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Added 12 mins ago
Principal Software Engineer- React Native
AI Interviews
Toronto, ON · Greater Toronto Area, Canada
Full-time
We are seeking a Senior/Lead React Native Engineer with 8+ years of mobile engineering and 5+ years of production React Native experience.Strong expertise in React Native 0.76+, New…
Added 12 mins ago
Senior Software Engineer
Orbis Group
Toronto, ON
$140,000 to $180,000 CAD / year
Full-time
I’m working with a fast-growing financial technology company hiring a Software Engineer to join their backend team in Toronto.
Added 12 mins ago
Agent & DevOps Platform Engineer
Zodiac Solutions, Inc
Toronto, ON
Full-time
3–5+ years of hands-on CI/CD, cloud, and platform engineering experience in enterprise environments
Added 13 mins ago
Senior Infrastructure Engineer
Upstart
Canada
…technology that’s both radically intelligent and deeply human. Our platform runs over one million predictions per borrower using more than 3,000 signals, powering smarter, fairer decisions…
Added 28 mins ago
Senior DevOps Engineer - Digital Platforms
Four Seasons Hotels and Resorts
Toronto, ON · Four Seasons Corporate Headquarters Toronto
Full-time
The Senior DevOps Engineer - Digital Platforms is a senior, hands-on technical role accountable for advancing the reliability, scalability, security, performance, and operational maturity…
Added 42 mins ago
Staff Backend Engineer - Digital Credentials
Okta
Toronto, ON
$160,000 to $220,000 CAD / year
Full-time
To address this massive need, our focus is on building a Verifiable Digital Credentials (VDCs) platform to power this new ecosystem. VDCs are reusable digital records that prove identity,…
Added 42 mins ago
Senior Software Engineer
AspiringIT
Kitchener, ON
Full-time
Aspiring IT Inc. is seeking an experienced Senior Software Engineer to design, develop, integrate, and maintain scalable software applications and cloud-based systems.
Added 1 hour ago
QA Automation Engineer - MTL/TOR
isgSearch
Toronto, ON · Greater Toronto Area, Canada
Full-time
Our client is looking for an experienced QA Automation Engineer to support the continued development and enhancement of business-critical technology applications.
Added 1 hour ago
Lead Azure(Terraform)- Cloud Platform Engineer
TECONICA SOFTWARES
Toronto, ON
Contract
We are seeking a highly hands-on Azure Platform Engineer with strong experience designing, implementing, and supporting enterprise-scale Microsoft Azure cloud platforms.
Added 1 hour ago
Senior Backend Developer
Cruit Group
Toronto, ON
Full-time
…server-side architecture powering a high-traffic media and streaming platform serving millions of active users. This senior individual contributor role is tailored for an engineer capable…
Added 1 hour ago
Software Engineer: Product Quality
Fiscal.ai
Remote, Canada
Full-time · Remote
Fiscal.ai is a leading research and data platform built for capital markets professionals. Combining a high-performance research Terminal with a modern, near-real-time fundamentals API and…
Added 1 hour ago
Staff Data Scientist, Applied ML
Jobber
Remote, Canada
Full-time · Remote
…representation learning, transformer architectures, and ranking, and engineer them to serve reliably in real time and at scale inside Jobber's…
Added 1 hour ago
Senior Data Engineer
