1 to 25 of 68 High Availability Jobs in the City of London

Senior Backend Engineer (Golang) Overview We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. Our mission is to restore trust in voice communication by building a … from the moment a caller stops speaking to the moment our AI begins its response. You won't just be integrating APIs; you will be architecting the real-time, high-throughput nervous system of our core AI product. Key Responsibilities AI Orchestration & Core Logic Own the end-to-end backend architecture for the Personal Welcome Manager, our flagship conversational … application logic for all Welcome Manager features, including intent-capture, post-call summarization with entity extraction, and error handling. API & Application Development Design, build, and scale the mission-critical, high-availability RESTful APIs that serve our mobile clients (Android-first). Architect and manage the real-time streaming data flows (audio and text) required for the live transcription More ❯

Senior Backend Engineer Golang Overview We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. Our mission is to restore trust in voice communication by building a … from the moment a caller stops speaking to the moment our AI begins its response. You won't just be integrating APIs; you will be architecting the real-time, high-throughput nervous system of our core AI product. Key Responsibilities AI Orchestration & Core Logic Own the end-to-end backend architecture for the Personal Welcome Manager, our flagship conversational … application logic for all Welcome Manager features, including intent-capture, post-call summarization with entity extraction, and error handling. API & Application Development Design, build, and scale the mission-critical, high-availability RESTful APIs that serve our mobile clients (Android-first). Architect and manage the real-time streaming data flows (audio and text) required for the live transcription More ❯

transmission systems, ensuring the highest standards of broadcast excellence. This is a key position where you will guarantee seamless content delivery for a prestigious client base by ensuring the high availability, scalability, and robust security of all systems. What's In It For You? Lead Critical Projects: You will take the lead on technical systems projects from concept … with cutting-edge broadcast technology and ensuring projects are delivered on schedule and within budget. Drive Technical Innovation: This role offers the chance to design, develop, and implement complex, high-availability distributed systems, giving you a platform to solve advanced challenges and shape the infrastructure of a growing company. High-Impact Environment: As a key member of … a start-up, you will have the opportunity to mentor and collaborate with technology teams, directly influencing the engineering culture and resolving high-level technical issues in a dynamic environment. Responsibilities: Take full ownership of the core infrastructure, administering and maintaining primarily Linux-based environments through configuration, deployment, upgrades, and patching. Drive the end-to-end delivery of technical More ❯

development, sales, solution and delivery of GCP Cloud capabilities. You will lead a team of Sr. Cloud Architects and Engineers to build and deliver GCP Cloud platform capabilities ensuring high availability, security and efficiency for our customers. This role will be accountable for ensuring delivery excellence and providing thought leadership to Our customer’s executive and technical leadership. … Infrastructure as code (IaC) tools such as Terraform, Ansible Strong understanding of IT service management (ITSM) frameworks like ITIL Experience with DevOps tools and deployment patterns Strong understanding of High Availability and Multi Region Architectures Hands on experience in Data & Application Migrations to GCP Proven scripting experience in languages like python, go, etc... Deep understanding of Agile methodology More ❯

seamless operations. Work with virtual cloud firewall appliances (e.g., CheckPoint, Cisco) to ensure network security. Implement and manage routing protocols such as BGP and OSPF, with a focus on high-availability designs. Ensure adherence to software engineering best practices, including unit testing, code reviews, and troubleshooting. Support infrastructure-as-code practices using tools like Terraform, Pulumi, and GitOps … in virtual cloud firewalls (CheckPoint, Cisco) and cloud security best practices. Strong Python programming skills for automation, API integration, and orchestration. Proven knowledge of routing protocols (BGP, OSPF) and high-availability architecture. Hands-on experience with Infrastructure-as-Code tools (e.g., Terraform, Pulumi) and GitOps methodologies. Expertise in software engineering practices: unit testing, code reviews, documentation, debugging, and More ❯

seamless operations. Work with virtual cloud firewall appliances (e.g., CheckPoint, Cisco) to ensure network security. Implement and manage routing protocols such as BGP and OSPF, with a focus on high-availability designs. Ensure adherence to software engineering best practices, including unit testing, code reviews, and troubleshooting. Support infrastructure-as-code practices using tools like Terraform, Pulumi, and GitOps … in virtual cloud firewalls (CheckPoint, Cisco) and cloud security best practices. Strong Python programming skills for automation, API integration, and orchestration. Proven knowledge of routing protocols (BGP, OSPF) and high-availability architecture. Hands-on experience with Infrastructure-as-Code tools (e.g., Terraform, Pulumi) and GitOps methodologies. Expertise in software engineering practices: unit testing, code reviews, documentation, debugging, and More ❯

