427 jobs for “Systems Administrator”
Cloudflare London
Owns the request-facing layer of Cloudflare's R2 object storage: the S3-compatible API gateway handling authentication, routing, rate limiting and error handling for every put, get, list and delete. Builds and operates high-throughput services on Cloudflare Workers and Kubernetes, with on-call incident response and heavy use of AI tooling in the daily workflow.
Cloudflare London
Lead a distributed, customer-obsessed team building a developer observability platform that makes telemetry discoverable and actionable. You set technical and product vision with PM and engineers, own SLOs, incident response and technical debt, and work cross-functionally to instrument high-volume primitives like Workers, Agents and Durable Objects. The role is deeply hands-on and customer-facing, with a strong emphasis on hiring, mentoring and raising the engineering bar.
Amazon London
Embeds inside a strategic enterprise customer to design, build, deploy and run AI-powered production systems alongside their engineering team. Owns technical strategy for complex multi-workstream AI programs, architecting multi-agent orchestration, enterprise retrieval and decision intelligence platforms, and defining operational standards and evaluation frameworks. Also mentors junior engineers and builds reusable accelerators, with 30–50% travel required.
Amazon London
Owns the architecture of real-time middleware and controls connecting industrial hardware to AWS cloud services, spanning embedded/edge controllers and distributed systems. Sets multi-quarter technical strategy for industrial protocol support, edge-to-cloud data contracts, and real-time correctness, while mentoring engineers and leading cross-team efforts.
CrowdStrike United Kingdom
Senior technical consultant conducting front-page incident response investigations for Fortune 100 clients, hunting adversaries across large data sets and performing host and network forensics on Windows, Mac and Linux. Works under project leadership and outside counsel, producing written and verbal findings for executives, regulators and legal counsel.
CrowdStrike United Kingdom
Lead incident response engagements, conducting intrusion investigations under outside counsel and performing host, network and cloud forensics across Windows, Mac and Linux. The role also involves basic malware analysis, threat hunting across large datasets, and delivering written and verbal findings to customer management, regulators and legal counsel.
Databricks London
Customer-facing, billable role building and productionising data and AI solutions on the Databricks platform. You own architecture and design decisions, implement end-to-end systems across data engineering, ML/AI and application development, and embed with client teams from ICs to executives. Involves around 20% travel to customer sites.
Experis London £90,000 – £115,000 pa
Design, build and operate core platform services powering portfolio analytics and risk calculations, developing Python-based APIs, cloud-native infrastructure and orchestration frameworks for batch and on-demand workloads. Combines hands-on engineering with technical leadership, mentoring the team and embedding security, governance and observability across containerised, distributed compute environments.
Databricks London
Embed with strategic enterprise customers to design, build and productionise custom fullstack data and AI applications on the Databricks Data Intelligence Platform. You own architecture and end-to-end delivery across data engineering, ML/AI integration and user-facing interfaces, partnering with Sales, Product and Field Engineering. Expect up to 50% travel to client sites.
Langham Recruitment United Kingdom £450 – £500 pd
Hands-on development and customisation of Dynamics 365 and Dataverse solutions on a six-month transformation programme, building C# plugins, JavaScript/TypeScript functionality, Power Automate flows and Power Apps components. The role also covers integrations with business systems and REST APIs, plus Azure Functions, Logic Apps, Service Bus, SQL and Azure DevOps CI/CD, working alongside a D365 & Integration Solution Architect.
The Business Connection London £130,000 – £150,000 pa
Designs and scales a unified observability platform using Prometheus, Grafana, Loki, OpenTelemetry and Tempo/Jaeger for satellite constellations, ground station networks and deep-space communications. Defines SLOs, SLIs and error budgets, automates infrastructure with Terraform and ArgoCD, and leads incident response across Kubernetes and multi-cloud environments.
Nebius London
Builds and deploys ML models for retrieval, reranking and search relevance, including embedding models and cross-encoders, in a production agent-native search platform. Owns data, training and evaluation pipelines plus ML platform work such as Kubernetes orchestration, GPU scheduling and low-latency inference optimisation.
Team Energy Loughton £27,500 – £30,000 pa
Join an agile cross-functional team building large-scale enterprise software for UK energy suppliers, developing and maintaining Java and SQL applications, APIs and business services. You'll write automated tests, take part in code reviews, and gain exposure to DevOps, CI/CD, cloud and container technologies while supported by experienced engineers.
VIQU IT London £600 – £700 pd
Joining a central cloud engineering team, you will design, build and improve a Cato Network environment, combining cloud infrastructure with SASE, SD-WAN and Zero Trust Network Access. The role involves automation, Infrastructure as Code, CI/CD practices and supporting application migration to cloud-native architectures across a large enterprise.
Adria Solutions Manchester £70,000 – £85,000 pa
Maintain and enhance existing production applications while helping design and build a new platform, with a strong backend focus. Work across TypeScript, Node.js and React plus AWS infrastructure such as Lambda, ECS/Fargate, DynamoDB and SQS, collaborating through paired programming and taking ownership of performance, reliability and scalability.
