Senior Software Engineer – Product Security

vCluster

. Design, build, and maintain production features alongside the engineering team .

Posted 9/29/2026full-timeRemote • United States, Germany, CanadaSenior💰 $135,000 - $175,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building secure production systems using Go, with a strong focus on Kubernetes and security best practices. Capable of threat modeling, vulnerability assessment, and providing clear risk communication to engineering teams.

Highest-signal resume keywords

Go Programming LanguageKubernetes API ServerThreat ModelingContainer SecurityCKS Certification

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Building Production SystemsInvestigating VulnerabilitiesFixing Security IssuesDesign ReviewSecurity Best Practices

Soft Skills

Clear CommunicationCollaboration

Tools & Technologies

KubernetesController-RuntimeKubebuilderClient-Go

Certifications & Qualifications

CKS Certification

Industry Keywords

CVE LifecycleCoordinated DisclosurePatch ReleasesRBACPolicy Best Practices

Tech Stack

Tools & technologies

KubernetesGo

About the role

Key responsibilities & impact

Design, build, and maintain production features alongside the engineering team
Work on roadmap features when security work is not in the queue
Triage, prioritize, and fix security issues in code and dependencies through a patched release
Review security-sensitive designs and threat-model new features
Participate in code reviews, design reviews, and technical discussions
Help engineers build secure defaults into the product
Serve as the security expert for the product
Build secure infrastructure software for AI infrastructure platforms and Kubernetes-based tenant isolation

Requirements

What you’ll need

Experience building and shipping production systems with Go as a primary language
Working knowledge of Kubernetes API server, admission control, RBAC, controllers, and kubelet
Experience building controllers or operators with controller-runtime, Kubebuilder, or client-go
Hands-on experience with container breakout, privilege escalation, RBAC, and policy best practices
Experience threat modeling and reviewing designs for production systems
Ability to explain risk clearly to other engineers
Experience investigating and fixing vulnerabilities in code
Knowledge of the CVE lifecycle, coordinated disclosure, and patch releases
CKS certification is a bonus
Experience at an early-stage organization is a bonus

Benefits

Comp & perks

Competitive compensation package including equity
Health, dental, vision, and life insurance for you and eligible dependents (benefits vary depending on country)
Flexible working schedule
Workplace flexibility
Equity
Bonus