Senior Security Engineer, Detection and Response

About Cape

Cape is America’s privacy-first mobile carrier. Our mission is to be a force for good in global wireless. Cape was founded in 2022 by people who believe privacy is a fundamental right, not a luxury to be traded away. Our journey began when our founder recognized a critical vulnerability in our modern world: everyone relies on the same stagnant cellular infrastructure and legacy systems that track our every movement, monitor and profile our connections, and lose and sell our personal data.

Instead of accepting the status quo, we decided to fix it. National security professionals, journalists, parents, and everyone in between can stay connected and have privacy.

We didn’t just build a layer on top of old tech; we built America’s most private and secure mobile carrier from the ground up. By building our own network from scratch, we are able to design and build a suite of privacy and security features that no other carrier on the planet can offer.

Today, Cape provides our secure network to consumers, businesses, and government agencies alike. We closed our Series C in March 2026, and we are scaling rapidly, with the goal of giving people back control of their most personal information.

At Cape, we are the architects of a privacy-centric movement that is just getting started. We are relentless builders, constantly innovating at the edge of what’s possible in telecommunications. We operate on a foundation of high trust and high expectations. As a member of our team, you will collaborate with world-class engineers, architects, and visionaries, and work across organizational lines to solve "impossible" problems and deliver mission-critical results for our users every single day.

The Role

We are seeking a seasoned Security Engineer with a specialization in detection and response to join our team. As a strategic partner, you will be responsible for designing, implementing, and maintaining security measures that comply with regulatory standards, enhance internal processes, and minimize data security risks. Through developing ongoing security strategies and technologies, you will support the organization's business objectives and daily operations.

Responsibilities

• Design, implement, and manage robust security controls and policies across the business, enhancing our detection and response capabilities.

• Assist in addressing findings from automation and tooling, ensuring prompt and effective response and remediation.

• Run and manage detection tooling and automation across the organization

• Stay informed about the latest security threats, vulnerabilities, and compliance mandates affecting cloud environments, providing guidance on emerging technologies and security best practices.

• Offer expert guidance and mentorship to junior security team members and employees across the company, fostering an organizational culture of security awareness and continuous improvement.

• Collaborate with stakeholders to integrate security requirements effectively into IT projects and business initiatives.

Preferred Experience

• Bachelor's degree in Computer Science, Information Security, or a related field (or equivalent experience), with advanced degrees or certifications (e.g., CISSP, AWS Certified Security Specialty) being advantageous.

• A minimum of 7 years of experience in information security, with at least 3 years concentrated on detection and response.

• Deep understanding of AWS architecture, security services, and best practices for securing cloud applications and data.

• Proficiency in using infrastructure as code (IaC) tools (like Terraform or AWS Cloud Formation) and in automating security tasks within AWS.

• Skilled in scripting languages (Python, Type Script, Go) for the automation of security tasks and the integration of security tools.

• Solid knowledge of network security, encryption technologies, and secure coding practices.

• Excellent analytical skills for identifying and mitigating complex security vulnerabilities and risks.

• Strong communication and leadership abilities, capable of working collaboratively across teams and effectively conveying technical information to non-technical stakeholders.

• Organized and able to manage…