Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.

Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves.

Our Information Security organisation is seeking an innovative and highly skilled Senior Staff Red Team Security Engineer to join our Offensive Security team. As a key member of this elite group, you will play a crucial role in proactively identifying and mitigating risks to enhance our enterprise security posture. This position demands creative thinking, advanced technical skills, and the ability to simulate sophisticated cyber threats.

Key Responsibilities:

Design and execute complex, multi-stage Red Team operations that simulate advanced persistent threats (APTs).
Develop cutting-edge payloads and attack tools capable of evading modern security controls.
Conduct covert operations to assess and improve our organisation's security readiness.
Perform targeted attacks using both custom-built and industry-standard tools.
Deliver comprehensive technical reports and executive briefings on findings and recommended mitigation strategies.
Collaborate with Blue Team members to enhance overall security posture and incident response capabilities.
Contribute to the development of new Red Team methodologies and tools.
Stay current with emerging cyber threats and attack techniques.

Qualifications:

Proven experience in Red Team operations and adversary simulation.
Advanced skills in developing custom malware and evasion techniques across multiple platforms.
In-depth knowledge of adversarial tactics, techniques, and procedures (TTPs).
Expertise in both on-premise and cloud-based attack scenarios.
Strong programming skills in languages relevant to security testing and tool development.
Excellent analytical and problem-solving abilities.
Superior written and verbal communication skills, with the ability to convey complex technical concepts to both technical and non-technical audiences.
Self-motivation and the ability to work independently as well as in a team environment.
Relevant industry certifications (e.g., OSCP, OSCE, GXPN) are a plus.

Education:

Bachelor's degree in Computer Science, Cybersecurity, or a related field; or equivalent combination of education and experience.
Advanced degree or specialised training in cybersecurity is highly desirable.

Additional Requirements:

Willingness to continuously learn and adapt to the evolving threat landscape.
Ability to work in a fast-paced environment and handle multiple projects simultaneously.
Strong ethical standards and discretion when handling sensitive information.

At Five9, we offer a challenging and rewarding environment for top-tier security professionals. Join us in pushing the boundaries of offensive security and making a significant impact on our organisation's cyber resilience.

Benefits:

Five9 Shares
Bonus Scheme
10% Flexi Benefit
Meal Allowance
Medical Insurance
Life Insurance
25 day Annual Leave + Public Holidays

#LI-RS1 #LI-Hybrid

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives, and skills.  The more inclusive we are, the better we are.  Five9 is an equal opportunity employer.

Our headquarters are located in the San Francisco Bay Area with global hubs in the United Kingdom, Germany, Philippines, Portugal, and Australia.

View our privacy policy, including our privacy notice to California residents here: https://www.five9.com/pt-pt/legal.

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

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The recruiting function, including systems and processes, for Five9 are driven out of the US office with team members in various satellite offices. It is imperative that individuals responsible for the recruiting out of their respective offices, as well as team members in the United States, have the ability to share information and data. Often, this necessity extends beyond the recruiting team, and includes hiring managers as well. The recruiting function, including systems and processes, for Five9 are driven out of the headquarters in the United States with team members in satellite offices across various countries. • The HR Operations team, based in the US, must have access to hiring data from other countries in order to complete Compliance audits. • Our compensation and Benefits team , based in the US, must share and receive data from all offices with respect to job grading and compensation. • The FP&A team, based in the US, provides headcount and must receive offer details to hired employees for reporting purposes. • Our Payroll team, based in the US, must receive and provide data in order to complete payroll activities. • For many of the roles in other countries, the hiring manager is based in the US. They must have access to the resumes for candidates for assessment and access to offer documents for hired candidates for budget purposes. • The CFO must approve all offers and offer information must be shared across offices in order for that action to be satisfied. • The recruiting team needs access to data related to recruiting functions for reporting, process enhancements, data assessments. *

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