Top Infrastructure Engineer Jobs in London

Manage, monitor, support, test, and troubleshoot Trader Voice infrastructure in an enterprise financial-services environment. Provide L3 engineering, health checks, release certification, production change support, vendor coordination, controls compliance, and SLA delivery. The role requires deep expertise in Trader Voice platforms, SIP, VoIP telephony, virtualization, databases, Cisco telephony, collaboration systems, private wires, Hoot Networks, and voice recording technologies.

Leads enterprise-scale Microsoft Hyper-V infrastructure engineering across global data centers. Designs resilient clusters, automates provisioning and compliance with PowerShell and DSC, develops C#/.NET orchestration services, benchmarks performance, troubleshoots full-stack infrastructure issues, evaluates server hardware, remediates vulnerabilities, documents architectures, and mentors engineers. The role also promotes validated, auditable use of enterprise AI capabilities in infrastructure operations.

Designs, automates, operates, and hardens enterprise-scale Hyper-V and VMware VCF virtualization platforms across global data centers. Responsibilities include cluster architecture, provisioning, patching, performance analysis, full-stack troubleshooting, capacity planning, vulnerability remediation, production change management, CI/CD automation, documentation, and mentoring. The role also promotes validated, auditable AI-assisted infrastructure engineering practices.

Lead infrastructure engineering for critical market data platforms: provide production support, implement changes, lead architecture and automation workstreams, validate AI-assisted recommendations, ensure performance, resilience and data quality, and collaborate across platforms to modernize and stabilize trading market data infrastructure.

Designs, deploys, and supports high-performance, low-latency networks and data center connectivity. Automates network configuration and observability using Ansible and Terraform, supports broader infrastructure, manages vendors and circuit providers, and plans data center work. The role requires coding ability, network and systems administration experience, routing and switching knowledge, Linux proficiency, firewall automation, troubleshooting skills, and familiarity with monitoring and testing tools.

Leads enterprise proxy, perimeter, and SSE/SASE security engineering across US operations. Designs and operates Zero Trust, identity-aware proxy, secure gateway, egress, segmentation, and cloud interconnect architectures. Owns roadmap execution, governance, remediation, lifecycle modernization, incident management, observability, and resiliency. Supervises engineers, establishes reusable security patterns, coordinates cross-functional delivery, and promotes secure, responsible AI-assisted engineering practices.

Own and operate Humanoid’s cloud data platform, including infrastructure, software services, data workflows, CI/CD, monitoring, security, reliability, and recovery. Translate internal engineering needs into technical work, lead external contractors, review deliverables, and ensure implementations are tested, documented, and production-ready. The role combines hands-on platform, cloud, full-stack, and data engineering with technical delivery leadership.

Provides hands-on data centre and infrastructure support across TJX UK and European sites. Responsibilities include installing, relocating, upgrading, and decommissioning servers, network equipment, storage, power, and cabling; performing rack-and-stack, audits, asset management, maintenance, and troubleshooting; coordinating vendors; supporting incidents, changes, migrations, and technology refreshes; and maintaining operational documentation and compliance. Regular travel to data centres, offices, processing centres, and other facilities is required.

Leads the optimization, maintenance, and reliability of enterprise infrastructure at a manufacturing plant. Responsibilities include managing Hyper-V environments, failover clusters, servers, storage, Cisco networking and firewalls, VLAN segmentation, wireless systems, and SolarWinds monitoring. Serves as a Tier 3 escalation point, provides onsite production support, performs maintenance outside regular hours, and participates in on-call support for critical incidents.

Own and operate the internal platform for engineering: design and run Kubernetes and bare-metal infrastructure, automate via Terraform/Ansible and scripting, build CI/CD and self-service tooling, optimise networking and storage for ML/hardware workloads, implement monitoring and security (IAM, secrets, threat detection), and drive reliability and continuous improvement.

Own and improve AWS infrastructure, Kubernetes clusters, databases, networking, security, observability, and cloud costs. Participate in on-call support, incident response, maintenance, and SLA improvement. Build CI/CD pipelines, automated testing, rollback processes, and developer tooling while documenting infrastructure and supporting SOC2 compliance.

Leads the design, implementation, maintenance, and continuous improvement of resilient infrastructure automation for algorithmic trading. Provides Linux-based electronic trading platform expertise, partners with development and infrastructure teams, manages technical risk, and supports scalable systems. The role includes technical leadership, mentoring engineers and SREs, full-lifecycle ownership, incident review, and adoption of SRE practices. Advanced Python, Unix/Linux, infrastructure automation, debugging, CI, Git, Jenkins, and software engineering expertise are required.

