Alfonso is available for hire
Hire AlfonsoAlfonso Trevignani
Verified Expert in Engineering
DevOps Engineer and Developer
Santa Fe, Santa Fe Province, Argentina
Toptal member since December 13, 2021
Bio
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
MFR - MicroFinanza Rating
Linux, Ubuntu Server, Email, SMTP, Databases, MySQL, PostgreSQL, Redis...
SoliSYSTEMS
IP Networks, Networking, LAN, WAN, IP Telephony, Linux, Windows Server, Email...
Martingale Media, LLC
DevOps, DevOps Engineer, IT Infrastructure, Automation, Deployment...
Experience
- Linux Server Administration - 20 years
- Windows Server - 20 years
- Networking - 20 years
- Cisco - 20 years
- CCNP - 10 years
- Amazon Web Services (AWS) - 8 years
- Cloud Infrastructure - 8 years
- DevOps Engineer - 2 years
Availability
Part-time
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
2020 - PRESENT
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.
Technologies: Linux, Ubuntu Server, Email, SMTP, Databases, MySQL, PostgreSQL, Redis, Amazon ElastiCache, MongoDB, Amazon Route 53, DNS, Securities, Cloud, Cloud Infrastructure, Amazon EC2, Amazon RDS, Amazon S3 (AWS S3), Amazon CloudFront CDN, Amazon Virtual Private Cloud (VPC), Amazon Simple Email Service (SES), Operating Systems, Monitoring, Optimization, Backups, Elastic Load Balancers, AWS Auto Scaling, AWS Cloud Architecture, Linux Server Administration, Linux Server Configuration, Identity & Access Management (IAM), Bash, Apache, Monit, Nagios, Cloud Security, Server Security, AWS DevOps, DevOps Engineer, DevOps, Network Administration, Ubuntu Linux, Technical Instruction, Architecture, IT Security, System Administration
Networking, Cloud, and Data Center Infrastructure Engineer
2010 - PRESENT
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).
Technologies: IP Networks, Networking, LAN, WAN, IP Telephony, Linux, Windows Server, Email, Databases, Hosting, Cloud, DNS, Firewalls, VPN, Securities, LDAP, Data Center Migration, Data Center Infrastructure, Amazon Web Services (AWS), Failover Solutions, Cluster, Operating Systems, PCI DSS, Server Backups, Terraform, CI/CD Pipelines, Pipelines, Git, Jenkins, Jenkins Pipeline, Bitbucket, Amazon Virtual Private Cloud (VPC), NAT, AWS ALB, Amazon Elastic Container Service (ECS), AWS Auto Scaling, Amazon ElastiCache, Memcached, PostgreSQL, Amazon RDS, Docker, Amazon Elastic Container Registry (ECR), AWS Systems Manager, Amazon CloudFront CDN, Amazon S3 (AWS S3), Amazon Route 53, Amazon CloudWatch, Stellar SDK, Amazon EC2, Blockchain, Agile Software Development, Infrastructure as Code (IaC), AWS Cloud Architecture, Linux Server Administration, Linux Server Configuration, Identity & Access Management (IAM), Bash, Atlassian Suite, Apache, Monit, Nagios, Continuous Integration (CI), Continuous Delivery (CD), Cloud Security, Server Security, Networks, AWS DevOps, DevOps Engineer, DevOps, Network Administration, Ubuntu Linux, SQL, Bash Script, Technical Instruction, Architecture, IT Security, System Administration
DevOps Engineer For Automating Deployments
2022 - 2022
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.
Technologies: DevOps, DevOps Engineer, IT Infrastructure, Automation, Deployment, CI/CD Pipelines, Amazon Web Services (AWS), AWS DevOps, AWS Lambda, Amazon DynamoDB, Amazon S3 (AWS S3), Amazon Elastic Container Service (ECS), Amazon Elastic Container Registry (ECR), Amazon CloudWatch, Terraform, AWS CloudFormation, Amazon CloudFront CDN, Web Application Firewall (WAF), Elastic Load Balancers, DNS, Amazon Route 53, AWS Systems Manager, Amazon API Gateway, AWS Auto Scaling, SSL Certificates, AWS Certificate Manager, AWS IAM, AWS Key Management Service (KMS), Single Sign-on (SSO), Amazon Virtual Private Cloud (VPC), Bitbucket, Docker, Bash, AWS CloudTrail, AWS Control Tower, SonarCloud, Rollbar, SendGrid, Architecture, IT Security, System Administration
CIO (Chief Information Officer)
2016 - 2021
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.
