Software Engineer Platform / Integration Backend Net or Python

L3 Software Engineer Platform
We are looking for a Software Engineer with strong backend development skills in .NET or Python and hands-on experience integrating authentication and authorization systems.
In this role, you will build and maintain backend services, develop RESTful APIs, and integrate federated identity solutions within secure, multi-tenant SaaS environments.
Key Responsibilities
Develop and maintain backend services and RESTful APIs using .NET or Python.
Implement and integrate federated identity solutions using OAuth 2.0, OpenID Connect (OIDC), SAML 2.0, and JWT.
Design and implement authorization policies and claims-based access controls.
Support identity integrations across multi-tenant SaaS applications.
Work with cloud infrastructure and managed services, preferably on AWS.
Contribute to CI/CD pipelines, automated testing, and containerized application development.
Leverage AI-assisted development tools to improve productivity and code quality.
Professional Experience
3–5 years of professional software engineering experience. Proficiency in .NET or Python.
Familiarity with modern frameworks such as .NET 9+ or FastAPI.
Hands-on experience building backend services and RESTful APIs.
Proven ability to independently develop and deliver production-ready features.
Production experience with one or more of the following: OAuth 2.0, OIDC, SAML 2.0, and JWT.
Understanding of authorization frameworks, token introspection, claims-based access, assertion handling, and SSO logout flows.
Experience with multi-tenant SaaS integration patterns and tenant-scoped configuration.
Familiarity with AWS or other cloud platforms, including networking, compute, and secrets management.
Experience with Git, CI/CD, Docker, and automated testing.
Active, daily use of AI-assisted development tools such as GitHub Copilot, Claude, or equivalent.
English Proficiency: Advanced (C1)
📌Location: Remote 100% if you are located on Mexico, Argentina or Brazil
📌US Client
📌USD Payment, Invoice USA
📌Long-term contract
👉 If you meet the requirements and are interested in this opportunity, apply now.

Work arrangement
Yes