Remote Java Fullstack Engineer | Spring Boot & Cloud

Bairesdev; Ciudad de Mendoza; Remote; ARS 1,200,000 - 2,400,000; Full time

Job summary

Bairesdev is seeking a Full Stack Engineer to join our Cloud Platform Engineering Team. You will build and scale end-to-end web applications, connecting modern UIs with robust backend services, and ensure secure authentication workflows.

You will design and optimize PostgreSQL schemas, build and consume REST APIs, and containerize services as OCI images. You will integrate OIDC/OAuth2 with Keycloak for frontend and backend security, secure API endpoints with JWTs, and implement testing within

Qualifications

• 3+ years of professional software development experience.
• Strong experience with React and PostgreSQL.
• Experience designing and consuming REST APIs.
• Experience with Keycloak and OAuth2/OIDC authentication.
• Familiarity with JWT, token storage and modern web auth practices.
• Understanding of CORS and stateless session management.
• Experience with containerized applications and CI/CD workflows.
• Experience with automated testing and GitHub Actions.

Responsibilities

• Build and scale end-to-end web applications with robust frontend and backend integration.
• Design, optimize, and query PostgreSQL schemas for performance and scalability.
• Develop and secure REST APIs and token-based authentication flows.
• Integrate OIDC/OAuth2 using Keycloak for frontend and services.
• Implement secure API endpoints with JWT verification and scope validation.
• Write unit, integration, and contract tests and automate them in CI/CD pipelines.
• Collaborate with the team to deliver reliable, scalable cloud apps.

Skills

React

PostgreSQL

REST APIs

Keycloak

OIDC/OAuth2

JWT

Web security

CI/CD

GitHub Actions

Containerization

Tools

Docker

GitHub Actions

Job description

The Role:

We are looking for a Full Stack Engineer to join our Cloud Platform Engineering Team.

In this role, you will be responsible for building and scaling end-to-end web applications, connecting modern and responsive user interfaces with robust backend services, database architecture, and secure authentication workflows.

Design, optimize, and query PostgreSQL database schemas with a strong focus on performance and scalability.

Build and consume RESTful APIs, packaging application logic as stateless OCI container images.

Integrate OIDC/OAuth 2.0 authorization code flows into React frontends and backend services using Keycloak.

Secure API endpoints through JWT verification, token exchange policies, and scope validation.

Implement modern web security practices, including appropriate token storage, CORS, and stateless session management.

Write and maintain unit, integration, and contract tests.

Integrate automated testing into GitHub Actions, ensuring tests are executed on every pull request.

Collaborate with the engineering team to build reliable, maintainable, and scalable cloud-based applications.

Requirements:

• 3+ years of professional software development experience, with strong hands-on experience in:


• React


• Relational databases, particularly PostgreSQL


• Experience designing and consuming REST APIs.


• Direct experience with Keycloak, including client libraries such as keycloak-js.


• Solid understanding of OIDC, OAuth 2.0, JWT, and modern web authentication and authorization practices.


• Understanding of token storage best practices, CORS, and stateless session management.


• Experience working with containerized applications and workflows.


• Experience with automated CI/CD environments, preferably GitHub Actions.


• Strong understanding of software engineering best practices and the ability to build secure, scalable, and maintainable applications.

Core Tech Stack