Hire the Best Cybersecurity Engineers

Clients rate our Cybersecurity Engineers
Rating is 4.8 out of 5.
4.8/5
Based on 1,046 client reviews
Muhammad Ahmad B.

Islamabad, Pakistan

$10/hr
5.0
4 jobs

I’m Muhammad Ahmad Bilal, a CISSP-certified Security Architect and Information Security Manager who works at the intersection of security engineering, threat detection, and AI. For the past 9+ years I’ve been designing and running security programs at government scale, protecting critical national applications, large user bases, and high-value data across the public sector. I specialise in turning noisy, complex environments into predictable, defensible systems. That’s included building ML-driven APT detection using TensorFlow and PyTorch, modernising SIEM/SOAR stacks to cut detection and response times by around 40%, and embedding security into the SDLC so vulnerabilities are caught before they ever reach production. I’ve led Zero Trust initiatives, redesigned IAM around least privilege, and driven end-to-end implementations of governance, risk, and compliance programmes aligned with standards like ISO 27001, NIST, PCI, GDPR, and HIPAA. I’m also an educator by choice. As a Lecturer at NUST, I’ve taught Computer and Network Security, Cryptography, Operating Systems, and Data Structures, and supervised 20+ research projects in cybersecurity and machine learning. My academic work includes publications on: - Deep learning–based intrusion detection for IoT - Protocol-aware IDS using datasets such as UNSW-NB15 and Bot-IoT - Federated learning with explainable AI for malicious traffic detection and cellular traffic prediction What I do best: - Design security architectures for large, heterogeneous environments that can actually be operated and maintained by real teams. - Build and tune detection & response: SIEM, EDR, and SOAR use cases, threat hunting workflows, and playbooks that reduce noise while catching what matters. - Integrate security into delivery through secure SDLC practices, code review guidelines, and automation that supports developers instead of blocking them. - Make compliance meaningful, mapping real technical and process controls to standards and regulations so they translate into measurable risk reduction. - Develop people and teams, mentoring analysts and engineers so security becomes an organisational capability, not a one-team bottleneck. In simple terms, my work is about building security systems—technical, procedural, and human—that don’t fall apart the moment something real happens.

  • Cybersecurity Management
  • Compliance
  • Information Security
  • Cyber Threat Intelligence
  • Cybersecurity Monitoring
  • NIST Cybersecurity Framework
  • Cryptography
  • SOC 1
  • SOC 2
  • SOC 3
  • ISO 27001
  • Information Security Audit
  • Information Security Consultation
  • Certified Information Systems Security Professional
  • Information Security Governance
Collins M.

Nairobi, Kenya

$50/hr
5.0
82 jobs

I help security vendors, MSSPs, SaaS teams, NGOs, and enterprise security teams strengthen their cybersecurity operations through practical security engineering, SIEM/logging expertise, incident response support, and clear technical documentation. I am a Cybersecurity Engineer and Technical Writer with 9+ years of hands-on experience across security operations, threat detection, incident response, vulnerability assessment, system hardening, compliance documentation, and cybersecurity product documentation. My background is not generic content writing. I have worked directly with SIEM, XDR, DLP, WAF, endpoint security, Linux systems, cloud platforms, vulnerability scanners, and security monitoring tools. I also have professional experience writing technical cybersecurity documentation for enterprise users, product teams, and security operations teams. I can help you with: * SIEM, logging, and security operations documentation * Incident response plans, SOC playbooks, and security runbooks * Vulnerability assessment reports and remediation guidance * Cybersecurity policies, procedures, compliance reports, and audit documentation * Security product documentation, integration guides, and troubleshooting guides * Cybersecurity blog articles, white papers, and technical explainers * Security awareness content and training materials * Device security, endpoint hardening, and operational security guidance * Risk assessments, security audits, and control gap analysis Tools and technologies I have worked with include Splunk, IBM QRadar, ELK Stack, Wazuh, Microsoft Sentinel, Chronicle, NXLog, Datadog, Prometheus, Zeek, Snort, Suricata, OSSEC, OpenVAS, Tenable Security Center, ModSecurity, WPScan, GitLab, MkDocs, Linux, Windows Server, AWS, Azure, and GCP. Security frameworks and standards I work with include ISO 27001, PCI-DSS, GDPR, NIST, SOC 2, CIS Controls, OWASP Top 10, and MITRE ATT&CK. Selected experience: * Conducted 50+ cybersecurity assessments on devices used by at-risk civil society groups. * Developed and delivered device security training to 100+ staff. * Authored 60+ cybersecurity product and integration documents for enterprise users. * Configured log collection and SIEM integrations with Splunk, ELK Stack, and IBM QRadar. * Deployed and configured SIEM, XDR, DLP, and WAF tools for telecom, finance, and public sector clients. * Led incident response for 30+ critical cyber threats. * Optimized 100+ SIEM detection rules to improve alert quality and reduce false positives. * Conducted 35+ vulnerability assessments and penetration tests. * Produced ISO 27001 and PCI-DSS compliance reports. * Led a managed security services project for a major telecom environment. Why clients work with me: * I understand cybersecurity from the engineering side, not just the writing side. * I can communicate clearly with executives, engineers, compliance teams, and end users. * I can turn messy technical information into structured, useful documentation. * I can help security teams reduce confusion, improve response workflows, and document security operations properly. * I am comfortable working remotely with international teams and long-term clients. If you need someone who can understand the technical details, ask the right security questions, and produce clear, practical deliverables, I can help.

