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Senior Front End Engineer at Jiffy. We are seeking a Senior Front End Engineer at Jiffy to lead the design and development of high-performance, real-time web interfaces that power our user experience. You'll own front-end architecture, collaborate closely with product and ML teams, and help shape the user experience for tools that enable customers and businesses to act faster and smarter. You’ll collaborate across product, engineering, and data science to turn complex systems into simple, elegant software. At Jiffy, your work will directly impact customer decisions in real time, and you’ll help define the front-end foundations as we scale.. Basic Qualifications. 5+ years of non-internship professional front end, web or mobile software development using JavaScript, HTML and CSS experience. 5+ years of front-end developer creating prototypes or wire-frames for enterprise web applications or workflows experience. Experience developing with MVC/MVM frameworks (e.g. React.JS, AngularJS, Vue). Understanding of real-time data flows, streaming APIs, and dynamic content rendering. Experience with performance optimization for high-frequency UI updates and complex state changes. Knowledge of accessibility standards and internationalization best practices. AWS service launch / production operational experience desired.. Preferred Qualifications. Knowledge of web services technologies such as SOAP, HTTP, WSDL, XSD, and REST. Experience in a broad range of software design approaches and common UX patterns.. Experience working in a startup/fast-paced environment where priorities shift quickly.. Location:. Irvine, CA. Why You Will Love Working At Jiffy. Opportunity to grow company market share through innovation in the rapidly evolving e-commerce, AI, and image processing space.. Thrive in a collaborative, high-growth environment where your ideas directly influence how Jiffy evolves as a leading e-commerce destination.. High visibility and influence in solving complex problems and delivering cutting edge solutions resulting in direct impact on Jiffy’s seamless customer experience.. Access to career development opportunities in a company that invests deeply in professional growth.. Company Location: United States.