Senior Software Development Engineer, Storage Engine

Location:

San Jose

Team:
Technology

Employment Type:

Regular

Job Code: A249395A

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About the Team:
The Byte Dance Database Lava Store team builds and maintains Byte Dance's purpose-built local storage engine for large-scale cloud services. Working at the intersection of storage engines, databases, file systems, and performance engineering, the team solves highly write-intensive, latency-sensitive, and cost-sensitive infrastructure problems that general-purpose systems cannot fully address. The team combines systems research with end-to-end production ownership: it studies real workload patterns from database, key-value, and stream-processing systems, turns those insights into practical storage innovations, and validates them in production at massive scale.

Its work spans LSM-based engine design, KV separation, garbage collection, WAL-oriented storage paths, append-optimized file systems, caching, and tail-latency optimization. Lava Store has already been deployed at very large scale, with over 100,000 running instances, more than 100 PB of stored data, and over 2 billion requests per second, reflecting the team's focus on building simple, robust, and cost-effective infrastructure with measurable real-world impact.

• - Participate in the design and implementation of high-performance KV storage engines and file systems for large-scale distributed storage & database system backends;
• - Explore the design and evolution of next-generation KV storage engine architectures to ensure low latency and high throughput;
• - Deeply understand storage requirements across business scenarios, and collaborate with business teams to find the most suitable storage solutions.

• - Bachelor's degree or higher in Computer Science, Computer Engineering, Electrical Engineering or related majors;
• - Strong problem analysis, conceptual abstraction and design skills; proficient in C/C++, familiar with at least one of Python / Shell or similar languages;
• - Proficient in systems programming, including system calls and library functions, network/multithreaded programming models, debugging, and IO performance tuning tools and techniques;
• - In-depth understanding of storage system architectures and principles, such as LSM Tree, file systems (ext4/bluefs), etc.;
• - Solid understanding of distributed systems fundamentals, including consensus, replication, consistency models, and fault tolerance;
• - Excellent ability to identify and solve problems, good communication skills, team collaboration spirit, and a strong desire to learn new technologies.

• - PhD 's degree or higher in Computer Science, Computer Engineering, Electrical Engineering or related majors;
• - 5 years experience with asynchronous programming models and event-driven architectures, including callbacks, futures/promises, and coroutines;
• - Prior development experience in any of the following: large-scale distributed storage / caching / database systems / single-node KV storage engines / single-node file systems;
• - Familiarity with one or more common open-source projects such as RocksDB / LevelDB / Redis / Memcached / Cachelib;
  Prior RocksDB development experience is a plus;
• - Prior development experience with storage-compute disaggregation architectures is a plus.

The base salary range for this position in the selected city is $218400 - $387600 annually.

Compensation may vary outside of this range depending on a number of factors, including a candidate’s qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to 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, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.