26 to 50 of 279 High Availability Jobs in London

Lead Network Engineer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
environments. - Maintain secure, resilient and scalable network services aligned to business requirements, client expectations and regulatory obligations. - Support disaster recovery testing, failover validation and availability improvement for critical network services. - Monitor network performance, identify risks, resolve complex incidents and drive continual service improvement. - Shape and maintain the technical roadmap … senior or lead network engineer within a complex enterprise environment. - Deep knowledge of enterprise networking, including Layer 2/3, switching, routing, VLANs, segmentation, high availability, wireless and troubleshooting. - Strong experience with Cisco enterprise technologies, including Catalyst, Nexus, Cisco ISE, RADIUS, TACACS+, 802.1X and access control policies. - Strong ...

Application Support Engineer (Cash Equities)

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Equities London (100% office) 12 months (initial) Competitive (Via Umbrella) Overview We are seeking an experienced Application Support Engineer (AVP level) to join a high-performing Application Production Support (APS) team within a leading global investment bank in London. You will play a critical role supporting a low-latency … developers to ensure stability, performance, and continuous improvement of a mission-critical execution environment. This is an excellent opportunity to gain exposure to high-frequency trading systems, global markets, and cutting-edge real-time technologies in a fast-paced environment. Key Responsibilities Provide hands-on Level 1/ ...

Platform Chapter Lead - Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
developer tooling – Backstage especially welcome. Familiarity with tools like Terraform, GitHub Actions and Octopus (or equivalents), and FinOps/cloud cost management. Regulated, highavailability or high‐transaction‐volume domains (travel, retail, payments). What success looks like in the first 12 months A clear platform roadmap ...

Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
multiple development teams to accelerate value delivery, scale our systems, and build the foundation that empowers our engineering organization to thrive. Why Join Ebury? High-Performance, High-Growth Environment: Be part of a rapidly scaling FinTech where your impact is recognized, valued, and directly rewarded. A Culture … Excellence: We are committed to building a world-class platform and look for individuals who share our passion for high-quality engineering. Ownership and Autonomy: We empower you to take charge of your work, voice your ideas, and make a tangible difference. Inclusive & Collaborative: We celebrate diversity, foster genuine ...

Lead C++ / Java Developer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
responsible for designing, building, and operating mission‐critical FX market infrastructure and matching platforms using C++ and Java. The role focuses on low‐latency, high‐throughput distributed systems with strict availability, resiliency, and data integrity requirements.This role owns technical outcomes for complex components and services, influences architecture … workflows.* Own technical delivery for key platform components, ensuring alignment with LSEG architectural principles, performance standards, and operational controls* Build and evolve low‐latency, highavailability systems handling high message volumes and time‐critical processing.* Ensure systems meet non‐functional requirements, including latency, throughput, resiliency, fault tolerance ...

Vice President, Fullstack Software Engineer (Java/React)

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
your team. Collaborate directly with colleagues across Private Markets and the wider Aladdin organization to build and deliver market leading software at pace. Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. Collaborate with product managers, designers, and other stakeholders ...

Engineering Manager – Payments, BACS, CHAPS

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Responsibilities Deliver and continuously improve payment services across UK payment rails (BACS, CHAPS, SWIFT). Ensure systems meet high standards for availability, resilience, security and regulatory compliance. Own delivery outcomes in partnership with Product, Technology, Risk and Operations. Lead, coach and develop a team of engineers, supporting both … performance and growth. Establish clear priorities and ensure focus on high-impact outcomes. Drive engineering excellence in system design, testing, deployment and observability. Identify risks and dependencies early, taking action to maintain delivery momentum. Foster strong collaboration across teams, ensuring alignment and effective communication. Own operational performance, including incident ...

Vice President, Head of Messaging & Collaboration

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Online, Microsoft Teams, SharePoint Online, OneDrive, Teams Phone and associated collaboration technologies. You will drive platform modernisation, cloud transformation and service optimisation while ensuring high levels of availability, security and user experience.Working closely with senior stakeholders across Technology, Cyber Security, Enterprise Architecture, Risk, Compliance and Business Technology teams … cloud adoption, platform modernisation and continual service improvement.* Provide strategic leadership across Messaging & Collaboration engineering, delivery and operational support teams.* Build, develop and mentor high-performing engineering teams, fostering a culture of collaboration, accountability and continuous improvement.* Champion innovation and the adoption of emerging Microsoft technologies, including Microsoft Copilot ...

