Cyber Security Jobs

408 jobs for “Network Security Researcher”

Results

CrowdStrike logo

CrowdStrike · 1001–5000 people · Public

Sr. Security Researcher

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  • Germany
  • Remote
  • Senior

Security researcher role on CrowdStrike Intelligence's Advanced Research Team, developing automated solutions for large-scale data collection, operating and extending honeypots, performing vulnerability research, and reproducing emerging vulnerabilities. Involves reverse engineering, Linux/Windows internals, Python tooling, and GenAI/LLM workflows, with published research on the CrowdStrike blog or at conferences.

CrowdStrike · Python · Android +4

3 months ago
CrowdStrike logo

CrowdStrike · 1001–5000 people · Public

Sr. Security Researcher

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  • United Kingdom
  • Remote
  • Senior

Security researcher role on CrowdStrike Intelligence's Advanced Research Team, developing automated solutions for large-scale data collection, running honeypots and Internet-wide scans, and performing vulnerability research. The position also involves reverse engineering, publishing research on the blog or at conferences, and applying GenAI/LLM workflows to security research.

CrowdStrike · Android · iOS +3

3 months ago

Darktrace · 2001–5000 people · Late stage

Machine Learning Researcher

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  • Cambridge
  • Hybrid · 2 days in office

Explore and prototype machine learning solutions across domains, using language models, neural networks, statistical methods and classical ML, then implement models into the wider software stack. Work independently and with software engineers and security analysts, optimising models for latency and memory on edge devices. Hybrid role with two compulsory days a week in the Cambridge office.

PyTorch · TensorFlow · scikit-learn +2

3 months ago

Darktrace · 2001–5000 people · Late stage

Detection Engineer

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  • Cambridge

Join a global team developing and improving threat detection capabilities across key product areas. You'll respond to customer incidents, analyse cyber threat intelligence, and build detection schemes aligned to adversary techniques, collaborating with Development, Security Research and SOC teams.

Darktrace · GitLab

2 weeks ago

Hays Technology

Security Architecture & Controls Lead

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  • Birmingham
  • Hybrid · 3 days in office
  • £80,000 – £87,000 pa
  • Lead
  • Permanent

Acts as the University's authority for security architecture and protective controls, running a continuous control validation programme using breach and attack simulation, purple teaming and posture monitoring. Owns control standards and baselines, governs exceptions and drives remediation, and acts as design authority embedding secure-by-design and threat modelling into major technology change across cloud, identity and AI.

Azure · AWS · GCP +5

Last week

Claranet

CST Penetration Tester

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  • Leeds

Deliver continuous security testing across customer external attack surfaces, combining automated scanning with hands-on manual assessment. Validate scanner findings, chain vulnerabilities to demonstrate realistic attack paths, and produce proof-of-concepts and remediation advice. Work directly with customers while contributing to internal tooling and methodology.

Burp Suite Professional · SQLMap · Python +7

2 weeks ago

Claranet

CST Penetration Tester

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  • Leeds

Join a Continuous Security Testing team delivering ongoing penetration testing that blends automated scanning with hands-on manual assessment across customers' external attack surfaces. You'll validate scanner findings, chain vulnerabilities to demonstrate realistic attack paths, produce proof-of-concepts and remediation advice, and communicate risks directly to customers while improving internal tooling and methodology.

Burp Suite Professional · SQLMap · Python +7

Last week

SmartSourcing Ltd

Penetration Tester

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  • Manchester
  • Remote
  • £60,000 – £80,000 pa
  • Mid-level
  • Permanent

This role involves conducting comprehensive penetration tests across networks, web and mobile applications, APIs, and cloud environments using both manual and automated techniques. The tester will simulate real-world cyberattacks, identify vulnerabilities, and produce detailed technical and executive reports with actionable remediation advice. A key focus is translating complex security findings for non-technical stakeholders while adhering to strict ethical and compliance standards in a security-cleared context.

Clearance required Last week

Sophos

Senior Product Manager (UK)

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  • United Kingdom
  • Remote
  • Senior

Owns the strategy, roadmap and execution for the Endpoint Windows Platform, translating OS and security requirements into product priorities. Partners closely with Engineering, Microsoft and cross-portfolio teams on agent architecture, performance and platform change management, and supports go-to-market enablement.

Microsoft · Windows · Sophos Endpoint +6

Last month

Sophos

Incident Response Engineer 2

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  • United Kingdom
  • Remote
  • Mid-level

Performs advanced investigative, forensic and containment work during active cyber incidents for Managed Detection and Response customers, correlating alerts and telemetry to establish scope and root cause. Mentors junior IR and SOC analysts, maintains engagement documentation and playbooks, and supports Incident Advisors with validated technical findings. Includes weekend and holiday rotation cover.

OSQuery · SQL · KQL +2

Last month

Cloudflare

Software Engineer (Threat Intelligence), Cloudforce One

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  • London
  • Mid-level

Own the full software development lifecycle for distributed systems supporting threat disruption and legal response, building data pipelines that collect and expose threat intelligence for analysts and customers. Work primarily in Golang and TypeScript with Rust, Kafka, Redis, Kubernetes, Terraform and Postgres, collaborating with Threat Intelligence, Trust & Safety, Legal and Product teams, plus on-call rotations and mentoring.

Golang · TypeScript · Rust +7

2 weeks ago

eFinancialCareers

Associate Director, Information Governance and Records Management

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  • London
  • US$104,435 pa
  • Director

Leads and matures an enterprise-wide information governance and records management programme, owning policies, retention schedules, legal hold and defensible disposition across paper and electronic records. Also supports data classification, data governance, privacy by design and AI governance, advising Legal, Compliance, Technology and business stakeholders through cross-functional forums.

4 days ago

Amazon · Public

Content Security Engineer, GME Security

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  • London
  • Permanent

Hands-on security advisory role protecting pre-release film and series content across the production lifecycle, from editorial setup and Aspera transfers to cloud storage and on-set networking. Combines vendor security assessments, research into forensic watermarking and anti-generative-AI controls, and building AWS-based tooling and Python automation.

AWS · Aspera · Python

3 months ago

Amazon · Public

Senior Content Security Engineer, GME Security

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  • London
  • Senior
  • Permanent

Hands-on security advisory role protecting pre-release film and series content across the production lifecycle, from editorial setup and Aspera transfers to cloud storage and on-set networking. Also maintains AWS infrastructure, builds Python automation for access governance and audit reporting, and researches emerging threats such as forensic watermarking and generative AI misuse.

AWS · Aspera · Python

3 months ago

Sheffield Hallam University

Lecturer in Cyber Security and Computer Networks

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  • Sheffield
  • £40,704 – £45,641 pa
  • Mid-level
  • Contract

Deliver and develop undergraduate and postgraduate Cyber Security and Computer Networks teaching, with a focus on technical areas, within an applied, project-based learning environment. Engage in industry consultancy and knowledge exchange, helping regional businesses achieve certifications such as Cyber Essentials. The role sits in an NCSC-certified department where staff and students collaborate closely.

NCSC

3 weeks ago

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