Senior Cybersecurity Engineer I - Secret Clearance

Segment (Twilio); Long Beach (CA); On-site; USD 120,000 - 155,000; Full time

Benefits offered by this job

Top-tier medical benefits

401(k) with company match

Onsite gym

Stock purchase program

EV charging stations

Job summary

Segment is seeking a Senior Cybersecurity Engineer I to design, implement, and maintain security for SDA programs based out of Long Beach, CA. This role requires active TS clearance and strong hands-on security engineering expertise across networks, servers, and applications.

The engineer will conduct risk assessments, enforce security policies, collaborate with IT and development teams, and mentor junior staff while staying current with threat trends and best practices.

Qualifications

• Bachelor’s degree in Computer Science, Information Security, or a related field.
• Active Top Secret security clearance required upon hire.
• 5+ years of experience in system security engineering or a related role.
• 8140 Intermediate or Advanced certification (e.g., Security+, Cloud+, CISSP, CISM, CEH, or equivalent).
• Strong knowledge of security frameworks and standards (e.g., NIST 800, ISO 27001, CIS Controls).
• Proficiency with security tools and technologies (e.g., firewalls, IDS/IPS, SIEM, endpoint protection).
• Experience with cloud security (AWS, Azure, GCP) and securing hybrid environments.
• U.S. citizenship required due to program requirements.

Responsibilities

• Design, implement, and manage security solutions to protect program IT infrastructure, including networks, servers, and applications.
• Conduct regular security assessments, vulnerability scans, and penetration tests to identify and mitigate security risks.
• Develop and enforce security policies, procedures, and standards to ensure compliance with industry regulations and best practices.
• Monitor security systems and respond to security incidents, providing detailed analysis and remediation.
• Collaborate with IT and development teams to integrate security best practices into the software development lifecycle.
• Stay current with the latest security trends, technologies, and threats, and recommend enhancements to improve the organization’s security posture.
• Mentor and provide guidance to junior security engineers and other IT staff.

Skills

Top Secret clearance

5+ years experience

Security engineering

DevSecOps awareness

Threat modeling

Education

Bachelor’s degree in Computer Science, Information Security, or related field

Tools

Firewalls

IDS/IPS

SIEM

Endpoint protection

Cloud security (AWS, Azure, GCP)

Job description

Senior Cybersecurity Engineer I - Top Secret Clearance

Based out of Long Beach, CA, the Senior Cybersecurity Engineer I—Top Secret Clearance will design, implement, and maintain the security infrastructure of SDA programs.

Responsibilities

• Design, implement, and manage security solutions to protect program IT infrastructure, including networks, servers, and applications.
• Conduct regular security assessments, vulnerability scans, and penetration tests to identify and mitigate security risks.
• Develop and enforce security policies, procedures, and standards to ensure compliance with industry regulations and best practices.
• Monitor security systems and respond to security incidents, providing detailed analysis and remediation.
• Collaborate with IT and development teams to integrate security best practices into the software development lifecycle.
• Stay current with the latest security trends, technologies, and threats, and recommend enhancements to improve the organization’s security posture.
• Mentor and provide guidance to junior security engineers and other IT staff.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Security, or a related field.
• Active Top Secret security clearance required upon hire.
• 5+ years of experience in system security engineering or a related role.
• 8140 Intermediate or Advanced certification (e.g., Security+, Cloud+, CISSP, CISM, CEH, or equivalent).
• Strong knowledge of security frameworks and standards (e.g., NIST 800, ISO 27001, CIS Controls).
• Proficiency with security tools and technologies (e.g., firewalls, IDS/IPS, SIEM, endpoint protection).
• Experience with cloud security (AWS, Azure, GCP) and securing hybrid environments.
• U.S. citizenship required due to program requirements.

Preferred Qualifications

• Master’s degree in Computer Science, Information Security, or related field.
• Excellent understanding of network protocols, operating systems, and application security.
• Experience with DevSecOps practices and tools.
• Experience with incident response and digital forensics.
• Familiarity with scripting and automation (e.g., Python, PowerShell).
• Strong analytical and problem‑solving skills with the ability to act decisively under pressure.
• Excellent communication and interpersonal skills for cross‑functional collaboration.

Benefits

• Base salary range (CA only) $120,000—$155,000 USD.
• Company equity and a robust benefits package: top tier medical HMO, PPO, 100% company‑sponsored medical HSA plan option, dental and vision coverage, 3 weeks paid vacation, 5 days sick leave, 11 paid holidays, flexible spending and dependent care savings accounts, paid parental leave, disability insurance, life insurance, and a 401(k) retirement plan with company match.
• Other perks: discounted employee stock purchase program, subsidized EV charging stations, onsite gym, food and drinks, and additional discounts.

Equal Employment Opportunity

Rocket Lab provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.