Join us as we work together to inspire creativity and enrich life around the globe.
Responsibilities
About the Team Join ByteDance's Redis Family team, where we build and operate AI-native distributed KV caching and memory systems powering ByteDance's global infrastructure. Beyond traditional caching, we are evolving toward a unified Memory Infrastructure Layer that supports high-performance Redis-compatible KV systems, persistent and tiered storage engines, LLM KV Cache acceleration infrastructure, and AI-aware memory services. Our systems serve mission-critical scenarios at massive scale — recommendation, search, ads, e-commerce, messaging, live streaming, and emerging AI-native applications — with strict requirements on availability, latency, throughput, global deployment, and cost efficiency. Responsibilities - Design and develop next-generation Redis Family core systems, including distributed KV caching, persistent memory storage, LLM KV cache infrastructure, and AI-aware memory services. - Build planet-scale reliability, leading or contributing to HA architecture, failure isolation, multi-AZ/multi-region disaster recovery, and large-scale stability engineering for always-on business workloads. - Architect and optimize multi-tier memory systems (in-memory / SSD / shared storage), reducing read/write amplification and improving tail latency under extreme concurrency. - Build a production-grade ecosystem, including automated orchestration operations (provisioning, scaling, placement, scheduling) and monitoring systems (tracing, profiling, incident response runbooks). - Implement and evolve capabilities such as Bulkload, backup & restore, point-in-time recovery, tiered storage, and integration with upstream/downstream data systems to enrich data ecosystems. - Research new hardware and new technologies, evaluate and land improvements using ZNS SSD, io_uring, RDMA/CXL, and "AI+DB" directions in production.
Qualifications
Minimum Qualifications: - BS or a higher degree in Computer Science or related fields, or equivalent practical experience. - Proficiency in one or more programming languages (C, C++, Java, Go, Python, Rust) with strong coding skills in a Linux environment. - Solid fundamentals in distributed systems, database/storage principles, networking, and multi-threaded programming; strong debugging and performance analysis skills (profiling, tracing, flame graphs, lock contention, tail latency). - Hands-on experience building or operating large-scale distributed systems (high QPS, high concurrency, strict SLO/SLA), with proven ability to improve stability, performance, and cost. - Clear and logical thinking, coupled with a product-oriented mindset, self-driven initiative, and strong project management skills. Preferred Qualifications: - 3+ years in database internals/storage engine/cache system development, or equivalent large-scale infrastructure experience. - Familiarity with or contributions to systems such as Redis, Tair, MemoryDB, RocksDB, pika, TiDB, etc. - Strong knowledge of distributed consensus algorithms, with experience in database kernel development. - Experience with Linux kernel-level performance tuning, networking stack optimization, or IO subsystem. - Familiarity with RDMA, CXL, ZNS SSD, or modern storage hardware. - Interest or experience in applying AI techniques to database systems (e.g., cost modeling, workload prediction, auto-tuning). - Experience building or optimizing LLM inference KV cache, memory reuse strategies, or distributed attention state management. - Familiarity with mem0-style memory abstraction, RAG memory systems, or session/branch-based contextual storage.
Job Information
【For Pay Transparency】Compensation Description (Annually)
The base salary range for this position in the selected city is $129960 - $246240 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.
For Los Angeles County (unincorporated) Candidates:
Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:
1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;
2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and
3. Exercising sound judgment.
About Us
Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.
Why Join ByteDance
Inspiring creativity is at the core of ByteDance's mission. Our innovative products are 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 enrich life - a mission we work towards every day.
As ByteDancers, 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. 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
ByteDance 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 ByteDance, our mission is to inspire creativity and enrich life. 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.
Reasonable Accommodation
ByteDance is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at https://tinyurl.com/RA-request
