Backend Engineer
TikTok
Backend Engineer
TikTok
Short-form video platform with ads
We own TikTok’s core account, device, session, and user data systems, serving billions of users globally with built-in security requirements one of the most scalable and high-performance systems in the industry (100 millions QPS). Here, you’ll take on several defining challenges: Extreme Performance: Optimize distributed architecture, storage engines, and traffic routing to ensure rock-solid stability under massive global scale. Security by Design: Embed security into every layer of the system, from architecture to code, to combat fraud and protect billions of user accounts. We thrive on solving hard problems—whether it’s designing high-performance auth protocols, building risk control systems, or breaking through distributed consistency bottlenecks. Every line of code you write will directly impact hundreds of millions of users. Account team is highly engineering-driven, we want to foster a culture of innovation, technical depth, and elegant problem-solving. If you’re excited about all of these, it's the right place. We also actively leverage cutting-edge AI technologies to solve complex engineering challenges in performance optimization, system reliability, security, and beyond. Responsibilities: 1. Design, test, deploy and maintain backend services and core components of distributed systems. 2. Conduct system designs and code reviews. 3. Collaborate with other engineering teams to elevate technology and consistently apply best practices. 4. Constantly evaluate and improve efficiency, scalability, and stability of our systems.
Minimum Qualifications: 1. BS degree in Computer Science, Electrical Engineering, Computer Engineering or related areas. 2. Experience in one or more programming languages such as Go, Java, C++, Python etc. 3. Abilities to quickly ramp up on new technologies, tools and domain knowledge. 4. Experience in backend server development and database solutions. Preferred Qualifications: 1. Good problem-solving, analytical thinking capabilities and exceptional attention to details. 2. Good communication and collaboration skills.
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 is a short-form mobile video platform that lets people create, discover, and share quick videos. Users upload vertical clips, edit them with built-in tools, and browse a personalized feed powered by an algorithm that highlights relevant content. Advertisers can use in-feed ads, branded hashtags, and the Business Center to plan and measure campaigns, making it easy for brands to reach a global audience. Its goal is to inspire creativity and bring joy by helping people express themselves and by connecting brands with a wide audience.
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