Senior Network Engineer

Hitachi Mobility Multimodal Solutions; São Paulo; On-site; BRL 180,000 - 240,000; Full time

Job summary

Hitachi Mobility Multimodal Solutions (HMMS) is seeking a Senior Network Engineer to design, implement, and sustain enterprise network and cloud infrastructure in Brazil.

Responsibilities include Azure networking, FortiGate and Cisco firewalls, Terraform IaC, and hybrid connectivity. You will provide Tier 3 support and drive infrastructure projects to ensure uptime and security.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or equivalent experience.
• 5+ years of network engineering experience.
• Proven experience in Azure networking and hybrid infrastructure.

Responsibilities

• Design, configure, and manage enterprise network and cloud infrastructure.
• Provide technical leadership across network engineering initiatives.
• Lead and deliver infrastructure projects on time and within scope.

Skills

Azure networking

Hybrid cloud design

Terraform

PowerShell

Grafana

AZ-700

FortiGate

Cisco routing/switching

DNS/TCP/IP

Education

Bachelor’s degree in Computer Science or IT

Tools

Azure

PfSense

FortiGate

Job description

As THE leader in transit technology, Hitachi Mobility Multimodal Solutions (HMMS - formerly known as Clever Devices) vision is to make meaningful contributions to worldwide mobility. Our goal is to be the leading provider of exciting technology that improves the quality of mobility in communities around the world. We are continuing to grow, and are looking for a Senior Network Engineer join our team.

The Senior Network Engineer Lead is responsible for designing, implementing, and maintaining enterprise network and cloud infrastructure to ensure secure, scalable, and highly available connectivity. This role provides technical leadership across network engineering initiatives, with a strong emphasis on Microsoft Azure networking, hybrid connectivity, security, and Infrastructure as Code (IaC).

Key Responsibilities

• Technical Leadership: Provide technical direction, mentorship, and oversight to network engineering initiatives and team members.

Network & Security Engineering

• Design, configure, and manage FortiGate, pfSense, and Cisco firewalls
• Implement VPNs, security appliances, and secure access solutions
• Ensure adherence to enterprise security standards
• Design and manage Azure networking (VNet, DNS, NSGs, VPN Gateway)
• Implement and support Azure ExpressRoute for hybrid connectivity
• Enforce Azure network security and governance controls
• Develop and manage infrastructure using Terraform
• Automate provisioning, scaling, and configuration of network resources
• Design and maintain complex LAN/WAN environments
• Configure switching, routing, and high-availability solutions
• Design secure and scalable wireless environments
• Support voice, video, and enterprise mobility solutions
• Support multi-site infrastructure across on-prem and cloud
• Perform system upgrades, patching, and maintenance
• Implement monitoring solutions (Grafana and related tools)
• Analyze performance and proactively resolve issues
• Provide Tier 3 escalation support, including end-user and desktop troubleshooting
• Collaborate with internal teams and external vendors
• Support systems and servers associated with network services
• Ensure uptime and service reliability
• Diagnose and resolve complex network and infrastructure issues
• Perform root cause analysis
• Maintain network diagrams, configurations, and SOPs
• Ensure audit readiness and compliance standards
• Lead and deliver infrastructure projects on time and within scope
• Deploy Sign technologies
• Support real-time location system infrastructure

Core Skills & Qualifications (ATS Keywords)

• Azure network security and hybrid cloud design
• AZ-700 Certification (required or preferred)

Network & Security Technologies

• FortiGate firewall administration (advanced)
• Cisco routing & switching (LAN/WAN)

Infrastructure & Automation

• Terraform / Infrastructure as Code (IaC)
• Automation of provisioning and configuration
• Scripting (PowerShell / Windows scripting)

Monitoring & Tools

• Network performance tuning and observability tools

Core Networking Knowledge

• DNS, TCP/IP, BGP, routing protocols
• HTTP/S, email routing, network security fundamentals

End-User & Support Experience

• Desktop and end-user support
• Hardware/software troubleshooting
• Incident and escalation management

Professional Skills

• Cross-functional collaboration
• Time management and project delivery
• Documentation and process standardization

Requirements

• Education: Bachelor’s degree in Computer Science, Information Technology, or equivalent experience
• 5+ years of network engineering experience
• Proven experience in Azure networking and hybrid infrastructure

HMMS, (Hitachi Rail CD U.S. Ltd.) is an Aff…