20 of 20 High Availability Jobs in the City of London

Solace Administrator

Hiring Organisation
BGC Group
Location
City of London, London, United Kingdom
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 ...

Infrastructure Architect

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £854/day
Azure, and/or GCP). Solid understanding of networking, computer, storage, and virtualization. Experience with hybrid and multi-cloud architectures. Knowledge of high availability, disaster recovery, and business continuity design. Familiarity with infrastructure automation and IaC tools (e.g. Terraform, ARM, CloudFormation). Strong understanding of security principles ...

Senior Security Administrator - Palo Alto

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£200 - £400/day
controls, ensuring secure and resilient network operations across enterprise environments. This role is hands-on, need to be comfortable working in complex, regulated, or high-availability environments, partnering with infrastructure, networking, and SOC teams to deliver robust security outcomes. Key Responsibilities: Palo Alto Administer, configure, and support Palo ...

Data Platform Engineer

Hiring Organisation
McCabe & Barton
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £750 per day
Databricks, and related Azure services. Build ETL/ELT processes to transform raw data into structured, analytics-ready formats. Optimise pipeline performance and ensure high availability of data services. Infrastructure & Architecture Architect and deploy scalable data lake solutions using Azure Data Lake Storage. Implement governance and security measures ...

Senior Cloud Infrastructure Engineer

Hiring Organisation
Larbey Evans
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £85,000 per annum
Senior Cloud Infrastructure Engineer Key Responsibilities: Ensure the firms technology environment is continually evolving and is configured in a way that provides a stable, high performing and secure environment Design, implement, and continually manage Azure cloud infrastructure to ensure scalability, security, and high availability Administer and optimize ...

Senior Full Stack Engineer (Golang/Typescript/Kubernetes)

Hiring Organisation
Safe Intelligence
Location
City of London, London, United Kingdom
based frontend systems , primarily utilizing React to craft intuitive and highly functional user interfaces. Productize and enhance our Kubernetes-based cloud platform to ensure high-availability, scalability, and cost-efficient ML workflows. Work proficiently across the entire stack to develop and integrate new features related to model versioning ...

.NET Developer

Hiring Organisation
Lime Street Recruitment Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£50,000
features using .NET and SQL Coordinating sub-projects and engaging directly with business on requirements and functionality Managing live system issues and ensuring high availability and performance The successful candidate will work closely with stakeholders to understand requirements and design robust solutions as we expand our systems … innovation in our technology stack. The development teams in London and the US consist of skilled developers across different disciplines, working together to deliver high-quality solutions. Skills Required We are looking for someone who combines strong technical ability with excellent problem-solving skills. The successful candidate will demonstrate ...

Software Developer

Hiring Organisation
mthree
Location
City of London, London, United Kingdom
required. We’re looking for strong engineers who are keen to learn a new, specialist technology and grow their skillset within a complex, high-impact environment. Full training on Axiom will be provided. You’ll work closely with international engineering teams, contributing to platform development, automation, and infrastructure, while … delivery teams Expand CI/CD, test-driven development, and release automation practices Contribute to architectural decisions, standardisation, and platform design Support a high-availability, business-critical regulatory reporting system Skills & Experience 2–5 years’ experience as a Software Developer or Engineer Strong Python development skills Solid Linux ...

Infrastructure/Reliability Engineer

Hiring Organisation
Stanford Black Limited
Location
City of London, London, United Kingdom
Reliability Engineer - Systematic Hedge Fund The Trading Infrastructure Support Engineer will be part of a highly talented team of support engineers responsible for ensuring high availability of Squarepoint’s mission critical services such Infrastructure as a Service (IaaS), Build & Deploy, Research and Trading. The candidate will be responsible ...

Network DevOps Engineer

Hiring Organisation
Opus Enterprise Ltd T/A Real Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
working on innovative projects that support our hybrid cloud environment and drive automation and security. In your role as Network DevOps Engineer, youll ensure high availability, performance, and security of network systems, leveraging DevOps practices to streamline deployments and operations. Role & Responsibilities: Architect and deploy network solutions across ...

