Join a global engineering team building an enterprise-grade digital advertising platform used by millions. You will design scalable React frontends, integrate REST APIs, and drive the expansion of a high-performance AdTech solution that transforms how brands connect with audiences worldwide. Join EPAM to engineer solutions that matter. From AI to cloud transformation, you'll collaborate with top-tier innovators, gain autonomy to explore your ideas, and grow your skills in a culture built for tech excellence. Req# [redacted] Responsibilities Design and build scalable, high-performance frontend applications using React and JavaScript, delivering intuitive interfaces for campaign management, targeting, and analytics dashboards Develop and optimize responsive UI components that ensure exceptional user experiences across advertising platform views and reporting interfaces Integrate frontend applications with REST APIs built in Java, .NET, or Node.js, and contribute to API design to ensure efficient frontend-backend interaction Collaborate with Product, Design, and Marketing teams to translate business requirements into polished, high-quality user-facing features at pace Participate in system design discussions, code reviews, and CI/CD processes to help scale the AdTech platform from MVP to enterprise-grade solution Support integrations with major advertising ecosystems, troubleshoot production issues, and drive continuous improvements to performance and platform stability Requirements 6 to 8 years of software engineering experience with a strong emphasis on frontend development using JavaScript ES6+ and React, including hooks, state management, and component architecture Proven track record building complex, data-driven UI applications using modern frontend tooling such as Webpack, Vite, and CI/CD pipelines Hands-on experience integrating and designing REST APIs alongside working knowledge of backend technologies including Java, .NET, or Node.js Experience with cloud-based applications and Agile development environments, with solid understanding of CI/CD, DevOps practices, and application resiliency Strong problem-solving skills with the ability to collaborate effectively in fast-paced, distributed engineering teams across multiple time zones Background in AdTech, digital advertising, or media and publishing domains, with experience integrating advertising platforms such as Google Ad Manager or similar ecosystems would be nice-to-have