24 network security engineer jobs found in London

Job Summary We are seeking a highly skilled Senior Network Security Engineer to support a strategic Network Security Transformation Program for a leading Insurance customer. The successful candidate will be responsible for designing, implementing, and supporting enterprise network security solutions with a strong focus on Zscaler, Fortinet, and Lumio technologies. This is a hands-on engineering role requiring deep technical expertise in network security operations, security architecture, Firewall management, Zero Trust access, cloud-delivered security, and network visibility platforms. Experience with AI is essential. The ideal candidate will have experience working in large enterprise environments and be comfortable driving security improvements across both traditional and modern network infrastructures. Key Responsibilities Design, implement, and maintain enterprise network security solutions. Engineer and support Zscaler Internet Access (ZIA) and Zscaler...

Job Summary We are seeking a highly skilled Senior Network Security Engineer to support a strategic Network Security Transformation Program for a leading Insurance customer. The successful candidate will be responsible for designing, implementing, and supporting enterprise network security solutions with a strong focus on Zscaler, Fortinet, and Lumio technologies. This is a hands-on engineering role requiring deep technical expertise in network security operations, security architecture, Firewall management, Zero Trust access, cloud-delivered security, and network visibility platforms. The ideal candidate will have experience working in large enterprise environments and be comfortable driving security improvements across both traditional and modern network infrastructures. Key Responsibilities Design, implement, and maintain enterprise network security solutions. Engineer and support Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) environments....

Job Title: Senior Firewall & Network Security Engineer Location: London Position Type: Contract Overview We are seeking an experienced Senior Firewall & Network Security Engineer with deep expertise in the Fortinet ecosystem to join our infrastructure security team. In this role, you will design, manage, and continuously improve enterprise-grade firewall infrastructure, lead firmware upgrade cycles, drive automation initiatives, and serve as the subject-matter expert on FortiGate platforms — including the 1500D and 1800F series. You will work cross-functionally with network, cloud, and compliance teams, operating within ITIL-aligned change management processes. Key responsibilities: Own end-to-end management of enterprise FortiGate firewalls (1000-series and above) across production and non-production environments, including VDOM configuration, HA setup, and policy routing. Plan and execute FortiOS major-version upgrade paths (e.g., 6.x → 7.x) in production,...

Job Title: Network Security Engineer – Vulnerability Management (Tufin & RSA). Canary Wharf, UK Long Term Contract (Inside IR35) Hybrid (2 days a week)   Job Overview We are hiring a Network Security Engineer with strong expertise in Vulnerability Management, network security, and remediation practices . The ideal candidate should have hands-on experience with Tufin for firewall policy management and RSA Authentication Manager for secure access/authentication controls. The role involves identifying vulnerabilities, assessing risks, and driving effective remediation across enterprise environments. Key Responsibilities Identify, analyze, and manage network and system vulnerabilities across the environment Understand vulnerability impact and recommend appropriate fixes, remediation, and mitigation strategies Work closely with infrastructure and security teams to ensure timely closure of vulnerabilities...

Job Title: Network Security Engineer – Vulnerability Management (Tufin & RSA). Canary Wharf, UK Long Term Contract (Inside IR35) Hybrid (2 days a week)   Job Overview We are hiring a Network Security Engineer with strong expertise in Vulnerability Management, network security, and remediation practices . The ideal candidate should have hands-on experience with Tufin for firewall policy management and RSA Authentication Manager for secure access/authentication controls. The role involves identifying vulnerabilities, assessing risks, and driving effective remediation across enterprise environments. Key Responsibilities Identify, analyze, and manage network and system vulnerabilities across the environment Understand vulnerability impact and recommend appropriate fixes, remediation, and mitigation strategies Work closely with infrastructure and security teams to ensure timely closure of vulnerabilities...

Job Title: Network Security Engineer – Vulnerability Management (Tufin & RSA). Canary Wharf, UK Long Term Contract (Inside IR35) Hybrid (2 days a week)   Job Overview We are hiring a Network Security Engineer with strong expertise in Vulnerability Management, network security, and remediation practices . The ideal candidate should have hands-on experience with Tufin for firewall policy management and RSA Authentication Manager for secure access/authentication controls. The role involves identifying vulnerabilities, assessing risks, and driving effective remediation across enterprise environments. Key Responsibilities Identify, analyze, and manage network and system vulnerabilities across the environment Understand vulnerability impact and recommend appropriate fixes, remediation, and mitigation strategies Work closely with infrastructure and security teams to ensure timely closure of vulnerabilities...

