Lead Backend Development Engineer

About Us Established in 2018, Bybit is one of the world’s leading cryptocurrency exchanges and digital financial platforms, serving over 80 million users across more than 200 countries and regions. Powered by world-class technology and a user-first mindset, Bybit delivers a seamless ecosystem across trading, payments, wealth management, custody, institutional services, and Web3 — connecting users to the future of digital finance. Our core values define how we build. We listen, care and improve to create products and experiences that put users first. Backed by a global team of ambitious builders, problem-solvers, and innovators, we foster a high-performance and fast-moving environment where talent is empowered to drive real impact at the global scale. Supported by 24/7 multilingual customer service and a strong commitment to innovation, we are shaping the future of finance through technology, collaboration, and bold execution. Today, Bybit is recognized as one of the most trusted and transparent platforms in the digital asset industry, continuing to expand its global presence while building the infrastructure for the next generation of financial services. Responsibilities Design, develop, and optimize the user account system (registration/login/user profiles/account management); Design and maintain the account security framework; Lead core development of user permission systems, session management, and authentication/authorization modules including OAuth/SSO; Analyze system bottlenecks, resolve complex technical issues, and perform performance tuning for high-concurrency user request scenarios. Requirements Bachelor's degree or above in Computer Science or a related field; 5+ years of backend development experience with proficiency in Golang; Proficient in AI-driven development using Claude Code; Experienced in developing gRPC/HTTP APIs, with a solid understanding of concurrency principles and high-concurrency user system development; Familiar with distributed systems; proficient in mainstream service frameworks and message middleware such as Kafka and gRPC, with an understanding of their underlying principles; Strong logical thinking and business comprehension skills; Experience with Docker and Kubernetes automation or DevOps practices is a plus. Why Join Us At Bybit, we are committed to fostering a supportive and enriching work environment. Our benefits include: - Study Growth Fund: We support your professional development and continuous learning. - Internal Events: Participate in regular team-building activities, workshops, and events designed to promote collaboration and innovation. - Global Collaboration: Be part of a diverse, international team, working alongside colleagues from around the world. - Career Advancement: Access opportunities for growth and advancement within a rapidly expanding global company. - Internal Mobility: Grow with us- Your long-term development is important to us. We offer internal job opportunities to help build your career path.