Alfonso Trevignani
Verified Expert in Engineering
DevOps Engineer and Developer
Santa Fe, Argentina
Toptal member since December 13, 2021
Alfonso is an engineer with a 20+ year career. He has solid experience in servers and network administration, DevOps (automation), and cloud and data center infrastructure. Previous roles include Chief Information Officer (CIO), ITU standards editor, and host committee chairman of the World Smart City Forum. An MBA and his experience at The World Bank (where he received a Spot Award) sharpened his leadership skills.
Portfolio
Experience
Availability
Preferred Environment
Cisco, Terraform, CI/CD Pipelines, Windows Server, Amazon Web Services (AWS), Networking, Linux Server Administration, Cloud Security, DevOps Engineer, Git
The most amazing...
...project I deployed was a cryptocurrency app cloud infrastructure using blockchain Stellar network, Terraform, Git, pipelines, and serverless architectures.
Work Experience
Systems Administrator
MFR - MicroFinanza Rating
- Mounted infrastructure on Linux operating systems. Services included email, database engines, web hosting, naming services, firewall, and security.
- Managed cloud infrastructure (AWS). Designed and implemented AWS solutions (EC2, RDS, S3, CloudFront, Workspaces, VPC, Route 53, and SES).
- Configured and maintained operating systems. Monitored and optimized performance. Provided back-up solutions.
Networking, Cloud, and Data Center Infrastructure Engineer
SoliSYSTEMS
- Automated implementation of a cryptocurrency app cloud infrastructure using the blockchain stellar network, Terraform, Git repositories, Bitbucket pipelines, and serverless architectures (AWS ECS Fargate, ECR, RDS, S3, CloudFront, ALB, VPC, and SES).
- Elaborated and deployed Payment Card Industry Data Security Standard (PCI DSS) Report on Compliance (RoC) to annually validate PCI compliance for an ATM network.
- Designed the VPN infrastructure for US ATM machines authenticated against on-premises data center infrastructure.
- Designed and implemented a Windows Server Failover Cluster solution for real-time scheduling and monitoring at a Nissan car factory.
- Migrated a co-location center with 20 different services and servers to AWS cloud.
- Managed the company network which included designing the LAN and WAN network, and providing administration, implementation, and support.
- Provided network services architecture set up and administration. Most of it was based on GNU/Linux and Windows operating systems (electronic mail, database engines, web hosting, name services, firewalling, VPNs, security, LDAP, back-up).
- Managed the cloud infrastructure (AWS, Rackspace, Google Cloud Platform). Designed and deployed AWS and solutions (EC2, RDS, S3, CloudFront, Workspaces, VPC, Route 53, and SES).
DevOps Engineer For Automating Deployments
Martingale Media, LLC
- Worked as a DevOps engineer assisting the company in converting its infrastructure and automating deployments. Implemented the defined requirements for automated deployments.
- Automated deployment, development, staging, and production environments. Used AWS CloudFormation and Terraform.
- Implemented a centralized monitoring solution. Created cross-account monitoring dashboards using Amazon CloudWatch for app environments. Finalized the solution using AWS CloudTrail to centralize the logging of events for all AWS accounts.
- Used Amazon Route 53 and Amazon API Gateway. Completed online migration with DynamoDB with zero downtime. Set up rollbar integration with Terraform. Developed a web application firewall for rule creation. Integrated with SendGrid and Terraform.
CIO (Chief Information Officer)
Universidad Tecnológica Nacional
- Oversaw infrastructure, technical support, and systems development under the secretary of information and communication technologies at UTN-FRSF. Planned and managed activities related to information and communication technologies.
- Led the migration of data and network services to the Microsoft Azure cloud.
- Coordinated the operation, maintenance, and optimization of communications networks, data center, and voice, video, and data communication networks.
- Ensured the development, implementation, and maintenance of information systems providing the necessary services and information on time.
- Promoted the effective and efficient operation of information systems, especially regarding computer equipment, the use of applications, and network services.
- Managed and advised on issues related to information systems for hardware and software. Guided and recommended strategies to achieve and maintain the normal functioning of computer and communications equipment.
System Administrator and Cloud Architect
Sitejabber
- Managed Cloud Infrastructure (AWS). Designed and deployed AWS solutions (EC2, RDS, S3, CloudFront, Workspaces, VPC, Route 53, and SES).
- Designed and implemented an HA solution with AWS Load Balancer and autoscaling groups. Designed and deployed a CI/CD pipeline using Jenkins and Ansible.
- Deployed network services architecture set up and administration. Hosted services on Linux operating systems (electronic mail, database engines, web hosting, name services, firewalling, security).
- Analyzed security in network devices and infrastructure. Managed compromised web server security.
