Endpoint Security Software Engineer, iOS - USDS
Responsibilities
About the team
The Security Engineering team is missioned to run and operate security infrastructures, platforms and technologies, as well as to support cross-functional teams to protect our users, products and infrastructures. This team is responsible for enhancing security tools and identifying vulnerabilities, with a specific focus on content assurance and the application of large language models (LLMs). You'll collaborate cross-functionally with partners inside and outside TikTok to fortify our products and users' security, helping to establish TikTok as the most trusted platform.
Responsibilities
We are seeking a Software Engineer to be a core member of our Apple Platforms team. In this role, you will lead the design and development of an AppGuard security framework, specifically focusing on the monitoring and management of all egress/ingress traffic. You will be a key contributor in a greenfield environment, applying high-performance engines and Domain-Specific Languages (DSL) to ensure application assurance.
- Architect Security Solutions: Take ownership of the technical direction for AppGuard, from initial design to implementation on iOS and macOS.
- Traffic & Policy Control: Develop capabilities to monitor and cut-off application traffic based on dynamic rule updates and sampling
- Performance Engineering: Implement high-performance engines to execute DSL-based logic for real-time security judging.
- Tooling Development: Design and develop associated platforms for the integration, testing, validation, and profiling of sandbox components.
- Collaborate Cross-Functionally: Work with stakeholders to ensure security solutions meet operational needs without compromising user experience.
Qualifications
Minimum Qualifications
- BS/MS degree in Computer Science, Engineering, or a related field.
- 3+ years of experience in mobile and desktop app development for Apple platforms.
- Expertise in Objective-C and Swift, with a deep understanding of Darwin-based frameworks and system-level tools.
- Performance Optimization: Proven experience with memory management, network optimization, and battery efficiency.
Preferred Qualifications
- Hands-on experience with Network Extensions or system-level traffic filtering.
- Demonstrated ability to contribute to architectural design and translate business security goals into technical vision.
- Familiarity with AI-enabled development tools (e.g., Cursor, Replit) to accelerate core logic implementation.
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Job Information
[For Pay Transparency] Compensation Description (annually)
The base salary range for this position in the selected city is $187040 - $359720 annually.
Compensation may vary outside of this range depending on a number of factors, including a candidate's qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.
Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).
The Company reserves the right to modify or change these benefits programs at any time, with or without notice.
For Los Angeles County (unincorporated) Candidates:
Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:
1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;
2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and
3. Exercising sound judgment.
Perks and Benefits
Health and Wellness
- Health Insurance
- Dental Insurance
- Vision Insurance
- HSA
- Life Insurance
- Fitness Subsidies
- Short-Term Disability
- Long-Term Disability
- On-Site Gym
- Mental Health Benefits
- Virtual Fitness Classes
Parental Benefits
- Fertility Benefits
- Adoption Assistance Program
- Family Support Resources
Work Flexibility
- Flexible Work Hours
- Hybrid Work Opportunities
Office Life and Perks
- Casual Dress
- Snacks
- Pet-friendly Office
- Happy Hours
- Some Meals Provided
- Company Outings
- On-Site Cafeteria
- Holiday Events
Vacation and Time Off
- Paid Vacation
- Paid Holidays
- Personal/Sick Days
- Leave of Absence
Financial and Retirement
- 401(K) With Company Matching
- Performance Bonus
- Company Equity
Professional Development
- Promote From Within
- Access to Online Courses
- Leadership Training Program
- Associate or Rotational Training Program
- Mentor Program
Diversity and Inclusion
- Diversity, Equity, and Inclusion Program
- Employee Resource Groups (ERG)
Company Videos
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