Senior Full-Stack Software Developer (Java+React)Argentina, Buenos AiresSoftware Engineering, Rea...

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 looking for a Senior Full-Stack Software Developer (Java+React) in Argentina

Working hours 10:00 AM – 6:00/7:00 PM ART

ABOUT PROJECT

The client is among the top-5 health insurance companies in the US. They are dedicated to expanding access to high-quality, cost-effective health care and equipping their members with information and tools so they can make the best health care decisions for themselves and their families.

REQUIREMENTS

• 5+ years of professional experience in Java backend development
• Strong proficiency in Java with hands‑on experience in Spring Boot 3.x
• Solid experience designing and building REST APIs consumed by multiple downstream systems
• Solid understanding of REST API design, authentication, authorization, and web security principles
• Hands‑on experience with Databricks for data processing and data engineering workflows
• Working frontend development skills — React, TypeScript, CSS; ability to contribute to UI features alongside backend work
• Experience with ARO (Azure Red Hat OpenShift) or equivalent container orchestration platforms
• Proficiency in CI/CD tooling — Jenkins
• Proficiency in Git including branching workflows, code reviews, and pull requests
• Hands‑on experience with GitHub Copilot or other AI-based coding assistants
• Hands‑on experience with developer tooling: IntelliJ IDEA, VS Code, Git, Chrome Developer Tools
• Solid communication and collaboration skills with ability to engage both technical and non-technical stakeholders

NICE TO HAVE

• Experience in the healthcare domain or regulated industry environments
• Deeper frontend experience with Redux, Webpack, and Microfrontend (MFE) architecture
• Familiarity with MuleSoft or API integration platforms
• Experience with containerization (Docker, Kubernetes) and cloud platforms (AWS, Azure, GCP)
• Understanding of DevSecOps practices and GitOps workflows
• Knowledge of code quality scanning tools such as SonarQube
• Working knowledge of Dynatrace for monitoring and observability
• Basic experience with NGINX and PCF/OpenShift UCD (UrbanCode Deploy), Insomnia
• Experience working in agile delivery teams — comfortable with estimation, sprint planning, and Jira

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

WHAT YOU WILL GET WITH ELEKS

• Close cooperation with a customer
• Challenging tasks
• Competence development
• Ability to influence project technologies
• Team of professionals
• Dynamic environment with low level of bureaucracy

ABOUT

ELEKS is a custom software development company. We deliver value to our clients, thanks to our expertise and experience gained from working as a software innovation partner since 1991.

Our 2000+ professionals located in the Delivery Centers across Eastern Europe and sales offices in Europe and North America, provide our clients with a full range of software engineering services. These include product development, QA, R&D, design, technology consulting and dedicated teams.

Benefits

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