Panaiotis Deliyannis
London,Great London
Summary
Highly skilled network professional with expertise in Cisco technologies, including advanced routing and switching, collaboration tools, and wireless network security. Proficient in protocols such as BGP, OSPF, and EIGRP, alongside advanced troubleshooting and technical leadership capabilities. Demonstrates strong competencies in network provisioning, assurance, automation workflows, and mentoring. Adept at leveraging Cisco DNA Center, Identity Services Engine, and ASA firewalls to optimise network performance and security. Committed to driving innovation and operational excellence within complex networking environments.
Accomplished Designer with extensive experience managing product design and development lifecycles. Plans and problem-solves tactically to eliminate delivery delays. Monitors emerging trends and technology for innovative, forward-thinking client support.
Resourceful employee with outstanding knowledge to develop and maintain healthy customer pipeline. Consistently works to attract new business opportunities. Talent in administrative oversight, recruitment processes and customer service improvements.
Overview
20
20
years of professional experience
11
11
years of post-secondary education
1
1
Certification
Work history
Solution Design Specialist
Vodafone UK
London
2013.11 - 2023.10
- Enhanced network scalability and performance → Designed and implemented Cisco routing, switching, and Meraki SD-WAN solutions for enterprise and government clients
- Minimized downtime during transitions → Evaluated LAN/WAN infrastructures, developed detailed Low-Level Designs, and led complex migration strategies
- Improved wireless network security and performance → Provided expert L3-level support for live routing and switching deployments, specializing in Meraki SD-WAN and WiFi optimization
- Accelerated network modernization → Tested and validated new Meraki and Cisco technologies, delivering actionable feedback to product teams
- Optimized network performance and technology upgrades → Collaborated with cross-functional teams including security and infrastructure
- Participated in brainstorming sessions, contributing innovative ideas towards project improvement.
- Achieved consistency across all visual elements by adhering to brand guidelines.
- Executed high quality designs using allocated resources and budget.
Customer Design Engineer
Cable & Wireless Worldwide
London
2011.11 - 2013.03
- Delivered end-to-end LAN/WAN and routing solutions using Cisco switches and routers, and implemented Quality of Service to optimize network performance.
- Assessed Requests for Proposals (RFPs) and technical proposals, ensuring solutions aligned with client-specific routing and switching requirements and standards.
- Provided Level 4 technical expertise and advanced troubleshooting support to field teams during complex network migrations involving Cisco infrastructure.
- Worked closely with clients, ensuring satisfaction on deliverables.
- Optimised design processes for improved efficiency.
Network Architect
KDDI Europe (Sub. of KDDI Corporation)
London
2008.05 - 2011.11
- Architected and optimized WAN, MAN, and LAN topologies using Cisco routing protocols such as EIGRP, BGP, OSPF, and switching technologies.
- Led multi-site projects involving routing redistribution, VLAN configuration, and WiFi deployments for global clients such as Bank of Tokyo Mitsubishi.
- Conducted network performance analysis and implemented proof-of-concept networks to validate new Cisco routing and switching solutions.
- Implemented scalable networks as per organisation's growth projections, ensuring sustainable expansion over time.
IP Solutions Engineer
British Telecom Global Services
London
2004.02 - 2008.04
- Designed and commissioned resilient Cisco router-based WAN solutions for NHS N3 and HBOS projects, emphasizing routing and switching stability.
- Configured CPE routers (1700/2600/2800/7200 series) with access control lists and Quality of Service policies to improve security and network performance.
- Troubleshot and optimized multi-site LAN/WAN environments using advanced Cisco tools, ensuring reliable and efficient network operations.
- Resolved complex technical issues with proactive troubleshooting techniques.
IT Consultant
Citizens Advice Bureau
Twickenham
2004.01 - 2004.03
- Designed and installed WiFi access points, expanding wireless coverage to improve organisational connectivity and support operational needs.
- Supported LAN infrastructure upgrades, enhancing network stability and performance through effective hardware and software coordination.
- Administered Active Directory services, ensuring secure and efficient user authentication and authorization across the network.
- Generated significant cost savings by optimising hardware usage and maintenance.
