427 jobs for “Systems Administrator”
Cloudflare London €89,000 – €122,000 pa
Lead the Egress team building and operating network software infrastructure that connects Cloudflare's products to any destination, spanning data planes and distributed control-plane services. You will hire and mentor a distributed engineering team, partner with Product and engineering leaders on roadmap, and own production reliability, on-call and incident response.
Cloudflare London
Lead a team of engineers building and maintaining Cloudflare's billing, payments, usage metering, aggregation, invoicing and revenue recognition systems, currently being rebuilt as a next-generation platform. The role spans technical execution, architecture for financial accuracy at scale, and mentoring, with close collaboration across product, finance, data science and operations.
Amazon London
Design and build real-time middleware and runtime software connecting industrial control hardware to AWS cloud services, including protocol integrations like OPC-UA, EtherCAT and Modbus. The role spans edge-to-cloud telemetry, latency budgets and on-hardware validation, working with hardware, controls and security engineers.
Amazon London
Hands-on security engineering role securing production AI systems deployed inside enterprise customer environments. You conduct design and code reviews, threat modeling and penetration testing for agentic workflows and RAG pipelines, and build security automation such as scanning tools, CI/CD gates and guardrail testing scripts. Work alongside FDE delivery pods, with up to 25% travel.
CrowdStrike United Kingdom
Serve as technical lead on front-page incident response engagements for Fortune 100 organisations, conducting intrusion investigations under outside counsel and performing host and network forensics across Windows, Mac and Linux. The role also involves cloud IR, malware analysis, remediation planning and communicating findings to executives, regulators and legal teams.
CrowdStrike United States US$140,000 – US$220,000 pa
Builds and operates core systems for the Falcon Complete team, designing reliable, scalable services that help security analysts triage and remediate threats at scale. Work spans Golang, microservices, data pipelines, Kafka, Kubernetes and cloud observability, with on-call rotations and close collaboration with analysts across the US and UK.
Databricks London
Customer-facing, billable engineering role building and productionizing data and AI solutions on the Databricks platform for emerging enterprise and digital native accounts. You own architecture and design decisions, implement end-to-end systems spanning data engineering, ML/AI and application development, and embed with customer teams from ICs to executives. Involves roughly 20% travel and contributing reusable accelerators, frameworks and best practices.
Databricks London
Customer-facing engineering role owning architecture and design decisions while building production-grade data, AI and application systems on the Databricks platform. You embed with client teams, from technical ICs to executives, delivering end-to-end pipelines, ML/AI model integration and reference architectures, with roughly 20% travel to customer sites.
Deerfoot Recruitment Solutions Didcot £700 – £900 pd
Architect and build multi-agent AI systems end-to-end, combining frameworks like LangGraph or Haystack with bespoke orchestration, state management and tool-calling logic. Embed LLMs and vision-language models into live reasoning, search and task-execution workflows, deploying across cloud and on-premises environments with monitoring, evaluation and guardrail tooling. Set technical standards for agentic AI within the team, working with a biotech and pharma customer.
Salt Search London £70,000 – £100,000 pa
A rapidly growing, well-funded AI technology company transforming the video security industry through computer vision, machine learning and real-time intelligence.They're expanding their London engineering team and seeking a talented Full Stack Software Engineer to build and scale their cloud-native AI...
Millgate Sheffield £55,000 – £60,000 pa
Senior escalation point covering solution design, project delivery and major incident management for clients and internal systems. Runs discovery workshops, produces designs and statements of work, and leads Microsoft 365, Azure, hybrid cloud, network and security deployments while mentoring engineers and supporting pre-sales.
Nigel Wright Group Sunderland £55,000 – £65,000 pa
Migrate and transform data from M&A and legacy systems into a proprietary Gateway SQL database, building and optimising ETL/ELT pipelines with SQL and Python. Work with ADF, Azure Databricks or Microsoft Fabric, handling data mapping, quality validation, troubleshooting and performance tuning. Collaborate with BAs, DBAs and developers in a regulated financial services environment, with DevOps and CI/CD involvement.
CoreWeave London
Designs and troubleshoots large-scale network architecture for AI cloud customers, spanning Kubernetes CNIs, BGP, VXLAN/EVPN, VPCs and HPC interconnects like InfiniBand and RoCE. Acts as an extended member of the Networking engineering team, leading customer workshops and proofs of concept while feeding field insights back into the product roadmap.
Reperio Human Capital Limerick, Ireland £94,956 – £120,853 pa
Lead a multi-disciplinary engineering team spanning embedded software, application development, DevOps and testing, shaping next-generation connected products. The role centres on software architecture for embedded C/C++ and RTOS, plus cloud/DevOps tooling such as Azure, Docker, Kubernetes and CI/CD, with test automation, secure development and Agile delivery. Suits a seasoned manager comfortable scaling teams through growth and change, ideally in regulated or IoT environments.
Intelligent Steps London £85,000 – £95,000 pa
Hands-on backend role building and operating Java microservices for a digital platform covering onboarding, order management, billing and notifications. You will define service boundaries and API contracts, migrate functionality from a monolith, and work with Kafka, PostgreSQL, Redis, Docker, Kubernetes and AWS alongside product, QA and DevOps colleagues.
