Senior C++ Engineer for High-Performance AI Cloud Systems

Academic Key; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Competitive compensation

Career growth

Flexible work

International environment

Job summary

Nebius is seeking mid to senior Software Developers with strong C++ expertise to push a cloud-scale storage and database platform. You will work on high-performance, low-latency components across storage, networking, and distributed systems, optimizing for modern hardware and scale.

Join a global engineering team to drive performance improvements, profiling, and debugging, while contributing to an open-source family of projects and core Nebius services.

Qualifications

• 5+ years of C/C++ in high-load systems.
• Experience with debugging and profiling tools.
• Understanding of CPU caches, NUMA and atomic operations.
• Familiarity with storage-related algorithms and on-disk data structures.
• Knowledge of Linux kernel, SPDK/DPDK, libaio, io_uring.

Responsibilities

• Adapt Nebius YDB to leverage modern hardware for higher performance.
• Reengineer components with efficient algorithms to solve system challenges.
• Collaborate across teams to optimize storage and network paths.

Skills

C/C++ high-performance

Profiling tools

Linux kernel

SPDK/DPDK

Networking basics

NUMA architectures

GDB

Tools

perf

VTune

gdb

bpftrace

io_uring

Job description

Nebius is seeking mid to senior Software Developers with strong C++ expertise to push a cloud-scale storage and database platform. You will work on high-performance, low-latency components across storage, networking, and distributed systems, optimizing for modern hardware and scale.

Join a global engineering team to drive performance improvements, profiling, and debugging, while contributing to an open-source family of projects and core Nebius services.