Royal Bank of Canada
Vancouver, BC
Full-time
…digital transformation strategy. We're seeking a Senior Data Engineer to architect and build scalable, cloud-native ETL/ELT pipelines that power our enterprise data ecosystem. In this…
Added 1 hour ago
Software Engineer – Messaging & Async Platform Infrastructure
Deel
Canada
Full-time
We are looking for a Software Engineer to join our Infrastructure – Messaging & Async Platform team, focused on building and scaling our messaging and asynchronous communication platform.
Added 1 hour ago
Production Support - Elite Quant Fund- Up to $180,000 CAD + Bonus
Hunter Bond
Montreal, QC
Full-time
My client is hiring a Production Support Engineer to support mission-critical front office trading systems in a fast-paced, high-performance environment where uptime, speed, and reliability…
Added 1 hour ago
Board Verification Engineer
TekWissen ®
Markham, ON
$60 to $66 CAD / hour
Contract
Develop platform validation plans and flows while ensuring end to end coverage
Added 1 hour ago
Software Engineer – Elite Quant - Up to $200,000 CAD Starting base + Exceptional benefits/bonus package Fund
Hunter Bond
Montreal, QC
Full-time
My client - one of the world's leading quantitative trading firms - is hiring a Platform Engineer / Site Reliability Engineer (SRE) to design, build, and maintain highly scalable, resilient…
Added 1 hour ago
Senior Data Engineer
RBC
Vancouver, BC
Full-time
…digital transformation strategy. We're seeking a Senior Data Engineer to architect and build scalable, cloud-native ETL/ELT pipelines that power our enterprise data ecosystem. In this…
Added 1 hour ago
Associate Director - Lead Application Support Specialist, GED Support
RBC
Toronto, ON
Full-time
As a Application Support Engineer for our Quantitative Investment Services, you'll take ownership of the reliability and performance of mission-critical trading platforms. This is more than…
Added 1 hour ago
Software Developer (iOS)
Priceline
Toronto, ON
Full-time
Create innovative features on the platform from scratch.
Added 1 hour ago
Industrial Engineer/ Solutions Engineer
Pet Valu
Toronto, ON
Full-time
This position reports to the Director, Supply Chain Strategy & Solutions, the Supply Chain (SC) Solutions Engineer is responsible for identifying, evaluating, designing, and implementing…
Added 1 hour ago
Senior Manager, Data Product Manager
Scotiabank
Toronto, ON
…products published on Harbour, the bank's Azure Databricks data platform, following the Harbour target architecture and its producer/consumer model ("engineer once, consume many"). This…
Added 1 hour ago
Engagement Manager
Greenlight Consulting
Toronto, ON
$110,000 to $130,000 CAD / year
…design, and technical specification, alongside an Automation Engineer who owns the build. This role sits above both, as the commercial and relational anchor keeping the engagement on track,…
Added 2 hours ago
Systems Engineer – End-to-End Software Diagnostics & Observability
Vertage
Ottawa, ON · Kanata, ON
Contract
Job title: Systems Engineer – End-to-End Software Diagnostics & Observability
Added 2 hours ago
ALMT Support Analyst/engineer
TekWissen ®
Montreal, QC
$390 to $491 CAD / hour
Contract
The APS Analyst/engineer is responsible and accountable for daily support and health of the production environment for multiple applications in ALMT APS.