Job Description Who we’re looking for We are looking for an experienced Snowflake Platform Engineer to join our Data Platform team. In this role you will be responsible for the day-to-day operation, security, and evolution of our Snowflake data platform. You will ensure the platform remains secure, performant, and available to data consumers across the business, while partnering closely with data engineering, analytics, and security teams. This is a hands-on technical role that requires deep Snowflake expertise combined with a strong appreciation for governance, access control, and cloud infrastructure. You will act as the subject-matter expert for all things Snowflake and be a key point of contact for platform-related queries, incidents, and strategic decisions. Enterprise Data Engineering sits within Global Technology. Our recent focus has been helping Schroders embed ESG data throughout our investment processes as part of the Global Sustainability initiative. While that...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

400-500 Outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting Scrumconnect Consulting is a leading UK digital and technology consultancy specialising in delivering impactful, user-centred services for the public sector. We work with central government departments, agencies, and local authorities to build digital products and services that improve outcomes for citizens. With a team of engineers, architects, delivery professionals, and designers, we bring deep expertise in digital transformation, cloud technologies, and agile delivery. We are committed to engineering excellence, innovation, and creating an inclusive environment where everyone can thrive. Role Overview We are seeking an experienced Azure Solution Architect to design, architect, and deliver scalable, secure, and high-performance cloud data solutions...

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we're building a world-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 We are seeking an experienced Kubernetes Security Engineer on a 12-month contract to strengthen the security of our Kubernetes platforms.   This is a specialist role focused on Kubernetes networking, identity and runtime security. You will design, implement and operationalise advanced...

Azure Solution Architect (SC Cleared) London, United Kingdom | Posted on 05/06/2026 About Scrumconnect Consulting Scrumconnect Consulting  is a leading UK digital and technology consultancy specialising in delivering impactful, user-centred services for the public sector. We work with central government departments, agencies, and local authorities to build digital products and services that improve outcomes for citizens. With a team of engineers, architects, delivery professionals, and designers, we bring deep expertise in digital transformation, cloud technologies, and agile delivery. We are committed to engineering excellence, innovation, and creating an inclusive environment where everyone can thrive. Role Overview We are seeking an experienced  Azure Solution Architect  to design, architect, and deliver scalable, secure, and high-performance cloud data solutions on Microsoft Azure. This role requires deep expertise in ...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we're building a world-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 We are seeking an experienced Kubernetes Security Engineer on a 12-month contract to strengthen the security of our Kubernetes platforms.   This is a specialist role focused on Kubernetes networking, identity and runtime security. You will design, implement and operationalise advanced...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Role : Knowledge Graph Architect Location: UK Type: Contract Essential Skills: Proven experience designing and implementing knowledge graphs in a production or client-facing environment Specific semantic ontology and taxonomy experience particularly using tools (Protege and Graphview) Hands-on Neo4j or equivalent graph database capability including Cypher query design and optimisation Experience building ETL/ELT pipelines that feed structured data into graph platforms Understanding of how knowledge graphs integrate with RAG and LLM architectures Ability to work from an ontologist's semantic model and implement it faithfully in graph structures Strong Python capability for data pipeline and graph integration work Experience in regulated or enterprise environments where data accuracy and platform reliability are critical Highly Desirable: Experience with GraphRAG patterns and graph-based semantic retrieval for AI agents Familiarity with...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign...

Opening: Join the Mission We deliver secure, mission‑critical platforms and services for government and regulated organisation’s operating in high‑assurance environments. Our teams work at the intersection of cloud engineering, DevSecOps, and platform enablement, helping organisation’s adopt Google Distributed Cloud (air‑gapped GCP). This role offers the opportunity to shape automation‑first testing strategies for new cloud‑native platforms, influence tooling and quality standards, and ensure solutions are secure, resilient, compliant, and testable by design. Role Purpose As an Automation Test Engineer, you will be responsible for designing, building, and operating automated testing capabilities across platform and application delivery teams. You will: Define and implement test automation strategies aligned to IaC, CI/CD, and DevSecOps practices Select, evaluate, and trade‑off test tooling suitable for air‑gapped Google Distributed Cloud...

Contract Type Day Rate Contractor Closing Date 16 July, 2026 Job Category Tech, Data and Digital Business Unit Systems and Infrastructure (UKT) Location London , United Kingdom Posted on 16 June, 2026 The opportunity Our team serves as the dedicated Delivery Strategy and Transformation hub within the Bank, focused on the successful and controlled delivery of the Modernisation and Growth roadmaps.  Sitting with the Bank’s Technology function the team works to maximise the value from build/buy solutions to deliver on Handelsbanken PLC’s strategic modernisation and transformation goals to move to modern scalable technologies and to deliver better value to our business and our customers.   The Core Banking Programme has been mobilised to deliver the phased introduction of the new Product Engine to sit at the heart of the target Architecture and is currently preparing for the RFP Phase. The...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the...

IT Operations Specialist (12 month contract) Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company co-headquartered in Toronto and San Francisco, with key offices in London, New York City, Montreal, Seoul, Germany and Paris. Join us! Note: this role is an onsite role for our London office...