1 to 25 of 30 High Availability Jobs in the City of London

days per week on site The SQL DBA Engineer is responsible for designing, managing, and optimizing SQL database environments to ensure performance, availability, scalability, and security across business-critical systems. The role combines database architecture, administration, performance tuning, governance, backup and recovery planning, and support for application and infrastructure … database environments for performance, reliability, and scalability Lead database installation, configuration, patching, upgrades, and migration activities Define and implement backup, recovery, disaster recovery, and high-availability strategies Troubleshoot database issues, performance bottlenecks, and system failures Support capacity planning, database health checks, and performance tuning initiatives Ensure database security ...

days per week on site Job Summary The SQL DBA Engineer is responsible for designing, managing, and optimizing SQL database environments to ensure performance, availability, scalability, and security across business-critical systems. The role combines database architecture, administration, performance tuning, governance, backup and recovery planning, and support for application … database environments for performance, reliability, and scalability Lead database installation, configuration, patching, upgrades, and migration activities Define and implement backup, recovery, disaster recovery, and high-availability strategies Troubleshoot database issues, performance bottlenecks, and system failures Support capacity planning, database health checks, and performance tuning initiatives Ensure database security ...

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 ...

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 ...

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 ...

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. #J-18808-Ljbffr ...

fostering growth and innovation in a dynamic environment. As a Lead Technical Program Manager in Corporate Technology, you will lead the delivery of complex, high-impact technology programs supporting electronic trading across multi-asset, low-latency market environments (e.g., equities, FX, rates, credit, listed derivatives). You will apply … innovation, disciplined delivery, and continuous improvement. Job responsibilities Develop and execute comprehensive program plans integrating technical requirements for electronic trading platforms (low latency, high throughput, high availability). Lead cross-functional teams to define program scope, objectives, milestones, and deliverables aligned with trading/business outcomes. Drive ...

will design AWS networking solutions using technologies such as VPCs, Transit Gateway, Direct Connect, VPNs and Route 53, while ensuring infrastructure is built for high availability, failover and disaster recovery. You will also work across hybrid environments, supporting secure connectivity between AWS, Azure and on-premises infrastructure ...

RDS. Define and maintain resilient, secure, and scalable database architectures supporting critical services and operational workloads. Oversee database performance tuning, optimisation, capacity planning, and availability management. Design and maintain robust backup, recovery, disaster recovery, and business continuity capabilities. Provide expert-level operational support, troubleshooting, and root cause analysis … CloudFormation . Champion automation and modern engineering practices, including integration with CI/CD pipelines and DevOps delivery models. Produce and maintain high-quality technical documentation, architectural designs, operational procedures, and support artefacts. Ensure database services are delivered in line with security, audit, compliance, and operational requirements expected within ...

passionate about building and operating highly scalable database platforms? Have you administered and optimised mission-critical PostgreSQL environments in cloud-first organisations, ensuring performance, availability and resilience at scale? Can you demonstrate broad technical knowledge across Platform Engineering, DevOps and Infrastructure, alongside experience with automation and scripting using Python … Engineering, Platform Engineering, DevOps or Infrastructure roles with a strong focus on database administration. You'll possess deep expertise in PostgreSQL , including performance tuning, high availability, replication and operational support within Azure-based environments. You will have strong Linux systems administration skills, experience with database automation and infrastructure ...

share our story and Make Amazing Happen at CDW. Job summary This role sits within the IT Services team and is responsible for delivering high-quality 2nd line support across a complex, business-critical technology estate. This position plays a key role in ensuring system availability, operational stability … processing, ensuring completion and timely issue resolution Monitor key platforms and services (e.g. infrastructure, financial systems, integrations) System Stability & Continuous Improvement Contribute to maintaining high availability of critical systems Identify and reduce recurring incidents through root cause analysis and improvements Support automation, monitoring enhancements, and performance optimization Maintain ...

Terraform Integrate security, policy checks, and guardrails into module and pipeline workflows, partnering with security, risk, and compliance on exceptions where needed Produce high-quality module documentation, examples, and adoption guidance that reduce friction for internal customers Partner with application teams to translate requirements into reusable module patterns … registries Familiarity with containers and orchestration (Docker/Kubernetes) where modules integrate with application platforms Practical operational knowledge for database platforms (backup/restore, high availability/disaster recovery, performance tuning basics, patching, and maintenance windows) Experience with Go for platform tooling #J-18808-Ljbffr ...

providers, supporting the infrastructure and services that underpin our market data capabilities. This is a hands-on engineering role with a strong focus on availability, performance, automation and continuous improvement. You will have the opportunity to solve complex technical challenges, enhance the scalability and resilience of our market data … normalise and distribute market data from exchanges, vendors, internal platforms and third-party providers. Troubleshoot market data, application and infrastructure issues to maintain service availability and data integrity. Optimise market data platforms and pipelines for low-latency, high-throughput and scalable performance. Lead technical planning for platform upgrades ...

