1 to 25 of 89 High Availability Jobs in London

team. This is a key role with responsibility for the design, delivery, and ongoing support of a global enterprise network , working in a complex, high-availability environment. You will play a pivotal role in modernising network infrastructure , driving technical improvements, and providing senior-level support across the organisation. … switching, firewall, and SD-WAN solutions Integrate switches, routers, wireless controllers, SDN, load balancers, NAC servers, and cloud platforms Ensure network security, resilience, and high availability across global environments Skills & Experience Required Proven experience designing and implementing networks in a large user or enterprise environment Strong Cisco background ...

fast-growing London-based FinTech firm building secure, scalable, and high-performance financial platforms that power digital payments, lending, and real-time financial services. As they scale the platform and expand their product offerings, they are looking for a Senior DevOps Engineer to play a key role in shaping … secure, resilient, and compliant with financial regulations. This is a hands-on technical role with strategic influence — ideal for someone who thrives in high-availability, high-security environments and enjoys mentoring others. Key Responsibilities Design, build, and maintain scalable cloud infrastructure (AWS) Lead Infrastructure as Code initiatives ...

IaaS experience and strong FinOps discipline . This role owns the network‐first, cost‐aware infrastructure architecture for SAP workloads on Azure, ensuring secure, high‐performance, highly available, and financially optimized Azure environments. The architect will design enterprise Azure networking , lead SAP migrations to Azure IaaS , and apply FinOps … Cost‐Aware) Architect enterprise‐scale Azure IaaS platforms for SAP workloads Design and govern: SAP‐certified Azure Virtual Machines Managed disks (Premium/Ultra) Availability Sets and Availability Zones Own infrastructure sizing, capacity planning, and performance tuning for SAP HANA Define OS‐level standards (Linux/Windows ...

Location: London (Hybrid) Type: Permanent Industry: High-Performance Trading/Financial Markets About the Company Immersive Finance provides institutional-grade risk infrastructure for digital asset derivatives. Our team comprises seasoned traders, quantitative researchers, and technologists with decades of experience at leading buy- and sell-side institutions. We specialise … delivering production code. 5-10 years in Finance or Trading Systems. Advanced C++ skills. Strong Python engineering experience. Strong understanding of databases (SQL and high-performance solutions). Expertise in building and supporting high-availability , mission-critical systems . Desireable Experience building and deploying docker containers. Experience ...

across Azure and Microsoft SQL platforms for a growing SaaS client of ours. The position supports the wider DevOps objectives by ensuring the security, availability, integrity, and end-to-end support of database services. Working as part of a DevOps team, the role is responsible for both on-premise … based database systems, including both vendor-supplied and internally developed solutions Design and implement tactical and strategic database solutions with a focus on scalability, availability, performance, and resilience Proactively monitor the SQL Server estate to ensure high availability and optimal performance Provide operational support to internal stakeholders ...

lookout for a skilled Sybase Database Administrator (DBA) to join us on a contract basis. If you thrive in high-stakes environments and have a passion for database management, we want to hear from you! Key Responsibilities: Installing, configuring, and maintaining Sybase ASE and Replication Server environments. Managing database … resource allocation. Diagnosing and resolving blocking, deadlocks, contention, and execution plan issues. Maintaining and improving backup and recovery strategies using Sybase Backup Server. Supporting high-availability and replication architectures, including DR environments. Conducting regular recovery testing and ensuring compliance with DR procedures. Providing L2/L3 support ...

Location -London, UK Onsite role- 5 days from office Job Description We are seeking a Contact Center Engineer/Senior SME to own high‐severity, complex, and business‐critical incidents across Genesys Cloud CX and Cisco Unified Contact Center Enterprise (UCCE) platforms supporting mission‐critical enterprise Voice Network. This … guide platform stability initiatives, and mentor Level‐2 engineers. Key Responsibilities Incident & Problem Management (Genesys Cloud CX & UCCE) Act as L3 escalation for all high‐severity P1/P2 contact center incidents across Genesys Cloud CX and Cisco UCCE. Lead technical triage, incident bridges, and resolution strategy during major ...

managed services, automated and auditable deployment pipelines, secrets management Nice to Have Financial services, trading, or capital markets - operational security in a regulated, high-availability, zero-downtime-tolerance environment Zero-trust architecture: BeyondCorp, Zscaler, or equivalent; conditional access policy design and implementation DDoS mitigation, BGP security, and network … managed services, automated and auditable deployment pipelines, secrets management Nice to Have Financial services, trading, or capital markets - operational security in a regulated, high-availability, zero-downtime-tolerance environment Zero-trust architecture: BeyondCorp, Zscaler, or equivalent; conditional access policy design and implementation DDoS mitigation, BGP security, and network ...

