Senior Security Engineer, Offensive Security and Blockchain

As a Senior Security Engineer at DFINITY, your key responsibilities will include leading Red Team strategies targeting crucial components of the Internet Computer Protocol, executing advanced threat research, developing exploits, and strengthening our infrastructure's security posture. You will also collaborate with teams to embed security best practices throughout the development lifecycle and handle incident responses efficiently.

To qualify for the Senior Security Engineer position at DFINITY, candidates should possess extensive experience in planning and executing Red Team engagements within both blockchain and traditional infrastructures. A strong understanding of various adversary emulation techniques, experience with securing Kubernetes clusters, as well as proficient skills in identifying and exploiting vulnerabilities specific to blockchain environments are essential.

At DFINITY, we believe in continuous learning and professional growth. Senior Security Engineers have access to comprehensive resources, mentoring, and a supportive environment that fosters technical and personal development. We encourage you to keep up-to-date with the latest threat landscapes and technologies through training programs and industry events.

As a Senior Security Engineer at DFINITY, you will work with a range of technologies including Kubernetes for container security, QEMU virtualization technologies, and advanced encryption practices. Your expertise in kernel-level vulnerabilities and hardening methods will play a crucial role in securing our decentralized systems and infrastructure.

DFINITY offers a robust benefits package for its employees, including competitive salaries that range from $175,000 to $240,000 per year, top-tier medical, dental, and vision insurance, 401(k) plans, flexible PTO policies, and paid holidays. We prioritize our employees' well-being and work-life balance, making it an enriching place to build your career.

When discussing your experience with Red Team operations, focus on specific projects where you planned and executed engagements that simulated advanced persistent threats. Highlight methodologies you used, any tools you developed, and how your actions helped the organization identify and mitigate vulnerabilities in their systems.

Showcase your understanding of blockchain's unique challenges when discussing your approach to vulnerability assessments. Emphasize techniques you deploy to analyze smart contracts and consensus mechanisms, along with specific tools you've used. Mention your experience in executing penetration tests tailored to blockchain infrastructures.

Share your methods for staying informed about emerging threats, such as subscribing to relevant security blogs, participating in industry forums, attending conferences, and engaging with security communities. Mention any certifications you’re pursuing that keep your knowledge current.

When addressing incident response, illustrate a structured approach by detailing how you identify, contain, eradicate, and recover from security breaches. Share a relevant example where your response strategies minimized damage and led to process improvements.

Discuss specific tools you’ve successfully used for exploit development, such as Metasploit, Burp Suite, or custom scripts. Explain your reasons for preferring them, focusing on their efficacy in various scenarios, ease of use, and integration capabilities with other tools.

Outline your strategies for embedding secure coding practices within the software development lifecycle. Discuss collaboration with developers, regular code reviews, security-focused training, and implementing tools that automatically scan for vulnerabilities during development.

Reflect on your familiarity with Kubernetes security practices, such as Role-Based Access Control (RBAC), network policies, and using tools like `kubectl` to manage cluster security. Provide examples of how you have implemented these measures to enhance the security of containerized applications.

Select a compelling project where you played a leadership role in achieving security objectives. Detail your specific contributions, the technologies used, and the outcomes, such as reduced vulnerabilities or improved incident response times, emphasizing teamwork and results.

Identify common challenges in securing decentralized systems, such as the unique nature of blockchain's consensus mechanisms and potential attack vectors. Elaborate on how you've addressed these challenges through innovative solutions and collaborative efforts.

Explain your approach to ensuring compliance with relevant security standards and regulations pertinent to blockchain technologies. Discuss audits, risk assessments you’ve conducted, as well as your experience implementing policies and controls that adhere to requirements.