17 of 17 Contract High Availability Jobs in London

AWS Technical Architect

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £725/day
remote +Outside IR35 + £550 - £650 a day +SC cleared role - current active clearance is essential As an AWS Technical Architect, you'll take high-level customer requirements and turn them into practical, secure, and production-ready AWS solutions. You'll work closely with CloudOps, DevOps, engineering teams … account communication and outbound traffic to external services. Cost Optimization: Designing cost-effective solutions by selecting appropriate AWS services and implementing cost management strategies. High Availability and Disaster Recovery: Designing architectures for high availability and disaster recovery using AWS services. Performance Optimization : Tuning configurations and leveraging ...

DevOps Engineer

Hiring Organisation
VIQU IT
Location
London, Charing Cross, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £500/day Outside IR35
testing. Key Skills & Experience from the Azure DevOps Engineer: Active SC Clearance ideal/lapsed considered Advanced Azure Engineering Strong experience designing for high availability Deep understanding of Azure-native services and architecture patterns Github actions Infrastructure as Code (IaC) Expert-level proficiency with Terraform and/… advanced pipelines using GitHub Actions Strong understanding of pipeline orchestration, automation, and deployment strategies Key Responsibilities of the Azure DevOps Engineer: Design and implement high availability Azure architectures, including regional failover and load balancing strategies embedded within IaC templates Build and maintain scalable, reusable Terraform and/ ...

Application Support Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
existing services. Work closely with development teams, business analysts, architects, all infrastructure teams to design and setup new systems, improve existing platforms (resilience, high availability, performance, low latency) Coordinate and organise changes with external vendors, markets, ECNs. Plan, schedule, implement and document the release/change activities. Improve ...

Senior Engineer

Hiring Organisation
WRK DIGITAL LTD
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £56.25 to £62.50 per hour
+3 months) Were currently supporting a leading tech consultancy, who are looking for a Senior Engineer to join an L3 support team on a high-priority contract basis, supporting a large-scale cloud estate of 20+ applications and services . This is a fast-paced, hands-on role where … youll play a key part in ensuring platform stability, resolving complex incidents, and maintaining high availability across production environments. The Role Youll be embedded within a DevOps-focused support team, working across cloud platforms and modern engineering environments to manage BAU operations and critical incidents. Key responsibilities include ...

Network Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £530/day
site) Level: Professional (Band P3) Are you a CCNP-level engineer with a passion for hybrid cloud environments? We are looking for a high-caliber Network Engineer to join our IT Infrastructure and Operations team for a critical 6-month project. This role sits at the heart … Institutions or UK Government sectors. Familiarity with Zero Trust architecture and modern segmentation. Why Apply? This is a chance to provide strategic oversight on high-availability systems within a regulated banking environment. You'll work with a talented IT Operations team and managed service providers to deliver reliable ...

Network Engineer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £530 per day
site) Level: Professional (Band P3) Are you a CCNP-level engineer with a passion for hybrid cloud environments? We are looking for a high-caliber Network Engineer to join our IT Infrastructure and Operations team for a critical 6-month project. This role sits at the heart … Institutions or UK Government sectors. Familiarity with Zero Trust architecture and modern segmentation. Why Apply? This is a chance to provide strategic oversight on high-availability systems within a regulated banking environment. You'll work with a talented IT Operations team and managed service providers to deliver reliable ...

Oracle Xstore Technical Analyst / Consultant

Hiring Organisation
Staffworx Limited
Location
London, United Kingdom
Employment Type
Contract, Work From Home
maintain integrations across OMS, payments, order shipping, customer queue and inventory systems. Manage critical production incidents, severity 1 escalations and root cause analysis in high availability environments. Perform SQL and XML based troubleshooting, configuration, data validation and continuous improvement. Conduct SIT and UAT support, defect resolution, unit testing ...

WebMethods Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£600 - £650 per day
management, and microservices. Managing B2B protocols including EDI, AS2, FTP, HTTPS, XML, JSON, REST, and SOAP. Optimising system performance, capacity planning, and ensuring high availability. Collaborating with stakeholders, providing technical leadership, and supporting DevOps practices with CI/CD pipelines in cloud environments. What you'll bring: Deep expertise … Axway API Gateway and enterprise integration patterns. Hands-on knowledge of EDI, B2B protocols, XML, JSON, REST, and SOAP. Strong understanding of performance tuning, high-availability design, and cloud deployment. Excellent communication and stakeholder management skills. Must hold or be eligible for SC security clearance. ...

DevOps Platform Admin

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£465 - £466 per day
supporting internal teams with configuration, access, and platform management. What you'll be doing: Managing and maintaining GitLab, Jira, and Confluence platforms to ensure high availability and optimal performance Supporting internal teams with platform configuration, access management, and troubleshooting Ensuring the security and integrity of the tooling infrastructure ...

IT Support Engineer

Hiring Organisation
VIQU IT
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 150 - 250 Daily
user environments. This role requires a structured and analytical approach to problem-solving, with the ability to manage competing priorities in a fast-moving, high-availability environment. You will collaborate closely with technical teams across the business to ensure reliable service delivery, operational continuity, and continuous improvement ...

IT Support Engineer

Hiring Organisation
VIQU IT
Location
London, Fleet Street, United Kingdom
Employment Type
Contract
Contract Rate
£150 - £250/day
user environments. This role requires a structured and analytical approach to problem-solving, with the ability to manage competing priorities in a fast-moving, high-availability environment. You will collaborate closely with technical teams across the business to ensure reliable service delivery, operational continuity, and continuous improvement ...

Senior Kotlin Engineer (XP, GCP) - Investment Banking - London

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £800 per day
Senior Kotlin engineer to support and extend a cloud-hosted platform used for bookbuilding issuances within Investment Banking Capital Markets. You will join a high-calibre London-based front office engineering team working on a next-generation issuance platform replacing a legacy bookbuilding system. This is a hands … including mob programming, test-driven development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, collaborating closely to maintain high standards of code quality, system reliability, and performance. Required & Desirable Skills Strong commercial experience building backend services using Kotlin Experience with event-sourced ...

Kotlin Developer

Hiring Organisation
Deutsche Bank CWS
Location
City of London, London, United Kingdom
Employment Type
Contract
Kotlin engineers to support and extend a cloud-hosted platform used for bookbuilding issuances across Investment Banking Capital Markets. These roles will join a high-calibre London front-office engineering team building a new issuance platform to replace a legacy bookbuilder. This is a hands-on engineering role with … first development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, working closely as a team to maintain a high standard of code quality and system reliability. The skills you'll need: Strong commercial experience building backend services in Kotlin Experienced with event sourced ...

Data Centre Architect

Hiring Organisation
Infoplus Technologies UK Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
guidance of senior architects. Data Centre Architecture & Design Design and maintain scalable, secure, and highly available data centre infrastructure architectures. Create low level and high level designs (LLD/HLD) for on prem and hybrid DC environments. Support architecture decisions for server, storage, network, backup, and virtualisation platforms. Ensure … centre networking (core, aggregation, access layers) Work closely with operations teams to ensure design to run alignment. Reliability, Capacity & Resilience Design DC architectures for high availability, redundancy, DR, and fault tolerance. Support capacity planning, performance optimisation, and lifecycle management. Participate in failure analysis, RCA reviews, and corrective architecture ...

Solutions Architect

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £650/day
critical utility infrastructure through advanced data protection, immutable backup strategies, and comprehensive disaster recovery (DR) capabilities. Key Responsibilities IT/OT Integration: Architect secure, high-availability interfaces connecting enterprise systems with critical industrial control systems (ICS/SCADA), utilizing industry blueprints like the Purdue Model. Data Resilience & Immutability … maintain end-to-end Business Continuity and Disaster Recovery (BCDR) architectures to guarantee 24/7 uptime of critical operations. Architecture Governance: Produce high-level (HLD) and low-level designs (LLD) utilizing enterprise modeling standards like TOGAF and ArchiMate. Requirements Proven track record as a Solutions Architect within ...

M365 SME

Hiring Organisation
e2e Infosys
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600/day
Define target-state architecture for FIS IST across ATM, POS, and digital payment channels Establish high availability, active-active, and disaster recovery designs Lead architecture blueprints covering transaction routing, authorization, clearing, and settlement flows 10+ years in payment switching with deep expertise in FIS IST platform Proven experience ...

DevOps Engineer - ArgoCD

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
foundational products and services that standardise and accelerate the adoption of Kubernetes and cloud technologies across the bank. These products will be consumed by high profile projects such as mobile banking to enable secure, automated, and resilient cloud-native deployments. This is a hands-on engineering role focused … gateways. Experience delivering business-critical systems at scale. Proficiency in Python for automation and tooling. Familiarity with proactive monitoring, capacity planning, and ensuring high availability. IND_PC3 Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy. ...