. Manage environment-related incidents and root cause analysis. Maintain environment documentation, topology diagrams, and runbooks. Engage with Release Managers to align environment availability with deployment schedules. Ensure compliance with security and governance policies. Coordinates and governs DR testing to validate recoverability, RTO/RPO compliance, and resilience across … environments, ensuring high availability and alignment with business continuity objectives. Design monitoring and observability frameworks to accelerate root cause analysis and reduce Mean-Time-to-Recovery (MTTR) Essential skills Proficiency in DevOps tools (Terraform, Ansible, Jenkins, GitHub Actions). Solid understanding of CI/CD pipelines and release ...

support of Microsoft 365 services including Exchange Online, Teams, OneDrive, and SharePoint Online. Design, implement, and maintain messaging and collaboration solutions to ensure high availability and performance. Manage mail flow, email security, retention, archiving, and compliance policies. Endpoint & Mobility Management Manage and support Microsoft Intune and Mobile Device ...

Responsibilities: Provide end-to-end production support for Fixed Income trading platforms (Rates, Credit, FX, Bonds, Derivatives). Monitor and maintain system health, ensuring high availability and low latency of critical trading applications. Support and enhance monitoring capabilities using ITRS Geneos, initially within FICC and expanding to other ...

trading platform. The organisation operates a complex global technology estate, with network infrastructure connecting data centres, offices, cloud environments and critical trading services. Network availability, resilience, security and low-latency performance are fundamental to its operations. This is a hands-on senior engineering position offering significant technical ownership across … critical network infrastructure. Strong technical knowledge of enterprise and data centre networking. Hands-on understanding of: BGP, OSPF , Routing and switching Network resilience and high availability Network troubleshooting and incident resolution Ability to manage network changes within highly available production environments. Desirable Experience Experience with AWS networking . ...

trading platform. The organisation operates a complex global technology estate, with network infrastructure connecting data centres, offices, cloud environments and critical trading services. Network availability, resilience, security and low-latency performance are fundamental to its operations. This is a hands-on senior engineering position offering significant technical ownership across … critical network infrastructure. Strong technical knowledge of enterprise and data centre networking. Hands-on understanding of: BGP, OSPF , Routing and switching Network resilience and high availability Network troubleshooting and incident resolution Ability to manage network changes within highly available production environments. Desirable Experience Experience with AWS networking . ...

tools such as React Query and Tailwind Contribute to infrastructure, system architecture and cloud-native engineering decisions Work on distributed systems, real-time processing, high availability and system performance Collaborate effectively with AI, product and infrastructure teams to deliver reliable features Support API testing and maintain high ...

environments Design and manage backup and recovery using RMAN, Flashback, Data Pump and established migration methodologies Administer Oracle ASM and Data Guard to support high availability and disaster recovery Manage multi-tenant architecture, including PDB and CDB design and administration Provide L3 support across Oracle Database and Exadata ...

throughout the software development lifecycle. This role works closely with engineering, QA, and release teams to ensure environments are fit for purpose and support high-quality delivery. Responsibilities Lead the setup, configuration, and maintenance of development and test environments. Act as the technical point of contact for environment-related … environment-related best practices. Executes DR testing, validating system recovery, integrations, and service resilience post-fail over to ensure continuity and adherence to high-availability and recovery objectives. implements monitoring and observability frameworks, using CNCF and commercial tooling, to accelerate root cause analysis and reduce Mean-Time ...

Network & Security Engineer to join our Technology team. This role plays a key part in designing, building and supporting our global network infrastructure, ensuring high performance, resilience and security across on-premise and cloud environments. You will work across both project delivery and business-as-usual operations, supporting critical … cloud network infrastructure Deliver network engineering and design for new initiatives, alongside ongoing BAU growth and optimisation Monitor network performance, capacity and availability, providing proactive support and troubleshooting Implement new network services in line with internal policies, standards and security requirements Identify, advise on and remediate network and security ...

Managers Ltd. in London is seeking a Senior Network Engineer for a 6-month hybrid contract to join a global engineering team supporting a high-availability trading platform. You will own day-to-day network operations, incident management and changes across data centres, offices, and cloud environments, with ...

enterprise Citrix Cloud platform. You will lead the transition from legacy VDI to a modern, Azure-integrated multisession environment, ensuring lightning-fast performance and high availability for a global workforce. Core Responsibilities Design and architect the end-to-end Citrix Cloud and Azure VDI infrastructure (HLD/ ...

delivering key business initiatives. Key Responsibilities Own the end-to-end payment card processing environment across two brands and approximately 800 locations. Ensure high availability, resilience, performance, and security of payment services. Maintain responsibility for payment acceptance technologies including payment terminals, payment switching hosts, payment gateways, acquiring integrations ...