  • Cybersecurity Management
  • Technical Writing
  • Information Security
  • Incident Response Plan
  • Vulnerability Assessment
  • Security Operation Center
  • ELK Stack
  • Cloud Security
  • Application Security
  • Information Security Governance
  • Cybersecurity Tool
  • Information Security Consultation
  • Penetration Testing
  • Security Assessment & Testing
  • Network Security
Chirag G.

Adelaide, Australia

$15/hr
5.0
19 jobs

Chirag has spent almost 15 years in cybersecurity and worked in 10 different countries with talented cyber engineers. So, he knows the difference between a virus and a worm. Early in his career, he provided network security for Fortune 500 clients before advancing to cybersecurity, where he then spent his time learning and securing multiple clouds. His journey led him to Australia, where he worked with the government before starting his company and consulting for South Australia Health Department and a major bank. He won several prestigious awards and earned around 26 technical certifications. Currently, he is working with a team of people much smarter than him at Cybernara. You can find him geeking out on LinkedIn at Chirag’s LinkedIn. Also, don’t forget to say hi.

  • Cybersecurity Management
  • Vulnerability Assessment
  • Risk Assessment
  • Network Security
  • Cloud Security
  • Security Analysis
  • Security Patch Installation
  • NIST Cybersecurity Framework
  • Cyber Threat Intelligence
  • Cybersecurity Tool
  • Cybersecurity Monitoring
  • Security Operation Center
  • Splunk
  • Information Security
  • Penetration Testing
Hassan S.

Karachi, Pakistan

$15/hr
5.0
4 jobs

Your applications and infrastructure are only as secure as the last person who tried to break in. I make sure that person is me — before a real attacker gets there. I'm an offensive security specialist with 7+ years in ethical hacking, and I've led hundreds of penetration tests, security audits, and red team engagements — for multinational enterprises with thousands of assets and for startups that need to prove security to win their first big customer. My focus is hands-on, manual exploitation: finding the flaws automated scanners miss, then showing you exactly how an attacker would chain them into real damage. Every engagement ends with a report your developers can actually act on — not a 200-page scanner dump. Here's how I help: 🔍 Penetration Testing Comprehensive manual + automated testing of web apps, APIs, mobile apps, servers, and networks (internal and external). I work with industry-standard tooling — Burp Suite Professional, Nessus — alongside custom scripts refined across past engagements to dig deeper than off-the-shelf tools allow. 📑 Professional Reporting & Risk Analysis A clear, professionally written report for every finding, including step-by-step exploitation methodology, full HTTP requests/responses, annotated proof-of-concept screenshots, standardized CVSS v4.0 ratings, and the real business impact tied to each affected asset. 🛠️ Remediation Guidance Tailored, best-practice fixes for every issue — explained so both your engineers and your decision-makers understand the risk and the path to closing it. 🌐 Asset Discovery & Mapping Active and passive reconnaissance to reveal your true attack surface: subdomain enumeration, port and service discovery, and identification of exposed public-facing assets. 🔁 Free Retest & Validation A complimentary re-test after you've remediated — verifying fixes hold and confirming no alternate exploitation paths remain. 🕵️ OSINT Reconnaissance Open-source intelligence to surface what attackers already know about you: breached credentials, leaked documents, exposed metadata, and chatter on forums and the dark web — backed by access to a curated repository of 4+ billion records. 🤝 Pre-Engagement Consulting Scoping sessions to define your Scope of Work, choose the right engagement type (black-box, grey-box, or white-box), set access requirements, and guide first-time clients through the process end to end. 🎯 Post-Engagement Debrief A walkthrough of every finding — clarifying technical impact in plain language, prioritizing by real-world risk, and mapping out how to strengthen your security posture going forward. If you're protecting customer data, preparing for a compliance or vendor security review, or simply want to know where you stand before someone else finds out — let's talk. Send me a message with a bit about your project and I'll tell you honestly how I can help.

  • Cybersecurity Management
  • Information Security
  • Penetration Testing
  • Security Assessment & Testing
  • Vulnerability Assessment
  • Security Testing
  • Web App Penetration Testing
  • Kali Linux
  • Web Application Security
  • Cloud Security
  • Black Box Testing
  • Information Security Awareness
  • Network Penetration Testing
  • OWASP
  • Risk Assessment
  • WordPress Security
  • Bug Bounty
Nadheera S.