PER WEEK IN LONDON OFFICE - St James/Green Park AZ-104/AZ-700, Juniper, Palo Alto firewalls, Azure Cloud Networking Scripting - either Terraform or Powershell Network monitoring, high availability hybrid Cloud environment (Azure) Global Investment Fund Manager 4 days in the London office, 1 day WFH This impressive, privately owned Investment Fund Manager is seeking an … experienced Network Engineer to join their small IT team in London. Reporting to the Head of Infrastructure, you will take ownership of ensuring high availability of a complex hybrid Cloud environment working with Juniper, Palo Alto firewalls, routers, switches, load balancing and WiFi access points. They have a Azure Cloud environment so experience with networking in this setup More ❯

deployments, and maintaining the resilience and security of our infrastructure. You will work closely with cross-functional teams, implementing cutting-edge solutions to optimise software development lifecycles and ensure high availability, performance, and compliance of our platforms. This role demands a high level of technical expertise in cloud infrastructure, automation, and containerisation, as well as an ability … automated Continuous Integration/Continuous Deployment (CI/CD) pipelines using industry-standard tools (Jenkins, GitLab, Argo). Ensure pipelines follow best practices to expedite software releases, while maintaining high-quality standards and minimizing risks. Container Orchestration: Manage, maintain, and scale Kubernetes and Docker clusters across various jurisdictions with different regulatory requirements, ensuring that platforms remain secure, compliant, and … global cloud infrastructure (primarily AWS) to ensure seamless integration, scaling, and resilience. Maintain services like AWS EC2, ECS, EKS, VPC, and Transit Gateways. UAT Environment Management: Build and maintain high-quality User Acceptance Testing (UAT) environments to ensure that pre-production testing mirrors production environments, allowing rigorous and reliable software validation before live releases. Monitoring & Maintenance: Perform daily monitoring More ❯

providing solutions and serving thousands of businesses. The Role Build scalable Java microservices for core banking platforms. Take ownership of key components and work with a talented team on high-performance financial solutions. What You'll Do Design and develop Java microservices (Spring Boot, Hibernate/JPA) for backend systems Build cloud-native solutions on Azure with containerization Implement … integrated with banking platforms Develop full-stack features with JavaScript frameworks (React/Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need 5+ years with strong Java/J2EE expertise (Java 8+, Spring, Hibernate) Azure cloud experience with microservices (AWS considered) Docker More ❯

businesses. The Role Hiring a Senior Software Engineer to build scalable Java microservices for core banking platforms. Take ownership of key components and work with a talented team on high-performance financial solutions. What You'll Do as a Senior Software Engineer: Design and develop Java microservices (Spring Boot, Hibernate/JPA) for backend systems Build cloud-native solutions … integrated with banking platforms Develop full-stack features with JavaScript frameworks (React/Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need 5+ years experience as a Software Engineer with strong Java/J2EE expertise (Java 8+, Spring, Hibernate) Azure cloud experience More ❯

in modern PHP 8+ (ideally Laravel/Symfony) and JavaScript/TypeScript (React.JS) being essential to drive their frontend and backend systems. You will be designing and delivering scalable, high-performance solutions from product requirements, ensuring robust observability through metrics and monitoring. You’ll work on event-driven architectures using CQRS, apply SOLID principles, and leverage Docker to build … high-availability, high-throughput platforms. Experience with AWS services is a strong advantage, as you will be given the opportunity to contribute to their cloud based infrastructure. The role also entails mentoring more junior devs with significant chance to progress within the company as the business continues to grow. The role is 4 days a week on More ❯

DevOps Engineer Looking for high calibre, deeply experienced, hands-on DevOps engineers who seek to be recognized as platform technology leaders. Role Summary Senior DevOps engineers experienced with excellent comprehension of modern engineering from toolsets to methods, practices to technologies. High level and deep technical experience with continuous integration, continuous delivery/deployment, particularly Jenkins Uses testing as … Kubernetes, Rancher Working experience with GCP cloud infrastructure/services Experience with infrastructure-as-code: Terraform Experience with GKE, Helm, and Harness Experience with Linux System Administration Understanding of high-availability, disaster-recovery, monitoring and logging at scale Deep hands-on Java (plus Spring framework). Nice to have: Python and Node.js Skills and Experience Consulting experience, preferably More ❯