Leads the design, deployment, operation, and optimization of enterprise network security platforms across AWS and on-premises environments. Builds infrastructure automation with Terraform, Python, and Ansible; integrates security controls into CI/CD pipelines; resolves complex infrastructure issues; and supports resilience, compliance, governance, and incident management. Acts as a technical authority, mentors engineers, collaborates with cloud and cybersecurity teams, and helps define network security strategy and standards.

Own the stability and operation of secure, large-scale production infrastructure. Responsibilities include observability, alerting, configuration management, upgrades, incident response, software deployments, workload migrations, troubleshooting, performance tuning, and automation. The role partners with engineering and delivery teams on system design, uses production code and container orchestration, and participates in an on-call rota approximately every five to six weeks.

Leads requirements capture, telecom tendering, and end-to-end network connectivity solution design across EMEA. Develops resilient architectures, high- and low-level designs, network diagrams, and governance documentation. Evaluates vendors, manages supplier performance and SLAs, embeds operational risk controls, and supports regional network strategy. Partners with business stakeholders, engineering teams, sourcing groups, and telecom providers while mentoring engineers and evaluating emerging connectivity technologies.

Lead cybersecurity infrastructure response for enterprise customers during high-impact incidents. Responsibilities include Active Directory and Entra ID containment and recovery, infrastructure evidence collection and analysis, privileged access assessment, post-breach hardening, technical prioritization, customer briefings, documentation, and mentoring. The role supports hybrid on-premises and cloud environments and requires flexibility for non-standard hours and UK security screening.

Own and operate globally distributed GPU infrastructure for model training, evaluation, and serving. Responsibilities include running Kubernetes GPU clusters, optimizing scheduling and placement, repairing unhealthy nodes, managing cloud capacity, and debugging Linux, hardware, storage, and networking failures. The role also involves designing GPU clusters, collaborating with research and product teams, and improving compute reliability and utilization.

Own and operate GPU infrastructure for model training, evaluation, and serving. Responsibilities include running Kubernetes GPU clusters, improving scheduling and placement, repairing unhealthy nodes, managing cloud capacity, and debugging Linux, GPU, storage, and networking failures. The role partners with infrastructure, research, product, and cloud-provider teams to build globally distributed compute systems.

Lead infrastructure software engineering across design, development, testing, and troubleshooting. Build secure, resilient infrastructure patterns primarily in Red Hat Linux, implement Infrastructure as Code, improve automation and operational stability, and support SDLC tooling and CI/CD practices. Evaluate vendor and architectural solutions, guide responsible use of AI-assisted development tools, and contribute hands-on expertise within an agile team.

Operate and improve large-scale NVIDIA GPU clusters across bare-metal and rented capacity. Build automation for provisioning, health checks, remediation, monitoring, scheduling, and capacity management. Own Linux images, drivers, CUDA, containers, networking, storage, and Slurm. Diagnose performance and hardware issues, evaluate GPU providers, support ML training workloads, and maintain secure infrastructure. The role also includes hardware installation, datacenter coordination, and vendor management.

Build and operate infrastructure supporting AI model training, inference, and product platforms. Responsibilities include managing Kubernetes and GPU clusters across cloud and on-premises environments, provisioning compute and networking, operating databases and Kafka, developing Python-based automation and self-service tooling, and leading cloud migrations and platform improvements focused on reliability, security, and cost efficiency.

Build and operate H’s environment-agnostic infrastructure platform, including Kubernetes clusters, networking, authentication and authorization systems, infrastructure as code, CI/CD, observability, and Kubernetes-native services. The role focuses on scaling infrastructure, supporting customer deployments, improving deployment speed, and handling complex cloud, networking, security, data, and GPU workloads.

Build and operate an environment-agnostic infrastructure platform supporting H's products and customers. Responsibilities include scaling Kubernetes clusters and networking, developing authentication and authorization systems, accelerating deployments, building Kubernetes-native controllers and operators, and maintaining infrastructure as code. The role also involves CI/CD, observability, multi-cloud systems, complex network topologies, and high-scale or latency-sensitive workloads.

Build and operate scalable, multi-tenant data infrastructure for millions of Lovable applications. Responsibilities include ingestion, analytical storage, schema management, partitioning, compaction, query performance, isolated agent-written connectors, scheduling, retries, metering, workload isolation, observability, freshness, and recovery. The role requires production ownership across data platform layers while controlling tenant costs and protecting workloads from untrusted or noisy producers.

Supports and develops digital infrastructure across the UK and Ireland, including Windows, Linux, networking, web services, and digital advertising platforms. Responsibilities include third-line incident resolution, root-cause analysis, change and deployment management, technical documentation, supplier coordination, operational support, and planned overnight installations. The role also requires collaboration with project, technology, and field installation teams while maintaining reliable, safe service delivery.