AceStack

Linux Security Engineer / Toronto, ON (Onsite) - FTE

Toronto, ON, Canada

Job type: Full-time
Apply by: Oct 29, 2026
Posting language: English
Posted: Sep 29, 2026

Apply About employer

Applications open in a new tab.

Original job description

Role: Linux Security Engineer

Location: Toronto, ON

Work Arrangement: Onsite

Employment Type: Fulltime FTE - Permanent

Experience: 6–8 Years

Job Description: We are seeking an experienced Linux Security Engineer to strengthen Linux security, vulnerability management, configuration compliance, and patching across the enterprise Linux estate. The ideal candidate will have strong experience with Linux hardening, Qualys, Puppet, Foreman, CIS benchmarks, security baselines, patch management

Key Responsibilities

Partner with Linux and Platform Engineering teams to define and enforce Linux hardening standards, ensuring new Linux systems are compliant with security requirements from day one.
Own the Linux vulnerability management lifecycle, including triaging findings from Qualys, prioritizing vulnerabilities based on SLA, and coordinating remediation with Linux teams.
Drive vulnerability remediation through Puppet and Foreman, ensuring vulnerabilities are addressed within defined timelines.
Track and report missed-target vulnerabilities across BTN and CMRI Linux environments.
Escalate overdue or missed vulnerabilities with documented remediation plans or delegation plans based on the team ownership model.
Validate Linux configuration compliance against CIS Benchmarks and enterprise security baselines.
Identify and raise Puppet module gaps to Platform Engineering teams and coordinate remediation.
Coordinate Linux patching schedules and maintenance windows and ensure adherence to enterprise patching requirements.
Support the evaluation and adoption of ServiceNow as a unified patch orchestration platform.
Help transition from manually created, per-patch Jira change tickets to automated scheduled pipeline execution through ServiceNow.
Deploy, configure, and validate endpoint security agents, including CrowdStrike Falcon, across Linux hosts in partnership with Linux engineering teams.
Monitor endpoint security agent deployment and ensure Linux hosts maintain required security coverage.
Contribute to bi-weekly vulnerability reporting for senior leadership, providing status, trends, risks, remediation progress, and missed-target details.
Collaborate with security, infrastructure, platform, and application teams to improve Linux security posture and remediation processes.

Required Skills & Experience

6–8 years of experience in Linux Security, Linux Engineering, Infrastructure Security, or a related role.
Strong hands-on experience with Linux security hardening and vulnerability management.
Experience with Qualys for vulnerability assessment, triage, prioritization, and remediation tracking.
Strong experience with Puppet for configuration management and security remediation.
Experience with Foreman and Linux infrastructure management.
Strong understanding of CIS Benchmarks and enterprise Linux security baselines.
Experience with Linux patch management, maintenance windows, and vulnerability remediation SLAs.
Experience with ServiceNow for change management, patch orchestration, or automated workflows.
Understanding of Jira change management and migration toward automated change/pipeline processes.
Hands-on experience deploying and validating CrowdStrike Falcon or similar endpoint security agents on Linux systems.
Strong understanding of vulnerability lifecycle management, security compliance, remediation tracking, and reporting.
Ability to work effectively with Linux Engineering, Platform Engineering, Cybersecurity, and Infrastructure teams.
Strong analytical, troubleshooting, documentation, and communication skills.

Preferred Skills

Experience supporting large-scale enterprise Linux estates.
Experience with automated patching and configuration management pipelines.
Knowledge of DevSecOps and infrastructure security automation.
Experience preparing vulnerability and compliance reports for senior leadership.
Financial services or other highly regulated enterprise environment experience is an asset.

Key Skills

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More about this job

Responsibilities

Define and enforce Linux hardening and security compliance standards, manage vulnerability triage and remediation using Qualys, Puppet, and Foreman, and coordinate patching and endpoint security agent deployment. Track remediation progress and missed targets, support automated patch orchestration through ServiceNow, and report vulnerability status, risks, and trends to senior leadership.

Requirements

Requires 6–8 years of experience in Linux security, engineering, or infrastructure security, with hands-on expertise in Linux hardening, Qualys, Puppet, Foreman, CIS Benchmarks, and vulnerability remediation. Candidates should also have experience with patch management, ServiceNow and Jira workflows, Linux endpoint security agents, compliance reporting, and cross-functional collaboration.

Skills

Linux Security
Linux Hardening
Qualys
Puppet
Foreman
CIS Benchmarks
Vulnerability Management
Patch Management
ServiceNow
Jira
CrowdStrike Falcon
Endpoint Security
Configuration Compliance
Security Baselines
SLA Management
Infrastructure Security

Visa sponsorship

Not detected in the job text

Keywords

Linux Security
Linux Hardening
Qualys
Puppet
Foreman
CIS Benchmarks
Security Baselines
Vulnerability Management
Vulnerability Remediation
Patch Management
ServiceNow
Jira
CrowdStrike Falcon
Endpoint Security
Configuration Compliance
Linux Engineering
Platform Engineering
Infrastructure Security
Security Compliance
SLA Management
Automated Workflows
Patch Orchestration
DevSecOps
Infrastructure Automation
Enterprise Linux
Maintenance Windows
Vulnerability Reporting
Financial Services

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