability.We use an in-house framework based on Backbone.js, server-side rendering with Node.js, and orchestration with Nginx and Express.Work distribution: 80% frontend / 20% backend.You’ll need to review, understand, and propose improvements directly in the source code. Documentation is limited, so your analytical skills and technical curiosity will be key.Requirements:4+ years of professional frontend development experience.Advanced proficiency in JavaScript and TypeScript.Solid experience with Node.js, Express, and server-side rendering concepts.Knowledge of relational databases and integration with REST APIs (JSON).Fluent English, written and conversational (day-to-day work is 100% in English).Knowledge and practical application of principles like SOLID, ACID, and frontend/backend architecture best practices.Nice to haveExperience working on legacy products or codebases with little/no documentation.You’re self-taught and excited to understand how things work.You’re not afraid to dive into complex code and leave it better than you found it.","datePosted":"2026-05-17T17:41:18.425Z","dateModified":"2026-05-17T17:41:18.425Z","hiringOrganization":{"@type":"Organization","name":"Base Labs","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Northern Cambria","addressRegion":"PA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"16daaf18747ea1c7be3a148f"},"url":"https://jobsearcher.com/jobs/16daaf18747ea1c7be3a148f"}}