Senior Backend Engineer at Nebius

Why work at Nebius 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. Where we work Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&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&D team. About Tavily Team Tavily team is building the infrastructure layer for agentic web interaction at scale. Our API is designed from the ground up to power Retrieval-Augmented Generation (RAG) and real-time reasoning in AI systems. By connecting LLMs to high-quality, trustworthy web content, we help developers build agents that are not only intelligent - but also informed. We work with some of the most innovative teams in AI - from small startups shaping the ecosystem to the largest enterprises deploying AI at scale. Whether it’s powering sales assistants, research copilots, or internal knowledge tools, we’re the missing link between LLMs and the real world. The Role: Senior Backend Engineer (Tavily) We're looking for a Software Engineer to join our core engineering team and help build the infrastructure behind one of the fastest-growing AI APIs. You'll work on systems that handle massive scale across a distributed microservices architecture running on AWS. You'll ship fast, take ownership of critical systems, and solve hard infrastructure problems as we grow. This is a great role for an engineer who loves building ambitious systems from scratch, and wants to tackle the kind of scale and complexity challenges typically reserved for much larger companies. What You’ll Do • Design and build high-performance distributed systems • Design and implement backend infrastructure and API endpoints • Build and optimize real-time data pipelines that process billions of events per day across distributed queues and stream processors • Improve performance, monitoring, and reliability across the stack • Own core systems and contribute to key architectural decisions • Help shape a strong engineering culture focused on velocity and quality What You Bring • 5 years of professional software engineering experience • Strong backend development skills • Proven experience designing and operating large-scale, distributed systems, with a solid understanding of API design, reliability, and performance at scale • Hands-on expertise with AWS infrastructure and cloud-native services, bringing practical knowledge of deploying and managing services in real-world environments • Comfortable in a fast-paced startup environment with lots of ownership • Strong sense of ownership and accountability over outcomes • Curiosity about LLMs, retrieval and the future of AI systems, with a drive to stay at the forefront of new technology • Based in Tel-Aviv or open to relocating Nice To Have • Familiarity with DevOps practices, including CI/CD pipelines, infrastructure as code, Kubernetes orchestration, and modern monitoring tools What we offer • Competitive salary and comprehensive benefits package. • Opportunities for professional growth within Nebius. • Flexible working arrangements. • A dynamic and collaborative work environment that values initiative and innovation. 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!