1 to 25 of 80 High Availability Jobs in London

Server Architect - Cloud Resilience & High Availability (AWS Focus) London/Hybrid - 3 to 4 days per week onsite £620 per day inside ir35 6 months initial contract - Active SC or DV clearance We are seeking an experienced SQL Server Architect to support a major cloud transformation programme, migrating … premises infrastructure to AWS. The initial engagement will involve an eight-week Proof of Value (PoV), focused on designing, testing and validating SQL Server high availability (HA) and disaster recovery (DR) solutions within AWS. This will include assessing different resilience patterns, failover capabilities, performance and cloud-native services. ...

across the UK and internationally. The successful candidate will play a key role in maintaining, optimising and supporting critical database and infrastructure environments, ensuring high availability and performance across both internal systems and customer platforms. The Role As a Database Infrastructure Engineer, you will be responsible … database environments, alongside wider infrastructure and virtualisation technologies. Working within a collaborative technical team, you will support systems that operate 24/7, implementing high availability, replication and backup strategies whilst contributing to ongoing infrastructure improvements and customer projects. Key responsibilities include: Administering and performance tuning Microsoft ...

that underpin large-scale, mission-critical enterprise applications hosted within AWS cloud environments. Initially, you will lead an intensive proof-of-value phase, evaluating high availability and disaster recovery (HA/DR) patterns for SQL Server on AWS. Following successful completion, the role will transition into a longer … complex enterprise environment. Key Responsibilities Design and own SQL Server architecture supporting business-critical enterprise platforms hosted on AWS. Develop and validate High Availability and Disaster Recovery (HA/DR) strategies. Design and implement SQL Server Always On Availability Groups, Failover Cluster Instances (FCI), and other resilience ...

stability, scalability, and automation of our cloud-based production environments and play a key role in ensuring our services are reliable and high-performing. You’ll support system availability, monitoring, alerting, SLOs/SLIs and incident response; deploy and manage containerised applications, contribute to CI/… return to work, and a contributory pension scheme with a generous employer contribution.In this role you’ll:Maintain and support production systems to ensure high availability, reliability and scalability.Implement SRE practices, including monitoring, alerting, SLOs, SLIs and incident response.Deploy, configure and manage containerised applications using Docker and Kubernetes.Develop ...

WebLogic, Oracle HTTP Server (OHS), Forms, Reports, Concurrent Managers, and Workflow. Oversee context file management, AutoConfig maintenance, and system integration points. 2. Database Administration & High Availability Configure, maintain, and tune high-availability Oracle Databases supporting EBS (including Oracle RAC). Execute database cloning, upgrades, patching ...

error budgets across critical services. Apply resilient design patterns, including multi-region failover, active-active architectures, circuit breakers and bulkheads. Ensure platforms support high availability, fault tolerance and disaster recovery in line with financial market uptime requirements. Investigate platform failures, performance bottlenecks and systemic issues across complex, multi … solving mindset and a focus on reliability and continuous improvement. Preferred Experience Financial services or other data-intensive, regulated industries. Multi-region AWS architecture, high availability and mission-critical applications. Chaos engineering practices and resilience testing. AIOps and intelligent automation frameworks. ...

virtualisation, backup, networking, monitoring, and security. The successful candidate will act as a senior technical escalation point, lead technical discovery and solution delivery, maintain high-quality documentation, and drive service reliability and continuous improvement. Due to the nature of the customer environments supported, candidates must be eligible to obtain … monitoring, and cloud-related incidents and service requests. Support, administer, troubleshoot, and improve Microsoft Exchange Server, hybrid Exchange, Exchange Online, migrations, mail flow, security, availability, and disaster recovery. Support and optimise Citrix environments, including Virtual Apps and Desktops, StoreFront, Delivery Controllers, Citrix Gateway or ADC, profile management, application delivery ...

virtualisation, backup, networking, monitoring, and security. The successful candidate will act as a senior technical escalation point, lead technical discovery and solution delivery, maintain high-quality documentation, and drive service reliability and continuous improvement. Due to the nature of the customer environments supported, candidates must be eligible to obtain … monitoring, and cloud-related incidents and service requests. Support, administer, troubleshoot, and improve Microsoft Exchange Server, hybrid Exchange, Exchange Online, migrations, mail flow, security, availability, and disaster recovery. Support and optimise Citrix environments, including Virtual Apps and Desktops, StoreFront, Delivery Controllers, Citrix Gateway or ADC, profile management, application delivery ...

