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j-arndt/README.md

Justin Arndt

IT Application & Operations Support · Systems Administration · Change & Incident Management

Lancaster, PA · Open to Remote · justinarndt05@gmail.com · linkedin.com/in/appopspecialist

About

IT support professional with 8+ years keeping business-critical systems running in highly regulated, audit-intensive operations, plus a decade in healthcare IT. I troubleshoot application issues, trace them to the root cause, fix them under change control (ITIL), and write the documentation that keeps systems supportable. I served as a Change Control Coordinator and systems subject-matter expert, and I recently completed an M.S. in Data Analytics that adds a reporting-and-analytics edge for monitoring application health.

I do my best work where accuracy matters and downtime isn't an option — calm under pressure, relentlessly thorough, and quick to learn new systems.

Featured — Application Support Work Sample

An end-to-end case study of how I support a business-critical application: incident triage → log and SQL diagnosis → root-cause analysis → fix under ITIL change control → reusable runbook → monitoring and reporting.

→ View the live work sample

What I do

  • Application support & troubleshooting — incident triage, root-cause analysis, minimizing downtime
  • IT service management (ITIL) — change, incident, and problem management; runbooks and SOPs
  • Systems administration — user access, audit trails, backup / restore / disaster recovery, SQL Server
  • Business analysis — translating user needs into clear technical specifications
  • Reporting & analytics — SQL, dashboards, and trend monitoring to inform decisions

Experience

Computer System Validation Engineer · QC Systems Administrator · Change Control Coordinator Alphanumeric Systems, Inc. (embedded onsite at GSK vaccine manufacturing) — Marietta, PA · Jan 2016 – Apr 2024 Supported ~10 business-critical computerized systems; led root-cause / CAPA investigations and a fleet-wide Windows 7 → Windows 10 migration and revalidation of 10+ systems; authored ~100 technical documents (specs, SOPs, runbooks, change records); coordinated change control across business, IT, and QA.

Imaging Services Technician — Clinical Imaging Systems (PACS / DICOM) Lancaster General Health / Penn Medicine — Lancaster, PA · Apr 2004 – Jun 2014 Supported clinical imaging applications and infrastructure across a multi-site hospital network under HIPAA.

Education & Certifications

  • M.S., Data Analytics & Data Science — Western Governors University (2025)
  • B.S., Cybersecurity & Information Assurance — Western Governors University (2024, NSA-designated Center of Academic Excellence)
  • ITIL Foundation · ISC² SSCP · CompTIA A+, Network+, Security+, CySA+, PenTest+

Tech & Tools

SQL Server · Python · R · PowerShell · Power BI · Windows Server · Git · ITIL · 21 CFR Part 11 / GAMP 5 · HIPAA

Contact: justinarndt05@gmail.com · Lancaster, PA (Open to Remote) · linkedin.com/in/appopspecialist

Pinned Loading

  1. agent-long-term-memory agent-long-term-memory Public

    Local LLM memory that survives VRAM exhaustion. Compresses sessions to 4KB using Bloom filters + Merkle trees, stores to Cloudflare R2, hydrates in <500ms. QLoRA bakes memory overnight.

    Python

  2. agent-resurrection agent-resurrection Public

    SEED_POLY encoding protocol: deterministic agent state compression using Bloom filters, Merkle trees, and DEPA resurrection probes. Drift score to 3 decimal places.

    Python

  3. certified-agentic-firewall certified-agentic-firewall Public

    Production-grade input/output firewall for agentic AI. Cryptographic audit trail on every tool call and model output. 21 CFR Part 11 and SOC 2 aligned.

    Python

  4. certified-phi-egress-firewall certified-phi-egress-firewall Public

    HIPAA-aware AI egress firewall. Detects 18 PHI categories and blocks outbound LLM traffic containing patient data. Sub-50ms latency, full audit log.

    Python

  5. ironclad ironclad Public

    Formal verification sandbox for the IRONCLAD solver featuring Lean 4 algebraic proofs, deterministic verification environments, and cryptographic execution audit logs.

    Lean

  6. miniVectorDB miniVectorDB Public

    An SRAM-optimized, mathematically exact, billion-scale MIPS vector database utilizing Fast Walsh-Hadamard Transforms and FP8 quantization bounds.

    Python