Steven Dolan

Operations Associate

Dublin, County Dublin, Ireland15 yrs 10 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Led strategic datacenter modernization programs at Mastercard.
Expert in network architecture and engineering across multiple platforms.
Strong focus on automation and operational excellence in networking.

Stackforce AI infers this person is a Fintech Infrastructure Engineer with expertise in network architecture and automation.

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Skills

Core Skills

Network ArchitectureNetwork EngineeringIt Management

Other Skills

Enterprise NetworkingInfrastructure ManagementNetwork Performance ManagementAutomationAristaWide Area Network (WAN)Network SecurityVirtualizationNetwork Orchestration and AutomationTCP/IPVPNNetwork AdministrationFirewallsLAN-WANWireless Networking

About

My skill set and areas of work include: Datacenter Networks, Wide Area Networks Network Security, Virtualization, Network Orchestration and Automation . Planning, design, and implementation of resilient business systems and network architectures. I currently hold the CCNP Route Switch, CCNA Security, CCNA Data Center and VMware Certified Professional - Data Center Virtualization Certifications, I am working towards the CCIE Data Centre Certification,

Experience

15 yrs 10 mos

Total Experience

3 yrs 2 mos

Average Tenure

6 yrs 10 mos

Current Experience

Mastercard

3 roles

Manager Network Engineering

Promoted

Jan 2025 – Present · 1 yr 4 mos

Lead and manage the EMEA Network Engineering organisation across datacenter, campus, WAN, and security functions.
Oversee deployment, and lifecycle management of next-gen datacenter fabrics.
Drive an automation-first strategy using CI/CD pipelines, templating standards, and integrated monitoring.
Translate business requirements into scalable network architectures that support Mastercard’s global platforms.
Lead strategic programmes such as datacenter modernisation, fabric rollouts, application onboarding, and infrastructure lifecycle upgrades.
Partner with global engineering teams to standardise architecture, processes, and delivery methodologies across regions.
Manage, coach, and develop high-performing engineers; build capabilities in next-gen networking, automation, and operational excellence.
Oversee critical maintenance operations, complex changes, and production stability across EMEA sites.
Ensure governance, regulatory compliance, and alignment with Mastercard’s security and reliability standards.

Network ArchitectureNetwork EngineeringEnterprise NetworkingInfrastructure ManagementNetwork Performance Management

Lead Network Engineer

Promoted

Sep 2021 – Jan 2025 · 3 yrs 4 mos

Supports and assists with the design, architecture, implementation, security and support of large multi-site, multi-vendor MPLS network communication environments.
Major Accountabilities:
Manage and implement network projects.
Develop detailed requirements for upgrading existing corporate and MasterCard networks,
Re-architecting network segments in order to facilitate new requirements,
Resolves network communications and operations problems impacting customer or backbone
Participates in telecommunications-related initiatives.
Research and develop innovative solutions around unified network solutions.
Supports assigned regional projects,
Supports Vendor management.

Network EngineeringIT ManagementAristaWide Area Network (WAN)

Senior Network Operations Engineer

Jul 2019 – Sep 2021 · 2 yrs 2 mos

Perform Tier II Network support to the MasterCard business.
Provide Network support to project teams in support of infrastructure deliverables.
Perform proactive network analysis to ensure network integrity and performance.
Create or update documentation to support the environment as required.
Plan, coordinate and implement changes to the network following change control processes.
Produce reports in support of any issues resolved or progressed by you.

Heanet

Senior Network Engineer

Oct 2018 – Jul 2019 · 9 mos · County Dublin, Ireland

HEAnet is Ireland’s National Education and Research Network, providing internet connectivity and associated ICT services to education and research organisations throughout Ireland.
Supported and maintained HEAnet's core, access and data centre network infrastructure, Contribute to configuration, management and maintenance of network equipment (Cisco, Juniper and Arista router and switch infrastructure. Proactively ensure networks, server and environmental infrastructure are available and secure Troubleshoot routing, switching and connectivity issues on IPv4 and IPv6 unicast and multicast networks, through to problem resolution and permanent fixes.
Communicate with telecoms network and network equipment providers, Assist in the testing of new and existing network systems, Produce documentation for all changes made and systems deployed.
Mentor more junior staff in basic network administration, Work with the other technical and research teams to provide robust networking solutions.
Primary Technical Engineer for Datacentre Services Hosting hardware migration from Cisco to Arista

