Cloud Computing Jobs

Amazon · London

Lead delivery of complex AWS cloud transformation projects from inception to completion, managing scope, budget, quality and governance. Bridge business requirements with technical solutions, facilitate engineering discussions, and manage senior stakeholders across customers, partners and internal teams. Also leads multidisciplinary technical specialists and drives risk resolution and best practices.

Amazon · London

Drive AWS cloud adoption across complex enterprises in healthcare and life sciences, building C-level relationships and executing strategic account plans to win net new customers. Partner with internal teams to design compliant, secure cloud solutions and guide customers through their transformation journey.

Cloudflare · London

Works across the database stack, from query planning and execution to transaction processing and durable storage, shaping consistency, durability and latency guarantees. Defines how concurrent transactions become visible and how durable state is recovered, validating systems with deterministic simulation and production evidence. Includes on-call rotation and mentoring.

Cloudflare · London

Builds and operates a shared storage platform underpinning R2, Workers KV and Durable Objects, writing automation and operator tooling for provisioning, expanding, upgrading and decommissioning storage hardware, distributed databases and object storage clusters. Involves fleet reliability engineering, observability, incident response and on-call, with AI tools used to speed debugging and reduce toil.

Nebius · London

Builds and evolves the open-source YDB platform, a distributed storage and relational database system spanning tens of thousands of nodes and hundreds of petabytes. Work includes redesigning core components for QLC NVMe, 800 Gb/s NICs, Arm-based NVIDIA GB300 hosts and SMR HDDs, plus erasure coding, recovery and silent-corruption prevention. Merged changes typically reach production clusters within weeks.

Nebius · London

Builds and operates large-scale indexing systems and data pipelines for an agent-native search platform, handling tens of gigabytes per second across petabyte-scale datasets. Focuses on storage formats, compaction, freshness, observability and cost optimisation, working with Go alongside runtime and ML teams.

Nebius · Madrid, Spain

Owns performance tuning of GPU clusters and InfiniBand fabrics, troubleshooting root causes across GPU, network and KVM/QEMU layers. Integrates new GPU hardware into Kubernetes, QEMU and KVM stacks while building automation for proactive fault detection and resolution in large-scale HPC environments.

Nebius · London

Develops and extends the QEMU/KVM virtualization stack, optimising I/O for emulated disk and network devices, distributing resources between VMs and hardening the hypervisor against untrusted code. Works closely with the open-source community on upstream patches, with a focus on low-level security and performance.

Nebius · London · US$170,000 – US$300,000 pa

Owns performance tuning and troubleshooting of GPU clusters and InfiniBand fabrics, integrating new GPU hardware into Kubernetes, QEMU and KVM stacks. Builds automation for proactive fault detection and resolution across multi-GPU HPC environments, working on low-level Linux kernel, PCIe and device emulation problems.

Nebius · London

Optimise GPU clusters and InfiniBand fabrics on a hyperscaler AI cloud platform, tuning performance and troubleshooting root causes across Kubernetes, QEMU and KVM. Integrate new GPU hardware, build automation for proactive fault detection, and work on multi-GPU HPC environments alongside hardware virtualisation and device emulation specialists.

Nebius · London

Ensure fault-tolerance, scale and uninterrupted operations for a full-stack AI cloud platform, using cutting-edge cloud technology to solve infrastructure problems and improving CI/CD processes. Works with Go, Python or C++, Unix systems, networking, and containerization and configuration tooling such as Kubernetes, Helm, Terraform, Docker, Ansible and Salt. Coding interviews are part of the process.

Nebius · Amsterdam, Netherlands; Germany; United Kingdom

Builds and operates a production Managed PostgreSQL service for AI workloads, spanning Go control-plane automation, Postgres internals tuning, and migration tooling off RDS, Cloud SQL and self-managed clusters. Also drives vector search (pgvector) and runs the service like an SRE, handling SLOs, incidents and customer escalations.

Nebius · Amsterdam, Netherlands; Berlin, Germany; United Kingdom

Builds the Capacity and Quota Management control plane that decides who gets compute, when, and how much. Work spans a GPU reservation engine with rebalancing and auto-reclamation logic plus a quotas control plane handling customer requests and resource distribution algorithms, all exposed via APIs. High-ownership role defining how the system matures.

Nebius · London

Owns reliability, performance and observability of a large-scale inference platform serving text, vision and audio models. Day-to-day work spans telemetry pipelines, Kubernetes autoscaling, Terraform modules and request-routing resilience, with incident response and post-mortems. Requires deep Kubernetes, Prometheus, Grafana and IaC fluency plus GPU workload experience.

Amazon · London

Embedded with strategic customers to own end-to-end generative AI model workstreams, from defining evaluation bars and preparing data through post-training, RL, and inference optimization to production deployment. Customizes open-weight and foundation models, builds distributed training and inference systems, and tunes workloads on AWS Trainium, with up to 25% travel.