Senior Software Engineer (YDB Team)

<div class="content-intro"><p><strong data-stringify-type="bold">Why work at Nebius<br></strong>Nebius is leading a new era in cloud computing to serve the global AI economy. We create the tools and resources our customers need to solve real-world challenges and transform industries, without massive infrastructure costs or the need to build large in-house AI/ML teams. Our employees work at the cutting edge of AI cloud infrastructure alongside some of the most experienced and innovative leaders and engineers in the field.</p> <p><strong>Where we work<br></strong>Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&amp;D hubs across Europe, North America, and Israel. The team of over 1400 employees includes more than 400 highly skilled engineers with deep expertise across hardware and software engineering, as well as an in-house AI R&amp;D team.</p></div><div class="flex h-svh w-screen flex-col"> <div class="relative z-0 flex min-h-0 w-full flex-1"> <div class="relative flex min-h-0 w-full flex-1">&nbsp;</div> </div> <div> <p data-start="128" data-end="216"><strong>The YDB Development Team at Nebius is looking for Mid and Senior Software Developer with a strong expertise in C++.</strong></p> <p>YDB is an open-source product that serves two main purposes within Nebius:</p> <ul> <li>A&nbsp;<strong>scalable&nbsp;and&nbsp;reliable&nbsp;binary&nbsp;object&nbsp;storage&nbsp;foundation</strong>&nbsp;powering&nbsp;S3&nbsp;Object&nbsp;Storage,&nbsp;Filestore,&nbsp;Network&nbsp;Block&nbsp;Storage&nbsp;Tailored&nbsp;to&nbsp;process&nbsp;AI-&nbsp;related&nbsp;Workloads</li> <li>A&nbsp;<strong>distributed&nbsp;relational&nbsp;database&nbsp;and&nbsp;message&nbsp;broker</strong>&nbsp;supporting&nbsp;Nebius&nbsp;cloud&nbsp;operations&nbsp;such&nbsp;as&nbsp;IAM,&nbsp;Billing,&nbsp;Audit&nbsp;Trails&nbsp;and&nbsp;Logging</li> </ul> <h3 data-start="647" data-end="688">How You Will Change the World with Us</h3> <ul> <li>Adapt&nbsp;YDB&nbsp;to&nbsp;leverage&nbsp;modern&nbsp;hardware&nbsp;to&nbsp;its&nbsp;fullest&nbsp;potential:&nbsp;QLC&nbsp;NVMe&nbsp;drives,&nbsp;Dual&nbsp;800Gb/s&nbsp;network&nbsp;adapters,&nbsp;BlueField&nbsp;DPUs</li> <li>Maximize&nbsp;performance&nbsp;on&nbsp;widely&nbsp;used&nbsp;devices&nbsp;such&nbsp;as&nbsp;HDDs&nbsp;and&nbsp;TLC&nbsp;NVMe</li> <li>Reengineer&nbsp;YDB&nbsp;components&nbsp;with&nbsp;more&nbsp;efficient&nbsp;algorithms&nbsp;to&nbsp;solve&nbsp;complex&nbsp;system&nbsp;challenges</li> </ul> <h3 data-start="1011" data-end="1027">Requirements</h3> <ul> <li>5+&nbsp;years&nbsp;of&nbsp;experience&nbsp;in&nbsp;C/C++&nbsp;programming&nbsp;for&nbsp;highly&nbsp;loaded&nbsp;systems</li> <li>Understanding&nbsp;of&nbsp;core&nbsp;dumps,&nbsp;flamegraphs,&nbsp;and&nbsp;sanitized&nbsp;builds</li> <li>Experience&nbsp;developing&nbsp;high-performance,&nbsp;low-latency&nbsp;components</li> <li>Understanding&nbsp;of&nbsp;CPU&nbsp;caches,&nbsp;Modern&nbsp;CPU&nbsp;atomic&nbsp;operations&nbsp;and&nbsp;NUMA&nbsp;architectures</li> </ul> <h3 data-start="1430" data-end="1446">Nice to Have</h3> <ul> <li>Experience&nbsp;with&nbsp;on-disk&nbsp;data&nbsp;structures&nbsp;(LSM&nbsp;trees,&nbsp;B+&nbsp;trees)</li> <li>Hands-on&nbsp;experience&nbsp;with&nbsp;debugging&nbsp;and&nbsp;profiling&nbsp;tools&nbsp;such&nbsp;as&nbsp;perf,&nbsp;VTune,&nbsp;bpftrace,&nbsp;gdb</li> <li>Knowledge&nbsp;of&nbsp;storage-related&nbsp;algorithms&nbsp;(erasure&nbsp;coding,&nbsp;checksumming)</li> <li>Understanding&nbsp;of&nbsp;storage&nbsp;device&nbsp;internals&nbsp;(NVMe,&nbsp;HDD)</li> <li>Familiarity&nbsp;with&nbsp;Linux&nbsp;kernel,&nbsp;SPDK/DPDK,&nbsp;libaio,&nbsp;io_uring</li> <li>Knowledge&nbsp;of&nbsp;networking&nbsp;concepts&nbsp;and&nbsp;protocols&nbsp;(IP,&nbsp;TCP,&nbsp;UDP,&nbsp;DNS,&nbsp;ideally&nbsp;InfiniBand,&nbsp;RoCE/RDMA)</li> <li>Experience&nbsp;with&nbsp;Kubernetes&nbsp;and&nbsp;Grafana</li> <li>Track&nbsp;record&nbsp;of&nbsp;active&nbsp;participation&nbsp;in&nbsp;incident&nbsp;resolution</li> <li>Experience&nbsp;designing&nbsp;production-grade&nbsp;distributed&nbsp;storage&nbsp;components</li> <li>Knowledge&nbsp;of&nbsp;availability&nbsp;and&nbsp;durability&nbsp;calculations</li> </ul> <p><em>We conduct coding interviews as part of the process.</em></p> </div> </div><div class="content-conclusion"><p><strong>What we offer</strong>&nbsp;</p> <ul> <li>Competitive salary and comprehensive benefits package.</li> <li>Opportunities for professional growth within Nebius.</li> <li>Flexible working arrangements.</li> <li>A dynamic and collaborative work environment that values initiative and innovation.</li> </ul> <p><span data-contrast="auto">We’re growing and expanding our products every day. If you’re up to the challenge and are excited about AI and ML as much as we are, join us!</span></p></div>