JULIO CESAR LIMA SOUZA
Adelaide,SA
Summary
Experienced Network and Firewall Engineer / Consultant specializing in secure infrastructure design with Fortinet and Cisco. Led project lifecycle management initiatives, enhancing team performance and maintaining high uptime. Delivered cybersecurity solutions aligned with industry standards through strong problem-solving and communication skills.
Overview
15
15
years of professional experience
1
1
Certification
Work History
Network and Firewall Consultant
PNSG PARLIAMENT OF SOUTH AUSTRALIA
04.2025 - Current
- Hardened and maintained network and security infrastructures with Fortinet (cloud and on-prem), Palo Alto, and Cisco (Switching, ISE, WLC) to safeguard sensitive data.
- Designed, reviewed, and enhanced network and security architectures for critical government environments, ensuring robust protection and compliance.
- Troubleshot and optimised VPN solutions (Cisco, Fortinet, Palo Alto) across production, test, and disaster recovery environments, ensuring seamless connectivity.
- Implementing and managing monitoring, visibility, and IPAM solutions to improve operational reliability and network governance.
Senior Systems/Network Engineer
HASTWELL
08.2024 - 04.2025
- Delivered network and cyber security solutions for government and enterprise clients in campus and data centre environments, ensuring compliance with security standards.
- Designed, deployed, and managed enterprise networking with Cisco Nexus/Catalyst, Aruba, Ubiquiti, Fortinet, Meraki, F5 and Extreme Networks.
- Configured and maintained firewalls and security platforms: FortiGate, Palo Alto, Firepower, Check Point, WatchGuard, Clearpass.
- Implemented VPN solutions with Cisco, Fortinet, and Palo Alto technologies, enabling secure remote access for users across various locations.
- Monitoring network performance with LogicMonitor and PRTG.
- Provided technical training and mentoring, resolving critical network issues to enhance team knowledge and support capabilities.
Senior Network Engineer
COMUNET IT
02.2023 - 07.2024
- Led end-to-end network and security project lifecycle, focusing on requirement gathering, architectural design, deployment, and post-implementation support to ensure robust infrastructure.
- Delivered tailored network and cyber security solutions for government, enterprise, education, and age care clients, enhancing their operational security.
- Expertise in SD-WAN, IPsec, BGP, OSPF, and MPLS protocols.
- Implemented network solutions using Fortinet, Cisco, Aruba, and Sophos equipment, optimizing performance and reliability.
- Hands-on experience with cloud infrastructure, primarily AWS and Azure.
Network Engineer
BLACKBIRD IT
06.2022 - 02.2023
- Designed and deployed wired and wireless networks using Cisco, Meraki, Aruba, Ruckus, and Unifi.
- Implemented robust cybersecurity solutions using Cisco Firepower, Meraki MX, Fortinet, Sophos, and WatchGuard to enhance network security.
- Collaborated with pre-sales team to design customized networking solutions that met client requirements.
- Network Engineering and Systems Administration, with a primary focus on networking solutions.
- Managed Microsoft-based systems (on-premises and cloud) alongside VMware deployments, VEEAM backup solutions, and 3CX VoIP systems to ensure operational continuity.
- Utilized ConnectWise for management and ITGlue for documentation.
Consultant / Technical Lead
ACCENTURE
03.2021 - 03.2022
- Network SME Responsible for Design and implementation and proposals of solutions architecture, ensuring business continuity across banking operations in Argentina, Brazil, Mexico, Spain, and Brazilian stock-market environments.
- Implemented Disaster Recovery strategies using multi-cloud environments, including Azure, OCI, and GCP.
- Led cloud-based security infrastructure projects, enhancing security posture using Fortinet products, including FortiGate firewalls, FortiManager, and FortiAnalyzer.
- Designed and deployed complex multi-vendor networks, delivering ongoing support to maintain operational integrity.
- Led and managed project and BAU teams, ensuring effective operations, conflict resolution, and professional development.
Senior Network and Security Analyst
INSPER
12.2020 - 03.2021
- Administered Cisco SD-Access wired and Wi-Fi networks and security tools, including Cisco Umbrella, AMP, CES, WSA, DNA, and ISE, to enhance network security posture.
- Led Cyber Threat Intelligence and Vulnerability Management projects to identify and mitigate potential security threats.
- Designed and implemented corporate security policies aligned with industry frameworks.
- Managed Cisco ASR1k routers and FTD firewalls to ensure optimal network performance and security.
Security Architect
INFINITY LEARNING SOLUTIONS
01.2020 - 11.2020
- Developed comprehensive networking and cybersecurity solutions leveraging Fortinet, Cisco, Aruba, HP, Dell, Alcatel, Meraki, and Sophos.
- Designed and implemented medium- to large-scale network infrastructures, with a strong focus on wireless and network security solutions.
- Led multidisciplinary teams, driving collaboration and achieving project milestones.
Technology Consultant
NET SERVIÇOS DE COMUNICAÇÃO (CLARO S/A)
05.2014 - 02.2018
- Delivered nationwide operational support, upholding SLA compliance and optimizing network engineering solutions.
- Managed data centre operations, addressing urgent and critical incidents to maintain uptime.
- Supported routers, CMTS, switches, and Oracle DNS-DHCP servers, enhancing network reliability.