Technologies: CIO, IT Infrastructure, Data Center Infrastructure, Cloud Infrastructure, Hybrid Cloud Infrastructure, Technical Support, Development, Information Systems, Telecom Equipment & Solutions, Networking, IP Networks, Azure, Hardware, Software, Information & Communications Technology (ICT), Voice, Video Conferencing, Data Communication, Applications, Clustering, Cluster, Linux Server Administration, Linux Server Configuration, Bash, Apache, Monit, Nagios, Server Security, Networks
System Administrator and Cloud Architect
2013 - 2021
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.
Technologies: Networking, IP Networks, Linux, Jenkins, Jenkins Pipeline, Email, SMTP, Databases, Web Hosting, DNS, Firewalls, Web Security, Amazon Web Services (AWS), Amazon EC2, Amazon RDS, Amazon S3 (AWS S3), Amazon CloudFront CDN, Amazon Virtual Private Cloud (VPC), Amazon Route 53, Amazon Simple Email Service (SES), Monitoring, Amazon CloudWatch, Optimization, Backups, Elastic Load Balancers, AWS Auto Scaling, Amazon EFS, MySQL, Redis, Ansible, AWS Cloud Architecture, Linux Server Administration, Linux Server Configuration, Identity & Access Management (IAM), Bash, Apache, Slack, Monit, Nagios, Continuous Integration (CI), Continuous Delivery (CD), Cloud Security, Server Security, Networks, AWS DevOps, DevOps Engineer, DevOps, Network Administration, Ubuntu Linux, Technical Instruction
Smart Cities and IoT Consultant
2018 - 2020
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.
Technologies: Key Performance Indicators (KPIs), Smart Cities, Internet of Things (IoT), Machine Learning, 5G, Smart City Technology
Professor of the Graduate Course "ITU and International ICT Organizations"
2017 - 2020
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.
Technologies: ICT Training, Information & Communications Technology (ICT), ISO Standards, ANSI Standards, Technical Standards, University Teaching
Instructor
2001 - 2017
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.
Technologies: LAN, WAN, WLAN, Wireless, Cisco Wireless, TCP/IP, VLANs, VLAN Trunking Protocol (VTP), Dynamic Load Balancing, HSRP, Securities, Firewalls, Network Access Control, VPN, Point-to-Point Tunneling Protocol (PPTP), NAT, SNMP, VoIP, Network Administration, University Teaching, Technical Instruction
Director of Communications and Data Center
2010 - 2016
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.
Technologies: Networking, IP Networks, Video Conferencing, IT Infrastructure, Data Center Infrastructure, VoIP Administration, VoIP, Hosting, WiFi, Wireless, Backups, Virtualization Technology, File Servers, Internetworking, Cisco, Cisco Switches, SAN Switches, Storage, WAN, LAN, LAN Devices, Cisco Routers, Proxy Servers, Linux, Ubuntu Server, Windows Server, SMTP, POP, IMAP, DNS, DHCP, MySQL, VPN, Securities, Firewalls, Security Policies & Procedures, IT Project Management, Linux Server Administration, Linux Server Configuration, Bash, Apache, Monit, Nagios, Server Security, Networks, Network Administration, Ubuntu Linux
Network Administrator
2001 - 2009
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.
Technologies: Web, Linux, Servers, MySQL, MySQL Server, Cisco, Cisco Routers, Cisco Switches, Windows Server, Azure Active Directory, VMware, Hyper-V, IT Infrastructure, Data Center Infrastructure, Storage, Databases, DHCP, DNS, PHP, IP Networks, Networking, Cabling, Securities, Firewalls, Proxies, Squid, NAT, Load Balancers, Fault Tolerance, Troubleshooting, Monitoring, Software, Hardware, Linux Server Administration, Linux Server Configuration, Bash, Apache, Nagios, Server Security, Networks, Network Administration, Ubuntu Linux, SQL, Bash Script, Technical Instruction
Information Analyst, IT Coordinator
2005 - 2007
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.
