16 technical architect jobs found in London

Location: LondonHybrid: 3 days / weekDuration: Initial 6 monthsRate: Inside IR35 The OpportunityOur client, a global insurance organisation operating within a highly regulated environment, is looking for an experienced Technical Architect with strong AS/400 (IBM iSeries) expertise to join their Application Solutions team.This role will play a key part in several high-profile migration and transformation programmes, helping to modernise critical applications while ensuring stability across existing platforms. Key Responsibilities Define and deliver technical architecture for IBM iSeries / AS/400 applications. Lead migration and modernisation projects involving legacy systems. Collaborate with business, technical, and third-party teams to deliver scalable solutions. Produce architecture roadmaps, solution designs, and technical documentation. Ensure solutions align with enterprise standards, security requirements, and business objectives. Provide technical leadership and guidance...

Technical Architect Contract 3 Months Initially Hybrid Working - London Scope Overview The B2 lead will scope and produce implementation briefs across: CRM: new standalone B2C HubSpot instance, sales funnel architecture, data model Marketing technology stack: landing page platform, tracking layer, attribution, multi-channel lead nurture Payment infrastructure: multiple funding routes including government loan, self-funded, and employer part-payment Assessment of existing systems for B2C applicability, including records, finance, and content management Telephony decision for the B2C sales and admissions team Candidate Profile Essential: Proven B2C technology architecture experience in a consumer-facing business context Systems integration design HubSpot CRM in a consumer context, including awareness of its limitations Payment infrastructure architecture across multiple funding routes Comfortable making architecture calls with incomplete information under time pressure

Role: ServiceNow Platform Architect Location: Wokingham, UK Type of job: Contract Mode of work: Onsite JD: The ServiceNow Platform Architect is responsible for defining the overall architecture, strategy, and governance of the ServiceNow platform across the organization. This role ensures scalable, secure, and high-performing solutions aligned with enterprise architecture standards and business objectives. Responsibilities * Lead the design and implementation of end-to-end ServiceNow solutions, including ITSM, ITOM, ITBM, ITAM, HRSD, and other ServiceNow applications. * Collaborate with business stakeholders, enterprise architects, and technical teams to define the architectural vision and roadmap for ServiceNow implementations. * Maps ServiceNow’s AI capabilities—such as Now Assist, Agentic workflows, and AI Control Tower—to business objectives * Oversee the customization and configuration of ServiceNow modules, ensuring best practices and scalability. *...

Integration Architect London - Hybrid (4 days office Mandatory) Fixed Term Contract - 1 Year £85,000pa - £120,000pa My client is looking for an Integration Architect with Hands-on experience ideally within a Banking Domain. Event driven Architecture, either Hands-on KAFKA or NATS Hands on Integration Architect, driving real-time Ledger (RTL), Payments, and FX systems integration within a large banking platform. Deep integration expertise + cloud-native mindset Strong communicator and technical leader Familiar with AI-assisted development tools NATS experience is required (Kafka/Pulsar accepted) Key Responsibilities: Define and own target-state integration architecture aligned with enterprise standards Lead end-to-end integration delivery across multiple systems and teams Design event-driven, API-first, cloud-native solutions (NATS, REST, async messaging) Create architecture artefacts (blueprints, APIs, ADRs) Act as integration authority across platforms and...

Senior Java Engineer - FX eTrading** (Contract) Duration: 12 Months (Possibility for extension) Location: London/Hybrid (4 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Profile As a Senior Java Engineer, you will play a pivotal role in delivering resilient and secure systems that meet the demands of modern trading. You'll collaborate closely with product, trading, and infrastructure teams to create seamless end-to-end features-from user interfaces to robust backend services. Embrace the latest AI coding tools to enhance delivery speed, code quality, and developer experience. Key Accountabilities: Architect and Implement: Design scalable, event-driven, microservices-based backend components, including APIs, market data, order/risk workflows, and real-time streaming capabilities. Optimise Performance: Focus on improving latency, throughput, and reliability across the entire stack. Implement observability practises...

Job Title: AI Architect Contract: 6 Months Location: Flexible / Remote Day Rate: £550 - £750 (Inside IR35) Start Date: ASAP Role Overview We are seeking an experienced AI Architect to play a critical role within a large-scale digital and technology transformation programme. This is a unique opportunity to help shape and secure the adoption of AI, LLMs, and Agentic systems within a complex, enterprise environment. You will operate at the intersection of architecture, security, and innovation, driving the safe and scalable use of advanced AI technologies while influencing strategic direction across the organisation. Key Responsibilities Design and evolve secure AI architecture roadmaps, ensuring alignment with broader technology and security strategies Lead the secure design, implementation, and governance of AI, LLM, and Agentic systems Develop and embed AI security standards, policies, and best practices across the organisation Conduct and maintain threat models and risk...

AWS DevOps Engineer London - 4 days per week (non-negotiable) 12 months initial contract Inside IR35 - £550 Asap Start We are supporting a global financial services client (hedge fund) on the hire of a mid-level AWS DevOps / Platform Engineer to work within a high-performing technology environment. This is a hands-on engineering role, focused on building and supporting cloud infrastructure, CI/CD pipelines, and platform reliability. Role Responsibilities Build and maintain AWS cloud infrastructure Develop and manage Infrastructure as Code (Terraform) Build and optimise CI/CD pipelines (GitHub Actions, Jenkins or similar) Support containerised environments (Docker, Kubernetes / EKS) Ensure platform stability, monitoring, and performance Support deployments, release cycles, and environment setup Work closely with engineering teams to enable delivery and best practice  Core Requirements 4+ experience in DevOps / Cloud Engineering Strong hands-on experience with AWS Experience with...

Data Engineer-MUST HAVE CURRENT SC&NPPV3-Inside IR35 We are recruiting for exciting opportunity for a Data Architect to join a high-profile programme currently moving into Phase 2 of its design. This role will focus on evolving an existing data model to support new application requirements, including terabyte-scale data processing, digital media data, and enterprise-aligned architecture. You'll play a key role in shaping scalable solutions and supporting advanced data-driven capabilities in an Agile environment. Key Responsibilities: Enhance and develop the target data architecture and logical data models Design and implement Elasticsearch structures (indices, documents, fields)Lead data mapping, transformation, and integration activities Produce core artefacts (data dictionaries, mapping docs, architecture definitions) Support data lifecycle management (archiving, upgrades, decommissioning) Ensure alignment with enterprise data standards and governance Act as the SME...

Lead Backend Software Engineer – Data Services Federated Data Services | Distributed Systems | Apache Spark | DataFusion | Python | Kubernetes Location: London (2 days per week onsite) Rate: £700–£800 per day (Outside IR35) Duration: Initial 6-month contract with likely extension Overview We're looking for an experienced Lead Backend Software Engineer to join a high-profile programme building secure, cloud-native data services that will support data-driven research and innovation at national scale. This is a founding engineering role, offering the opportunity to shape the architecture, engineering standards, and core data services from the ground up. Working closely with the Engineering Manager and a small team of senior engineers, you'll establish the technical foundations for a complex federated data platform operating within a highly regulated environment. We're looking for someone who enjoys building from first principles, thrives in ambiguity, and can balance strategic...

OpenShift Architect Initial 3-Month Contract Remote Working £650 - £700 p/day, Inside IR35 We're working with a leading Global IT Services Provider who are looking for an OpenShift Architect to support a large-scale cloud migration programme. This role will focus on migrating a portfolio of microservices-based applications from an on-premises cloud environment to AWS. Key responsibilities: Lead the architecture and design of a large-scale application migration to AWS Produce high-level and low-level solution design documentation Provide technical guidance on migrating microservices-based applications Design and support container platform solutions using EKS, ECS and OpenShift Collaborate with technical and business stakeholders to define migration strategies Contribute to AWS cost modelling and provide commercial considerations for proposed solutionsRequired experience: Proven experience delivering large-scale cloud migration programmes Experience supporting large-scale...

Purpose Resolve urgent and critical incidents on their AWS hosted estate. Ensure the infrastructure is secure, resilient, and highly available, following agreed processes. Provide hands-on support for ongoing operations, problem-solving, implementations, system upgrades, and time-critical operational troubleshooting. Work effectively with colleagues and stakeholders, demonstrate leadership, and become established as an approachable subject matter expert. Key Duties Critical situation management for the operation and maintenance of the Hosting and Infrastructure Act as the AWS and cloud infrastructure SME in response to client questions Sharing your expertise. Work with colleagues to ensure strict adherence to the contract and established good practice. Person Specification Technical Strong knowledge of AWS services, including EC2, S3, RDS, Route 53, WAF, IAM, Lambda, VPC and more (see below) Strong proficiency in the Windows ecosystem, including: Windows Server 22...

Network Architect +18 months + +DV cleared +On site in Hampshire +Outside IR35 +£650-£700 a day We are seeking an experienced Network Architect to join a high-profile MOD programme delivering secure, mission-critical network capabilities. This is a hands-on architecture role requiring deep technical expertise across modern data centre and wide area networking technologies. Working within a highly secure environment, you will be responsible for designing, assuring and evolving complex network architectures that support large-scale digital transformation and operational requirements. Key Responsibilities Design and develop secure network architectures for enterprise and defence environments. Produce high and low-level network designs, technical documentation and implementation plans. Lead network architecture decisions across data centre, campus and WAN environments. Provide technical assurance and governance throughout the project lifecycle. Collaborate with engineering,...

Network Architect - DV Cleared 15+ Month Contract Outside IR35 £650-£750 per day On-site in Hampshire Active DV Clearance required before applicationWe're recruiting for an experienced DV Cleared Network Architect to join a major MOD programme delivering highly secure, mission-critical network infrastructure. This is a long-term contract offering the opportunity to shape complex network architectures within one of the UK's most technically challenging environments. You'll play a key role in the design, assurance and evolution of secure enterprise network solutions, working alongside engineering, security and delivery teams to support large-scale digital transformation. What You'll Be Doing Design secure, resilient network architectures for enterprise and defence environments. Produce High-Level Designs (HLDs), Low-Level Designs (LLDs) and supporting technical documentation. Lead architecture decisions across data centre, campus and WAN environments. Provide technical governance...

What You'll Be Doing - Provide technical leadership across AI-enabled software and DevOps engineering teams - Set architectural direction for API-first design, system integration, and platform enablement for AI - Lead the evolution of legacy or existing applications towards modern, service-based and API-driven architectures - Define and guide integration patterns between applications, platforms, and AI services - Make informed decisions on when and how emerging integration approaches (e.g. protocols such as MCP) should be applied as part of broader system design - Work closely with architects, product teams, data scientists, and platform engineers to deliver end-to-end solutions - Ensure solutions meet appropriate standards for security, resilience, performance, and operability - Anticipate and manage architectural and operational risks associated with AI-enabled systems - Champion strong engineering practices across software development, DevOps, and platform engineering...

Streaming/Event-Driven Engineer (Kafka Specialist) 6-Month contract - Inside IR35 - up to £550 per day London based - hybrid working - 3 days a week on site We are seeking an experienced Streaming / Event-Driven Engineer (Kafka Specialist) to own and evolve our event-driven architecture and real-time data streaming platform. You will be responsible for designing, building and optimising scalable event-driven solutions that enable reliable, high-performance data movement across distributed systems. Working closely with engineering, architecture and platform teams, you will help establish best practices for event modelling, stream processing and system integration within a modern microservices environment. Key Responsibilities Own the design and implementation of event-driven architecture across the organisation. Design, build and maintain scalable real-time data pipelines using Kafka technologies. Develop stream processing applications using Kafka Streams and ksqlDB. Implement...

Senior Data Engineer – Leading Bank company City of London Our client, a market‑leading Banking company based in the City of London, is looking to hire a Senior Data Engineer on a 6 months contract to support major global financial projects. You’ll work closely with senior engineering leadership, data specialists, and cross‑functional stakeholders to deliver high‑impact data solutions across the business. This is a highly collaborative role with the opportunity to shape data architecture, build modern pipelines, and contribute to large‑scale migration and regulatory data initiatives. Key Responsibilities * Partner with engineers across multiple systems to understand data availability, structure, and dependencies * Design and develop queries, scripts, and transformations to migrate data into new platforms * Collaborate with solution architects to design migration‑day data processes for partner onboarding * Implement robust data quality checks,...