JeffCalleb

Éducation

2010-2013: Telecommunications Systems Engineering Diploma
2013: Optical Fiber Installation And Maintenance
2013: Cisco Certified Network Associate (CCNA)
2011: CompTIA N+ Network Support Skills.

Langue(s)

FRANÇAIS
ANGLAIS

Compétences

- Physical Security: CCTV, Access Control, Intercom, Intrusion Detection Systems - Networking: LAN/WAN, VLANs, Fiber optics , Cisco/HP/Dell - Systems: Windows Server, Linux, Virtualization (VMware, Hyper-V), Active Directory - Databases: Microsoft SQL Server, VMS Databases, Backup & Recovery Systems - Tools: Milestone XProtect, Genetec, Avigilon, Hikvision, Bosch, Toa - Cybersecurity: OS Hardening, MAC Filtering, SSL/TLS, VPN Configurations - Server & Storage: RAID, SAN/NAS, Clustering, Failover, SNMP Monitoring

blog

Expérience professionelle

Jan 2024 – Jun 2025: Senior Systems Engineer – Integrated Fire and Safety Solutions (IFSS), Kenya
- Designed and deployed integrated security systems including CCTV, access control, alarms, and intrusion detection.
- Configured and optimized IP networks (VLANs, routing, QoS, PoE) for large multi-site security installations.
- Installed and managed servers (VMware/Hyper-V), VMS platforms (Milestone, Genetec, Avigilon), and RAID/NAS/SAN storage.
- Implemented secure remote access (VPN, firewalls) and enforced cybersecurity measures including SSL, MAC filtering, and hardening.
- Performed preventive maintenance, firmware updates, and system health monitoring to ensure high availability.

Sep 2016 – Dec 2023: Senior Systems Integrator – Glosec Group Ltd, Kenya
- Installed and configured CCTV, access control, intrusion, and security systems across multiple vendor platforms.
- Managed LAN/WAN deployments using Cisco, HP Aruba, Dell, and Checkpoint equipment.
- Supported SLA maintenance calls, troubleshooting live production systems across client sites.
- Conducted site surveys, designs, and BOQs for IT and security infrastructure projects.
- Provided OS, Active Directory, and MS Office support for 50+ users.

Aug 2015 – 2016: ITS Service Engineer / Pre-Sales – ServTel Solutions Ltd
- Responded to technical support requests and guided users on resolving system issues.
- Supported rollout and configuration of VMS and access control applications.
- Installed and maintained hardware, software, networks, and applications.
- Monitored systems and networks for performance and reliability.
- Logged issues and resolutions to support future troubleshooting.

Sep 2014 – Mar 2015: ICT Technology Officer (Internship) – Messaging Solution
- Created and configured new email users within DNS systems.
- Set up cloud data backups using Vembu StoreGrid.
- Provided remote and onsite technical support to users.
- Logged, triaged, and escalated issues to appropriate support levels.
- Assisted with downtime procedures and business continuity support.

Jun 2014 – Aug 2014: Network Support Technician (Internship) – Copy Cat Group
- Installed and configured queue management systems and printers for client sites.
- Set up computer hardware, operating systems, and user profiles.
- Supported users via phone or in person to resolve IT issues.
- Diagnosed and repaired hardware, software, and network faults.
- Built strong working relationships with customers and technical teams.