Senior Attack Engineer, Kubernetes

Horizon3.ai

. Lead offensive security research into Kubernetes clusters, workloads, identities, configurations, and cloud-connected environments .

Posted 11/6/2026full-timeRemote • United StatesSenior💰 $206,278 - $242,680 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates deep expertise in Kubernetes security, offensive testing, and Python engineering, with a strong focus on developing attack capabilities and validating security weaknesses in containerized environments. Proven ability to lead complex technical projects, communicate effectively, and mentor team members in offensive security practices.

Highest-signal resume keywords

Kubernetes SecurityPython EngineeringOffensive Security TestingPenetration TestingManaged Kubernetes Services

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Kubernetes ArchitectureRBACService AccountsWorkloadsContainer SecurityNetwork Attack PathsCloud Workload IdentityLinuxHelmInfrastructure as Code

Soft Skills

Strong Written CommunicationTechnical PlanningMentoringCross-Functional CollaborationSafety Mindset

Tools & Technologies

NodeZeroEKSGKEAKSOKE

Industry Keywords

Offensive SecurityVulnerability ResearchRed TeamingOpen-Source Security ToolingPublic Research

Tech Stack

Tools & technologies

CloudKubernetesLinuxNode.jsPython

About the role

Key responsibilities & impact

Lead offensive security research into Kubernetes clusters, workloads, identities, configurations, and cloud-connected environments
Design and build production-quality Python attack capabilities modeling realistic attacker perspectives, including an assumed-breach foothold in a pod or workload
Develop and validate attack paths involving Kubernetes RBAC, service accounts and credentials, workloads and pods, secrets, cluster and node boundaries, network reachability, cloud identities, and managed Kubernetes services
Assess Kubernetes security weaknesses and determine whether they create meaningful, provable impact
Build safe validation and negative testing into capabilities
Own technical planning for substantial Kubernetes initiatives, identify coverage gaps, prioritize research, make design trade-offs, and coordinate delivery with Product, platform, and engineering partners
Integrate attack content into NodeZero execution and results flows so customers receive reliable evidence and clear explanations
Review code and designs, establish quality expectations, mentor teammates, and share Kubernetes offensive-security expertise
Document methodologies, assumptions, limitations, and test approaches
Contribute to internal and external technical enablement where appropriate
Lead development of Kubernetes attack capabilities in NodeZero and help define Horizon3's Kubernetes offensive security strategy

Requirements

What you’ll need

Deep hands-on experience with Kubernetes security and offensive testing of containerized environments
Expert-level understanding of Kubernetes architecture and identity and authorization controls, especially RBAC, service accounts, workloads, and cluster boundaries
Strong Python engineering skills and experience productizing security research into reliable automation
Experience with penetration testing, red teaming, vulnerability research, container security, or offensive security tooling
Ability to lead ambiguous, cross-functional technical work and communicate attack paths and impact clearly
Strong safety and product mindset
Record of owning complex technical projects and making sound trade-offs
Strong written communication and documentation skills
Experience with EKS, GKE, AKS, OKE, or other managed Kubernetes services
Knowledge of Linux, containers, cloud workload identity, Kubernetes operators, Helm, or infrastructure as code
Experience with network attack paths, container escape research, or cloud-to-cluster attack paths
Contributions to open-source security tooling, public research, conference talks, or vulnerability disclosure
Must be legally authorized to work in the United States
Must not require employment visa sponsorship now or in the future

Benefits

Comp & perks

Equity package in the form of stock options for all full-time roles
Health insurance for you and your family
Vision insurance for you and your family
Dental insurance for you and your family
Flexible vacation policy
Generous parental leave
Career development opportunities
Inclusive culture
Collaborative environment
Remote and hybrid work models depending on role and location