AristaNetwork Engineering

Arkphire

Senior Network Engineer

Jul 2015 – Oct 2018 · 3 yrs 3 mos

Arkphire are a Cisco Gold Partner, a Dell EMC Titanium Partner, VMWare and Palo Alto Partner.
My areas of work included the design, configuration, installation, administration and maintenance of Core and edge LAN and WAN networking and security equipment and services. I design, implement and manage multi-vendor network security appliances and secure access solutions. I am a point of escalation to tier 1 & 2 engineers, Troubleshooting and resolving complex layer 1 to 7 issues. The creation and maintenance of detailed technical documentation on infrastructure high and low level design. Maintaining detailed documentation of customer specific records. Monitoring network and systems performance, collaborating with System Engineers & Architects on optimization or troubleshoot of system issues using systematic change control processes based around the ITIL framework.
Technologies, hardware and systems include but are not limited to:
Cisco Networking, Routing, Switching, Security and Compute:
Cisco ISR 800, 1800, 1900, 2800, 2900, 3800,3900, 4200, 4300 Series.
Cisco Catalyst & IOS 2960,3650,3750, 3850, 4500, 6500. ACE Load balancer
Cisco Nexus-OS: 1000v, 2000, 5000.
Cisco ASA 5500, 5500-X, FWSM, Context Based Firewalling.
Cisco UCS: Fabric Interconnect 6200 Series & UCS B Series Chassis.
Cisco Meraki: MR, MS, MX.
Various Firewall, Security and UTM Appliances:
ASA + Firepower.
Palo Alto.
Checkpoint.
Sonicwall.
FortiGate.
Sophos.
PIX.
Network Traffic Analyzers and Sniffers:
Wireshark.
TCPdump.
Snort.
Nmap.
Virtualization Technologies:
VMWare VCenter 5 - 6.5
VMWare ESXi 5 - 6.5
Microsoft Hyper V 2008 -2012-R2.
Microsoft Windows Server 2003 - 2012 R2
Various Networking products:
Arista.
Dell.
Brocade.
HP.
Aruba.

Jennings o'donovan & partners

Network Administrator

Feb 2014 – Jul 2015 · 1 yr 5 mos · Ireland

Responsible for maintaining and installing business systems and network infrastructure based around Microsoft Server Technologies while delivering a high quality, customer-focused professional service. Providing the very highest level of technical support and customer service to internal staff. Supporting a multi-site IT infrastructure of at least 50 employees, Communicating, collaborating and negotiating with users, specialists, third parties, other staff and suppliers.
Areas of work and technology:
Rollout of Windows 8.1 and Office 365
Migration from Windows XP to 8.1
Migration from Windows Server 2003 to 2012
Microsoft Exchange migraton
Intranet Apps IIS Migration, Sage ect.
Create, maintaining and update documentation.
Windows XP, Vista, 7 and 8.1.
Office 2003, 2007, 2010, Office 365.
Server 2003, 2008, 2012. Active Directory,
GPOs, DNS,DHCP, IIS, NFS.
Hyper-V. VMWare
Google Apps hosted Mail.
Office 365 in Cloud Mail
ArcServe D2D. Disaster Recovery, Daily backups.
HP,Sonicwall, Linksys, Zyxel, Cisco, 3com.
Unified Security Appliance, Firewall, Router, Switch.
LAN/WAN, NAT, L2TP, Dial-in-VPN, Site-to-site VPN.
Voice over IP(VOIP), Asterisk. Voice Over VPN.
Video Conferencing.

Hse west

Junior IT Helpdesk Analyst

Jan 2008 – Jan 2008 · 0 mo · Sligo

Work Experience as a Junior ICT Helpdesk Analyst. Worked alongside helpdesk team providing advice, support and practical assistance to system users via the IT service desk telephone system and remote support software tools.