Python & Network (Porto, +9 anos)

We are looking for a Senior Python Developer with strong Network Security expertise to join our Network Security Development team.

You will help accelerate the development of a self-service platform for firewall flow management, automating the complete lifecycle of firewall requests, from validation and approval to provisioning and rollback.

This role is ideal for a senior professional who combines advanced Python and Django development skills with hands-on knowledge of Fortinet FortiGate, FortiManager, and VMware NSX-T. You will build secure and scalable automation workflows that allow teams to manage network access efficiently while maintaining strict security, compliance, and operational resilience standards.

As a Senior Network Security Automation Engineer, you will:

- Develop a secure self-service platform for managing firewall flow openings.

- Automate the request, validation, approval, provisioning, and rollback of firewall rules.

- Integrate the platform with Fortinet and VMware network security environments.

- Reduce manual intervention while improving delivery speed, traceability, and consistency.

- Ensure that every change is validated against internal security and compliance policies.

- Build resilient automation capable of handling failures without disrupting production traffic.

- Transfer the solution effectively to internal Network Security Operations teams.

Automation Workflow Development

- Design, build, and optimize end-to-end automation workflows using Python and Django.

- Automate the complete lifecycle of firewall flow requests, including:Request submission

- Technical and policy validation

- Firewall rule provisioning

- Execution tracking

- Failure handling and rollback

- Build reusable and maintainable backend services that support scalable network operations.

- Automate repetitive security and infrastructure tasks while maintaining appropriate controls and auditability.

API Development & Integration

- Develop scalable and secure APIs using Django REST Framework or equivalent technologies.

- Build and maintain API connectors for:FortiManager

- FortiOS

- VMware NSX-T Manager

- Automate firewall policies, address objects, network services, and security groups.

- Work with FortiManager JSON-RPC and REST APIs.

- Integrate with the NSX-T Policy API.

- Ensure API integrations are reliable, observable, secure, and resilient to partial failures.

Validation, Recovery & Operational Safety

- Develop pre-change controls covering:Syntax validation

- Policy validation

- Dependency verification

- Design safe rollback and recovery mechanisms.

- Apply idempotency principles to prevent duplicated or inconsistent configurations.

- Ensure failed operations do not cause disruption to production traffic.

- Provide clear execution status, error handling, logging, and audit trails.

Security, Quality & Compliance

- Ensure all generated firewall rules comply with internal security policies and applicable control standards.

- Develop comprehensive unit and integration tests for automation workflows and API connectors.

- Validate security rules before provisioning them in production environments.

- Participate in code reviews and promote secure software development practices.

- Contribute to the identification and remediation of technical and security risks.

- Ensure that automation improves delivery speed without weakening governance or security controls.

- Contribute to the design and improvement of CI/CD pipelines.

- Automate testing, validation, packaging, and deployment processes.

- Apply Infrastructure as Code principles where appropriate.

- Use version control and collaborative development workflows to maintain code quality and traceability.

- Promote coding standards, reusable components, peer reviews, and continuous improvement.

Documentation & Knowledge Transfer

- Produce and maintain clear technical documentation covering:Application architecture

- API contracts

- Security controls

- Operational support processes

- Failure recovery mechanisms

- Support knowledge transfer to internal Network Security Operations teams.

- Provide the guidance required for internal teams to operate, maintain, and evolve the platform autonomously.

What We’re Looking For

Mandatory Requirements

- Senior-level experience in Software Engineering, Backend Development, or Automation Engineering.

- Advanced proficiency in Python 3.

- Strong hands-on experience with Django and preferably Django REST Framework.

- Proven experience developing REST APIs and backend automation services.

- Strong understanding of enterprise Network Security concepts.

- Hands-on experience with Fortinet FortiGate and FortiManager.

- Strong knowledge of VMware NSX-T architecture and security capabilities.

- Experience automating firewall rules and network security configurations through APIs.

- Solid understanding of routing, switching, network zoning, and micro-segmentation.

- Experience developing automated tests and integrating them into software delivery pipelines.

- Strong analytical, troubleshooting, and problem-solving capabilities.

- Ability to work effectively with Software Engineering, Network Security, Infrastructure, and Operations teams.

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