John Ricklefs

Field Engineer|Hardware Delivery & Data Center Deployment

Linux Servers·Hardware & Firmware Diagnostics·Equipment Bring-Up·Field Operations

Hardware deployment and network engineer, NVIDIA-Certified in AI Infrastructure & Operations. Owns equipment configuration, commissioning, and service validation from initial power-on through customer activation, and directs field technicians through hardware failures, cabling faults, and component replacements across production networks.

Email me LinkedIn 📍 Based in Blue Springs, MO
6,000+
Dedicated Linux servers installed
86
Rural city network deployments
5,000+
Carrier maintenance windows completed
<5s
Traffic impact on a two-city live migration

Twenty years in, one deliberate pivot

Twenty years keeping other people's infrastructure running — starting on the data center floor, then two decades in the field on service-provider networks, and now turning back toward the racks themselves.

Infrastructure engineer with 20+ years of hands-on experience spanning data center hardware deployment and large-scale service-provider networks. Managed the installation of 6,000+ dedicated Linux servers early in career, and has since led nationwide network site builds, hardware and firmware troubleshooting, and structured deployment validation for Conexon, T-Mobile, Sprint, and CenturyLink. Skilled in vendor coordination and RMA management, cross-functional field-team leadership, and technical documentation.

Able to quickly learn and adapt new compute technologies. Eager to obtain new professional level certifications quickly in pursuit of company goals. Foundationally passionate about server and network hardware and architecture.

Where I've worked

Jul 2022 –
Present

Network Engineer

Conexon — Kansas City, MO

Owns configuration, hardware checks, and connectivity validation from first power-on through first-customer activation; directs field installation work and advises cooperative operations teams. Drives fast resolution of critical network escalations.

  • Equipment Commissioning — Prepared Calix and Juniper configurations before installation and directed CDFP cabling corrections and faulty-card replacements at substation huts and mobile cabinets, reducing on-site troubleshooting time by 20% during deployments in harsh weather.
  • Network Migration and Cutover — Owned preparation, simultaneous cutover, and validation of two Adtran-to-Calix E9 optical line terminal migrations serving approximately 300 subscribers; executed 700+ configuration lines in 2.5 hours and verified service continuity through live traffic monitoring.
  • Change Execution and Validation — Completed 100+ overnight changes using pre-checks, post-checks, and rollback procedures; at least 98% completed without rollback, with the two reversals caused by vendor issues.
  • Data Center Hardware Maintenance — Led six Juniper MX480 hardware replacement and software upgrade events at Netrality 1102 Grand; completed five within approved windows and managed a vendor-related rollback during the remaining event.
  • Multi-Vendor Systems Support — Independently supports 52 BlueCat servers, 100+ Juniper edge routers, and 500+ Calix OLTs, diagnosing hardware and configuration faults directly and engaging vendors for confirmed software bugs.
  • Fixed Wireless Commissioning — Commissioned approximately 10 initial Tarana 6 GHz base-node and remote-node implementations, checking signal strength, throughput, and latency for deployment validation and FCC testing preparation on BEAD-funded projects; trained two field agents to continue commissioning.
  • Technical Training — Mentored approximately 12 Tier I/Tier II staff to handle routine and overnight tasks independently, reducing direct engineer involvement in the covered work by 20%.
  • Operational Runbooks — Wrote 20+ configuration and troubleshooting procedures for engineers, field agents, and NOC personnel, reducing time needed to learn unfamiliar platforms by 25%.
City deployments: 86Field agents: 10+Electric cooperatives: 20+
Nov 2015 –
Jul 2022

Network Engineer

T-Mobile — Overland Park, KS

Telecommunications operations across an international IP core network. Directed on-site technicians worldwide from corporate headquarters and made diagnostic and recovery decisions across Cisco CRS, GSR 12K, ASR 9K, Juniper MX480/MX960, and Ciena aggregation infrastructure.

