Cyber Security Jobs

253 jobs for “System And Network Administrator”

Results

CrowdStrike logo

CrowdStrike · 1001–5000 people · Public

Intelligence Intern - Summer 2027

  • Reading
  • Hybrid
  • Entry level
  • Internship

Internship on CrowdStrike's Technical Analysis Cell, researching nation-state and criminal intrusions through reverse engineering of malware and tooling. The role involves building automation for malware analysis, creating host- and network-based detection signatures, and producing threat intelligence reporting for varied audiences.

Disassemblers · Decompilers · Debuggers

Yesterday
CrowdStrike logo

CrowdStrike · 1001–5000 people · Public

Intelligence Intern - Summer 2027

  • London
  • Hybrid
  • Entry level
  • Internship

Internship on CrowdStrike's Technical Analysis Cell, researching nation-state and targeted intrusions through reverse engineering of malware and tooling. You'll build automation for malware analysis, create host- and network-based detection signatures, and produce threat intelligence reporting for varied audiences.

CrowdStrike · Disassemblers · Decompilers +1

Yesterday

VIQU IT

Cyber Security Analyst

  • London
  • Hybrid · 3 days in office
  • £45,000 – £50,000 pa
  • Mid-level

Supports continuous improvement of cyber security processes, tools and operational practices, including vulnerability management, threat detection and security monitoring. Works with technical teams to optimise and integrate SIEM, EDR and identity security platforms, and develops reporting to track security performance. Exposure to Microsoft Logic Apps or Power BI is advantageous.

SIEM · EDR · Microsoft Logic Apps +1

Yesterday

Pearson Whiffin Recruitment Group

Senior Infrastructure Engineer

  • Manchester
  • Hybrid
  • £50,000 – £55,000 pa
  • Senior

Hands-on infrastructure engineering role maintaining, securing and improving a UK and international company's IT estate, reporting to the Head of IT. Covers Windows Server, Active Directory, Hyper-V, Microsoft 365/Azure hybrid environments, networking, Sophos firewalls, cybersecurity and PowerShell automation, plus delivering server migrations and upgrades rather than service desk work.

Windows Server · Active Directory · Group Policy +11

3 days ago

eFinancialCareers

Cyber Security Architect

  • London
  • Hybrid
  • £80,000 – £100,000 pa
  • Senior
  • Permanent

Defines and delivers secure architectures across enterprise IT and operational technology environments, working with technical and solution architects to embed security through the design lifecycle. Applies threat modelling, NIST/ISO/CIS frameworks and advises on protective monitoring, IAM and risk mitigation. Client-facing, requiring active SC clearance and strong stakeholder communication.

NIST · ISO · CIS +1

SC clearance Last month

Hays Technology

Cyber Security Lead

  • Leeds
  • Hybrid · 3 days in office
  • £65,000 – £70,000 pa
  • Lead · manages people
  • Permanent

Lead a cyber security team day to day, covering resource planning, rotas and performance management, while overseeing incident response, vulnerability management and cloud security migration. Act as escalation point for security incidents and lead war-gaming exercises within an ITIL and ISO 27001 framework, requiring hands-on Azure security expertise.

Azure · Windows Server · VMware +7

3 weeks ago

Amazon · Public

Software Development Engineer, IAM Stores Security

  • London
  • Permanent

Builds and operates large-scale distributed systems that process security-relevant data with high availability and low latency, owning services end to end including architecture, deployment, monitoring and on-call. Works with very large datasets and cross-functional security, compliance and service teams, contributing to technical direction and mentoring engineers.

2 weeks ago

QinetiQ

Cyber Security - eDV Required

  • Malvern, England, United Kingdom
  • On-site

Join a team delivering offensive security solutions in real-time operational mission environments, planning and executing advanced red team engagements that simulate real-world attacks. The role involves exploiting vulnerabilities across infrastructure, applications and cloud platforms, bypassing defences such as firewalls, EDRs and IDS/IPS, and developing realistic adversary TTPs. Work is fully on-site at the Malvern facility, focused on defence and national security.

AWS · Azure · GCP +7

eDV clearance 3 weeks ago

Morgan Law

Head of Information Security and Privacy

  • London
  • Hybrid · 2–3 days in office
  • £100,000 – £110,000 pa
  • Director · manages people

Leads a five-person information security and governance function within a government body's compliance team, owning the information management system and its audit cycle. Ensures compliance with ISO 27001, Cyber Essentials (Plus), NIST and GovAssure, covering control documentation, third-party risk and security awareness. Hybrid role with two to three days a week in the South London office.

ISO 27001 · Cyber Essentials · Cyber Essentials Plus +2

3 months ago

Barclays

Cryptography Operations Engineer

  • Knutsford
  • Mid-level · manages people

Hands-on engineering role safeguarding encryption keys and cryptographic services across enterprise applications, working with Hardware Security Modules and Thales/Entrust tooling. Involves BAU and 24/7 on-call support, security assessments, penetration testing, and key management across Windows and Linux environments, with occasional off-site data centre work.

Thales · Entrust · SharePoint +5

4 months ago
Appvia logo

Appvia · 11–50 people · Series A

AWS Senior Platform Engineer (SC Eligible) – 1–2 Days a Month in Office

  • London
  • Hybrid · 1–2 days in office
  • £75,000 – £90,000 pa
  • Senior
  • Permanent

Design, build and operate secure AWS platforms using Terraform, Kubernetes/EKS and CI/CD for public and private sector clients. You will own technical delivery in your area, create reusable modules and deployment patterns, and mentor less experienced engineers within multi-disciplinary consulting teams.

AWS · Terraform · Kubernetes +7

3 weeks ago

Immersive

Senior Analytics Engineer

  • United Kingdom
  • Remote
  • Senior
  • Permanent

Builds and maintains analytical data models in a cloud data warehouse, designing high-quality datasets for customer-facing reporting and developing semantic layers for BI. Works in a multi-disciplinary agile product team with data and software engineers, leading on data quality, observability and model optimisation while mentoring junior engineers.

Snowflake · dbt · Power BI +4

3 weeks ago

Amazon · Public

Security Engineer, Forward Deployed Engineering, AWS Forward Deployed Engineering

  • London
  • Mid-level
  • Permanent

Hands-on security engineering role securing production AI systems deployed inside enterprise customer environments. You conduct design and code reviews, threat modeling and penetration testing for agentic workflows and RAG pipelines, and build security automation such as scanning tools, CI/CD gates and guardrail testing scripts. Work alongside FDE delivery pods, with up to 25% travel.

AWS · Amazon Bedrock · RAG +1

Last month

VBeyond Corporation

ServiceNow Security Consultant

  • London
  • Senior

Customer-facing consulting role advising on ServiceNow security, risk and compliance, including data encryption, key management, GRC, Security Vault and SecOps. Involves workshops, security and maturity assessments, architecture reviews, gap analysis and remediation roadmaps, working with customer security leaders, risk teams and platform owners.

ServiceNow · ServiceNow Data Encryption · ServiceNow GRC +2

Today
Humanoid logo

Humanoid · 11–50 people · Series A

Principal Product Cybersecurity Assurance Engineer

  • London
  • On-site
  • Lead · manages people
  • Permanent

Lead product cybersecurity assurance across the HMND 01 humanoid robot platforms, defining security requirements, threat modelling and risk artefacts for safety-critical electromechanical systems. Own TARA, security management plans and remediation actions, drive compliance with IEC 62443, the EU Machinery Regulation and the Cyber Resilience Act, and build a PSIRT process while guiding a cross-functional security team.

CAN bus · Ethernet · KinetIQ +4

4 months ago

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