Senior Software Engineer

Hiring Organisation
Randstad Digital
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£53.85 - £61.68 per hour
/innovation team experience with a 'zero-to-one' mindset , combined with corporate grit (processes, ticketing, documentation). Strong knowledge of distributed systems and high-availability APIs . Preferred Qualifications Experience in B2B or enterprise software environments . Ability to define product requirements and deliver ...

IT Systems Administrator

Hiring Organisation
Deerfoot Recruitment Solutions Ltd
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £55,000 per annum
farm of on-site and off-site servers, storage (NAS and iSCSI) and related hardware. Monitor and maintain in-house software applications, ensuring high availability and rapid issue resolution for a 24/7 trading operation. Manage the Microsoft Windows "universe" - administering Active Directory, Group Policy and user ...

IT Systems Administrator

Hiring Organisation
Deerfoot Recruitment Solutions Limited
Location
City of London, London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£30000 - £55000/annum + Benefits
farm of on-site and off-site servers, storage (NAS and iSCSI) and related hardware. Monitor and maintain in-house software applications, ensuring high availability and rapid issue resolution for a 24/7 trading operation. Manage the Microsoft Windows "universe" - administering Active Directory, Group Policy and user ...

Network Specialist

Hiring Organisation
Ncounter LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
trusted as a senior technical authority, taking ownership of routing architecture, contributing to strategic decisions, and ensuring the network can support real-time, high-throughput workloads. Key Responsibilities: Design and operate resilient network architectures across LAN, WAN, data centre, and cloud environments Own and optimise routing and traffic flows … Continuously improve network resilience, throughput, and operational efficiency What Were Looking For: You will be an experienced network engineer who has worked in demanding, high-availability environments where routing stability and performance are critical. Strong practical experience with BGP, OSPF, and multicast networking is essential, alongside confidence working ...

Network Engineer (SC Cleared)

Hiring Organisation
83zero Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
Access and Cisco SD-WAN technologies. As part of this contract, you will play a key role in enterprise-scale network delivery, ensuring high availability, security, and performance across a complex IT landscape . Key Responsibilities: Design, implement, and maintain Cisco SD-Access and Cisco SD-WAN solutions. … Comfortable working in a hybrid environment with some on-site presence in London. If you're an SC Cleared Network Specialist looking for a high-impact role in a banking environment, apply now or reach out for more information ...

Vice President of IT Operations

Hiring Organisation
Tate Recruitment
Location
City of London, London, United Kingdom
hands-on expertise in Entrata and strong IT project management skills to deliver operational excellence and drive innovation across enterprise systems. You’ll lead high-performing teams, collaborate with senior stakeholders, and ensure seamless IT service delivery across applications, infrastructure, and user support. Role & Responsibilities: Entrata Application Service Management … Build and lead a dedicated team to support the Entrata platform, ensuring high availability and performance. Oversee the full application lifecycle: deployment, upgrades, incident resolution, and vendor coordination. Define and implement SLAs, KPIs, and continuous improvement initiatives. Align Entrata capabilities with business needs through stakeholder collaboration. End-User ...

Network Engineer

Hiring Organisation
Ashdown Group
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
networks in a large user environment - Strong Cisco background (ideally CCNP/CCIE) - Knowledge of Layer 2 LAN technologies (VLANs, VTP, STP) - Understanding of high availability technology (VPC, SVL, HSRP) - Routing protocols - SDWAN technologies - CIsco Wireless technology ...

Cisco Network Engineer

Hiring Organisation
Ashdown Group
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
networks in a large user environment - Strong Cisco background (ideally CCNP/CCIE) - Knowledge of Layer 2 LAN technologies (VLANs, VTP, STP) - Understanding of high availability technology (VPC, SVL, HSRP) - Routing protocols - SDWAN technologies - CIsco Wireless technology ...

.NET Developer

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £60,000 per annum
Developer to work out of their plush offices in the heart of London's West End. You will be working on the development of high-availability and highly-transactional .NET/C# applications which will be critical to the launch of their new online music shopping channel. ...

.NET Developer

Hiring Organisation
Lime Street Recruitment Limited
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 50,000 Annual
features using .NET and SQL Coordinating sub-projects and engaging directly with business on requirements and functionality Managing live system issues and ensuring high availability and per click apply for full job details ...