Ganemulla, Sri Lanka

$25/hr
5.0
23 jobs

Hello! I’m Nadheera Senasinghe, a cybersecurity professional and AI security specialist with a proven record of protecting enterprise infrastructures, securing AI-powered applications, and leading digital transformation initiatives globally. As the Chief Project Manager and Co-founder of Red Threat Cyber Security (RTCS), I lead a team of expert ethical hackers, AI engineers, and compliance auditors delivering tailored cybersecurity and AI solutions for startups, healthcare providers, fintech platforms, SaaS companies, and regulated enterprises. 🔐 Cybersecurity Services Offered: • Penetration Testing & Ethical Hacking – Web, Mobile, API, IoT, and Network Pentesting – OWASP Top 10, SQLi, XSS, CSRF, RCE, RFI, and Serialization Attacks – Red Teaming, Adversary Emulation, and Purple Teaming – Pentesting for LLM/GPT apps (prompt injection, model exploitation) • Managed Security Services (MSSP) – SIEM (Splunk, Azure Sentinel, QRadar) & SOAR – 24/7 Threat Monitoring, EDR/XDR Deployment – SOC/NOC Architecture & Incident Response Playbooks • Cloud Security & DevSecOps – Cloud Audits (AWS, Azure, GCP), Zero Trust Design – Kubernetes & Docker Security, CI/CD Hardening – Infrastructure as Code (IaC) Reviews • Governance, Risk & Compliance – HIPAA, GDPR, ISO 27001, NIST CSF, SOC 2, PCI-DSS – Risk Assessments, DPIAs, Gap Analysis & Internal Audits • Threat Intelligence & OSINT – Corporate Recon, Espionage Risk Identification – Executive Profiling, Dark Web Monitoring • CISO-as-a-Service & Awareness Training – Virtual CISO Engagements – Custom Security Awareness Workshops 🤖 AI & GPT Integration Services: • LLM & GPT Security – Prompt Injection Prevention – Jailbreak Testing, Output Control – Secure API Wrapping & Audit Logging • Custom GPT Application Development – SEO GPT (w/ Moz API), Compliance GPT, Pentest GPT – Retrieval-Augmented Generation (RAG) Systems – Red Mallory: A proof-of-concept GPT demonstrating AI vulnerabilities (for research/awareness) • Secure AI Deployments – LLM System Design with Role-Based Access & Token Control – Data Leakage Protection for AI Systems – AI-driven Compliance Automation Tools 🎓 Certifications & Tools: • ISC² Systems Security Certified Practitioner (SSCP) • NIST CSF Practitioner | Google Project Management Certified • Tools: Burp Suite, Metasploit, Nessus, Nmap, Splunk, Nikto, IriusRisk, Wireshark, Threat Modeler, Microsoft TMT, DirBuster, OpenVAS 🌍 Client Locations & Industries Served: We’ve delivered successful projects in the USA, UK, UAE, Canada, Mexico, Belgium, Ghana, Hungary, and Latvia, serving sectors like: • Healthcare & HIPAA Platforms • Fintech & Payment Systems • SaaS & LLM-Based Startups • E-Commerce, Oil & Gas, Real Estate, and Public Sector Projects include HIPAA audits, fintech pentesting, red teaming for remote-first organizations, cloud security assessments, GPT app development, and cyber defense automation. 🚫 Please Note: I do NOT offer personal hacking, scam recovery, crypto wallet recovery, or any illegal services. 📩 Let’s Work Together! Whether you're building secure AI applications, improving your cyber defense posture, or seeking compliance-ready solutions—I bring hands-on leadership, global delivery experience, and technical excellence to every engagement. Let’s secure your digital future together.

  • Cybersecurity Management
  • Python
  • Project Management
  • Cybersecurity Tool
  • Ethical Hacking
  • Agent GPT
  • Prompt Engineering
  • Generative AI Software
  • Retrieval Augmented Generation
  • NIST Cybersecurity Framework
  • Certified Information Systems Security Professional
  • Penetration Testing
  • Managed Services
  • AI Security
  • Cloud Security
Charles M.

Richmond, Virginia

$60/hr
5.0
165 jobs

I help cybersecurity and AI teams turn complex concepts into crystal‑clear documentation, training, and policies that people actually follow. I've combined seventeen years of editing experience with six years of cybersecurity experience to offer a unique skillset to my clients. If you need security awareness content, AI product docs, or responsible‑AI guidance that’s accurate and readable, I would love to chat. With hundreds of clients and 5-star reviews, you can be certain I will give your work the utmost attention. Typical projects I handle: 1) Turning your security policies into employee‑friendly handbooks, onboarding content, and e‑learning scripts. 2) Writing or overhauling product documentation for AI or security tools (setup guides, API references, FAQs). 3) Designing security awareness campaigns (topic roadmap, copy, and assets outline). 4) Drafting responsible‑AI or data‑usage guidelines in language non‑technical staff can understand. 5) Editing and polishing technical blog posts, white papers, and reports so they’re publication‑ready. I don’t just write—I improve structure, clarity, and consistency so your content reflects well on your team. I can follow code examples, understand high‑level architectures, and speak with your engineers without losing the plot. And because I am a certified AI Generalist who is always actively learning cybersecurity and AI, I understand common threats, risk tradeoffs, AI limitations, and several AI tools.

  • Cybersecurity Management
  • Java
  • Python
  • Computer Science
  • Technical Editing
  • Network Penetration Testing
  • Writing
  • Music Arrangement
  • Bash Programming
  • White Paper
  • Editing & Proofreading
  • Academic Editing

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