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About the Role
The YDB Development Team at Nebius is looking for Mid and Senior Software Developers with strong expertise in C++. YDB is an open-source product serving as a scalable and reliable binary object storage foundation and a distributed relational database and message broker for Nebius cloud operations.
Responsibilities
- Adapt YDB to leverage modern hardware to its fullest potential: QLC NVMe drives, Dual 800Gb/s network adapters, BlueField DPUs
- Maximize performance on widely used devices such as HDDs and TLC NVMe
- Reengineer YDB components with more efficient algorithms to solve complex system challenges
Requirements
- 5+ years of experience in C/C++ programming for highly loaded systems
- Understanding of core dumps, flamegraphs, and sanitized builds
- Experience developing high-performance, low-latency components
- Understanding of CPU caches, Modern CPU atomic operations and NUMA architectures
- Experience with on-disk data structures (LSM trees, B+ trees)
- Hands-on experience with debugging and profiling tools such as perf, VTune, bpftrace, gdb
- Knowledge of storage-related algorithms (erasure coding, checksumming)
- Understanding of storage device internals (NVMe, HDD)
- Familiarity with Linux kernel, SPDK/DPDK, libaio, io_uring
- Knowledge of networking concepts and protocols (IP, TCP, UDP, DNS, ideally InfiniBand, RoCE/RDMA)
- Experience with Kubernetes and Grafana
- Track record of active participation in incident resolution
- Experience designing production-grade distributed storage components
- Knowledge of availability and durability calculations
- Coding interviews are part of the process.
Skills
- C++
- C/C++ programming
- Core dumps
- Flamegraphs
- Sanitized builds
- High-performance component development
- Low-latency component development
- CPU caches
- Modern CPU atomic operations
- NUMA architectures
- On-disk data structures
- LSM trees
- B+ trees
- Debugging tools
- Profiling tools
- perf
- VTune
- bpftrace
- gdb
- Storage algorithms
- Erasure coding
- Checksumming
- Storage device internals
- NVMe
- HDD
- Linux kernel
- SPDK/DPDK
- libaio
- io_uring
- Networking concepts
- Networking protocols
- IP
- TCP
- UDP
- DNS
- InfiniBand
- RoCE/RDMA
- Kubernetes
- Grafana
Experience Level
- Mid
- Senior
Benefits
- Competitive compensation
- Career growth and learning opportunities
- Flexibility and ownership
- Collaborative and innovative culture
- Opportunity to work on impactful AI projects
- International environment and talented teams
About the Company
- Nebius is leading a new era in cloud infrastructure for the global AI economy.
- We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.
- Built by engineers, for engineers.
- From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.
- Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel.
- Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D.
Equal Opportunity
- Nebius is an equal opportunity employer.
- We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment.
- We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.
- Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire.
- If you need accommodations during the application process, please let us know.