Senior Java+React Full-Stack Engineer

Eleks; Buenos Aires; On-site; ARS 2,000,000 - 4,000,000; Full time

Job summary

ELEKS is seeking a Senior Full-Stack Software Developer (Java+React) in Argentina to join our delivery team. You will design, develop, and ship robust backend services with Java/Spring Boot and build modern UI components with React and TypeScript.

You'll work closely with product, QA, and design teams, contribute to API architecture, implement security best practices, and participate in CI/CD with Jenkins. Excellent collaboration and problem-solving skills are essential.

Qualifications

• 5+ years of professional Java backend experience.
• Proficient in Java with Spring Boot 3.x.
• Experience designing REST APIs used by multiple systems.
• Strong understanding of REST, auth, and web security.
• Hands-on Databricks for data processing/workflows.
• Full-stack capabilities: React, TS, CSS for UI features.

Responsibilities

• Develop backend functionality for the enterprise time-tracking platform.
• Implement new features, enhancements, and integrations.
• Optimize data processing, API performance, and backend logic.
• Participate in refinement, planning, and technical discussions.
• Collaborate with PM, Designers, QAs, and senior developers.
• Investigate and troubleshoot production issues when needed.
• Ensure code quality following engineering best practices.
• Contribute to architectural decisions and propose improvements.

Skills

Java backend

Spring Boot 3.x

REST APIs

Web security

Databricks

React

TypeScript

CI/CD (Jenkins)

Git

GitHub Copilot

IDEA/VS Code

Chrome DevTools

Communication

Tools

IntelliJ IDEA

VS Code

Git

Chrome Developer Tools

Job description

ELEKS is seeking a Senior Full-Stack Software Developer (Java+React) in Argentina to join our delivery team. You will design, develop, and ship robust backend services with Java/Spring Boot and build modern UI components with React and TypeScript.

You'll work closely with product, QA, and design teams, contribute to API architecture, implement security best practices, and participate in CI/CD with Jenkins. Excellent collaboration and problem-solving skills are essential.