this role, you will act as the technical authority across compute, storage, networking, automation, and virtualization platforms. You will be responsible for translating high-level business objectives into resilient, secure, and scalable technical solutions, ensuring all architectural blueprints comply with rigorous government security frameworks and long-term IT roadmaps. … design governance, operational delivery, and team mentorship. Key Responsibilities Architectural Governance & Technical Authority: Lead the end-to-end authoring, validation, and review of robust High-Level Designs (HLDs) and Low-Level Designs (LLDs) for high-stakes, mission-critical services. Requirements Translation: Bridge the gap between non-technical stakeholders ...

development teams to review T-SQL, stored procedures and database design decisions. Provide practical guidance to developers on writing efficient T-SQL and implementing high-performing database solutions. Performance Tuning and Optimisation Proactively monitor database workloads, identify performance bottlenecks and resolve complex database issues. Analyse execution plans and optimise … health and performance of the SQL Server estate. Manage day-to-day operational activities, monitoring, patching and database lifecycle management. Maintain the reliability and availability of business-critical production systems operating 24/7/365. Azure and Hybrid Cloud Infrastructure Administer and optimise SQL Server workloads across Azure ...

Oracle Apps DBA to manage, maintain, and optimise mission-critical Oracle E-Business Suite (EBS R12) environments and underlying databases. In this hands-on, high-impact technical role, you will take ownership of cross-layer troubleshooting spanning application, database, operating systems, and infrastructure. You will play a key part … maintaining system performance, security, and high availability, while actively contributing to major cloud migration initiatives (OCI/Azure). Key responsibilities EBS & Database Lifecycle: Maintain, update, copy, and refresh core Oracle systems across test, development, and live 24/7 production environments. Core Apps Administration: Manage key system ...

vSphere environments, including ESXi, vCenter, clusters, virtual machines and templates. Manage VMware HA, DRS, vMotion, Storage vMotion, resource pools and lifecycle management. Maintain platform availability, performance, security, upgrades and patching. Support VDI environments built on vSAN. Compute & Storage Support physical compute infrastructure and hardware lifecycle management. Manage server firmware … Recovery & Resilience Ensure virtual infrastructure is recoverable, resilient and appropriately protected. Support backup platform integration, snapshot governance, disaster recovery testing and recovery exercises. Maintain high-availability and business continuity requirements. Monitoring, Capacity & Automation Monitor infrastructure health, performance, utilisation and capacity. Develop monitoring, alerting and operational dashboards. Automate infrastructure ...

looking for an experienced Network Engineering Specialist (4G ESN/Mobile RAN Performance SME) to shape mobile RAN strategy and optimize critical, high-availability networks. Operating in the 4G Emergency Services Network (ESN) domain, you will lead end-to-end performance analysis, troubleshoot complex protocol traces, and drive … Accuver, TEMS/Nemo, Actix, Wireshark, and protocol analysis (SIP, PTT, SRTP, DTLS). Telecom Background: Proven track record as a performance SME in high-availability mobile networks working with 3rd-party suppliers. Randstad Technologies is acting as an Employment Business in relation to this vacancy. ...

build for travelers everywhere. The teamAs a Fullstack engineer in the Product Experience team, you will be responsible for building and maintaining our high-availability, high-transactional Property Detail Pages on the app. You will be part of a multi-functional team of Product Managers, TPMs, Engineering … Managers, and Software Engineers based in Gurgaon, Bangalore, London, and Madrid. We prioritise building high-quality software with a focus on availability, performance, scalability, and system resiliency. Our London team is looking for curious, empathetic, and creative problem solvers with a growth mindset. We value our team culture ...

About the Role As an S/4 Senior Basis Consultant, you will design, implement, and maintain complex SAP S/4HANA systems, ensuring high performance, availability, and alignment with enterprise architecture standards. You will lead technical teams across system administration, database management, cloud migration, and integration strategy … installation, configuration, and maintenance of SAP S/4HANA, SAP HANA databases, and associated SAP cloud and on-premise components. Manage system performance tuning, high availability/disaster recovery setup, and lifecycle upgrades/system copies across complex landscape topologies. Collaborate with cloud providers (AWS, Azure, GCP), functional ...

mitigation, and business alignment.Define platform capabilities for compute, storage, networking, identity, and data services across hybrid environments.Enable AI‐ready infrastructure designs including GPU integration, high-performance networking, and scalable storage tiers.4. Security, Zero Trust & ComplianceEmbed Zero Trust principles across hybrid cloud—identity, segmentation, encryption, and posture control.Align infrastructure with … prem: IAM, PAM, KMS, certificates, secrets management.Partner with security architects to ensure platform designs meet enterprise security requirements.5. Resilience, Observability & Performance EngineeringArchitect high‐availability and disaster recovery models across hybrid environments.Define availability zones, failover strategies, multi‐region patterns, and RTO/RPO targets.Implement full‐stack observability: logging ...