- Set up and maintained operating systems. Monitored and optimized performance. Provided back-up solutions and implemented IaaS, PaaS, and SaaS.
- Implemented monitoring and alert systems using Monit and AWS CloudWatch with notifications to mail and Slack channels reducing system downtime.
Smart Cities and IoT Consultant
International Telecommunication Union
- Coordinated the survey of key performance indicators (KPI) for smart and sustainable cities (SSC) at the request of the Municipalities of the Cities of Santa Fe and Esperanza, Argentina.
- Performed a consultancy study to define the basis of elaborating a National Plan of IoT (Internet of Things) at the request of the Secretariat of Information Technologies and Communications (SETIC) of the Ministry of Modernization of Argentina.
- Served as Host Committee Chairman of the 10th ITU Kaleidoscope Academic Conference and 3rd World Forum of Smart Cities. Topic: Machine learning for a 5G future.
- Coordinated the Argentine team of the ITU-T sector in the project "Argentine Universities in the ITU" of the Universidad Tecnológica Nacional.
- Assisted with the ITU-T Y.4000 Supplement 32 Series Editor: Smart Sustainable Cities, A Guide for City Leaders and the Standard Y.rrm-data: Oversaw the requirements and reference model of data related to IoT in the infrastructure of cities.
Professor of the Graduate Course "ITU and International ICT Organizations"
Universidad Tecnológica Nacional
- Addressed the development of ICT from the study of the organizations that promote it and their actions in this regard.
- Answered several questions: How ICT evolved and where are they going, what are the principles that govern this evolution, what is a technical standard and how is it drawn up, and how are standards established?
- Taught how the International Telecommunications Union (ITU) intervenes in the development of ICT. Outlined the recommendation and clarified the requirements to be a member of that body.
Instructor
Cisco Networking Academy
- Trained LAN, WAN, and WLAN design, installation, and administration LAN: TCP/IP Protocols, VLANs and VTP, 802.1q Trunking, Load Balancing, and HSRP.
- Trained WAN: PPP, PAP, and CHAP authentication. PPP over Frame Relay. Frame Relay router and switch configuration. ISDN configuration. Dial-on-demand routing over ISDN and PSTN. Backup links.
- Taught structured cabling: Organized and conducted different structured cabling projects that included installation, rough-in, trim out, finish phases, and network cabling testing and certification.
- Trained security: Firewall and Access Lists, PPTP VPN operations, NAT and PAT. Network troubleshooting and monitoring using SNMP and RMON. VPN configuration for remote users and VoIP configuration.
Director of Communications and Data Center
Universidad Tecnológica Nacional
- Managed the UTN-FRSF network infrastructure, including video conference services, IP telephony, server hosting, corporate WiFi infrastructure, back-up systems, server virtualization platform, internet links, and file repository.
- Designed and implemented IP networks. Configured network devices: Multilayer switches, storage, WAN routers, and proxy servers. Managed Linux and Microsoft Windows operating systems. Configured and managed network services.
- Audited network security: Firewalling and security policies.
- Managed a team of ten as project manager, assigning tasks and providing technical leadership.
Network Administrator
Universidad Tecnológica Nacional
- Installed and managed the business’ web front and corporate services running on Linux servers and Cisco routers and switches. Managed Windows Server, Active Directory, and different Microsoft roles.
- Implemented and managed VMware and hyper-v virtualization infrastructure and storage devices. Designed a database for DHCP and DNS records using PHP and MySQL. Served as DNS and DHCP host master.
- Analyzed, designed, and implemented a new IP network infrastructure solution that provided integrated network services.
- Involved in the planning and realization of a new cabling structure (twisted pair, category 6a) in different areas of the building. Conducted network cabling testing and certification. Operated network digital cable analyzers.
- Implemented network security and firewalls, Squid web proxy cache, and IP masquerading (Source NAT). Implemented load-balanced fault-tolerant links.
- Provided customer technical support, network administration, troubleshooting and monitoring, set up and maintenance of computers, software, and hardware.
Information Analyst, IT Coordinator
World Bank Group
- Evaluated client needs and provided solutions addressing systems. Promoted greater availability, accessibility, and effective dissemination and use of information. Managed devices and provided support for meetings, conferences, and seminars.
- Supported over 120 users, helping them solve hardware, software, and network problems. Provided department-level network administration, including routine troubleshooting, accounts creation, and upgrades.
- Provided Lotus Notes support, including the configuration of home systems and the preparation of laptop configurations for traveling staff. Remote access assistance.
- Supported staff in SAP, Microsoft Office software, and World Bank applications. Designed and created a sector unit website. Operated and managed Windows Server. Managed Active Directory.
