Frontend Developer

We're seeking a Senior Frontend Engineer for our X team. As a Frontend Engineer, you will play a critical role in developing and enhancing our Frontend applications.Drawing on your strong background in backend development and web technology, you will be tasked with building and maintaining sophisticated backend APIs and services. Your efforts will be vital to providing unmatched and unique advertising experiences, setting a standard in user engagement.With a solid track record of crafting complex backend systems, you will integrate into our Agile team to develop robust and scalable backend services. These services are crucial in supporting our dynamic frontend and mobile applications and our comprehensive financing solutions, ultimately transforming how millions of users worldwide interact with shopping, payment, and banking platforms.Your responsibilities● Agile Development: Lead and drive Agile methodologies within the team, ensuring adherenceto the Scrum framework. Mentor team members through all phases of the software developmentlifecycle, from planning and design to deployment and maintenance.● Feature Implementation: Collaborate closely with the Product team to deeply understandrequirements and translate them into functional, efficient, and high-quality frontend code.● Collaboration: Partner with Backend, Mobile, and QA engineers to ensure seamless backendintegration and functionality with other software ecosystem components. This includescoordinating development efforts, troubleshooting, and supporting each other to meet projecttimelines.● Cross-Team Collaboration: Actively participate in Frontend Chapter meetings and initiatives,contributing to the development of best practices, sharing knowledge, and staying updated withthe latest Frontend technologies and trends.● Quality Assurance: Work in tandem with QA engineers to define comprehensive test cases,support both automated and manual testing processes, and ensure that releases meet thehighest quality standards before deployment.● Code Reviews: Lead and participate in code review sessions to uphold high code quality. Shareknowledge, provide and incorporate constructive feedback, and help improve overall codebasehealth and architecture● Continuous Integration and Deployment: Work with CI/CD tools to automate testing anddeployment processes, ensuring that changes are released efficiently to the productionenvironment with minimal downtime.● Scrum Participation: Take a proactive role in leading daily stand-ups, sprint planning, sprintgrooming, and retrospective meetings. Utilize these activities to monitor progress, anticipatechallenges, and drive improvements in the development process and team efficiency.● Documentation: Oversee and produce comprehensive documentation for developmentprocesses, architectural designs, and code changes. Ensure documentation is detailed andaccessible to support current team operations and facilitate future project maintenance andonboarding..Your expertise:● 6+ years of professional experience in Software Engineering, with a focus on Frontenddevelopment.● Framework Knowledge: Familiarity with major Javascript frameworks; experience with React JSis preferred.● Solid understanding of modern JavaScript features, including ES2023 updates, asynchronousprogramming, and concurrent rendering concepts for building efficient and scalable applications.● Experience in Software Development, Design, and Architecture, with security in mind● Good practical knowledge of OOP concepts and SOLID principles● Experience with Agile practices: Pairing, TDD, Continuous Integration, Continuous Delivery● Expertise in optimizing web performance and Web Vitals (e.g., Core Web Vitals) to ensure fastload times and smooth user experiences, including metrics like Time to First Byte (TTFB), Timeto Interactive (TTI), and First Contentful Paint (FCP).● Experience in web application design and state management solutions● Experience with Unit and Integration testing● Understanding common security vulnerabilities and performance issues in web applications, andknowing how to debug them● Strong customer focus, you build accessible applications with a great UX● Knowledge of web accessibility standards and best practices to create inclusive and accessibleweb applications● Superb communication skills, and ability to interact effectively with multidisciplinary teams.● Next.js 15 and its latest features, such as improved server components, streaming, andadvanced static site generation, is a plus.

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