dynamic IT infrastructure team. You will play a key role in maintaining, securing, and optimising the organisation’s network and virtual infrastructure environment, ensuring high availability, performance, and resilience across business-critical systems. This role offers a mix of BAU support and project-based work, including infrastructure upgrades … security best practices across network and virtual environments Provide 2nd/3rd line support for infrastructure and network incidents Support backup, disaster recovery, and high-availability configurations Maintain infrastructure documentation, diagrams, and configuration standards Contribute to infrastructure transformation and cloud integration initiatives Required Experience Proven experience ...

Executive teams to align technology with business strategy and accelerate innovation. What you’ll lead Enterprise‐wide Cloud & SaaS architecture vision Multi‐tenant, high‐availability, distributed systems Shared services consolidation (Auth, Analytics, APIs, GenAI foundations) Microservices & cloud‐native architecture design DevOps, CI/CD, and unified cloud deployment … level innovation What you bring 15+ years in software engineering & architecture 5+ years leading end‐to‐end system architecture Proven experience delivering large‐scale, high‐availability enterprise systems Significant experience in SaaS/Cloud‐native product companies, operating multi‐tenant platforms at scale Deep knowledge of distributed systems ...

Duration: 6 months initially Your New Role We are seeking a Senior Network Engineer with strong experience in broadcast IP environments to join a high-performance infrastructure team. This role will focus on the design, implementation and ongoing support of highly available network infrastructure supporting live broadcast and production … Arista hardware is essential. Your Responsibilities Network Design and Implementation * Design, deploy, configure and maintain scalable and resilient LAN, WAN and WiFi infrastructure. * Ensure high availability and performance across all network services supporting critical operations. Broadcast and AV Integration * Support IP based and cloud-based broadcast workflows. * Ensure ...

Admin Location: Edinburgh or Ireland or London (Hybrid-2/3 days from office) 6 months contract position Role description: The ideal candidate ensures high availability and optimal performance of the DB2 subsystem. This role requires deep technical knowledge of SMP/E, z/OS internals … monitoring. Security : Implement and manage DB2 security using RACF, ACF2, or Top Secret. Key skills/knowledge/experience: The ideal candidate ensures high availability and optimal performance of the DB2 subsystem. This role requires deep technical knowledge of SMP/E, z/OS internals, and third ...

business and user outcomes. Lead incident management, post-incident reviews, and remediation planning. Architecture & Resilience Review and advise on system architecture to improve scalability, availability, and fault isolation. Design strategies for high availability, graceful degradation, and disaster recovery across multi-region environments. Quantify trade-offs between performance … Python, or Java, building automation or reliability systems. Experience designing and operating CI/CD pipelines with deployment safety guardrails. Proven track record leading high-severity incidents and driving systemic remediation. Excellent interpersonal skills with experience influencing cross-team decisions. Preferred Qualifications Experience with multi-cloud or multi-region ...

defining reliability standards, influencing architectural improvements, managing complex incidents, and building automation to improve deployment safety and operational efficiency. Your work will directly support high-traffic systems used by a global audience. Key Responsibilities Reliability & Risk Engineering My client is looking for someone who can: Identify systemic reliability risks … network infrastructure is key Experiecne working as senrio SRE particularly around AWS Architecture & Resilience You will: Review and influence system architecture to improve scalability, availability, and fault isolation Design strategies for high availability, graceful degradation, and disaster recovery Evaluate trade-offs between performance, cost, and operational risk ...

Have Experience with Python scripting for automation and reliability tooling. Knowledge of Java and/or React application deployments in production. Prior experience in high-volume, high-availability environments. ...

entire infrastructure stack; from CI/CD pipelines to production deployments, from infrastructure orchestration to security governance. You’ll be part of a high-powered team located in London. You will build robust systems, move quickly, but be ready to scale and ensure production-grade reliability as our product … Prometheus, Grafana, CloudWatch, Datadog, Sentry) to ensure system reliability and rapid incident response. • Establish SLOs/SLIs and implement observability best practices to maintain high availability and performance. • Lead incident response, root cause analysis, and implement preventive measures to improve system resilience. Security & Governance: • Implement and maintain security ...

