Hire the Best Kali Linux Freelancers
in Kenya

I am a Linux system administrator with 5+ years of experience specializing in captive portal systems (Coovachilli) on WiFi Guest Networks , particularly using FreeRADIUS for managing user access on wireless and wired networks for major Vendors such as TPLink, Unifi Ubiquity, and OpenWRT. I build robust, scalable solutions for bandwidth management, data caps, and session control. Am a certified FullStack Developer with Backend Specialization. My technical stack includes: 🔧 FreeRADIUS, CoovaChilli,OpenWisp, DD-WRT/OpenWRT/Omada Controller/ Unifi Cloud Controller Captive Portal Setup Specialist 📡 TPLink Omada Controller - Advanced Data Backup and Restoration 🐘 PHP — Backend APIs, portals, and admin dashboards 🐍 Python — Enterprise applications and automation scripts 💾 MySQL/MariaDB, PostgreSQL 🔐 Security hardening and performance optimization on Ubuntu/Debian servers I hold a Software Development Certification in Backend Full-Stack Development, and I deliver projects that are clean, documented, and production-ready. Why choose me? ✅ Top Rated – Top 10% on Upwork 📈 Proven results and client satisfaction 🤝 Professional, transparent communication 🔍 Deep understanding of backend systems and network access control Let’s collaborate and build something that works — securely and at scale.

I'm a certified cybersecurity professional specializing in blue team operations including threat detection, incident response, log analysis, and security monitoring. With hands-on experience in SOC workflows and a strong foundation in defensive security, I help organizations detect threats early, respond effectively, and strengthen their security posture. What I can do for you: - Security event monitoring and alert triage using SIEM platforms - Log analysis and correlation to identify indicators of compromise (IOCs) - Incident response support — containment, eradication, and recovery - Threat intelligence integration and IOC enrichment - Phishing email analysis and malware triage - Vulnerability assessment and security gap reporting - Security documentation — SOPs, incident reports, playbooks Certifications & Training: - CompTIA Security+ (SY0-701) - Microsoft SC-900 (Security, Compliance & Identity Fundamentals) - LetsDefend SOC Analyst Learning Path - Cyber Shujaa Security Analyst Mentorship Program I'm methodical, detail-oriented, and communication-focused. I don't just find threats, I document findings clearly, so your team understands the risk and the fix. Whether you need ongoing SOC support, a one-time security review, or help building detection playbooks, I'm ready to deliver. Let's secure your environment. Message me to get started.

I will install, configure, tune and maintain your Linux servers. - CentOS, Debian, Ubuntu, CloudLinux, RHEL - Available to start IMMEDIATELY - Remotely - 17 years IT generalist (support, training, development, design) - 15 years Linux, UNIX, Systems Administration - 11 years Database administration: PostgreSQL, MySQL, MS-SQL - 11 years Network administration: TCP/IP, DNS, DHCP, SSH, VPN, VLAN, Routing, Firewalls - 6 years experience working with cloud providers: VPS/Dedicated servers, hosted/managed services - L1/L2/L3 tech support - Virtualization: Xen, OpenVZ, VMWare ESXI, KVM - Experience with AWS - EC2, RDS, S3, Cloudfront, ELB, ACM - Server provisioning, monitoring, performance testing and tuning - Datacenter and server installation, operations/administration - Linux: Debian, Ubuntu, CentOS, RHEL, Oracle Linux - DevOps: Ansible, Gitlab - High-availability systems (database replication, load-balancing) - Web-hosting management: WHMCS, cPanel, Plesk - Experience with networking - TCP/IP, DNS, SSH, Routing, VPN, routers, firewalls - Systems monitoring - Nagios, Zabbix, Monit - Apache, Nginx, Varnish, Squid, LetsEncrypt, SSL/TLS - HA, fail-over, backups and disaster-recovery - Understanding of GDPR, HIPAA - Experience deploying the following software on Linux: Nagios, Zabbix, Moodle, Apache, nGinx, MySQL, PHP, Python, PostgreSQL, ownCloud, Nextcloud, WordPress, Drupal, Mediawiki, WordPress

Founder of LEVILYN, a cybersecurity and digital forensics company with over 12 years of practical and field experience. My areas of specialization are: [cybersecurity and compliance services]  Penetration Testing and Vulnerability Assessments [VAPT]: web application and mobile applications  Cloud computing  Network security: Firewalls, IDS/IPS, OpenVPN  Research work on cybersecurity, Articles, Blogs, ebooks.  Compliance policies [ PCC DSS, HIPAA, COBIT, NIST, ISO 27001,GDPR]  Risk assessment  Business Continuity and Disaster Recovery Plan [BCDR]  Controls (NIST, ISO/IEC 27000, ISO27701 series)  Document the best IT audit standards and policies [Digital Forensic Services]  Mobile Forensics  Computer Forensic  Network Forensics  Cloud Forensics  Cyber Security Compliances Policies and Risk Assessment,  Cybercrime Investigations  Research Work  Digital Forensic Report Writing [Forensics Tools competency] ▪ Autopsy ▪ Belkasoft ▪ Cellebrite UFED ▪ FTK Imager ▪ Magnet Axiom ▪ OS Forensic ▪ OSINT ▪ Wireshark ▪ Nmap ▪ Netcat ▪ Network Minor ▪ Volatility ▪ Splank