Experience
DevOps-automated Cloud Infrastructure Implementation for Mobile Payment Application
https://www.solisystems.com/solimarket/Datacenter Infrastructure Migration to Cloud
The services implemented were provided with the characteristics of load balancing, fault-tolerant, autoscaling, and serverless architecture.
After the migration, the infrastructure savings were about 20%, only considering the co-location costs and not hardware acquisition costs. There was also a considerable reduction in deploying time of new services and projects from days to hours.
PCI DSS Compliance
Education
Master of Arts Degree in Business Administration (MBA)
Universidad Nacional del Litoral - Santa Fe, Argentina
Master's Degree in Enterprise Networks and Systems Integration
Universitat Politecnica de Valencia (UPV) - Valencia, Spain
Engineer's Degree in System Engineering
Universidad Tecnológica Nacional - Santa Fe, Argentina
Certifications
Cisco Certified Network Professional (CCNP)
Cisco
Cisco Certified Network Associate
Cisco
Certificate in Advanced English
Cambridge Assessment English
Skills
Libraries/APIs
Jenkins Pipeline, Rollbar
Tools
VPN, Cluster, Wireshark, ACL, Hyper-V, AWS, Amazon Virtual Private Cloud (VPC), AWS, Amazon Elastic Container Service (ECS), AWS, AWS Systems Manager, AWS, AWS IAM, Terraform, Git, Bitbucket, VMware, Squid, Stellar SDK, Jira, Apache, Slack Development, Monit, Nagios, Nginx, Jenkins, AWS, Ansible, Lotus Notes, AWS, AWS Key Management Service (KMS), AWS CloudTrail, SonarCloud, SendGrid
Languages
SQL, Bash Script, Bash, PHP
Paradigms
Web Development, Agile Development, DevOps, Continuous Integration (CI), Agile Development, Software-defined Networking (SDN), Automation
Platforms
Linux, Windows Development, AWS, Linux, Amazon EC2, AWS ALB, Azure, Blockchain, Web Development, Docker, AWS Lambda
Storage
Data Centers, MySQL, MySQL, Amazon S3, Database, PostgreSQL, Azure, Database, Memcached, MongoDB, Redis, Amazon EFS, AWS
Frameworks
Locust
Other
Cisco, Networking, IT Systems Engineering, Cloud Engineering, Systems Engineering, System Security, TCP/IP, IT Infrastructure, Cloud Infrastructure, Telecom Equipment & Solutions, Virtualization, CCNA, CCNP, LAN, WAN, IP Routing, IP Networks, Cisco Routers, Cisco Switches, Email, DNS, Data Center Migration, Data Center Infrastructure, Failover Solutions, Operating Systems, Server Backups, Cisco Wireless, Routing, Dynamic Routing, Routing Optimization, LAN Devices, Wireless, Access Points, Ethernet, VLANs, NAT, DHCP, SSH, Network Administration, SMTP, SNMP, ICT Training, Information & Communications Technology (ICT), Hybrid Cloud Infrastructure, Information Systems, Data Communication, Virtualization, Internetworking, Ubuntu Server, POP, IMAP, Servers, Fault Tolerance, Amazon Route 53, AWS RDS, Elastic Load Balancers, AWS Auto Scaling, System Security, WLAN, VLAN Trunking Protocol (VTP), Dynamic Load Balancing, HSRP, Network Access Control, Linux Server Configuration, Linux, AWS Cloud, Identity & Access Management (IAM), Cloud Security, Server Security, Relational Database Services (RDS), Systems, Networks, Architecture, System Administration, CI/CD Pipelines, AWS DevOps, Smart Cities, IP Telephony, Securities, LDAP, PCI DSS, English Language Assessment, SAN Switches, Storage, Intrusion Prevention Systems (IPS), Fiber Optics, Pipelines, DevOps, VoIP, University Teaching, Technical Instruction, Key Performance Indicators (KPIs), Artificial Intelligence, Smart City Technology, CIO, Hardware, Software Development, Voice, Video Conferencing, Clustering, VoIP, WiFi, Backups, File Servers, Proxy Servers, System Security, IT Project Management, Proxies, Load Balancers, Troubleshooting, Monitoring, Optimization, Point-to-Point Tunneling Protocol (PPTP), Infrastructure as Code (IaC), PCI, PCI Compliance, Vulnerability Assessment, Vulnerability Management, Access Control, Information Security, Policy, IT Security, Business Administration, Multiprotocol Label Switching (MPLS), Public Switched Telephone Network (PSTN), 5G, Machine Learning, ISO Standards, ANSI Standards, Technical Standards, Technical Support, Economic Development, Applications, Cabling, Web Hosting, Remote Support, Accounts, SAP, Web Development, Active Directory Programming, Deployment, Web Application Firewall (WAF), Amazon API, SSL Certificates, AWS, SSO Engineering, AWS Control Tower, ISO Compliance
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