Summary
Overview
Work History
Education
Skills
Accomplishments
Languages
Timeline
Generic

Gajaka Weerasinghe

Downingtown,PA

Summary

Dynamic IT Leader with extensive experience at ProSight Specialty Insurance, specializing in firewall management and network design. Proven track record in enhancing operational efficiency and mentoring teams. Expert in routing protocols and DNS management, driving impactful projects that optimize resource allocation and ensure robust cybersecurity measures.

Overview

11
11
years of professional experience

Work History

Sr. Network Engineer

Aramark Inc
01.2021 - Current
  • Designed and implemented network architecture to enhance system performance and reliability.
  • Managed configuration and troubleshooting of routers, switches, and firewalls for optimal network security.
  • Conducted regular network assessments to identify vulnerabilities and recommend improvements.
  • Led cross-functional teams in deploying scalable networking solutions across multiple locations.
  • Designed and implemented robust network infrastructure to support organizational operations and enhance connectivity.

IT Leader- Infrastructure

ProSight Specialty Insurance
09.2018 - 01.2021
  • Led cross-functional teams to streamline project workflows and enhance collaboration.
  • Developed and implemented strategic initiatives to improve operational efficiency across departments.
  • Mentored junior staff, fostering professional growth and improving team performance.
  • Analyzed data trends to inform decision-making and optimize resource allocation.
  • Design and manage network teams infrastructure, security & monitoring with proper solutions to the business in team work effort. Produce technical diagrams and supporting documents, handling IT group team meetings listen and provide direction aligned with team members approach to projects, manage IT budget and Vendor contracts.
    Check Point & FortiGate firewall policy implementation and security measures with reverse proxy set up for certain applications.
    Configure all Juniper EX 4300/3400 switches with iBGP/eBGP routing for all locations and FortiGate firewalls(HA) with A-A and A-P
    Create site to site VPNs and deployed Forti-Manager, Forti-Authenticator and Forti-Analyzer in AWS cloud to use as a single point of control all for cyber threat mitigations
    Deployed Forti-planer and create all heat maps for multiple locations in AWS cloud to monitor wireless signal strengths and adjust frequencies on dual radios.
    Setting up new 1GB MPLS and 500MB DIA circuits to all locations for control all data transmissions to have self-efficiency and routing setup with IPSLA for automatic failover with redundant hardware and circuits
    Manage all project deadlines to drive the business without any network interruptions strictly follow ITIL rules
    All IT owners are held accountable for the state of their controls and understand their responsibilities as to risk mitigation and remediation as well as compliance to Security policy & standards, for internal and external audit, regulatory & legal liabilities.
    Support network & Application for AWS cloud teams with Transit-gateway and VPC peering & full access to DevOps teams application monitoring
    Working knowledge of application monitoring PaaS with Sensu.io/PRTG/Splunk
  • Facilitated training sessions on best practices, ensuring consistent process adherence among team members.
  • Oversaw day-to-day activities of 7 employees in establishment, fostering inspiring atmosphere to optimize employee experiences.
  • Overcame challenging deadlines and resource limitations by reallocating personnel and focusing on priority tasks.
  • Mentored junior staff members, helping them develop leadership skills and advance their careers within the organization.
  • Led team by answering complex customer questions and mentoring personnel one-on-one.
  • Developed effective improvement plans in alignment with goals and specifications.
  • Generated reports detailing findings and recommendations.
  • Frequently inspected production area to verify proper equipment operation.
  • Supported creation of detailed, technical financial models to value potential acquisition targets.

IT Leader

Impax Pharmaceuticals
06.2015 - 09.2018
  • Led IT infrastructure projects, ensuring alignment with organizational goals and objectives.
  • Managed team of IT professionals, fostering collaboration and professional development.
  • Developed and implemented IT policies and procedures to enhance operational efficiency.
  • Oversaw software deployment and system upgrades to improve service delivery.
  • Monitored cybersecurity protocols, ensuring compliance with industry standards and regulations.
  • Managed vendor relationships for hardware, software, and services procurement, ensuring quality products at competitive prices.
  • Coordinated IT operations activities to deliver smooth flow of daily business needs.
  • Contributed to the successful completion of numerous high-profile projects by providing expert guidance on technology strategy, infrastructure design, and implementation best practices.
  • Evaluated emerging technologies to identify opportunities for innovation and improvement within the organization's IT landscape.
  • Improved network efficiency by implementing new server configurations and optimizing system operations.
  • Oversaw daily performance of computer systems and immediately responded to network issues to keep network up all times
  • Created and terminated user's accounts from start to finish in business applications.
  • Analyzed network security and current infrastructure, assessing areas in need of improvement.

Sr. Network Engineer

Sunoco LP
03.2014 - 06.2015
  • Collaborated with IT teams to ensure seamless integration of new technologies and services.
  • Analyzed network traffic patterns to optimize bandwidth usage and improve overall efficiency.
  • Monitored network activities to quickly detect and resolve operational and security issues.
  • Led planning and technical design activities for routine operations and special projects.
  • Standardized processes and procedures for network maintenance and configuration changes, reducing errors and streamlining operations.
  • Configured, tested and maintained LAN/WAN components and connections.
  • Installed and configured network security solutions such as VPNs, Firewalls and intrusion detections and mitigation tools.
  • Architected high-availability networks incorporating redundancy at all levels for seamless failover during outages or maintenance events.
  • Established and monitored key performance metrics to verify consistent compliance with important networking standards.
  • Improved system reliability through proactive monitoring of network performance metrics and capacity planning initiatives.
  • Managed vendor relationships for hardware procurement, software upgrades, and technical support services to ensure optimal resource utilization.
  • Led successful migration projects for data center consolidations and cloud transitions while minimizing disruption to business operations.
  • Planned and implemented effective disaster recovery and business continuity solutions.
  • Improved network operation by incorporating new technologies into existing designs.
  • Provided network support services for devices such as hubs, bridges, routers, and other hardware.
  • Managed, tracked, and coordinated problem resolution and escalation processes.
  • Created VPN infrastructure and allowed for secure remote connections.
  • Collaborated with engineering to report issues, manage project deliverables and provide status reports.
  • Developed network test and validation processes to maintain alignment with solution design.
  • Identified means to reduce and control expenses by conducting cost, schedule and contract performance analysis and improving resource allocation.

Education

Associate of Applied Science - Science Education

Ananda College
Colombo, Sri Lanka

Bachelor of Science - Applied Mathematics

University of Colombo
Colombo, Sri Lanka

Master of Science - Master’s Degree (MSIS)

Penn State University
Great Valley, PA

Skills

  • Firewall management(Check point & FortiGates)
  • Certificate management with Venafi
  • Wireless network design-Aruba
  • Routing protocols expertise
  • DNS management with Infoblox
  • Switch configurations
  • DHCP management with Infoblox/solarwinds and local servers

Accomplishments

  • Supervised team of 7 staff members.
  • Documented and resolved network issues which led to sudden bugs in software versions (CVE).

Languages

English
Full Professional

Timeline

Sr. Network Engineer

Aramark Inc
01.2021 - Current

IT Leader- Infrastructure

ProSight Specialty Insurance
09.2018 - 01.2021

IT Leader

Impax Pharmaceuticals
06.2015 - 09.2018

Sr. Network Engineer

Sunoco LP
03.2014 - 06.2015

Associate of Applied Science - Science Education

Ananda College

Bachelor of Science - Applied Mathematics

University of Colombo

Master of Science - Master’s Degree (MSIS)

Penn State University

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