Backend Software Engineer

Backend Backend Software Engineer (IM Cloud) - TikTok - Singapore **Location**: Singapore Employment Type: Regular Job Code: A123701A **Responsibilities**: We are the TikTok IMCloud team, the core infrastructure group responsible for TikTok's entire global Instant Messaging (IM) system. Our mission is to build and operate the foundational backend services that enable billions of users to connect reliably, securely, and efficiently. We are responsible for the end-to-end infrastructure of the TT IM system, including core messaging path design, global multi-region architecture, large-scale system stability, and continuous performance and cost optimization. **Responsibilities**: 1. Design, build, and maintain the high-availability, low-latency, and large-scale infrastructure for TikTok's global IM system. 2. Lead the design, optimization, and implementation of the core messaging delivery path to enhance system performance and efficiency. 3. Develop and refine the global multi-region architecture to ensure a seamless, reliable experience for users worldwide. 4. Drive system-wide stability and reliability engineering, including fault tolerance, disaster recovery, load balancing, and capacity planning. 5. Focus on service optimization, including performance tuning, resource management, and cost optimization. 6. Collaborate with product, client, and other cross-functional teams to deliver high-quality, scalable backend solutions. **Qualifications**: **Minimum Qualifications**: 1. BS/MS Degree in Computer Science or a related technical field. 3. Extensive system design experience with a deep understanding of distributed systems, data structures, and algorithms. 4. Strong familiarity with common storage and middleware components, such as relational databases (e.g., RDS), NoSQL/Key-Value stores, and message queues (MQ). **5. Proficient in at least one of the following languages**: Go, Python, Java, or C++. 6. Excellent team communication and collaboration skills. **Preferred Qualification**: 1. Minimum 3 years of relevant work experience in a large-scale internet/tech company. 2. Hands-on experience with performance tuning, reliability engineering, or cost optimization for cloud-native services. 3. Experience with building and managing infrastructure for large-scale IM or other real-time communication systems. Job Information 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.