# Jing Qian > Staff Software Engineer at LinkedIn Infrastructure Location: San Jose, California, United States Profile: https://flows.cv/jingqian1 • working experience of the cloud file system, distributed blob store, graph database, cloud synchronization/backup software • 10 years’ user mode, kernel mode software/algorithm development experience. • More than 10 years’ hand-on management experience. • Strong C/C++ programming experience, familiar with Java, JavaScript and Python. • Working experience of NoSQL and SQL database like PostgreSQL, LevelDB, SQLite, MySQL, MongoDB. • Working experience of Web Server, distributed storage(CEPH storage). • Expert at algorithm like SSD wear leveling, cache algorithm and RAID6 algorithm. • Cross platform application development experience on Windows, Linux and Mac. • Familiar with eMMC, SATA, ONFI/Toggle NAND, SCSI, PCI-e, NVMe protocols. • Familiar with Git/VM/Docker/JSON/XML etc. ## Work Experience ### Staff Software Engineer - Storage and Systems Infrastructure @ LinkedIn Jan 2021 – Present | Sunnyvale, CA June 2025 – Present Developing Northguard, LinkedIn’s next-generation streaming platform that enhances scalability, availability, and durability, while supporting seamless migration from Kafka. June 2024 ~ May 2025 Designed and developed Liquid, LinkedIn’s in-memory graph database, with a focus on the in-memory storage layer. Oct 2021 ~ May 2024 Developed Ambry, LinkedIn’s geo-distributed blob storage system, providing storage for customers and internal database backups, while improving its scalability and availability. ### Software Development Engineer (AWS - Neptune Graph Database) at Amazon @ Amazon Jan 2019 – Jan 2021 Worked on the storage layer of Amazon Neptune, a fully managed graph database service that supports both property graphs and RDF graphs, focusing on storage performance, durability, and transaction handling. ### Director of Engineering, Cloud File Services @ Latticework, Inc. Jan 2017 – Jan 2019 | 2210 O'Toole Ave San Jose, CA 95131 Led the team in designing and developing a cloud-distributed file system and a NAS versioning file system. Integrated performance tuning and debugging across cloud and NAS systems. ### Senior Staff Software Engineer @ Latticwork, Inc. Jan 2016 – Jan 2017 | 2210 O'Toole Ave San Jose, CA 95131 Designed and developed file synchronization and backup software to sync files between the cloud and local file systems across Windows, Mac, Linux, Android, and iOS platforms. ### Staff Manager, Software Engineering @ Marvell Semiconductor Jan 2010 – Jan 2016 | Santa Clara, California Worked on multiple storage products, including Solid State Drives (SSD), SATA, and SAS RAID controllers. Managed a team focused on firmware and Windows driver design and development. Contributed to the design and development of wear leveling algorithms and RAID algorithms. Oversaw ASIC validation efforts and addressed various ASIC issues. Was an expert in the eMMC protocol, with familiarity in ONFI/Toggle NAND, SATA, and SAS protocols. Communicated with customers to gather feature requirements and manage firmware releases. Gained extensive hands-on experience across these projects, with a background in Windows driver, firmware, and application development. ### Sr. Staff Software Engineer @ Marvell Semiconductor Jan 2005 – Jan 2010 | Santa Clara, CA Experienced in storage systems and low-level driver development. Worked on Windows SCSIport and Storport drivers, as well as Windows filter drivers to enhance storage device performance. Designed and developed SATA/SAS device drivers and implemented RAID5/RAID6 algorithms. Collaborated with the ASIC team to debug various ASIC-related issues. ### Senior Software Engineer @ Promise Technology Jan 2001 – Jan 2005 | Milpitas, California Developed a Windows application for RAID management and a web application for distributed RAID management based on the WBEM architecture. Ported the SNIA CIMOM server, implemented the CIM provider, and developed Windows and Linux JNI to interface with hardware devices. ### Software Engineer @ IBM, Shanghai, P.R.China Jan 2000 – Jan 2001 Developed the IBM China portal website (www.ibm.com.cn) using IBM RS6000 Servers. Led the "News" development group, overseeing both server-side and client-side code development. ## Education ### Master of Science (MS) in Computer Science Shanghai Jiao Tong University ### Bachelor of Science (BS) in Computer Science Shanghai Jiao Tong University ## Contact & Social - LinkedIn: https://linkedin.com/in/jing-qian-8181b834 --- Source: https://flows.cv/jingqian1 JSON Resume: https://flows.cv/jingqian1/resume.json Last updated: 2026-04-12