Senior JavaScript Full-Stack Developer

EPAM Systems; Argentina; On-site; ARS 121,269,000 - 181,904,000; Full time

Benefits offered by this job

International projects

Healthcare benefits

Paid time off and sick leave

Upskilling and certification courses

Global career opportunities

Volunteer opportunities

Award-winning culture

Job summary

EPAM Systems is seeking a Senior JavaScript Full-Stack Developer with AWS experience to join our team in building scalable production systems. You will contribute across the stack, shaping frontend and backend while aligning on architectural direction.

Responsibilities include designing full-stack apps, building accessible UIs with TypeScript/React, implementing services on the JVM or shared TS platforms, and deploying on AWS with CI/CD.

Qualifications

• 3+ years of professional full-stack web engineering experience shipping production systems.
• Proficiency in TypeScript and React with performance optimization and accessibility in mind.
• Backend experience in Kotlin or Java on the JVM.
• Experience with gRPC, protobuf, and HTTP/REST API development.
• Competency in DynamoDB and PostgreSQL data modeling, with Redis familiarity.
• Understanding of caching, queues, and eventual-consistency trade-offs.
• Hands-on AWS, containers, and CI/CD as part of development.
• Strong testing discipline across unit, integration, and end-to-end levels.
• English proficiency at B2 or higher.

Responsibilities

• Design, develop, and ship production-ready full-stack web applications.
• Build accessible, performant UIs using TypeScript and modern frameworks.
• Implement and maintain backend services on JVM or shared TypeScript platforms.
• Design and evolve data models across relational and NoSQL databases.
• Develop and integrate APIs using gRPC, protobuf, HTTP, and REST.
• Deploy and operate applications on AWS with containers and CI/CD pipelines.
• Apply caching and queuing strategies for scalability and reliability.
• Maintain strong testing across unit, integration, and end-to-end layers.
• Collaborate with cross-functional teams to define technical direction.

Skills

TypeScript

React

AWS

REST APIs

CI/CD

Unit testing

English (B2+)

Tools

DynamoDB

PostgreSQL

Redis

Kubernetes

CI/CD tooling

Job description

We are looking for a Senior JavaScript Full-Stack Developer with AWS experience to join our team and help build scalable, high-performance production systems. In this role, you will contribute across the stack, shaping both frontend experiences and backend services while collaborating on architectural decisions that support our evolving platform.

Responsibilities

• Design, develop, and ship production-ready full-stack web applications
• Build accessible, performant user interfaces using TypeScript and modern component frameworks
• Implement and maintain backend services on the JVM or with shared TypeScript platform libraries
• Design and evolve data models across relational and NoSQL databases for product features
• Develop and integrate APIs using gRPC, protobuf, HTTP, and REST
• Deploy and operate applications on AWS using containers and CI/CD pipelines
• Apply caching, queuing, and eventual-consistency strategies to ensure scalability and reliability
• Maintain strong testing discipline across unit, integration, and end-to-end layers
• Collaborate with cross-functional teams to define technical direction and platform standards

Requirements

• 3+ years of professional full-stack web engineering experience shipping production systems
• Proficiency in TypeScript and React, including state management, accessible UI patterns, and browser performance optimization
• Backend expertise in Kotlin or Java on the JVM
• Skills in gRPC, protobuf, and HTTP/REST API development
• Competency in DynamoDB and PostgreSQL for product-feature data modeling, with familiarity with Redis
• Understanding of caching, queues, and eventual-consistency trade-offs
• Capability to work effectively with AWS, containers, and CI/CD as a consumer
• Strong testing discipline across unit, integration, and end-to-end layers
• English proficiency at an Upper-Intermediate level (B2) or higher

Nice to have

• Familiarity with a cross-platform mobile framework such as React Native, Kotlin Multiplatform, Flutter, or Capacitor
• Background in authentication and identity systems, including OAuth/OIDC, SSO, and third-party providers
• Experience with authoring tools, CMSes, or internal back-office applications
• Knowledge of OpenTelemetry, structured logging (SigNoz), and design systems with shared component libraries
• Exposure to EdTech / K-12 or other domains with strong privacy and accessibility requirements (FERPA, COPPA, WCAG)

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