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Full-Stack Engineer (Identity & Security Engineer)

1 month, 2 weeks ago
Mexico, Brazil, Colombia, Ghana, United States, Nigeria
Contract
Senior
Full-stack Engineer
Software Development
Azure FastAPI Git JWT OAuth Python React TypeScript
Apply Now
Servant

Servant

Servant is a leading digital agency that serves purpose-driven individuals and organizations aligned with their 'for good' ethos, focusing on creating positive impacts through technology and faith.

Internet Software & Services
11-50
Founded 2021
View All Jobs 2

Description

  • Implement and manage authentication using Clerk across frontend and backend systems.
  • Design role-based access control and permission models aligned with human-led decision workflows.
  • Implement secure session handling, JWT validation, and token lifecycle management.
  • Integrate identity flows with FastAPI backend services and React + TypeScript frontend applications.
  • Enforce consistent authorization across APIs, services, agents, tools, and data access layers.
  • Implement OAuth2, JWT, CORS, CSRF protection, and rate limiting best practices.
  • Harden APIs and identity boundaries for multi-tenant SaaS use cases.
  • Document the identity architecture and transfer knowledge to the team.
  • Design identity and permission models for AI agents, tools, and automated workflows.
  • Implement human-in-the-loop approval gates and policy enforcement for sensitive or high-impact actions.
  • Prevent privilege escalation, cross-tenant access, and unauthorized tool or data usage by agents.
  • Design sandboxing and blast-radius containment strategies for semi-autonomous workflows.

Requirements

  • Hands-on experience implementing authentication and authorization in web applications.
  • Strong experience with Clerk or an equivalent identity provider.
  • Deep understanding of OAuth2, JWT, and session management.
  • Experience with FastAPI backend systems in Python.
  • Frontend integration experience with React and TypeScript.
  • Strong security fundamentals and threat-model awareness.
  • Proficiency with Git and remote collaboration.
  • Experience with Azure deployments and DevOps workflows preferred.
  • Familiarity with Infrastructure-as-Code preferred.
  • Experience implementing RBAC in multi-tenant SaaS platforms preferred.
  • Background securing workflow or decision-support systems preferred.

Benefits

  • Flexible work structure of 20–40 hours per week, depending on role scope and workload.
  • Outcome-driven environment with no hour tracking.
  • Fixed monthly stipend aligned to responsibilities and ownership.
  • Stipend remains consistent as long as commitments are met and performance remains strong.
  • Flexible schedule with trusted time management.
  • Clear expectations for ownership and follow-through.
  • Proactive communication and consistent, high-quality delivery are supported and expected.

Interested in this position?

Apply directly on the company website

Apply Now

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