Cloud Computing and Linux Systems Engineer I have 5+ years experience deploying and managing mission-critical and complex Linux/Unix Infrastructures. This revolves around Cloud, Virtualization and Physical server Environments. I have done a good number of Projects on Linux, Cloud, Windows and Unix Systems Integration, Automation, Security, and Performance Tuning on Different platforms - Cloud, Containers and Bare Metal. My areas of expertise are: Web and Application Servers - Apache, Nginx, Plesk, LVS, HAProxy, Cpanel, WHM, Wordpress multi-site, ISPconfig Database systems - MariaDB, MySQL, PostgreSQL Cloud - OpenStack, Cloudstack, AWS, Google Cloud, Hetzner, Digitalocean, OVH Virtualization - KVM. oVirt. RHEV, VMWare, Proxmox, XEN OS - RHEL, SLES. Ubuntu, CentOS, Fedora, Debian, Microsoft Email - Postfix, Zimbra, Office 365 Storage - NAS, SAN, iSCSI, Samba, NFS, Ceph, GlusterFS, RAID, LVM, BtrFS Programming - Python, Perl, Bash VoIP - Asterisk, FreePBX, Kamailio, Elastix, 3CX, VoipSwitch Monitoring Tools - Cacti, Prometheus, Nagios, Zabbix, Grafana Server Hardening and Security - Firewalld, Iptables, SELinux, AppArmor, IDS, IPS, Ossec, Wazuh, Alienvault, Pfsense, Mikrotiks. Logs Management - Graylog, Elasticsearch, Kibana, Logstash User Management - LDAP, FreeIPA I like hacking Tech stuff and troubleshooting any kind of server problem with 100% efficiency and within the shortest time possible. I'm looking forward to working with you. Then let's read what my previous Upwork clients had said about me: "Kelvin was awesome. Extremely patient, great communication and really knows his stuff. Will be working together again for sure :)" "With Kelvin all work is done with no supervision !! Great professional !" "Best freelancer on Upwork, hands down. Very very skilled, always available, great at communicating and very friendly.

As an experienced cybersecurity analyst with a proven track record of six years, I am dedicated to safeguarding your organization's sensitive data and infrastructure. With a deep understanding of modern cyber threats and expertise in implementing robust security measures, I provide comprehensive protection against potential risks and vulnerabilities. My goal is to ensure the confidentiality, integrity, and availability of your digital assets while minimizing the impact of potential security incidents. Skills and Expertise: Threat Detection and Prevention: • Advanced knowledge of intrusion detection systems (IDS) and intrusion prevention systems (IPS) to identify and neutralize potential threats. • Proven experience in analyzing security logs, network traffic, and system events to identify suspicious activities and respond effectively. Vulnerability Management: • Conducting regular vulnerability assessments and penetration testing to identify weaknesses and recommend mitigation strategies. • Proficient in using industry-standard tools such as Nessus, OpenVAS, and Burp Suite for comprehensive vulnerability scanning and analysis. Incident Response and Forensics: • Quick and decisive action in responding to security incidents, minimizing impact, and restoring systems to normal operations. • Strong knowledge of digital forensics tools and techniques to investigate and analyze security breaches, collecting evidence for legal proceedings if necessary. Security Architecture and Design: • Designing and implementing secure network architectures, including firewalls, VPNs, and access controls. • Deep understanding of security frameworks such as ISO 27001, NIST, and CIS benchmarks to ensure compliance and best practices. Security Awareness and Training: • Developing and delivering engaging cybersecurity training programs to educate employees about potential risks and best security practices. • Promoting a culture of security awareness to empower individuals at all levels of the organization to become proactive defenders against cyber threats. Certifications: Cybersecurity Analyst Professional – IBM Secure Access with Azure Active Directory - Microsoft Certified Information Systems Security Professional (CISSP) Certified Ethical Hacker – Cisco Cybersecurity Attack and Defence - EC- Council Cyber Threat Management – Cisco Penetration Testing, Incident Response and Forensics - IBM Security, Compliance, and Identity Fundamentals - IBM Information Systems Auditing, Controls and Assurance - IBM Penetration Testing with Kali Linux (PEN-200) – OSCP+ (Ongoing) Cyber Threat Intelligence – IBM. Azure Security Engineer Associate - Microsoft Bachelor's Degree in Computer Information Systems. I look forward to working with you