Cloud & Network Engineering
Aaron Mathias.
Cloud/Network Engineering professional with 3+ years managing mission-critical infrastructure at scale — configuring TCP/IP networks, enforcing IAM security, and maintaining >98% uptime across 3,500 endpoints in a production financial environment.
0+
Years experience
>0%
Uptime maintained
0
Endpoints managed
$0M+
Annual savings
About
Cloud & network engineering, with an operational mindset.
Results-driven Cloud/Network Engineering professional with 3+ years managing mission-critical infrastructure at scale. Proven ability to configure and troubleshoot TCP/IP networks, enforce IAM security policies, and maintain >98% uptime across 3,500 endpoints in a production financial environment.
Hands-on AWS experience spanning EC2, S3, IAM, VPC, Security Groups, and the AWS CLI — with $1M+ delivered in annualized cost savings through infrastructure optimization. Currently completing a B.S. in Cloud and Network Engineering (AWS) at WGU, expected Dec 2028; CompTIA A+, CompTIA Network+, and AWS Cloud Practitioner certified, with Microsoft AZ-104 in progress.
Work
Projects.
A selection of cloud and infrastructure work, including a production Python networking tool, AWS labs, IAM security practice, and this portfolio build.
Featured
Python Subnet Calculator CLI
A command-line tool that takes any IP address and subnet mask and instantly calculates network address, broadcast address, usable host range, and total host count. Includes a binary breakdown of the subnet mask, VLSM support, and structured JSON output for piping into other scripts.
AWS Cloud Resume Challenge
In progressBuilding a 3-tier VPC architecture — public/private subnets, NAT gateway, security groups, and NACLs — hosting a static site via S3 and Route 53, with least-privilege IAM policies and CloudWatch monitoring.
Other Work
CloudWatch Monitoring Lab
Infrastructure monitoring practice using Amazon CloudWatch to capture metrics, alarms, and operational visibility for AWS resources.
IAM Security Lab
AWS identity and access management practice covering IAM users, roles, policies, JSON policy structure, and least-privilege access design.
Network Automation Scripts
Reusable Python and Bash scripts for configuring switches, validating routes, and automating repetitive network operations tasks.
Terraform Infrastructure
Modular Terraform configurations provisioning repeatable AWS environments — VPCs, IAM, and compute — with remote state and plan/apply pipelines.
Experience
Where I've worked.
Three years managing mission-critical ATM infrastructure at one of Canada's largest banks — owning uptime, vendor SLAs, and nationwide refresh coordination.
ATM Technical Support Analyst
Bank of Montreal (BMO)
- Serve as primary remote resolver using structured troubleshooting across 3,500+ endpoints; isolate root causes for software, L1–L3 networking, and hardware faults to maintain 98%+ SLA adherence.
- Manage QA, provisioning, MAC validation, and component diagnostics (motherboards, RAM, PSUs) across the hardware lifecycle.
- Act as technical liaison for field engineers (NCR, Burroughs, Chubb, Securitas), managing a high volume of tickets and coordinating incident response via ServiceNow ITSM.
- Streamlined repair flows and renegotiated vendor SLAs, delivering $1M+ in annualized savings.
- Developed team Excel VBA macros to process daily metric data, accelerating reporting speed and identifying break-fix trends.
- Onboarded 400+ sites with zero rollout cutover downtime and authored SOP documentation for SD-WAN deployments.
- Provide on-call incident response with flexibility to work various shifts, including periodic coverage outside core hours.
- Participate in change management activities, including pre-change planning and post-change testing to validate network and hardware stability.
Customer & Financial Services Representative
Bank of Montreal (BMO)
- Processed high-volume financial transactions with zero end-of-day reconciliation errors over 22 months; maintained full AML/KYC and cybersecurity policy compliance.
- Advised customers on digital banking platforms, reducing branch call volume and driving measurable improvement in digital adoption rates.
Skills & Education
The toolkit.
AWS, networking fundamentals, scripting, and the operational tools that keep production systems running.
AWS & Cloud
Networking
OS / Scripting
Hardware & Tools
Certifications
- CompTIA A+Earned Jun 2026
- CompTIA Network+Earned Jul 2026
- AWS Cloud PractitionerEarned Aug 2026
- Microsoft AZ-104In Progress
Education
Western Governors University
B.S. Cloud and Network Engineering - AWS
Mar 2026 – Expected Dec 2028 · Remote
Contact
Let's build something reliable.
Open to cloud, infrastructure, and production support roles — both local and abroad. Drop a line and I'll get back within a day or two.
amat576@wgu.edu
Based in
Toronto, ON· Open abroad & local