  • Overnight Maintenance — Handled 200+ maintenance events in a typical month and up to 10 per night, maintaining sole-operator shift coverage during staffing reductions without major execution errors.
  • Hardware and Fiber Repair — Directed 5,000+ hardware and fiber repair cases, with cumulative hardware replacement costs exceeding $1 billion; isolated fiber faults through segment testing and error counters, then directed cleaning, optic replacement, and component repairs to restore service.
  • Software Upgrades — Performed 100+ upgrades using planned pre-checks, implementation steps, and post-change verification, confirming equipment operation after software changes with infrequent rollbacks.
  • Hardware Replacement and Recovery — Directed replacement of incompatible or dead-on-arrival cards using site spares; kept routers operating on one routing engine overnight when parts were unavailable, completing repairs after delivery.
  • IP and Transport Diagnostics — Distinguished IP faults from transport failures using interface errors, flapping, and fault-onset timing; directed on-site diagnostics and engaged transport teams several times weekly to establish root cause.
  • Vendor Escalations and RMAs — Managed 10–15 vendor cases monthly, primarily return merchandise authorizations, providing diagnostic logs and evidence of failure to support replacement approval and repair coordination.
  • Engineer Training — Trained wireless engineers and managed-services staff to perform maintenance, troubleshooting, and field repair coordination independently; multi-backplane Cisco CRS work remained a specialist responsibility.
Network: 1,000+ core routersField coordination: InternationalShift: Overnights
Jan 2010 –
Nov 2015

Technician II

Sprint — Overland Park, KS
  • Infrastructure Troubleshooting — Investigated server, hardware, PBX, and call-management alarms; coordinated outages and change control across technical departments, configured Juniper MX480 routers for a public safety datalink platform, and maintained troubleshooting procedures.
Jan 2009 –
Jan 2010

Service Assurance

CenturyLink — New Century, KS
  • Incident Triage and Outage Coordination — Assessed server, network, database, call-center, and WILY alarms; created HP OpenView and BlueZone tickets, engaged repair teams by severity, and coordinated outage bridges while troubleshooting VPN, software, and hardware failures.
  • Automated Service Monitoring — Ran and updated iMacros and DéjàClick scripts to check website functionality and identify service failures for investigation.
Dec 2006 –
May 2007

Data Center Technician

1and1 Web Hosting — Lenexa, KS
  • Linux Server Installation and Diagnostics — Managed dedicated hosting server installations, including racking and Linux provisioning; performed BIOS upgrades, RAID controller troubleshooting, and hardware testing to identify failed components for RMA processing.

What I work with

Data Center & Hardware

Server installation Hardware diagnostics BIOS / firmware upgrades RAID diagnostics Equipment configuration RMA coordination Linux NVIDIA AI Infrastructure (NCA-AIIO)

Network Platforms

Juniper MX / ACX / QFX / EX Cisco CRS / ASR / GSR Calix E9 / E7 / ASM Ciena Adtran A10 Fortinet Netgate Tarana Ubiquiti

Operations & Tooling

Change control Network triage Fiber troubleshooting Operational runbooks BlueCat StarTech ESXi Proxmox EVE-NG

Field & Team Leadership

Field technician direction Cutover execution Vendor escalations Tier I/II mentoring Technical documentation

Education & certifications

Education

Metropolitan Community College — Kansas City, MO
AAS, Computer Science & Information Systems · 2006–2008
CCNP and Network Security coursework.
Summit Technology Academy — Lee's Summit, MO
2004–2006
Superintendent's Honors Scholarship; top of class; five technical certifications earned during attendance.

Certifications

  • NVIDIA-Certified Associate: AI Infrastructure & Operations (NCA-AIIO)Held
  • NVIDIA-Certified Professional: AI Infrastructure (NCP-AII)In progress · 2027
  • CompTIA Linux+Held
  • CompTIA Server+Held
  • JNCIA — Juniper Networks Certified AssociateHeld
  • CCNA — Cisco Certified Network AssociateHeld
  • CompTIA Network+Held
  • CompTIA A+Held
  • CompTIA i-Net+Held

Let's talk infrastructure

Open to field engineering, hardware delivery, and data center deployment roles. Based in Blue Springs, MO — available for nationwide travel and site work.