Senior JavaScript Full-Stack Developer

EPAM Systems; Argentina; Remote; ARS 2,400,000 - 3,600,000; Full time

Benefits offered by this job

Healthcare benefits

Paid time off

Upskilling programs

LinkedIn Learning access

Global career opportunities

Job summary

EPAM Systems is seeking an experienced Senior JavaScript Full-Stack Developer to build and evolve production web systems. You will deliver accessible, high-performance UIs and reliable JVM- and TypeScript-based services on cloud infrastructure.

Responsibilities include designing full-stack solutions, building TypeScript/React features, backend services in Java/Kotlin, gRPC, data modeling in DynamoDB and PostgreSQL, and AWS CI/CD workflows. Collaboration across teams is essential.

Qualifications

• 3+ years of full-stack web engineering experience shipping production systems.
• Proficiency in TypeScript and React, including state management.
• Deep knowledge of UI accessibility patterns and browser performance optimization.
• Solid backend skills in Java or Kotlin on the JVM, or TypeScript for shared libraries.
• Extensive experience with gRPC + protobuf, HTTP, and REST.
• Hands-on data modeling experience with DynamoDB and PostgreSQL.
• Practical cloud platform experience using AWS, containers, and CI/CD as a consumer.
• Rigorous testing discipline across unit, integration, and end-to-end tests.
• Excellent collaboration and communication skills across teams.

Responsibilities

• Design full-stack solutions that meet product needs with clear trade-offs and scalable patterns.
• Build TypeScript and React features with accessible UI patterns and strong client performance.
• Develop backend services and shared libraries using Java or Kotlin on the JVM and TypeScript where appropriate.
• Implement service-to-service communication using gRPC/protobuf and integrate HTTP/REST APIs.
• Model and evolve data in DynamoDB and PostgreSQL to support product features and reliability.
• Operate effectively within AWS environments, containers, and CI/CD pipelines to ship safely.
• Write and maintain unit, integration, and end-to-end tests to protect quality and delivery speed.
• Coordinate cross-team technical decisions and drive design reviews to align implementations.
• Improve observability and debuggability through structured logging and tracing practices.
• Document architecture, interfaces, and operational guidance to support long-term ownership.

Skills

TypeScript

React

UI accessibility

Java or Kotlin on JVM

gRPC + protobuf

DynamoDB

PostgreSQL

AWS

CI/CD

Testing (unit/integration/e2e)

Tools

gRPC

protobuf

AWS

Docker

Kubernetes

Job description

We are seeking an experienced Senior JavaScript Full-Stack Developer to build and evolve production web systems. You will deliver accessible, high-performance UIs and reliable JVM- and TypeScript-based services on cloud infrastructure. Apply to help shape and ship key platform capabilities!ResponsibilitiesDesign full-stack solutions that meet product needs with clear trade-offs and scalable patternsBuild TypeScript and React features with accessible UI patterns and strong client performanceDevelop backend services and shared libraries using Java or Kotlin on the JVM and TypeScript where appropriateImplement service-to-service communication using gRPC/protobuf and integrate HTTP/REST APIsModel and evolve data in DynamoDB and PostgreSQL to support product features and reliabilityOperate effectively within AWS environments, containers, and CI/CD pipelines to ship safelyWrite and maintain unit, integration, and end-to-end tests to protect quality and delivery speedCoordinate cross-team technical decisions and drive design reviews to align implementationsImprove observability and debuggability through structured logging and tracing practicesDocument architecture, interfaces, and operational guidance to support long-term ownershipRequirements3+ years of full-stack web engineering experience shipping production systemsProficiency in TypeScript and React, including state managementDeep knowledge of UI accessibility patterns and browser performance optimizationSolid backend skills in Java or Kotlin on the JVM, or TypeScript for shared librariesExtensive experience with gRPC + protobuf, HTTP, and RESTHands-on data modeling experience with DynamoDB and PostgreSQLPractical cloud platform experience using AWS, containers, and CI/CD as a consumerRigorous testing discipline across unit, integration, and end-to-end testsExcellent collaboration and communication skills across teamsClear technical writing skills for designs and operational runbooksUpper-Intermediate English proficiency (B2)Nice to haveCross-platform mobile framework experience such as React Native, Kotlin Multiplatform, Flutter, or CapacitorAuthentication and identity systems knowledge, including OAuth, OIDC, SSO, and third-party providersExperience with OpenTelemetry and structured logging toolingExperience building design systems and shared component librariesFamiliarity with authoring tools, CMSes, or internal back-office applicationsWe offerInternational projects with top brandsWork with global teams of highly skilled, diverse peersHealthcare benefitsEmployee financial programsPaid time off and sick leaveUpskilling, reskilling and certification coursesUnlimited access to the LinkedIn Learning library and 22,000+ coursesGlobal career opportunitiesVolunteer and community involvement opportunitiesEPAM Employee GroupsAward-winning culture recognized by Glassdoor, Newsweek and LinkedIn