Senior Network Security Engineer

ResponsibilitiesTeam Intro: You will be a part of the Network Security Operations team responsible for Cyber Defense and Engineering. The Network Security Operations team's primary focus is management of security and defense platforms, technologies, tools, and services supporting security controls across TikTok's environments. As a Network Security Operations Specialist, you will be responsible for supporting cross‑functional teams including cyber, privacy, and data protection engineers, architects, and analysts to deploy, integrate, and manage technologies to support the security and protection of data in accordance with relevant geographical regulations, contractual commitments, and confidentiality requirements.Hybrid work schedule: At this time, our organization follows a hybrid work schedule that requires employees to work in the office 3 days a week, or as directed by their manager/department. We regularly review our hybrid work model, and the specific requirements may change at any time.Must be skilled in conducting technical analysis of network security and business problems, as well as threats, incidents, investigations, workforce protection, and other general security‑related issues.Must have the ability to communicate well, participate in coordinating response and defensive actions over a variety of security disciplines, and disseminate security information as appropriate in support of TikTok's critical business, go‑to‑market, and operational infrastructure needs.Possess in-depth knowledge of network architecture, troubleshooting, and security protocols. Play a key role in designing, implementing, and maintaining our network systems, ensuring seamless performance and secure connectivity.Develop, deploy, and maintain security architectures, including firewalls, VPNs, IDS/IPS systems, and network access controls.Continuously monitor network traffic, logs, and alerts to identify and respond to security threats in real‑time.Investigate and respond to security breaches and incidents; perform root‑cause analysis and implement corrective actions.Conduct regular vulnerability assessments, penetration tests, and security audits to identify and address potential risks.Develop and enforce security best practices, protocols, and policies for network security operations.Ensure network security compliance with relevant regulatory requirements (e.g., GDPR, HIPAA, PCI‑DSS).Maintain the latest security patches and updates across all network systems and devices.Work closely with IT teams, developers, and management to strengthen security posture; provide guidance and training to other employees on security practices.Maintain detailed documentation of security configurations, incidents, processes, and troubleshooting procedures.QualificationsMinimum Qualifications:Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field.5+ years of experience in network security, with a proven track record of designing and implementing security solutions.Deep knowledge of network protocols, architecture, and security technologies (firewalls, VPN, IDS/IPS, DLP, etc.).Experience with security monitoring tools (SIEM, packet sniffers, etc.).Proficiency in performing penetration testing and vulnerability assessments.Familiarity with operating systems (Windows, Linux) and cloud security platforms (AWS, Azure).Knowledge of encryption, authentication, and authorization protocols.Strong ability to identify and mitigate risks, troubleshoot network issues, and make sound decisions under pressure.Excellent verbal and written communication skills to effectively communicate security concepts to technical and non‑technical stakeholders.Travel: Open to travel as needed.Preferred Qualifications:Certified Information Systems Security Professional (CISSP)Certified Ethical Hacker (CEH)Cisco Certified Network Professional Security (CCNP Security)Certified Information Security Manager (CISM)Cloud Security Certifications, e.g., Certificate of Cloud Security Knowledge (CCSK)About USDSTikTok is the leading destination for short‑form mobile video. Our mission is to inspire creativity and bring joy. U.S. Data Security (“USDS”) is a subsidiary of TikTok in the U.S. This security‑first division focuses on oversight and protection of the TikTok platform and U.S. user data, ensuring millions of Americans can safely use TikTok for learning, income, expression, or entertainment. USDS teams span Trust & Safety, Security & Privacy, Engineering, User & Product Ops, Corporate Functions and more.Why Join UsInspiring creativity is at the core of TikTok's mission. Our innovative product helps people authentically express themselves, discover and connect. We strive to do great things with great people, leading with curiosity, humility, and a desire to make impact in a rapidly growing tech company. Every challenge is an opportunity to learn and innovate as one team. We embrace challenges and iterate with an “Always Day 1” mindset, achieving meaningful breakthroughs for ourselves, our company, and our users. Diversity & Inclusion: TikTok commits to an inclusive workplace valuing diverse skills, experiences, and perspectives.Reasonable AccommodationUSDS is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs, or other protected reasons. If you need assistance or a reasonable accommodation, please reach out at https://tinyurl.com/USDS-RA.Job InformationCompensation Description (Annually): The base salary range for this position in the selected city is $112,860 – $186,200 annually. Compensation may vary outside this range depending on a candidate’s qualifications, skills, competencies and experience, and location.Benefits may vary by employment type and location, including medical, dental, vision insurance, a 401(k) savings plan with company match, paid parental leave, short‑term and long‑term disability coverage, life insurance, wellbeing benefits, and paid holidays and sick days. #J-18808-Ljbffr