handling. * Network and application platforms such as load balancers, reverse proxies, firewalls, web servers and databases. * HSMs, KMS, secrets-management platforms & privileged access controls. * High availability, disaster recovery, monitoring, logging & IT service-management integration. Qualifications * Essential or strongly preferred: relevant vendor implementation certification for the selected CLM platform … remediation priorities. * Strong written and verbal communication, including technical workshops and senior stakeholder updates. * Good planning, prioritisation and dependency management across multiple onboarding waves. * High-quality technical documentation and knowledge transfer. ...

handling. Network and application platforms such as load balancers, reverse proxies, firewalls, web servers and databases. HSMs, KMS, secrets-management platforms & privileged access controls. High availability, disaster recovery, monitoring, logging & IT service-management integration. Qualifications Essential or strongly preferred: relevant vendor implementation certification for the selected CLM platform … remediation priorities. Strong written and verbal communication, including technical workshops and senior stakeholder updates. Good planning, prioritisation and dependency management across multiple onboarding waves. High-quality technical documentation and knowledge transfer. TPBN1_UKTJ ...

first-line engineering support through a globally distributed follow-the-sun support model, ensuring timely incident response and resolution.Monitor and improve system health, availability, performance, and reliability through observability, alerting, and proactive operational practices.Independently troubleshoot production incidents, perform root cause analysis (RCA), and implement preventive measures to reduce recurring … such as Prometheus, Grafana, Datadog, or similar platforms.Solid understanding of incident management, troubleshooting methodologies, root cause analysis, and production support practices.Familiarity with distributed systems, high availability, scalability, and reliability engineering principles.Experience identifying operational inefficiencies and implementing automation or process improvements.Strong analytical, problem-solving, and troubleshooting skills, with ...

expected to maintain a broad technical knowledge across all major cloud platforms and build credibility by pursuing relevant certifications. Key Responsibilities Delivery of high quality cloud-based technical solutions for our clients: Act in a leadership capacity in cross-functional teams, particularly those where cloud engineering functionality forms … streamline application deployments Monitor cloud infrastructure for performance bottlenecks and proactively optimise resource usage Implement load balancing, caching, and content delivery solutions to ensure high availability and performance Design and maintain backup and disaster recovery solutions to ensure business continuity in the event of system failures or data ...

leased/colocation data centers They co-ordinate with AWS DCEO (Data Center Engineering Operations) teams to implement new builds, upgrades etc and ensures high availability and high resiliency of these control systems. Ascertain customer needs to help develop project scope and specifications. Manage scopes of work ...

Terraform and AWS CDK.Set standards: Define repository, branching, code quality and automation standards across teams.Design for resilience: Partner with architects and developers on scalability, high availability, disaster recovery and multi-region design.Drive observability: Lead best practices for monitoring, logging, tracing and alerting.Improve operations: Take part in incident response ...

ensuring our critically important database systems are secure, scalable, and reliable. You'll join a world-class team, applying your expertise to support the high-traffic, data-intensive workloads that power our popular gaming platforms. This is an outstanding chance to create a significant impact within an ambitious … technical authority for MySQL, partnering closely with Architecture, Engineering, Data Science, and SRE teams to ensure our databases can safely scale to meet high-traffic, data-intensive workloads. Key Responsibilities Database Architecture & Scalability Own and evolve the architecture of high-performance, highly available MySQL platforms supporting production game ...

frameworks (e.g., Cucumber, FitNesse).Trading Domain Knowledge (Preferred): Front-office trading familiarity across FX, Rates, or Commodities (pricing, order execution, risk management).Non-Functional & High-Performance Testing: Experience with performance, resilience, and NFT in high-volume, low-latency, and high-availability environments.CI/CD, Unix & Tooling ...

migration of an enterprise-scale SharePoint platform from on-premises infrastructure to AWS. The initial eight-week Proof of Value will assess SQL Server high availability, disaster recovery and performance options, with the potential to progress into a detailed architecture and design phase through … cost-effective platform. Essential Technical Skills 10+ years' Microsoft SQL Server architecture and engineering experience (SQL Server 2016+). Strong experience with Always On Availability Groups, Failover Cluster Instances (FCI) and HA/DR solutions. Experience supporting large-scale SharePoint farms and SQL Server databases. Strong SQL Server performance ...