Sreeram K R | Resume

Professional Summary

Network engineer with hands-on L2/L3 operations across a 1,000+ system, 70-subnet estate: L3-to-L2 migrations, VLAN trunking, AD DNS and firewall drop-log RCA in Splunk. Automates network work in Python (Netmiko, NetworkX, SQLite): built and led a 4-site switch survey of 2,000+ network devices, parsing multi-vendor CLI and cutting a 4-month manual baseline to under 2. Held 24/7 solo L1/L2 coverage for 3 months at 100% first-contact resolution.

Professional Experience

Infrastructure Engineer Jan 2025 – Present (LWD 25 Sept 2026)

Iron Systems (Client: Honeywell) Pune / Bangalore, India

Executed zero-downtime L3-to-L2 migrations across 70 subnets (VLAN/trunking, AD DNS forwarders) and root-caused blocked ports/URLs from Splunk firewall drop logs to restore lab connectivity.
Built a Python network-audit suite and led a survey of 4 sites and 2,000+ network devices, parsing multi-vendor CLI into a validated schema and cutting the 4-month manual baseline to under 2 months.
Reconstructed L2 topology from partial discovery data: switch roles from graph centrality, uplinks from shared MAC tables, LLDP/CDP neighbour de-duplication, segment-ID propagation from the Floor Access Switch.
Loaded survey data into a 16-table SQLite warehouse driving inventory, vendor, port-capacity and unassigned-network reports; reclaimed 500+ unused IPs.
Held 100% first-contact resolution with zero escalations as sole overnight L1/L2 engineer for 3 consecutive months, owning the full incident queue.
Achieved 98% compliance and eliminated drift across 1,000+ servers by automating patching and config baselines (Ansible, Chef, Tanium, PowerShell).
Accelerated endpoint deployment by 80% by refactoring a 3,000-line manual workflow into zero-prompt PowerShell automation (hardware hash, Intune/Autopilot).
Slashed ServiceNow privileged-account provisioning by 95% (5 min to under 20 s) over REST APIs and remote PowerShell (WMI/WinRM).

Technical Skills

Networking & Routing/Switching: L2/L3 switching and routing, VLAN trunking, subnetting, IP management and reclaim, AD DNS, TCP/IP, CDP/LLDP discovery, Wireshark, multi-vendor CLI (Cisco IOS, HP, D-Link, Huawei, Aruba).
Network Automation: Python (Netmiko, NetworkX, Pandas, Pydantic, SQLite, Graphviz), PowerShell (WMI/WinRM), Bash, Ansible, Chef, Terraform, GitHub Actions CI/CD.
Observability & ITSM: Splunk (firewall drop analysis, RCA), ServiceNow REST APIs, Tanium Deploy, Active Directory, Intune/Autopilot.
Systems & Cloud: Ubuntu Linux administration, bare-metal provisioning (Dell Image Assist), systemd, Windows Server, Docker, Nginx, GCP, Oracle Cloud, Cloudflare Zero Trust Tunnels.

Technical Projects

Network Survey Automation — Field-to-Report Toolkit github.com/roguehunter7/network-survey-automation

Parsed multi-vendor CLI logs through a staged LLM + Pydantic v2 pipeline (14 schema models; MAC tables chunked to 100 rows) over a rate-limit-aware process pool with per-device retry, replacing per-vendor TextFSM/regex; malformed output fails validation, never reaching the database.
Inferred topology from incomplete discovery data with NetworkX (roles by centrality, uplinks by shared-MAC similarity) and rendered ~90 Graphviz diagrams plus uplink JSON; model uncertainty routed to a human review queue.

Zero-Trust Cloud Infrastructure & GitOps Platform sreeramkr.com

State-locked Terraform across GCP and Oracle Cloud (deny-all ingress, IAP-only SSH, $0/month guardrails), keyless GitHub Actions CI/CD (WIF/OIDC), services loopback-bound behind outbound Cloudflare Zero Trust Tunnels.

Education, Certifications & Languages

Bachelor of Technology, Electronics & Communication Engineering 2020 – 2024

Adi Shankara Institute of Engineering & Technology Kochi, India

Certifications: GATE Qualified (Electronics & Communication, 2023). Languages: English (Fluent), Malayalam (Native), Tamil (Native), Hindi (Conversational).