Senior Offensive Security Engineer – Remote, AI/Cloud

Lever, Inc.; España; A distancia; EUR 110.000 - 150.000; Jornada completa

Descripción de la vacante

Lever, Inc. is seeking an experienced Offensive Security Engineer based in Spain to join a hands-on security team.

You will simulate sophisticated attacks across cloud compute, storage, networking, and AI infrastructure, contributing to scalable red team programs and security research. You will work with detection and security engineering teams to validate defenses, develop custom tooling, and produce actionable leadership reports.

Formación

• 6+ years in offensive security, pentesting, red teaming, or related discipline.
• Hands-on experience attacking cloud-native environments including Kubernetes privilege escalation, cloud IAM abuse, virtualization, and container escape techniques.
• Proven ability to develop custom security tooling and post-exploitation capabilities using Python, Go, or similar languages.
• Experience conducting purple team exercises and collaboration with blue teams and defensive functions.
• Ability to communicate complex technical findings via clear, senior-level reports with actionable remediation guidance.
• Experience with ML infrastructure, model-serving pipelines, or GPU clusters is a strong advantage.
• Reverse engineering and exploit development experience is a plus.
• Application security experience is advantageous.

Responsabilidades

• Validate and extend Secure SDLC threat models through continuous penetration testing and risk assessment.
• Automate routine security validations to keep pace with platform evolution while reserving manual analysis for high-impact scenarios.
• Plan and execute full-scope red team engagements across cloud compute, storage, inference, networking, orchestration, and tooling.
• Identify attack paths impacting operations, customer environments, or critical assets.
• Collaborate with detection and response teams on purple team exercises and close defensive gaps.
• Research novel attacks against GPU infrastructure and AI platform services.
• Investigate vulnerabilities in inference technologies and platform services, including model-serving infrastructure.
• Assess tenant isolation and explore low-level paths that could compromise isolation.
• Conduct targeted offensive security assessments before production changes.
• Develop custom offensive tooling and post-exploitation capabilities for scalable testing.
• Produce clear, actionable reports for technical teams and leadership with remediation guidance.
• Establish and improve red team processes, tooling, and practices as the platform scales.

Conocimientos

Offensive security

Penetration testing

Red teaming

Purple team

Python

Go

Cloud-native

Kubernetes

IAM abuse

Exploit development

Descripción del empleo

Lever, Inc. is seeking an experienced Offensive Security Engineer based in Spain to join a hands-on security team.

You will simulate sophisticated attacks across cloud compute, storage, networking, and AI infrastructure, contributing to scalable red team programs and security research. You will work with detection and security engineering teams to validate defenses, develop custom tooling, and produce actionable leadership reports.