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TikTok · 22 hours ago

Senior Software Engineer, Ads Core Technology – Commercial Platform (CommercePack)

San Jose, CA

Full-time

Onsite

Senior Level

$187K/yr - $360K/yr

TikTok is the leading destination for short-form mobile video. As a Senior Backend Engineer in TikTok Ads Core, you will design and scale high-performance systems for ad delivery, solve complex challenges, and mentor junior engineers.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Lead the design, development, and optimization of high-concurrency backend services for global ad delivery

Identify and solve complex technical challenges in distributed systems, with a focus on scalability, performance, and fault tolerance

Collaborate across product, infrastructure, and data teams to deliver robust solutions that support new ad formats and business growth

Drive continuous improvements through code quality, architectural reviews, and technical mentorship

Contribute to the evolution of coding standards, operational practices, and internal technical tooling

Qualification

Backend programming languagesDistributed systems designHigh-availability servicesSystem-level optimizationObservability toolsCommunication skillsMentoring

Required

Strong computer science fundamentals and proven ability to deliver production-grade backend systems at scale

Proficiency in at least one backend programming language (Go, Java, Python, or C++)

Solid understanding of core infrastructure components such as MySQL, Redis, message queues, and Nginx, including experience in tuning for high-load environments

Experience designing and maintaining large-scale, distributed, high-availability services

Excellent communication and collaboration skills; able to lead initiatives and work cross-functionally in a global setting

Preferred

Deep expertise in Golang and system-level optimization

Prior experience in building and scaling ad delivery systems, recommendation engines, or other real-time systems with extreme concurrency

Experience with observability and troubleshooting tools for large-scale backend systems

Track record of driving large cross-team engineering initiatives

Passion for mentoring, setting technical direction, and driving team-wide improvements

Benefits

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

10 paid holidays per year

10 paid sick days per year

17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure)

Company

TikTok

Glassdoor3.4

TikTok is a short-form video entertainment app and social network platform. It is a sub-organization of ByteDance.

Founded in 2003

Los Angeles, California, USA

10001+ employees

https://www.tiktok.com

H1B Sponsorship

TikTok has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (979)

2024 (601)

2023 (387)

2022 (322)

2021 (133)

2020 (72)