Senior Software Engineer

Responsibilities

The Ads Measurement & Effectiveness team at TikTok empowers marketers and brands to understand and optimize the true business value of their ad investments across TikTok's paid channels. Our mission is to provide advertisers with clear, actionable insights through cutting-edge measurement solutions like Brand Lift (BLS), Conversion Lift (CLS), Split Test, Cross-Media Measurement, as well as measurement solutions with 3rd party partners. We build client facing products and scalable infrastructure that support large-scale experimentation, causal inference, and data-driven decision-making. Our work is foundational to TikTok's advertising ecosystem, driving both strategic insights and revenue growth. Why Join Us? - You'll work on technically deep systems and infrastructure at the intersection of distributed systems and causal inference. - Be part of a team with strong product ownership-you'll not only build the infrastructure, but also see its impact on advertisers worldwide. - Tackle high-impact challenges like uplift optimization, bias correction, cross-platform attribution, and real-time performance optimization. - Join a fast-growing, business-critical team with abundant career growth opportunities, both technically and organizationally. As a Senior Software Engineer on the Ads Measurement team, you'll work on end-to-end product development and contribute to high-performance systems that measure and maximize ad effectiveness. You'll collaborate with product managers, data scientists, and platform engineers to solve complex technical challenges that directly impact TikTok's advertisers and end users. What You'll Own - Design and develop highly scalable backend systems to measure Ads effectiveness. - Own and expand core products like Split Test, CLS, and BLS, enabling advertisers to rigorously test and evaluate campaign performance. - Build and optimize large-scale data pipelines and real-time experimentation frameworks to power critical advertiser insights. - Collaborate cross-functionally with product, infrastructure, and data science teams to translate ideas into measurable impact. - Integrate with third-party measurement partners to enable comprehensive attribution and validation. - Help evolve the underlying tech infrastructure to support privacy compliance, high QPS environments, and multi-region deployment. - Mentor junior engineers to grow and help build a strong engineering team.

Qualifications

Minimum Qualifications - Software development experience in backend or data-intensive systems. - Proficient in at least one of the following: Python, Go, Java, C/C++. - Strong understanding of system design, algorithms, and data structures. - Familiar with large-scale backend architecture or data infrastructure. - Curiosity about new technologies and a self-starter mindset. Preferred Qualifications: - Domain knowledge in Ads tech, experimentation methodology. - Understanding of advertiser needs and the business value of digital marketing.

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.

About TikTok

TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

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.

TikTok Accommodation

TikTok 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