Senior Corporate Security Engineer, Mirantis
Enterprise on-prem cloud & kubernetes support
Be an early applicant
Enterprise on-prem cloud & kubernetes support
501-1000 employees
Be an early applicant
501-1000 employees
Company mission
To empower developers and innovators to create extraordinary products and services by automating the discovery, integration, and operation of the best cloud and open-source technologies for their unique needs.
Role
Who you are
- 4+ years of experience in a corporate/enterprise security, security operations, or IT security engineering role
- Hands-on experience with endpoint security (EDR) across macOS and Windows; experience with device management (MDM) and managing Linux endpoints is a plus
- Strong working knowledge of identity and access management — SSO, MFA, and modern IAM platforms (e.g., Okta, Entra ID/Azure AD, Google Workspace) — and least-privilege access practices
- Experience operating a SIEM and detection tooling — writing and tuning rules, triaging alerts, and investigating suspicious activity. Experience with Splunk is preferred
- Practical incident response experience — investigation, containment, remediation, and root cause analysis — and comfort coordinating with an external SOC/MSSP
- Solid grasp of security fundamentals — network and host hardening, common attack techniques, and how to reduce attack surface
- Familiarity with compliance frameworks such as ISO 27001 and SOC 2, and experience operating or evidencing security controls
- Experience with vulnerability management and translating findings into concrete remediation
- A collaborative working style suited to a distributed team, with clear written communication and reliable handoffs across time zones
- Based in the United States, with the ability to provide security operations coverage during US business hours
- Scripting/automation ability (Python, Bash, PowerShell) to streamline security operations is a strong plus; alternatively, a demonstrated ability and strong desire to pick these up quickly
- Experience running security awareness and phishing-simulation programs is a plus
- Relevant certifications (e.g., Security+, GIAC/GCIH/GCIA, CISSP, or vendor-specific EDR/SIEM/IAM certs) are a plus
- Exposure to cloud and SaaS security posture (AWS, Google Workspace, M365) is a plus
What the job involves
- Mirantis is seeking a Corporate Security Engineer to join our security team, based remotely in the United States
- We're adding this role to extend our security operations coverage beyond EU hours and to bring additional hands-on capacity to the team — improving how quickly we detect, triage, and respond to issues across the working day
- This is a broad, hands-on engineering role covering the core of corporate security: endpoint protection (EDR) and device management (MDM), identity and access (IAM/SSO, MFA), and the detection-and-response stack (SIEM, alerting, and coordination with our existing external SOC)
- You will be part of the team that responds when something happens, and you'll help harden the environment so that fewer things do
- Alongside this, you'll support our compliance program — ISO 27001, SOC 2, and related efforts — by operating and evidencing the controls these systems enforce
- In this role, you will operate and improve the tooling that protects our workforce and corporate environment, take part in incident response, and partner closely with IT, Product Security, and Compliance
- You'll join a distributed team, bring US-hours ownership to work that currently leans on EU coverage, and have real latitude to raise the bar on how corporate security runs day to day
- Endpoint Security & Device Management: Define and own the security policies, hardening baselines, and compliance posture for our EDR and MDM stack across the fleet, and drive threat response on endpoints. Partner with IT, who handle day-to-day enrollment and administration, so that devices are consistently enrolled, compliant, and protected across operating systems
- Identity & Access Management: Administer and strengthen identity and access — IAM/SSO, MFA, provisioning/deprovisioning, and least-privilege access reviews. Partner with IT to keep the identity layer both secure and workable for employees
- Detection, Monitoring & Incident Response: Operate the SIEM and detection tooling — tuning rules, triaging alerts, and investigating suspicious activity — and coordinate with our existing external SOC on monitoring and escalations. Take an active part in incident response end to end: investigation, containment, remediation, and root cause analysis. Contribute to post-incident reviews and runbooks, and bring US-hours ownership to work that currently leans on EU coverage
- Security Tooling & Hardening: Operate, integrate, and improve the broader corporate security toolset. Proactively harden the environment — configuration baselines, access controls, and reducing attack surface — so that fewer incidents occur in the first place
- Compliance Support: Support our compliance program (ISO 27001, SOC 2, and related efforts) by operating and evidencing the security controls these frameworks require. Partner with Compliance on audits, control mapping, and evidence collection
- Vulnerability & Threat Management: Track and help remediate vulnerabilities across endpoints and corporate systems. Stay current on relevant threats and translate them into concrete improvements to our posture
- Security Awareness & Phishing: Run and improve the security awareness program — training, phishing simulations, and employee-facing guidance. Help build a security-conscious culture and reduce the human attack surface across the company
- Cross-Team Collaboration & Coverage: Work closely with IT, Product Security, and Compliance as part of a distributed team. Extend security operations coverage into US time zones and help ensure smooth handoffs with EU-based colleagues
Our take
The global cloud-native applications market has grown rapidly in recent years, as more companies look for scalable and flexible ways to build and run software. Managing these environments - often spread across cloud, on-prem, and hybrid setups - has become increasingly complex. SO that's where Mirantis comes in, focusing on open cloud software and what it calls a ZeroOps approach to simplify operations.
Mirantis offers a range of products used by millions of developers, designed to make it easier to build, deploy, and manage modern applications, Its tools help teams move away for manually handling infrastructure so they can focus more on writing code and delivering new features. As cloud environments continue to evolve, the company is a flexible, open alternative that adapts alongside changing developer needs.
Recently, Mirantis has been pushing further into this space with the development of k0rdent, an open-source platform designed dot act as a "super control plane" for managing Kubernetes across multiple environments. With its latest updates, k0rdent helps teams standardize how they deploy, scale, and monitor applications across cloud, on-prem, and hybrid setups. This focus on simplifying large-scale infrastructure management, combined with an open, community-driven approach, shows Mirantis is doubling down on helping organizations stay flexible while avoiding vendor lock-in.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 4 rounds)
Aug 2015
$100m
SERIES C
Oct 2014
$100m
SERIES B
Total funding: $220m
Company HQ
Pruneyard / Dry Creek, Campbell, CA
Leadership
Alex Freedland
(Co-Founder & CEO)Alongside Mirantis, Alex is an Advisor, Investor & Board Observer at Session AI and a Strategy Advisor at Nova Labs. Previously, he served as the CFO at FreedomFi for 3 years.
James Walbom
(CFO)Prior to joining Mirantis in 2026, James was a Global VP of Finance at SUSE and a VP of Finance & Operations/CFO at Rancher Labs.
Shaun O'Meara
(CTO)Shaun joined Mirantis in 2015 as a Senior Systems Architect, moving into the role of Field CTO in 2017 and CTO in 2024. Prior to Mirantis, he spent 15 years at Business Connexion as a Senior then Principal Systems Engineer and Solutions Architect.
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