Referso Jobs

Analista Infraestrutura Sênior (Linux, AD e OPNsense/pfSense)

ESSS (Engineering Simulation and Scientific Software) · Posted Nov 9, 2026

Open

São Paulo, São Paulo, Brazil
Hybrid
Full-time · Senior

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Analista Infraestrutura Sênior (Linux, AD e OPNsense/pfSense)

ESSS (Engineering Simulation and Scientific Software) · Posted Nov 9, 2026

Open

São Paulo, São Paulo, Brazil
Hybrid
Full-time · Senior

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Linux Internals Software Engineer

Palo Alto Networks · Posted Sep 6, 2026

Open

Tel Aviv, Tel Aviv, Israel
On-site
Full-time · Intern
5+ years

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Design and develop Linux internals components for Palo Alto Networks’ Cortex XDR endpoint security product.

Responsibilities

Design and implement innovative capabilities for a market-leading product
Develop critical components in the Linux internals parts of the product
Utilize cutting-edge Linux technologies for real-time event collection, anti-malware, anti-exploitation, and network filtering
Lead features by collaborating and coordinating with other development and QA teams
Uphold and contribute to a team culture that values software development best practices and high standards for quality

Requirements

Bachelor's degree
Nice to have: Linux kernel programming
Nice to have: containers
Nice to have: Docker
Nice to have: Kubernetes

Skills

Linux system-level programming Linux internals C++debugging on Linux platforms multi-threaded application development

Senior Staff Security Engineer

ServiceNow · Posted Nov 6, 2026

Open

Toronto, Ontario, Canada
On-site
Full-time · Senior
12+ years

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Senior technical authority for security engineering in the Canada regulated environment, overseeing security controls, automation, and compliance across on‑premises, cloud, and isolated infrastructure.

Responsibilities

Serve as the senior technical authority for security engineering in the Canada regulated environment.
Engineer, harden, and operate security controls across on-premises, cloud, and isolated infrastructure.
Build automation and infrastructure‑as‑code that streamlines security engineering and operations, reporting, and remediation.
Partner with infrastructure, application, and platform owners to drive remediation and track compliance against CIS and NIST baselines.
Support security tooling across identity, vulnerability scanning, logging, and cloud security based on team priorities.

Requirements

Nice to have: CISSP
Nice to have: CCSP
Nice to have: CISM
Nice to have: Tenable Certified Engineer
Nice to have: Cribl Admin

Skills

Linux administration Python Shell Terraform Ansible

Senior Site Reliability Engineer, InfraSec

MongoDB · Posted Nov 6, 2026

Open

Dublin, Leinster, Ireland
Hybrid
Senior
5+ years

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Build and secure infrastructure for MongoDB Atlas across multi‑cloud environments.

Responsibilities

Harden hosts and containerized workloads using Linux security mechanisms
Secure containerized infrastructure across multi‑cloud environments via RBAC, network policies, admission controls and runtime threat detection
Build and manage automated services for Cloud Security Posture Management, workload identity, vulnerability management, and access controls across AWS, Azure, and GCP
Write production‑quality code and leverage Infrastructure‑as‑Code (Terraform) to version, test, and deploy security controls as code
Build real‑time security monitoring, logging, and alerting systems to detect anomalies and track security posture at Atlas scale

Requirements

Nice to have: eBPF-based security tooling
Nice to have: Cloud Security and Workload Identity platforms
Nice to have: Multi‑cloud expertise spanning AWS, Azure, and GCP
Nice to have: Low‑level Linux security mechanisms

Skills

Go Python C C++

Senior Security Engineer, Infrastructure Security Engineering - DGX Cloud

NVIDIA · Posted Nov 4, 2026

Open

Remote, Canada
Remote
Full-time · Senior
CA$170K–CA$275K per year
8+ years

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Architect and build foundational security primitives for massive-scale GPU clusters, designing automated and resilient security systems for omni-cloud and on-premise AI infrastructure.

Compensation

The expected base salary ranges for this position are: 170,000 CAD – 220,000 CAD for Level 4; and 225,000 CAD – 275,000 CAD for Level 5.

Responsibilities

Design, build, and integrate production-grade security services.
Shift security 'left' by developing Infrastructure as Code and Policy as Code to automate security enforcement and compliance.
Architect and implement the security control plane.
Engineer automated guardrails, controllers, and runtime security policies.
Design and operate security services as a scalable platform.

Requirements

Bachelor’s degree in Computer Science
Engineering
or related technical field
Nice to have: HPC/AI Security
Nice to have: RDMA-based networks

Skills

SRE Software Engineering Infrastructure Security Kubernetes Infrastructure as Code

Analista Infraestrutura Sênior (Linux, AD e OPNsense/pfSense)

Analista Infraestrutura Sênior (Linux, AD e OPNsense/pfSense)

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Linux Internals Software Engineer

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Senior Staff Security Engineer

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Skills

Senior Site Reliability Engineer, InfraSec

Responsibilities

Requirements

Skills

Senior Security Engineer, Infrastructure Security Engineering - DGX Cloud

Compensation

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AppArmor jobs

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