Our technology department is seeking a Senior Full Stack Developer (JS) who combines extensive web engineering experience with applied AI knowledge. You will help transform complex requirements into dependable digital experiences for a broad audience. The team values technical curiosity, collaborative delivery, and a high standard of software craftsmanship. In this position, you will have meaningful input into platform evolution and end-to-end product development

Responsibilities

- Own the architecture and production release of web applications that unite JavaScript ecosystems with intelligent automation features
- Partner with product stakeholders, user experience specialists, and analysts to turn business needs into clear implementation plans
- Refine client applications and service layers to increase speed, stability, and overall user satisfaction
- Operationalize neural models and AI-powered tools within live environments while maintaining robust security controls
- Produce readable, extensible code and supporting documentation that align with recognized development principles
- Establish thorough quality assurance practices covering isolated components, connected services, and complete user workflows
- Operate build tooling, CI pipelines, and automated routines to make software delivery more efficient
- Help less experienced developers advance through thoughtful feedback, peer reviews, and technical mentoring
- Troubleshoot difficult operational failures across the application stack and supporting infrastructure
- Participate in long-term technical strategy discussions and help strengthen engineering practices across the business

Requirements

- A minimum of three years in commercial software development roles with progressively greater technical responsibility
- Broad command of full stack architecture, from user-facing presentation layers to resilient backend platforms




- Strong theoretical and practical understanding of AI concepts, algorithm integration, and intelligent feature design
- Expertise in JavaScript for high-performance interactive applications and event-driven asynchronous workflows
- Demonstrated React experience developing modular interfaces and managing sophisticated client-side behavior
- Solid Node.js background in building scalable APIs, distributed services, and microservice-based systems
- Practical Python skills for data transformation, AI platform integration, or creation of backend utilities
- Previous exposure to Java when connecting enterprise applications and implementing dependable service frameworks
- Understanding of Go for high-concurrency server development and lightweight technical tools
- Hands-on use of Testify to build reliable test cases and verification checks
- Ability to configure Webpack for module packaging, code splitting, and frontend performance improvements
- Experience leveraging Jest to execute JavaScript test suites and snapshot checks
- Familiarity with Karma for conducting browser-compatible automated testing
- Knowledge of Mocha for structuring adaptable asynchronous test scenarios and assertions
- Experience using Gulp for build automation, asset compression, and recurring development scripts
- Awareness of Grunt for supporting older build pipelines and task-runner setups
- Professional written and verbal English at B2 proficiency or higher for international collaboration

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
- General career opportunities
- Volunteer and community involvement opportunities
- EPAM Employee Groups
- Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn

📌 Senior Full Stack Developer (JS) (Argentina)
🏢 EPAM Systems
📍 Argentina