Technologies: Technical Support, Hardware, Software, Networking, IP Networks, Lotus Notes, VPN, Remote Support, Troubleshooting, Accounts, Video Conferencing, SAP, Websites, Windows Server, Active Directory Programming, Networks, Technical Instruction
Experience
DevOps-automated Cloud Infrastructure Implementation for Mobile Payment Application
https://www.solisystems.com/solimarket/To follow the design principles for operational excellence in the cloud, I deployed the entire new infrastructure as code using Terraform to perform operations as code and manage change in automation. In Agile product development, I promoted the usage of sprints and central Git repositories to make frequent, small, reversible changes. I used serverless architectures and Bitbucket pipelines to go global in minutes and apply Continuous Integration and Continuous Deployment (CI/CD) practices. Automatically configured a staging environment (similar to production) to test the application and anticipate failures. Implemented load balancing, fault-tolerant, autoscaling services to stop guessing capacity and automatically recover from failure. Provided the best cloud solutions to democratize advanced technologies
Datacenter Infrastructure Migration to Cloud
Migrated a co-location center with more than 20 servers and services running in production to AWS without downtime. The process included the cloud infrastructure design, migration, and re-engineering of the 20 services to provide the best cloud solutions and advanced technologies.
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.
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
Completed and sustained the Payment Card Industry Data Security Standard (PCI DSS) report on compliance (RoC) of an ATM network for a US-based client for five years in a row. This job involved controlling and reporting changes to the requirements from version to version and applying modifications to fulfill those that did not comply or were new.
Education
2015 - 2015
Master of Arts Degree in Business Administration (MBA)
Universidad Nacional del Litoral - Santa Fe, Argentina
2005 - 2005
Master's Degree in Enterprise Networks and Systems Integration
Universitat Politecnica de Valencia (UPV) - Valencia, Spain
1996 - 2001
Engineer's Degree in System Engineering
Universidad Tecnológica Nacional - Santa Fe, Argentina
Certifications
OCTOBER 2010 - OCTOBER 2012
Cisco Certified Network Professional (CCNP)
Cisco
FEBRUARY 2010 - FEBRUARY 2012
Cisco Certified Network Associate
Cisco
DECEMBER 1999 - PRESENT
Certificate in Advanced English
Cambridge Assessment English
Skills
Libraries/APIs
Jenkins Pipeline, Rollbar
Tools
VPN, Cluster, Wireshark, ACL, Hyper-V, Amazon CloudFront CDN, Amazon Virtual Private Cloud (VPC), Amazon Simple Email Service (SES), Amazon Elastic Container Service (ECS), Amazon Elastic Container Registry (ECR), AWS Systems Manager, Amazon CloudWatch, AWS IAM, Terraform, Git, Bitbucket, VMware, Squid, Stellar SDK, Atlassian Suite, Apache, Slack, Monit, Nagios, NGINX, Jenkins, Amazon ElastiCache, Ansible, Lotus Notes, AWS CloudFormation, AWS Key Management Service (KMS), AWS CloudTrail, SonarCloud, SendGrid
Languages
SQL, Bash Script, Bash, PHP
Paradigms
Hosting, Agile Software Development, DevOps, Continuous Integration (CI), Continuous Delivery (CD), Software-defined Networking (SDN), Automation
Platforms
Linux, Windows Server, Amazon Web Services (AWS), Ubuntu Linux, Amazon EC2, AWS ALB, Azure, Blockchain, Web, Docker, AWS Lambda
Storage
Data Centers, MySQL, MySQL Server, Amazon S3 (AWS S3), Databases, PostgreSQL, Azure Active Directory, Database Security, Memcached, MongoDB, Redis, Amazon EFS, Amazon DynamoDB
Frameworks
Locust
Other
Cisco, Networking, IT Systems Engineering, Cloud, Systems Engineering, Firewalls, 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 Technology, Internetworking, Ubuntu Server, POP, IMAP, Servers, Fault Tolerance, Amazon Route 53, Amazon RDS, Elastic Load Balancers, AWS Auto Scaling, Web Security, WLAN, VLAN Trunking Protocol (VTP), Dynamic Load Balancing, HSRP, Network Access Control, Linux Server Configuration, Linux Server Administration, AWS Cloud Architecture, 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 Engineer, VoIP, University Teaching, Technical Instruction, Key Performance Indicators (KPIs), Internet of Things (IoT), Smart City Technology, CIO, Hardware, Software, Voice, Video Conferencing, Clustering, VoIP Administration, WiFi, Backups, File Servers, Proxy Servers, Security Policies & Procedures, 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, Development, Applications, Cabling, Web Hosting, Remote Support, Accounts, SAP, Websites, Active Directory Programming, Deployment, Web Application Firewall (WAF), Amazon API Gateway, SSL Certificates, AWS Certificate Manager, Single Sign-on (SSO), AWS Control Tower, ISO Compliance
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