Engineer Location: London (Largely Remote Working) Permenant - £80000 - £90000 PA Due to the industries this role works in, we require the successful candidate to be able to obtain a high-level security clearance. To qualify for this, you must be a British citizen and have lived permanently in the UK for the last 5 years. Digital Skills are seeking … tools and processes for building, deployment, monitoring, testing and maintenance of infrastructure and applications Develop and maintain policies and procedures for security, compliance, and disaster recovery Optimise infrastructure for high availability, fault tolerance, and cost efficiency Continuously monitor and improve infrastructure and application performance Troubleshoot and resolve infrastructure and application issues Manage and mentor junior DevOps engineers Skills More ❯

to our customer sites. How we work A team of self-motivated individuals with the ability to work unsupervised supporting a mission critical service. Working to towards a 99.999% availability, our collaborative team follows a DevOps approach to provide a service with constantly evolving priorities and growing customer base. As a team, we are working on the goal of … Directory (ADFS, domain management, users/groups, policies, certificates etc.) Infrastructure management and maintenance (COTS hardware & Virtualisation - VMware, Hyper-V) Good knowledge and experience of ITIL Experience of managing high availability environments and systems or with similar critical infrastructure delivery experience. Highly attentive with the ability to deal with changing priorities and context switching. A positive attitude to More ❯

and able to deal with a wide range of issues. Qualification Cisco CCNP routing & switching. JNCIA-Junos certifications. Wireless foundational certifications. Experience 5 + years senior Network engineer supporting high volume, high availability financial trading environment. Experience in delivering and supporting Wireless. Experience of working within multi- team environment. Experience of working in a multi-vendor infrastructure More ❯

disaster recovery, and cloud security, combined with the ability to operate within a fast-paced, scaling SaaS environment. Key Responsibilities Design, implement, and manage Azure-based infrastructure to ensure high availability, scalability, and security. Develop and maintain infrastructure-as-code and automation frameworks to streamline deployment and operations. Lead and test disaster recovery and business continuity plans to … with automating alert systems. Excellent problem-solving and incident management skills. Ability to thrive in a scaling SaaS environment, balancing stability and innovation. Desirable Previous experience in SaaS or high-growth technology companies. Knowledge of containerisation (e.g., Kubernetes, Docker). Scripting/programming skills (e.g., PowerShell, Python, Bash). Seniority Level Mid-Senior level Industry Software Development IT Services More ❯

a skilled and proactive Solace 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 observability using tools like Prometheus … of cloud environments (AWS, Azure, GCP) and 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 programming skills while More ❯

proxies, and DDoS protections. Support a Zero Trust model through segmentation and ZTNA policies. Performance & Low-Latency Optimisation Engineer networks for speed, efficiency, and resilience—particularly in support of high-performance financial systems. Monitor and analyse performance, recommend improvements, and ensure systems meet demanding SLAs. Support colocation near exchanges and manage high-throughput, low-latency routes. Monitoring & Observability … and support root-cause analysis. Collaboration & Project Leadership Act as a key stakeholder in cross-functional teams, working with Infrastructure, Security, DevOps, and Application teams to deliver secure and high-performance systems. Document design standards and mentor others in networking best practices. Lead major infrastructure initiatives from design through to implementation. Support & Innovation Continuously assess the evolving needs of … Security Groups, etc.) Experience designing and managing enterprise-grade LAN, WAN, VPN, and SASE networks Familiarity with Azure networking and hybrid cloud deployments Deep understanding of low-latency and high-availability network design Hands-on experience with network security (Firewalls, Proxies, Remote Access, DDoS, ZTNA) Proficient in Terraform, Ansible, and scripting for infrastructure automation Knowledge of GitOps, CI More ❯