Senior Software Engineer London, Greater London, England, United Kingdom

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
functional requirements, collaborate on designs, and iterate on technical solutions. What you’ll do: Contribute and lead on the development and scaling of a high throughput, high availability, public‐facing multi‐tenanted application Lead the design and implementation of innovative solutions for complex end‐user‐facing … experience in development roles Strong proficiency in recent versions of Java (JDK 21 or newer) and/or Kotlin A strong commitment to developing high‐quality, testable code, including unit, integration, and end‐to‐end testing, while actively considering operational concerns such as observability, logging, and alerting throughout ...

Senior Infrastructure & DevOps Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
company’s growth. You’ll work closely with software engineers, data teams, and product stakeholders to ensure our systems are robust, secure, and high-performing. What You’ll Do: In this role, you’ll take ownership of key responsibilities that help drive team and business success. Your … safer deployments Leading infrastructure automation and configuration management using tools like Terraform and Ansible Monitoring system performance and proactively identifying areas for improvement Supporting high-availability systems and ensuring disaster recovery plans are in place Collaborating with engineering teams to optimise deployment workflows and system architecture Managing secrets ...

Senior OpenShift / Kubernetes Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
reusable container platform standards, templates, and base images. Support business application teams in adopting cloud-native technologies and containerized workloads. Provide architectural guidance for high availability, disaster recovery, and workload resilience. Develop and maintain infrastructure automation using Infrastructure as Code (IaC) principles. Build reusable automation frameworks using Ansible ...

Senior OpenShift / Kubernetes Platform Engineer (Hybrid Cloud)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
reusable container platform standards, templates, and base images. Support business application teams in adopting cloud-native technologies and containerized workloads. Provide architectural guidance for high availability, disaster recovery, and workload resilience. Automation & Infrastructure as Code Develop and maintain infrastructure automation using Infrastructure as Code (IaC) principles. Build reusable ...

Devops Engineer - SC Cleared

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Role We're seeking an experienced Senior DevOps Engineer to join a highly skilled engineering team responsible for supporting and enhancing a business-critical, high-availability platform that operates as part of the UK's essential financial infrastructure. This is an exciting opportunity to work within a complex ...

Principal Engineer, CoinDesk Data Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
that provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong … shape the frameworks and processes that drive our global teams forward. We refuse to compromise on quality and seek problem solvers who thrive on high-impact technical challenges. The Team: CoinDesk Data Engineering The CoinDesk Data Engineering Team builds the high-performance infrastructure that powers the world ...

DevOps Engineer - AWS & Terraform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
idea to production rapidly and safely. You’ll champion modern GitHub and CI/CD administration practices — including ownership of enterprise GitHub runners for highavailability build/test/deploy workloads — and lead the adoption of GitHub Copilot and AI‐assisted development from a central platform perspective. ...

Software Developer | Market Making Technology

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Summary Market Making at Marex is a critical and growing business, operating across multiple asset classes and geographies. The Market Making businesses have a high degree of complexity, operating with multiple workflows and booking systems, across different Marex entities and in different regions. The business uses several different technologies … future success of the Market Making business as we seek to drive technology-led growth. Responsibilities Role specific: Design, develop and maintain high-quality for internal and external facing applications. Build scalable, resilient and high-performance services that support multiple business streams across Marex. Collaborate closely with product ...

Sr Engineering Team Lead - Database - Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
team to manage a vast estate of database technologies.You will be responsible for the well-being of the team, coaching, mentoring and growing a high-performing team in bringing value by working on high-impact solutions. You will support the team with occasional hands-on involvement … ownership of vendor negotiations and explaining costs to the business.### Skills Required* Python* Java* System design* Engineering principles* AWS* GCP* Platform engineering* SQL* NoSQL* High availability* Scalability* Security* Operational excellence* Service reliability engineering* Configuration management* Ansible* Packer* CI/CD* GitHub Actions* Infrastructure as Code* Terraform* Containers* Docker ...

Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Premise, Hosted and Public Cloud platforms. It requires proficiency in system integration, support, and continuous improvement, with an emphasis on standardisation and repeatability through high levels of automation and orchestration. The candidate will be expected to provide exceptional service levels to our stakeholders, comprehend key business processes, and understand … support across VMware and Microsoft Hyper-V platforms, together with container technologies such as Kubernetes. This should also include enterprise integration experience with security, high availability, networking, load balancing aspects to deliver applications and infrastructure. Experience administering Microsoft 365 services including Exchange Online, Entra ID, Teams and SharePoint ...

Database Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
class platform to amplify our teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm. Take the next step in your career. The role … scaling distributed database services across on‐premises and AWS environments Supporting large-scale deployments of PostgreSQL, Microsoft SQL Server, MySQL and CockroachDB, ensuring high availability, disaster recovery and performance Contributing to the design and implementation of automation for database provisioning, upgrades, replication and monitoring using Python, Ansible ...

Director, Head of Technology Resilience and Production Operations

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
decision on prioritisation, resourcing and design configurations for tooling, products and systems pertaining tot the Technology Resilience and Production Operations function* Accountable for delivering high quality management information and dashboards that provide a comprehensive view of the Technology Resilience and Production Operations estate. Deliver senior stakeholder communications by translating … managing Technology service design, acceptance and continuous performance of Technology Production operations* Accountable for ensuring new technology or changed services establish document standards for availability, capacity, security and continuity to ensure they operate at peak performance once live.* Accountable for tracking the operational readiness for in-scope projects ...

DevOps Engineer (Product) DevOps Engineer - Product (London, UK)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
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 ...

Cloud Native DevOps Engineer - (AWS)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
your considering As an Cloud DevOps Engineer in our Cloud & Custom Applications practice, you will work on mission-critical systems that require high availability, security, and scalability. You will be responsible for building, automating, and optimizing cloud-based infrastructure while ensuring compliance with security standards. Hybrid working … tools such as Terraform or CloudFormation. Implement CI/CD pipelines, enabling continuous integration and continuous deployment for mission-critical applications. Monitor system performance, availability, and security, implementing observability best practices. Work in an Agile environment, engaging with stakeholders to understand requirements and deliver iterative improvements. You can bring ...

Senior Network Site Reliability Engineer

Hiring Organisation
Appcast
Location
London, UK
around the world. As our product and infrastructure scale, we are looking for a Senior Network Site Reliability Engineer to help strengthen the reliability, availability, and scalability of our production environment.In this role, you will focus on cloud automation, Infrastructure as Code, network reliability, and operational excellence across … production.Maintain and develop the building blocks of our IaC terraform codebase.Responsible for building, maintaining and optimizing Amazon Load Balancers, ensuring efficient traffic distribution and high availability for applications.Configure and maintain Amazon CloudFront distributions to accelerate content delivery and improve end-user experience.Develop and build Governance policies ...

Devops SRE

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
environments. Strong expertise in deploying and managing production‐grade Kubernetes clusters and containerised services. Hands‐on experience with Kubernetes (k8s) and Containers in live, highavailability environments. Proven experience designing and implementing CI/CD pipelines for automated build, test, and deployment workflows. Proficiency in programming languages such … work effectively in fast‐paced, dynamic environments and adapt quickly to change. Strong analytical and problem‐solving abilities with a focus on delivering high‐quality outcomes. #J-18808-Ljbffr ...

SQL Database Administrator

Hiring Organisation
VIQU IT
Location
London, Bishopsgate, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600/day
play a key role in delivering database solutions, supporting application migrations, and ensuring SQL environments are secure, resilient, and built to a consistently high standard. Skills required from the SQL Database Administrator: Active SC Clearance (mandatory). Experience in a Critical National Infrastructure environment Strong commercial experience administering Microsoft … Server environments. Experience working with SQL Server 2016 through to SQL Server 2025. Excellent knowledge of Always On Availability Groups, Windows Clustering and High Availability/Disaster Recovery technologies. Experience administering SSRS, SSIS and SSAS. Strong understanding of SQL Server upgrades, migrations and performance optimisation. Experience supporting ...