Demo

Software Engineer, Ads ML Infrastructure - USDS

TikTok
Seattle, WA Full Time
POSTED ON 12/18/2025
AVAILABLE BEFORE 1/16/2026
Responsibilities
Team Intro:
TikTok Ads is helping to power the open internet with the best technology that connects and creates value for millions of advertisers, users, and influencers across the world, driving continuous innovation and significant impact in the digital advertising space. The Ads Infra - Serving and Foundation Team builds advertising systems and integrations that power ads from creation to delivery and the data that influences decisions along the way. This system spans multiple data centers, supports rapid product iterations, and develops key advertising features.

As part of our team, you will have excellent opportunities to build the end-to-end Ads system that encompasses the complete lifecycle, including massive data gathering and processing, highly concurrent, high-performance, and highly scalable advertising delivery architecture, etc.

In order to enhance collaboration and cross-functional partnerships, among other things, 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.

Responsibilities:
- Responsible for the development of ads delivery and ranking systems for the global market.
- Responsible for the development of market specific features together with ads platform.
- Work independently on a variety of tasks from complex modules to subsystem level in high quality.
- Familiar with the entire software development life cycle, including product discussion, requirement analysis, document writing, system design, coding, testing, etc.

Qualifications
Minimum Qualifications:
- BS/MS degree in Computer Science, Computer Engineering, or a related technical discipline with industry experience.
- 1 years experience as a software engineer with proven contributions to team-based projects, ideally in a collaborative role.
- Solid programming skills, proficient in C/C and Python with a strong grasp of data structure and algorithms.
- Good collaboration skills, with the ability to work effectively with cross-functional teams across different locations and time zones for global business needs.

Preferred Qualifications:
- Experience in the Ad tech industry or recommendation systems.
- Experience with building large-scale backend infrastructure.
- Good knowledge in one of the following areas: machine learning, deep learning, backend, large-scale systems, data pipeline.

About USDS
TikTok 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 new, security-first division was created to bring heightened focus and governance to our data protection policies and content assurance protocols to keep U.S. users safe. Our focus is on providing oversight and protection of the TikTok platform and U.S. user data, so millions of Americans can continue turning to TikTok to learn something new, earn a living, express themselves creatively, or be entertained. The teams within USDS that deliver on this commitment daily span across Trust & Safety, Security & Privacy, Engineering, User & Product Ops, Corporate Functions and more.​


Why Join Us
Inspiring creativity is at the core of TikTok's mission. Our innovative product is built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and bring joy - a mission we work towards every day.​
We strive to do great things with great people. We lead 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're resilient and embrace challenges as they come. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our company, and our users. When we create and grow together, the possibilities are limitless. Join us.​

Diversity & Inclusion​
TikTok is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At TikTok, our mission is to inspire creativity and bring joy. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.​


USDS Reasonable Accommodation
USDS is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at https://tinyurl.com/USDS-RA​


Job Information
【For Pay Transparency】Compensation Description (Annually)
The base salary range for this position in the selected city is $129960 - $246240 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.​

Salary : $129,960 - $246,240

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