Lead Frontend Engineer

EPAM Systems; United States; On-site; USD 150,000 - 190,000; Full time

Job summary

EPAM Systems in the United States is seeking a Lead Frontend Engineer to design, scale, and ensure the technical excellence of enterprise web applications within a growing AdTech platform.

You will lead frontend architecture, collaborate with product, UX, and engineering, and own performance, accessibility, and data-driven dashboards across advertising workflows.

Qualifications

• 8+ years of software engineering with focus on frontend development.
• Hands-on experience with modern JavaScript (ES6+) and React.
• Strong HTML5, CSS3 and modern styling methodologies.
• Experience building data-intensive web apps and dashboards.
• Bachelor's degree in CS, Engineering, or related field.

Responsibilities

• Lead end-to-end frontend development, architecture, and execution for AdTech platforms, campaigns, and analytical applications.
• Design, build, and maintain scalable, reusable components and robust frontend architectures using React and JavaScript.
• Validate and deliver intuitive user interfaces for core AdTech capabilities, including dashboards, targeting tools, and reporting applications.
• Optimize application performance, accessibility, and usability across devices.
• Perform API integrations, testing support across frontend systems and external services.
• Verify user workflows, data visualization, real-time analytics, and platform reliability.
• Collaborate with business, product, design, and engineering teams to support high-quality deliverables.

Skills

Frontend development

React

JavaScript

UI/UX collaboration

Performance optimization

Data visualization

API integration

Web accessibility

Education

Bachelor's degree in Computer Science or related field

Tools

React (Hooks)

Webpack

Vite

npm/yarn

CI/CD

RESTful APIs

Job description

The Lead Frontend Engineer is responsible for designing, scaling, and ensuring the technical excellence of modern user-facing applications within a growing AdTech platform. This role partners with product managers, UX/UI designers, marketing, and engineering teams to build high-performance web applications focused on digital advertising capabilities. The ideal candidate has strong expertise in frontend technologies, modern web architectures, and user experience optimization, with a deep understanding of data-intensive dashboards, component design, and API integrations. This position plays a key role in delivering intuitive, responsive, and enterprise-grade solutions across advertising, media, and publishing workflows.

Responsibilities

• Lead end-to-end frontend development, architecture, and execution for AdTech platforms, campaigns, and analytical applications
• Design, build, and maintain scalable, reusable components and robust frontend architectures using React and JavaScript
• Validate and deliver intuitive user interfaces for core AdTech capabilities, including campaign management dashboards, audience targeting and personalization tools, and reporting applications
• Optimize application performance, responsiveness, accessibility (a11y), and usability across devices and environments
• Perform API integrations, functional, regression, and end-to-end testing support across frontend systems and external services
• Verify user workflows, data visualization, real-time analytics, and platform reliability while managing defects through resolution and root cause analysis
• Collaborate with business, product, design, and engineering teams to support high-quality deliverables, ensure seamless user experiences, and drive successful cross-functional execution

Requirements

• 8+ years of software engineering experience, including strong, demonstrable expertise focused on modern frontend development and web applications
• Hands-on experience with modern JavaScript (ES6+) and React (Hooks, advanced state management, and component architecture)
• Strong knowledge of web fundamentals and styling, including HTML5, CSS3, and modern styling methodologies
• Proven experience building complex, data-intensive web applications, data grids, or analytical dashboards
• Solid understanding of frontend tooling, development workflows, and deployment processes, including Webpack, Vite, npm/yarn, and CI/CD pipelines
• Familiarity with API testing and integration between frontend applications and RESTful services
• Knowledge of frontend performance optimization, debugging, error tracking, and monitoring techniques
• Exposure to cloud-hosted applications and distributed systems from a frontend perspective
• Nice to have: Experience working in AdTech, Digital Advertising, or Media & Publishing domains, alongside hands-on integration experience with advertising technology platforms such as Google Ad Manager or Koddi
• Experience building high-scale enterprise web applications with React, supported by knowledge of frontend observability tools and a Bachelor's degree in Computer Science, Engineering, or a related field