- Developed performance indicators and reports for regional management and the Board of Directors.
Datacentre Analyst
NET SÃO PAULO (CLARO S/A)
04.2012 - 04.2014
- Managed international and national link traffic, ensuring optimal performance of Giga Virtua network equipment.
- Utilised advanced monitoring tools, including Nagios, GRB, and BellView, to proactively identify and resolve network issues.
- Configured and maintained network devices (Motorola, Cisco, Arris, Casa Systems) to support seamless connectivity and service reliability.
- Administered DNS and DHCP services, ensuring high availability and security.
IT Infrastructure Analyst
MR CONSULTORIA
09.2011 - 03.2012
- Planned and maintained IT infrastructure and information security solutions for corporate clients.
- Managed third-party contracts and provided VIP support to executives and senior management.
- Implemented and administered Windows Server 2003 environments, backup solutions, and structured networks.
Education
Bachelor's Degree - Computer Networks
Universidade Paulista - UNIP
BrazilMBA - Information Security
Faculdade Descomplica
BrazilSkills
- Networking
- Routing & Switching
- Wireless
- 8021X
- ACLs
- Firewalls
- BGP
- OSPF
- MPLS
- VXLAN
- STP
- HSRP/VRRP
- Cisco Nexus
- DCNM
- Enterprise Wi-Fi (Cisco/Aruba/Meraki)
- Security & Cloud
- Fortinet
- Palo Alto
- Cisco FTD/ASA
- Sophos XG
- IPsec
- SSL VPN
- SD-WAN
- Segmentation
- Hardening
- Azure networking (VNets, vWAN, Firewalls, Load Balancers, NSGs)
- Systems & Platforms
- Windows Server
- Active Directory
- Exchange
- VMware vSphere
- DNS/DHCP
- Infra and secure services
- Service Provider & Data Centre
- ISP-grade networks
- CMTS
- Large-scale DNS/DHCP architectures
- Backbone routing
- Peering
- Traffic engineering
- High-availability design
- Redundancy
- DR strategies
- Monitoring & Troubleshooting
- Auvik
- LogicMonitor
- SolarWinds
- Wireshark/tcpdump
- NetFlow/sFlow
- End-to-end diagnostics across network
- Cisco
- F5
- Sophos
- Meraki
- Aruba
- Ubiquiti
- Checkpoint
- SonicWall
- Dell
- WatchGuard
- PfSense
- Network architecture
- Cybersecurity solutions
- VPN implementation
- Firewall configuration
- Cloud infrastructure
- Network performance monitoring
- Security compliance auditing
- Troubleshooting expertise
- Client needs assessment
- Project lifecycle management
- Problem solving
- Effective communication
- Team leadership
- Technical training
- Staff management
- Subject matter expert
- Integrity and honesty
- Technical review
Certification
- F5 101 - Application Delivery Fundamentals, 2024
- Aruba Certified Switching Associate (ACSA), 2022
- Cisco Certified Network Associate (CCNA), 2020/2022/2025, CSCO13558616
- Cisco Certified Network Associate (CCNA), 2016, CSCO13021590
- Microsoft Certified: Azure Solutions Architect Expert, 2022, I098-2999
- Microsoft Certified: Azure Fundamentals, 2021, H705-7377
- Microsoft Certified Solution Associate (MCSA), 2020, H621-4416
- Microsoft Certified Trainer, 2021/2022/2022/2023
- Fortinet Network Security Expert (NSE) 1, 2, 3, 4, 7, 2021
- Certified Network Engineer (Silver), 2020, IPv6 Forum - CNES-10000952-20
- Security Architecture for System Engineers (SASE), 2021, CSCO13558616
- NIST Cyber Security Framework (CSF) Foundation, 2021, 2775-19943185
- SOPHOS Certified Administrator - XG Firewall
- Ethical Hacking Essential Certificate, 2016, ITCerts - 5F5E44F
- ITIL Foundation Certificate, 2014, GR750128217JC
- Intro to Cyber Threat Intelligence, Cybrary, CC-9860c816-3cc0-4eb9-b253eaab82407417
- CEPTRO.br/NIC.br - IPv6, 2013
- CTI Solutions - SonicWall Basic Firewall, 2011
Timeline
Network and Firewall Consultant
PNSG PARLIAMENT OF SOUTH AUSTRALIA
04.2025 - Current
Senior Systems/Network Engineer
HASTWELL
08.2024 - 04.2025
Senior Network Engineer
COMUNET IT
02.2023 - 07.2024
Network Engineer
BLACKBIRD IT
06.2022 - 02.2023
Consultant / Technical Lead
ACCENTURE
03.2021 - 03.2022
Senior Network and Security Analyst
INSPER
12.2020 - 03.2021
Security Architect
INFINITY LEARNING SOLUTIONS
01.2020 - 11.2020
Technology Consultant
NET SERVIÇOS DE COMUNICAÇÃO (CLARO S/A)
05.2014 - 02.2018
Datacentre Analyst
NET SÃO PAULO (CLARO S/A)
04.2012 - 04.2014
IT Infrastructure Analyst
MR CONSULTORIA
09.2011 - 03.2012
Bachelor's Degree - Computer Networks
Universidade Paulista - UNIP
MBA - Information Security
Faculdade Descomplica