1 to 25 of 63 Permanent 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 ...

skilled Full Stack Developer with strong experience in Java, Spring Boot, Kafka, and API Management platforms (Apigee) to build and support scalable, secure, and high-performance applications in the payments/banking domain . The ideal candidate will have hands-on experience with PayEdge or payment processing platforms , RESTful … using Spring Boot Implement RESTful APIs and integrate with internal and external systems Build event-driven architectures using Apache Kafka (producers, consumers, streams) Ensure high availability, scalability, and performance of services Implement security using OAuth2, JWT, API keys , and role-based access API Management & Integration Design, publish ...

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 ...

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 ...

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 ...

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 ...

core Production Engineering team, who are accountable for the reliability, operability and performance of the firm’s trading-critical systems, in an environment where availability, correctness and latency directly impact outcomes. The successful hire will own the reliability of business-critical systems, from observability design through to incident resolution … systemic improvement; lead high-severity incident management; and reduce toil with software engineering, primarily in Python but also with Golang, TypeScript, SQL and/or PowerShell. The role requires someone who can evidence outstanding problem-solving and the ability to solve problems on their own initiative. Requirements Debugging distributed ...

design, development, and maintenance of online game services such as authentication, matchmaking, real time gameplay systems, and player data synchronization. Ensure services maintain high availability and low latency for players across multiple regions. • Cross Functional Collaboration Work closely with global game development teams to refine and implement technical … Mandarin Chinese is beneficial but not essential. • Proficiency in at least one backend programming language, with strong preference for C++ or Go. Experience building high performance, highly concurrent, and highly available systems is important, including work with threading or coroutine based architectures. • Solid understanding of distributed systems and backend ...

roadmaps. Regularly undertake complex and/or critical consultative engagements, to a senior management level. Confidently scope complex and critical projects as well as (high level and detailed) deliverables. Able to work in a fast-paced project environment and tight delivery timelines. In addition, design, build, and operate platform … Code in an enterprise environment. Architectural design and deployment skills for enterprise Cloud technologies (public, private and hybrid) into complex environments. Excellent knowledge of high availability and backup/recovery solutions. Excellent technical design, performance improvement and service alignment skills. Experience around business critical and business continuity solutions. ...

using Bash, Python, or Perl scripts. • Design, deploy, and manage Linux workloads in Azure. • Implement and manage virtual networks, storage, and Azure resources. • Ensure high availability and disaster recovery of critical systems. • Use Azure DevOps for CI/CD pipeline automation and infrastructure as code (IaC). • Collaborate ...

with cutting-edge technologies, including GCP, Kubernetes, Terraform/OpenTofu, and modern CI/CD pipelines, while helping define best practices for a regulated, high-impact platform. What You’ll Do: Infrastructure & Automation: Build and maintain cloud infrastructure, CI/CD pipelines, and automated deployment workflows. Security & Compliance: Implement … securely. Incident Response: Contribute to operational and security incident handling to minimize downtime and risk. What You Bring: Strong experience designing, managing, and securing high-availability cloud infrastructure (GCP preferred). Expertise with Kubernetes (GKE), container runtime security, and cluster hardening. Solid skills in Infrastructure as Code (Terraform ...

secure AWS architectures for market data and pricing platforms Architect and govern API layers (REST/event-driven) for internal and external consumers Ensure high availability, performance, and resilience across critical financial systems Solutioning & DevOps Lead solution design across multiple delivery teams Define and embed DevOps and Infrastructure ...

London-based environment. This is a hands-on, technically led role where the Network and Security Specialist will be responsible for protecting systems, ensuring high availability, and strengthening security posture while supporting day-to-day operations and future growth. Key Responsibilities: • Design, implement, and maintain secure network … incidents using SIEM tools, Sophos MDR, and threat-hunting techniques. • Configure and manage firewalls, VPNs, IDS/IPS, web and email security solutions. • Maintain high patching and vulnerability remediation standards, including CVE management. • Coordinate annual third-party penetration testing and lead remediation based on risk and CVSS scoring. • Investigate ...