Education
NVQ Level 1 - Computing & Design
Open University
London, UK 2010.01 - 2012.01
Higher National Diploma - Computer Networking - CIsco Technologies
Fast Lane IT
London, UK 2005.01 - 2008.01
Cisco Certifications
2003.01 - 2004.01
Britannia IT Training Academy
London, UK 2003.01 - 2004.01
University of Passo Fundo
Brazil 1993.01 - 1997.01
Skills
- Core Network Skills
- Cisco Routing & Switching Advanced
- BGP / OSPF Intermediate
- CISCO Collaboration Technologies Professional
- EIGRP Limited
- Security Professional
- QoS Advanced
- Network Troubleshooting Professional
- Wireless & Security
- Cisco Wireless Professional
- Wireless Network Security Professional
- Soft Skills
- Technical Leadership Professional
- Advanced Troubleshooting Full
- Mentoring Intermediate
- Voice Professional
- Tech Abilities
- Cisco Technologies & Tools
- Cisco ACI Limited
- Cisco DNA Center Professional
- Cisco Identity Services Engine Professional
- ASA Firewalls Limited
- Configuration Templates Limited
- Network Provisioning Professional
- Automation Workflows Limited
- Network Assurance Professional
Languages
Languages: Portuguese (Native), English (Fluent)
Native
English
Advanced
Spanish
Elementary
References
References: Available on request
Hobbies and Interests
Home lab development, testing emerging technologies, 3D printing, photography, playing basketball, and travel.
Accomplishments
- Vodafone UK
- Enhanced network scalability across multiple sites → Designed and deployed Cisco Meraki SD-WAN across 40+ enterprise sites, improving WAN reliability and reducing MPLS dependency.
- Increased resilience and remote site survivability → Architected LAN/WAN infrastructure for Centrica PLC, integrating Cisco ASA firewalls and ISR routers with SRST
- Standardised design process → Developed bandwidth design templates for Cisco IPT/SD-WAN, adopted by the design team.
- Cable & Wireless Worldwide
- Centralised network for NHS Direct → Led design and migration of LAN/WAN solution using Cisco routers and switches with EIGRP/BGP routing.
- Migrated 5,000 users → Upgraded switching infrastructure for Shopping Direct Group to Cisco v7.6 cluster, optimising LAN performance
- Boosted team efficiency → Created standardised design estimation templates for routing, switching, Voice projects
- KDDI Europe
- Migrated WAN across 25 European sites → Planned and executed EIGRP/BGP routing, access-lists, and prefix-lists on Cisco infrastructure for NSK Europe
- Supported 250+ users → Designed LAN/WAN and WiFi solutions for Itochu, London, using Cisco ISR G2 routers and wireless IPT
- Delivered scalable network → Built resilient LAN/WAN architecture for Bank of Tokyo Mitsubishi with load-balanced Cisco ISR routers and enhanced switching capacity.
- British Telecom (BT)
- Optimised WAN performance for 25 European sites → Managed migration, configuring Cisco routers with EIGRP, BGP, and QoS for NSK Europe
- Deployed multi-location LAN and WiFi → Integrated Cisco ISR G2 gateways and wireless access points for Itochu, London.
Text
Personal
Certification
CCNA, CCNP Enterprise, CCNP Collaboration
CCDA, CCDP
Engineering Cisco Meraki Solutions (ECMS)
Microsoft MCP
Comptia Netwoprk +
Comptia A+
Affiliations
- Home LAB, Testing new tech, Playing Basketball, Photography
Timeline
Solution Design Specialist
Vodafone UK
2013.11 - 2023.10
Customer Design Engineer
Cable & Wireless Worldwide
2011.11 - 2013.03
NVQ Level 1 - Computing & Design
Open University
2010.01 - 2012.01
Network Architect
KDDI Europe (Sub. of KDDI Corporation)
2008.05 - 2011.11
Higher National Diploma - Computer Networking - CIsco Technologies
Fast Lane IT
2005.01 - 2008.01
IP Solutions Engineer
British Telecom Global Services
2004.02 - 2008.04
IT Consultant
Citizens Advice Bureau
2004.01 - 2004.03
Cisco Certifications
2003.01 - 2004.01
Britannia IT Training Academy
2003.01 - 2004.01
University of Passo Fundo
1993.01 - 1997.01