Senior React/Typescript Fullstack Engineer - Ai Fintech

Bluelight; Ciudad de Mendoza; Presencial; ARS 1.000.000 - 2.400.000; Tempo integral

Resumo da vaga

Bluelight 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 React frontends with robust backend services, databases, and secure authentication workflows.

You will design PostgreSQL schemas for performance, implement REST APIs, containerize with OCI images, integrate Keycloak for OIDC/OAuth, enforce secure token handling and CORS, and write unit and integration tests.

Qualificações

• 3+ years of professional software development experience in web applications.
• Strong hands-on experience with React.
• Relational databases, particularly PostgreSQL.
• Experience designing and consuming REST APIs.
• Direct experience with Keycloak, including 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.

Responsabilidades

• Build and scale end-to-end web applications with React frontends and backend services.
• Design, optimize, and query PostgreSQL database schemas for performance and scalability.
• Build and consume RESTful APIs and containerize logic as stateless OCI images.
• Integrate OIDC/OAuth 2.0 flows into frontends and services using Keycloak.
• Secure API endpoints with JWT verification and proper access controls.
• Implement modern web security practices including token storage and CORS.
• Write and maintain unit, integration, and contract tests.
• Integrate automated testing into GitHub Actions and run tests on PRs.
• Collaborate with the engineering team to build reliable, scalable cloud-based applications.

Conhecimentos

React

PostgreSQL

REST APIs

Keycloak

OIDC/OAuth 2.0

JWT

CI/CD

GitHub Actions

Containers

Cloud Platform

Ferramentas

OCI containers

Descrição da vaga

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