week in the office (base office can be London or Leeds) Please note: An active SC Clearance is required for this role Our high-profile Banking client is seeking a highly skilled Senior DevOps Engineer to join the team responsible for the Bank's Real-Time Gross Settlement (RTGS … Strong production support experience, including on-call and OOH releases. Significant hands-on experience with on-prem Kubernetes/OpenShift. Linux systems administration in high-availability environments. Infrastructure as Code using Terraform, with CI/CD integration (Jenkins). Deep understanding of observability tooling: ELK, Splunk, Prometheus, Grafana. ...

deployment practices, monitoring, and long-term maintainability. Operational Accountability: Act as the technical owner of production systems that directly impact live rail operations, ensuring high availability and rapid incident resolution. Requirements Must Haves 4+ years of professional experience with Ruby on Rails. Strong understanding of object-oriented programming … your family Culture & Operating Principles We value : Ownership over hierarchy Clarity over bureaucracy Impact over job titles We operate with high autonomy and high accountability. People are expected to raise risks early, communicate clearly, and take responsibility for outcomes. Interview Roadmap Screening Call (30 mins) – Recruiter alignment Technical ...

/Fintech About BTCC Founded in 2011, BTCC is one of the world’s longest-running cryptocurrency exchanges, committed to delivering secure, transparent, and high-performance digital asset trading infrastructure. With more than a decade of operational excellence in global crypto markets, BTCC continues to scale its technology stack … skills and ability to collaborate effectively with internal teams and external stakeholders. Excellent team player with the ability to work in a fast-paced, high-availability environment. Proficiency in Mandarin (verbal and written) is mandatory. Why BTCC? At BTCC, you will work at the forefront of blockchain infrastructure ...

countries within key global markets. About the Role We are looking for an experienced OpenShift Site Reliability Engineer (SRE) to ensure the reliability, availability, and performance of enterprise‐grade OpenShift‐based virtualized and container platforms. This role focuses on automation, secure service design, and cross‐team collaboration across Applications … outages, enforce SRE best practices, and participate in an on‐call rotation. Primary Responsibilities Manage and optimize OpenShift and container/virtualization platforms for high availability and performance. Collaborate closely with multiple technical teams to deliver scalable, secure solutions. Design secure cloud‐native service architectures with automation-first ...

Messaging Administrator to join our Messaging team. You will be responsible for managing and supporting our enterprise messaging infrastructure built on Solace PubSub+, ensuring high availability, optimal performance, and reliability across production and non-production environments. This includes working on incident response, capacity planning, WAN optimization, and system … cloud-native Solace deployments. Why Join Us? Join a multi-discipline team, delivering advanced Messaging APIs, developing tools, administering , supporting low latency, high throughput messaging system for prices, orders, trades, and mission critical applications. Exciting opportunity to work with a wide array of technologies. Chance to further develop your ...

Design, implement, and maintain robust, secure, and scalable network infrastructure solutions? Are you able to ensure high availability, performance, and security of bpha's network systems while mentoring junior staff and collaborating across IT teams? Then we want to hear from you! We're looking for someone … standards. Implement and manage network security measures (firewalls, VPNs, IDS/IPS). Configure and maintain routers, switches, wireless systems, and firewalls. Deploy scalable, high-performance network solutions with minimal downtime. Conduct regular network maintenance, updates, and upgrades. Perform security audits and vulnerability assessments. Respond to and mitigate network ...

Optimization (PTO) Must have in-depth experienced, Manage SQL Server databases, Configure and maintain database servers and processes, Backups, restores and recovery models. High Availability (HA) and Disaster Recovery (DR) options for SQL Server and experience with Windows server, including Active Directory Monitor system’s health and performance … including ensure high levels of performance, availability, sustainability and security Analyze, solve, and correct issues in real time and Refine and automate regular processes, track issues, and document changes Assist developers with query tuning and schema refinement Provide 24×7 support for critical production systems Perform scheduled maintenance ...

Python, React, TypeScript and DevOps tooling. You will work on cutting-edge projects, develop scalable applications and collaborate with cross-functional teams to deliver high-quality solutions. Senior Full Stack Developer Key Responsibilities: Own the end-to-end architecture across front-end, back-end, APIs, data and system integrations. … data access strategies. Architect cloud-native solutions on AWS, Azure or GCP, incorporating CI/CD pipelines and Infrastructure as Code. Build for high availability, disaster recovery, cost optimisation and embedded observability. Apply secure coding practices and design robust authentication, authorisation and data-protection models. Ensure compliance with ...

Plan and execute migrations, including tenant-to-tenant Microsoft 365 and Active Directory consolidations * Collaborate with managed service providers and internal teams to maintain high availability, security and compliance * Support business continuity through proactive monitoring, incident management and disaster recovery planning * Mentor and provide technical guidance to team ...