implement VMware-based infrastructure to support multiple VMs across various environments. Build, configure, and maintain virtual machines using vSphere, ESXi, and vCenter. Optimize VM performance and resource allocation. Ensure high availability, scalability, and disaster recovery capabilities. Monitor system health and troubleshoot issues related to virtualization. Collaborate with network, storage, and security teams to ensure seamless integration. Maintain documentation … Horizon. Knowledge of containerization technologies (e.g., Docker, Kubernetes). Scripting skills for automation and orchestration. All profiles will be reviewed against the required skills and experience. Due to the high number of applications we will only be able to respond to successful applicants in the first instance. We thank you for your interest and the time taken to apply More ❯

as well as external vendors, to troubleshoot and optimise production environments Experience Required: 3+ years’ experience in a production-facing engineering or reliability role within financial services or another high-availability technology environment. Strong track record in automation, monitoring, and incident response for distributed or mission-critical systems. Proficiency in scripting and systems programming. Hands-on experience with More ❯

regulations (e.g., FCA, GDPR). Collaborate with stakeholders to understand business requirements and translate them into technical solutions. Lead cloud migration projects and modernisation initiatives across financial platforms. Ensure high availability, disaster recovery, and data security in all cloud architectures. Provide technical leadership and mentoring to development and infrastructure teams. Develop infrastructure as code (IaC) using tools like More ❯

both cloud and on-prem IT operations. Key Responsibilities Lead the design, implementation, and management of cloud infrastructure Oversee AWS migration from on-premise infrastructure, ensuring scalability, security, and high availability Build out greenfield infrastructure environments and plan seamless integration with existing systems Own the full IT infrastructure stack, including Active Directory, Microsoft services, networking, and on-prem … ensure security, reliability, and optimal performance across production and disaster recovery environments Lead cybersecurity initiatives focused on network segmentation, access control, and intrusion prevention Build, mentor, and manage a high-performing infrastructure and DevOps team, fostering a culture of excellence, automation, and reliability Partner with software engineers, quantitative researchers, traders, and risk teams to deliver stable, scalable, and secure … standards Monitor and optimise system performance, cost, and reliability across production, staging, and development environments Ideal Candidate Profile 7+ years of experience in infrastructure, cloud architecture, or DevOps within high-performance trading or capital markets environments Proven experience building and leading infrastructure or DevOps teams Hands-on expertise in AWS architecture, migration, and hybrid (cloud + on-prem) environments More ❯

proxies, and DDoS protections. Support a Zero Trust model through segmentation and ZTNA policies. Performance & Low-Latency Optimisation Engineer networks for speed, efficiency, and resilience—particularly in support of high-performance financial systems. Monitor and analyse performance, recommend improvements, and ensure systems meet demanding SLAs. Support colocation near exchanges and manage high-throughput, low-latency routes. Monitoring & Observability … and support root-cause analysis. Collaboration & Project Leadership Act as a key stakeholder in cross-functional teams, working with Infrastructure, Security, DevOps, and Application teams to deliver secure and high-performance systems. Document design standards and mentor others in networking best practices. Lead major infrastructure initiatives from design through to implementation. Support & Innovation Continuously assess the evolving needs of … Security Groups, etc.) Experience designing and managing enterprise-grade LAN, WAN, VPN, and SASE networks Familiarity with Azure networking and hybrid cloud deployments Deep understanding of low-latency and high-availability network design Hands-on experience with network security (Firewalls, Proxies, Remote Access, DDoS, ZTNA) Proficient in Terraform, Ansible, and scripting for infrastructure automation Knowledge of GitOps, CI More ❯

insights. Integrate and manage real-time market data feeds (e.g., Bloomberg, ICE, CME) and internal trading systems. Build and optimize data models for pricing, risk, and PnL analytics. Ensure high availability and performance of data infrastructure in a low-latency trading environment . Implement data quality checks , monitoring, and alerting systems. Work closely with DevOps and infrastructure teams … understanding of commodities markets , trading workflows, and financial instruments. Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes). Proven ability to work in fast-paced, high-pressure environments with direct exposure to the Front Office. Excellent communication skills and ability to translate technical solutions into business value. More ❯

curiosity, adaptability, and a drive to grow within an exciting, fast paced setting. Why Join Be part of a modern platform redefining how financial services operate. Work in a high-availability cloud environment where reliability and automation are top priorities. Collaborate with exceptional engineers and influence platform strategy. AWS | Platform Engineering | Entertainment | Cloud Infrastructure | Terraform | Kubernetes | EKS | CI More ❯