Senior Full-Stack Engineer, Cloud Platform & Security

Open Technology Group; Ciudad de Mendoza; On-site; ARS 1,000,000 - 2,000,000; Full time

Job summary

Open Technology Group is seeking a Full Stack Engineer to join the Cloud Platform Engineering Team in Mendoza, Argentina. You will build and scale end-to-end web applications, connecting modern UIs with robust backend services and databases, while ensuring secure authentication workflows and scalable architecture.

You will design PostgreSQL schemas for performance, build RESTful APIs, containerize applications, and implement OIDC/OAuth 2.0 with Keycloak across frontend and backend services.

Qualifications

• 3+ years of professional software development experience.
• Experience in building end-to-end web applications.
• Strong database design and query skills.
• Experience with authentication and authorization workflows.

Responsibilities

• Build and scale end-to-end web applications with frontend React and backend services.
• Design and optimize PostgreSQL schemas for performance and scalability.
• Create and consume RESTful APIs and containerize applications.
• Implement OIDC/OAuth flows using Keycloak in frontends and services.
• Secure API endpoints with JWT, token exchange and scope validation.
• Follow modern web security practices and token storage guidelines.
• Write unit, integration and contract tests; integrate tests into GitHub Actions.
• Collaborate with the engineering team to deliver reliable, scalable cloud-based apps.

Skills

React

PostgreSQL

REST APIs

Keycloak

OIDC

JWT

CORS

Containerized apps

CI/CD

GitHub Actions

Job description

Open Technology Group is seeking a Full Stack Engineer to join the Cloud Platform Engineering Team in Mendoza, Argentina. You will build and scale end-to-end web applications, connecting modern UIs with robust backend services and databases, while ensuring secure authentication workflows and scalable architecture.

You will design PostgreSQL schemas for performance, build RESTful APIs, containerize applications, and implement OIDC/OAuth 2.0 with Keycloak across frontend and backend services.