Lead Front-End Developer (React)

EPAM Systems; Argentina; On-site; ARS 1,800,000 - 3,000,000; Full time

Benefits offered by this job

Healthcare benefits

Paid time off and sick leave

Upskilling and certification courses

LinkedIn Learning access

Job summary

EPAM Systems seeks a Lead Front-End Developer with deep React expertise to craft responsive, accessible web experiences and define engineering standards. You will guide teammates and embed GenAI into daily delivery to boost speed and quality.

You will collaborate with product, design, backend engineers, and QA to deliver cohesive interfaces, convert UI/UX wireframes into high-quality React code, and drive frontend architecture and testing practices across projects.

Qualifications

• 5+ years of front-end development with JavaScript and React.
• Proven leadership in mentoring developers and guiding teams (1+ years).
• Experience designing reusable UI architectures and scalable component libraries.
• Strong code-review skills with constructive feedback and quality standards.

Responsibilities

• Build responsive, accessible web apps with high standards.
• Create reusable frontend libraries to boost scalability and maintainability.
• Drive UI implementation decisions, performance, and long-term code health.
• Collaborate with product, design, backend, and QA for cohesive interfaces.
• Convert UI/UX designs into high-quality React and JavaScript code.
• Guide junior developers on best practices and coding standards.
• Lead code reviews to raise quality, consistency, and team learning.
• Tune app performance for fast loads and smooth interactions.
• Troubleshoot complex issues across browsers and devices.
• Apply unit and end-to-end testing to reduce regressions and increase reliability.
• Work with QA to identify, prioritize, and resolve defects before releases.
• Embed GenAI tools in daily workflows and validate outputs.
• Advance frontend practices and GenAI-enabled delivery methods.

Skills

React

JavaScript

Mentoring

UI architecture

Code reviews

Performance optimization

Testing (unit & E2E)

GenAI integration

Prompt engineering

English (B2+)

Job description

We are seeking a Lead Front-End Developer with deep React expertise to craft responsive, accessible web experiences while defining engineering standards and guiding teammates. You will collaborate with cross-functional peers and integrate GenAI into daily delivery to boost speed and quality. Apply to help create meaningful impact!

Responsibilities

• Build responsive, user-friendly web applications with high accessibility standards
• Create reusable frontend libraries and frameworks to boost scalability and maintainability
• Drive technical decisions for UI implementation, performance, and long-term code health
• Partner with product managers, designers, and backend engineers to deliver cohesive interfaces
• Convert UI/UX wireframes into high-quality React and JavaScript code and share design feedback
• Guide junior developers on best practices, coding standards, and career growth
• Run code reviews to raise quality, consistency, and team learning
• Tune application performance to ensure fast load times and smooth interactions
• Troubleshoot complex issues and ensure cross-browser and cross-device stability
• Apply unit and end-to-end testing to reduce regressions and increase reliability
• Work with QA to identify, prioritize, and resolve defects before releases
• Embed GenAI tools in daily workflows and validate outputs against data and quality constraints
• Advance continuous improvement by assessing new frontend practices and GenAI-enabled delivery methods

Requirements

• 5+ years of front-end development background in JavaScript and React
• Proven leadership skills in mentoring developers and driving team alignment (1+ years)
• Hands-on expertise in designing reusable UI architectures and scalable component libraries
• Strong competency in code reviews with clear, constructive feedback and quality standards
• Solid proficiency in project execution across product, design, backend engineering, and QA
• Strong skills in performance optimization for fast load times and smooth interactions
• Hands-on qualifications in testing, including unit testing and end-to-end testing practices
• Strong capability to debug across browsers and devices with a stability-first mindset
• Applied skills in Generative AI, using GenAI tools for research, drafting, analysis, and code generation
• Strong expertise in prompt engineering for iterative, production-grade outputs
• Practical understanding of AI risks, covering hallucinations, context limits, and data sensitivity validation
• Proficiency in English at a B2+ level

Nice to have

• Knowledge of AI security fundamentals, including prompt injection risks and data classification handling
• Familiarity with Cybersecurity & Trust practices relevant to secure frontend delivery
• Background in GenAI application development, connecting GenAI tools to APIs and internal data sources
• Showcase of GenAI in SDLC, building reusable prompts, agent workflows, or automation templates

We offer

• International projects with top brands
• Work with global teams of highly skilled, diverse peers
• Healthcare benefits
• Employee financial programs
• Paid time off and sick leave
• Upskilling, reskilling and certification courses
• Unlimited access to the LinkedIn Learning library and 22,000+ courses
• Global career opportunities
• Volunteer and community involvement opportunities
• EPAM Employee Groups
• Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn