24 security architect jobs found in London

Summer-Browning Associates is currently supporting our central government client, who is seeking a Security Architect. This position is for an initial 12-month contract assignment, with the possibility of extension. Location: London The ideal candidate will hold an active security clearance and have a strong background in Security Architecture, along with the following skills and experience: A solid understanding of High-Level Security Architecture (HLD) and a secure-by-design approach. Experience leading security architecture for large-scale cloud hosting (specifically Azure and GCP) in high-threat government Tier 2 secure environments. Extensive knowledge of security architecture, including identity management, device security, workstation protection, cloud hosting, collaboration tools, networking, cryptography, operations, and data governance. Strong understanding of secure DevOps practices, CI/CD controls, and Infrastructure as Code (IaC) hardening. Experience applying...

Role Title: Security Architect Duration: contract to run until 30/09/2026 Location: London or Southampton hybrid working 3 days per week onsite Rate: up to £496.80 p/d Umbrella inside IR35 Role purpose / summary Architecture & Design: Develop secure architectures and reference patterns across cloud, infrastructure, applications, and data platforms. Ensure alignment with business goals, risk appetite, and regulatory requirements. Solution Delivery: Provide architectural guidance during project lifecycle (HLD/LLD), review designs, and ensure solutions meet security requirements. Risk & Threat Management: Conduct threat modelling, assess vulnerabilities, and ensure appropriate mitigating controls are designed and implemented. Governance & Standards: Define and maintain security policies, standards, and guardrails. Ensure adherence to architectural principles and regulatory obligations (e.g., GDPR, FCA). Collaboration: Partner with engineering, cloud, network, IAM, and...

Role Title: Security Architect Duration: contract to run until 30/09/2026 Location: London or Southampton hybrid working 3 days per week onsite Rate: up to £503.24 p/d Umbrella inside IR35 Role purpose / summary Architecture & Design: Develop secure architectures and reference patterns across cloud, infrastructure, applications, and data platforms. Ensure alignment with business goals, risk appetite, and regulatory requirements. Solution Delivery: Provide architectural guidance during project lifecycle (HLD/LLD), review designs, and ensure solutions meet security requirements. Risk & Threat Management: Conduct threat modelling, assess vulnerabilities, and ensure appropriate mitigating controls are designed and implemented. Governance & Standards: Define and maintain security policies, standards, and guardrails. Ensure adherence to architectural principles and regulatory obligations (e.g., GDPR, FCA). Collaboration: Partner with engineering, cloud, network, IAM, and...

Contract Role - Security Architect Location: Hybrid - Wokingham or Warwick (1-2 days onsite per week) Contract: 6 Months (likely extension) IR35: Inside IR35 Security Clearance: Active SC Clearance Required Role Overview Our client is seeking an experienced Security Architect to support a major internal programme responsible for delivering capabilities that underpin critical infrastructure operations. This role will embed within an agile delivery programme while also contributing to the wider Security Architecture Community of Practice, working alongside enterprise and domain security architects to strengthen security architecture practices across the organisation. The successful candidate will provide security architecture leadership for an internal application within the programme, ensuring security is embedded throughout the development lifecycle using secure-by-design and shift-left principles. You will work closely with engineering, architecture, and delivery teams to...

Technical Security Architect Must have an Active DV Clearance About the Technical Security Architect role We're seeking a highly skilled Technical Security Architect to take the lead on embedding security across the design, development, and integration of complex network infrastructures. Working within an Agile Scrum environment, the Technical Security Architect will play a vital part in shaping secure platforms by applying Secure by Design and NIST principles throughout the delivery lifecycle. What you'll do as a Technical Security Architect Lead the design and delivery of secure infrastructure solutions across large-scale programmes. Integrate security controls and considerations into network architecture, ensuring alignment with Secure by Design methodologies. Act as the security subject matter expert within Agile Scrum teams, collaborating closely with architects, integrators, and testers. Contribute to the development of security-enforcing capabilities across platforms...

Application Architect - Contract Location: London (2-3 days per week on-site) Contract: 6 month Rate: £650 - £700 per day A leading international professional services organisation is seeking an experienced Applications Architect to support the selection, design, and global rollout of enterprise-grade applications across a complex, distributed environment. This role requires strong architectural capability across Microsoft 365, Azure, SaaS/COTS platforms, and enterprise integrations. You'll work embedded within the Strategy & Architecture function, supporting governance, design assurance, and technical leadership across multiple ongoing initiatives. Key Responsibilities: Act as the technical lead for new applications and cloud-hosted SaaS projects Own architectural design, governance, and technical decision-making Produce detailed architecture artefacts including HLDs, LLDs, patterns, and standards Support the global rollout and adoption of enterprise applications...

Senior Architect – Aviation Sector Location: London/Heathrow Our prestigious architecture client is seeking a talented and experienced Senior Architect to join their dynamic team, focusing on exciting projects within the aviation sector. This is an initial 6-month contract role, with the likelihood of this being extended further or even being made permanent. If you excel in design, technical detailing and specification writing—especially with experience related to Heathrow or Gatwick standards—this is the opportunity for you! About the Role: As a Senior Architect, you will play a crucial role in delivering high-quality, regulated projects within an innovative, multi-disciplinary environment. Your experience in the aviation sector will be invaluable as you collaborate with teams to produce detailed architectural designs and solutions that meet rigorous standards. Why Apply? Work on complex, large-scale projects in the aviation sector Join a collaborative team that values...

Summer-Browning Associates is currently supporting our central government client, who is seeking an Enterprise Architect. This position is for an initial 12-month contract assignment, with the possibility of extension. Location: London The ideal candidate will hold an active security clearance and have a strong background in Enterprise Architecture, along with the following skills and experience: Extensive experience in developing Enterprise Architectural strategies, leading design authorities, and implementing architectural governance. Proven track record in leading enterprise architecture for large-scale cloud hosting, specifically in Azure and GCP, within high-security government Tier 2 environments. In-depth knowledge of cloud architecture, including IAM, identity federation, cryptography, network segmentation, and high-assurance gateways. Proven ability to lead enterprise design across all domains, including Data, Digital, Security, and Technical areas. Proficiency in...

Are you an experienced Architect, available for a 6 month contract and looking to contribute to major aviation infrastructure projects at some of the UK’s busiest airports? Do you have proven experience delivering aviation projects through RIBA Stage 4 with strong technical detailing and specification expertise? Are you confident using Autodesk Revit and comfortable collaborating with multidisciplinary teams on complex airport environments? The Opportunity An established engineering and design consultancy is seeking an experienced Architect with aviation project experience to support a portfolio of airport infrastructure schemes. This contract role offers the chance to work on a variety of high-profile projects while collaborating with multidisciplinary design teams and key aviation stakeholders. We would also welcome applications from these industries Rail infrastructure, major transport infrastructure, defence and security estates, complex public sector buildings, and...

Hays are now looking for a ServiceNow Solution Architect for one of our local clients: Up to £703 p/d Inside IR35 Remote Working Must currently hold SC Clearance Role Purpose The ServiceNow Solutions Architect is responsible for designing end‑to‑end ServiceNow solutions across ITSM, ITOM and wider enterprise workflows. They ensure architectural integrity, platform scalability, and alignment with best practice while guiding technical teams through solution delivery. Key Responsibilities Lead the design of ServiceNow solutions, ensuring alignment with architectural standards and business requirements. Define technical architecture, data models, integrations, and workflow designs across the platform. Provide governance and oversight across development, configuration, and implementation activities. Advise stakeholders on platform capabilities, solution options, and best‑practice approaches. Produce architectural documentation, including high‑level designs, roadmaps, and integration...

Data Integration Architect - Active SC, HL7, Healthcare Up to £700 per day - Outside IR35 South / Hybrid 6 months My client is an instantly recognisable consultancy who require a Data Integration Architect with Active SC clearance to join a business-critical programme. Key Responsibilities: Design and lead end‑to‑end data integration architectures across primary, community, and secondary care systems, using API-led, event-driven, and batch patterns. Develop sync management logic (InterSystems/EHR) including validation rules, conflict handling, object equivalence, and required data model extensions. Define non-functional integration design covering audit, logging, monitoring, rate limiting, encryption, authentication, throughput analysis, and reliable delivery. Model, map, and integrate primary care data using healthcare standards (FHIR, HL7, SNOMED CT, dm+d) across GP systems and population health or analytics platforms. Provide delivery leadership-guiding engineering teams,...

Integration Solution Architect - Digital, Transformation, Healthcare £Market Rate (Inside IR35) London / Hybrid 3-6 Months My client is an instantly recognisable firm who require an Integration Solution Architect with proven experience onboarding new clinical / digital platforms within the Healthcare domain. Key Requirements: Proven commercial experience working as a Solution Architect ideally within the Healthcare / Clinical domain. Previous experience onboarding new secondary care clinical platforms (e.g. digital consent solutions). Expertise in delivering upgrades and enhancements to existing clinical platforms such as pharmacy and cardiology systems. The ability to support the onboarding and upgrading of non‑clinical systems (e.g., catering and other operational solutions). Previous experience working with on‑premise hosted solutions, with a solid understanding of infrastructure components, including Single Sign‑On (SSO) implementation. The ability to operate within an...

Software Engineer – Back End – Java, Spring, GCP Contract: 9 Months (Renewable) Location: Essex (near Basildon and Brentwood) Office based 4 days a week Rate: £500 per day – Inside IR35 One of the world’s leading engineering companies and a household name is seeking a Software Engineer, Backend Engineer to play pivotal role in driving the technical success in our backend teams. Main Tasks & Responsibilities Software Engineer – Back End – Java, Spring, GCP > Architect scalable, resilient, and secure backend solutions and oversee the technical completion of critical development tasks, often in ambiguous situations. > Ensure backend code and architectural reviews are aligned with organisational goals, facilitating productive technical discussions, and making decisions to resolve complex backend engineering issues effectively. > Support the technical direction for backend development, offering guidance to team members and exemplifying technical excellence in...

Senior ITSM Architect Must have an Active DV Clearance 4 Day Weeks available An opportunity has arisen for a Senior ITSM Architect to support major digital transformation programmes within secure and regulated environments. This role focuses on designing robust ITSM tooling solutions that enable reliable service delivery across complex estates. You will work within an Agile team, reporting to a Solution Owner, and take ownership of architecture design across a range of ITSM platforms. About the Role - Senior ITSM Architect As a Senior ITSM Architect, you will design, configure, and customise ITSM tooling solutions across cloud, on premises, and hybrid environments. You will produce clear design documentation and ensure solutions align with service management processes and security requirements. You will collaborate with delivery teams to improve service efficiency, resilience, and automation. The role involves shaping scalable tooling architectures that support long term...

VMware Architect Must have an Active DV Clearance Join a leading Defence and National Security programme as a VMware Architect, where you'll guide the technical strategy and delivery of secure, large-scale infrastructure services. This is a high-impact role for a collaborative leader who thrives on driving innovation and delivering mission-critical solutions in complex, secure environments. About the Role - VMware Architect As a VMware Architect, you'll lead the design and technical delivery of core infrastructure components from conception through to live service. You'll collaborate across architecture, engineering, and service teams to ensure cohesive delivery aligned to strategic goals. Responsibilities include defining and governing solution architectures, maintaining design integrity, and ensuring alignment to customer and security requirements. You'll play a central role in shaping roadmaps and driving efficiency across multiple technical workstreams within an Agile...

Network Architect Must have an Active DV Clearance A new opportunity has arisen for a Network Architect to join a secure Defence and National Security programme. You will design and deliver medium to large scale network solutions while supporting multiple work streams and engaging with technical and project stakeholders across a high profile environment. About the Role - Network Architect As a Network Architect, you will work closely with Programme and Project Managers to produce high quality network designs across programme, live service, and change activities. You will contribute to HLD and LLD documentation for key technologies including Cisco FMC, SSM, FTD, Gigamon HC1 and GigaVUE FM, Juniper LAN and WAN, Endace, NTP, data centre firewalls, and LAN services. The role involves supporting engineering teams, ensuring solutions meet requirements, pass governance, and align with architectural direction. You will provide design input for customer reporting and collaborate with...

Enterprise Architecture Modelling SME Must have an Active DV Clearance Join a high-performing Defence and National Security programme as an Enterprise Architecture Modelling SME, where you will design and manage enterprise architecture models that guide strategic decision making across complex systems. This is an opportunity to work within a multi skilled agile team, shaping how technology, applications, and business processes align to deliver secure and effective outcomes. About the Role - Enterprise Architecture Modelling SME As an Enterprise Architecture Modelling SME, you will create and manage enterprise architecture models across business, application, and technology layers using the ArchiMate standard. You will develop clear viewpoints, diagrams, and capability maps to communicate architectural direction to stakeholders. The role involves conducting impact and gap analyses, scenario modelling, and supporting decision making on proposed changes. You will work closely...

Cyber Security Consultant / Security Assurance SME Summer-Browning Associates is currently supporting our central government client, who is seeking a Cyber Security Consultant for an initial 6 assignments with the option to extend. Location: London / Milton Keynes / Hybrid / Remote The ideal candidate will have an active Security clearance and a strong background in Cyber Security Assurance within a high-threat government environment. Skills and experience. Experience in producing GovAssure and Secure-By-Design assessments, including Risk Assessment Papers, Risk Treatment Plans, Risk Business Cases, and Security Management Plans. Knowledge and experience with security architecture and Security Information and Event Management (SIEM) tools, such as Splunk, Defender, Sentinel, ELK, and Tenable Threat Modelling System solutions. Extensive understanding of cybersecurity threats, attack vectors, vulnerabilities, and security controls. Demonstrable knowledge of cybersecurity...

Senior M365 Engineer (12-Month Contract) Location: London, UK (Local SME for PL Re) Duration: 12 Months Work Mode: 4 Days in Office Role Overview We are seeking a Senior M365 Engineer for a 12-month contract to serve as a Subject Matter Expert (SME) in our London office. You will lead critical migrations, manage local stakeholder governance for our PL Re division, and partner with global engineering on Copilot and new feature adoption. Key Initiatives & Responsibilities Migrations & Projects: Lead Mimecast-to-M365 and home drive-to-OneDrive migrations; manage retention/compliance policy rollouts. Network & Performance: Resolve Teams and network-related issues for London and international offices. Security & Mail Flow: Act as Line 1 security expert (EOP, mail flow rules, routing, encryption) and manage Proofpoint integrations. Architecture & Strategy: Design and implement M365 solutions in a global environment, assist with the enterprise roadmap, and...

On behalf of one of our premier clients, we are seeking a high-caliber Cybersecurity Specialist to join their expanding AI & Data Security team. This is a critical role within our client's AI Security programme, designed for a professional who thrives at the intersection of traditional infrastructure security and the emerging frontier of Generative AI. Our client is at the forefront of AI adoption; you will be the technical lead ensuring that these powerful technologies from AWS Bedrock to Azure OpenAI are implemented with world-class security standards. Key Responsibilities AI Security Architecture: Design and implement secure deployment patterns and guardrails for foundation models across AWS Bedrock, Azure OpenAI, and Microsoft 365. Security Strategy: Develop innovative strategies to enhance application security, specifically addressing risks like prompt injection, data leakage, and insecure output handling. Infrastructure Governance: Translate platform-specific risks...