Zero-Trust On-Premise AI & Retrieval Architecture
🛡️ Sovereign Data Engineering & Retrieval
Enterprise Architecture & Pilot Framework

Sovereign On-Premise AI & Data Engineering

Air-gapped document intelligence and high-throughput data engineering for regulated practices and high-stakes operations. Transform voluminous, uncurated archives—scanned faxes, multi-column PDFs, depositions, medical records, and complex transaction ledgers—into sub-second queryable intelligence with 100% data sovereignty, deterministic page-and-line evidence grounding, and zero third-party API leakage.

100%
Air-Gapped Sovereign
Zero external API egress
Sub-50ms
Hybrid Retrieval
BM25 + pgvector HNSW
Evidence
Page & Line Grounded
Bounding-box verification
Zero
Vendor Lock-In
Postgres · vLLM · Day-1 Code
30-Day
De-Risked Pilot
Empirical gating milestones
⚡ De-Risked Evaluation Track
Ready for a Scoped Paid Pilot: Begin with a 48-Hour Synthetic Benchmark (zero client data required) followed by a 30-Day Air-Gapped Closed-Matter Pilot on a single GPU workstation before deploying enterprise cluster hardware or committing CapEx.
Explore Pilot Blueprint →
The Architectural Imperative

Why Sovereign Systems Win in High-Stakes Operations

Replacing public cloud security friction with deterministic, air-gapped data sovereignty.

⚠️ The Public Cloud Trap

Why Commercial Cloud APIs Fail Regulated Enterprises

  • Subprocessor Chains & Data Sprawl: Commercial AI endpoints transmit sensitive discovery files, clinical records, and financial ledgers across opaque multi-tenant subprocessor networks—creating compounding breach exposure, compliance friction, and discovery subpoena risks.
  • Metered Token Economics on Archive Corpora: Ingesting 50,000 pages of discovery records, 500-page deposition transcripts, or multi-year payroll files incurs compounding per-token costs and throttling rate limits that make exhaustive batch analysis economically punitive.
  • Supervisory Burden & Hallucination Liability: In litigation and audited finance, leaders bear a non-delegable duty of independent verification (e.g. CCP § 128.7 sanctions, CRPC 1.1/5.3, SOX internal controls). Cloud chat interfaces lack coordinate-level evidentiary grounding, forcing operators to manually fact-check plausibly hallucinated outputs.
  • Vendor Lock-in & Shifting Model Weights: Cloud providers routinely deprecate model versions, alter system prompts, and modify telemetry policies without warning, breaking production workflows and compromising repeatable legal work-product.
🛡️ The Sovereign Evidentiary Workbench

What We Build Inside Your Physical or Private Perimeter

  • Zero-Egress Physical Sovereignty: 100% of OCR parsing, vector embeddings, relational indexing, and LLM reasoning execute strictly on dedicated bare-metal hardware inside your facility. Zero case data leaves your walls—eliminating subprocessor chains entirely.
  • Fixed-Cost Uncapped Batch Processing: Ingest 30 years of firm archives, execute exhaustive cross-document depositions, and run multi-gigabyte audit reconciliations with zero recurring per-token fees or vendor API quotas.
  • Deterministic Page-and-Line Grounding: Every extracted fact, chronological timeline entry, and damage calculation is tied to page-and-line coordinates with split-screen PDF verification—giving operators instant evidentiary validation under the strictest compliance standards.
  • Complete Code Ownership & Portability: Built on industry-standard open-source primitives (PostgreSQL, pgvector, vLLM, Docker). 100% of schemas, scripts, and runbooks are committed directly to your private Git repository on Day 1.
⚙️
Architectural Flexibility: Tailored to Your Infrastructure Mandate
You are never locked into a single topology. We architect both 100% sovereign air-gapped clusters and zero-hardware encrypted hybrid stacks.
🏢 Track A: 100% Sovereign Bare-Metal
For zero-cloud-egress purists: Active-cooled GPU workstation or rack chassis running local vLLM, PostgreSQL 16 + pgvector inside your office or secure server room. Zero third-party subprocessor risk, zero token metering on millions of pages, and complete physical custody.
☁️ Track B: Encrypted Cloud Gateway
For zero-hardware agility: Managed PostgreSQL 16 with client-side AES-256 encryption and automated PII scrubbing, paired with enterprise zero-data-retention endpoints (e.g. Anthropic BAA / OpenRouter Zero-Retention) for frontier model access with $0 hardware CapEx.
🔄 Track C: Encrypted Hybrid Architecture
High-volume local + frontier reasoning: Run continuous OCR indexing, Bates search, and medical chronology extraction on an inexpensive local workstation, while selectively routing complex, de-identified analytical tasks to cloud frontier models on demand.
⚖️ Invariant Evidentiary Foundation
Regardless of compute location, the core platform remains constant: relational PostgreSQL 16 case isolation, layout-aware OCR, deterministic page/line citation tracking, and split-screen review under rigorous evidentiary standards.

High-Stakes Operational Acceleration

Litigation & Law Firms

Discovery & Deposition Cross-Check

Instantly ingest multi-volume medical records, police reports, and deposition transcripts. Synthesize chronological injury timelines, treatment gaps, and wage-hour calculations linked to exact exhibit pages for high-impact trial briefs and settlement demands.

Deposition Indexing Bates-Number Search CCP § 128.7 Grounding
Finance & Audit

Ledger Reconciliation & Regulatory Diligence

Analyze thousands of raw transaction logs, multi-year payroll files, and scanned vendor invoices. Detect anomalies, compute PAGA/wage penalties, and cross-reference disputed line items against accounting standards with deterministic mathematical rigor.

Audit Trail Verification Contract Covenant Matching SOX / FINRA Traceability
Healthcare & Clinical

PHI Records & Diagnostic Synthesis

Rapidly parse complex Agreed/Qualified Medical Evaluator reports, EHR histories, and radiology summaries. Extract impairment ratings, apportionment breakdowns, and treatment plans while maintaining 100% on-premise HIPAA custody.

Zero-Cloud PHI Custody Diagnostic Summaries Medical Lien Reconciliation
📐 End-to-End Sovereign Retrieval & Extraction Pipeline

How raw, uncurated documents travel from disk to verified intelligence without a single byte escaping the local network:

STAGE 01
Ingest & OCR Normalization
Surya / Tesseract layout-aware OCR handles skewed faxes, multi-column PDFs, and low-DPI scans. Retains exact page and pixel bounding boxes.
STAGE 02
Structured Chunking & Bates Tagging
Hierarchical section-aware chunking preserving tables, Bates stamps, witness designations, and exhibit markers into relational Postgres tables.
STAGE 03
Hybrid Retrieval (BM25 + Vector)
Sub-50ms hybrid search: BM25 exact-token matching (names, dollar amounts, dates) combined with dense HNSW pgvector semantic search via RRF.
STAGE 04
Sovereign LLM Synthesis & Grounding
Local vLLM inference generates structured summaries, chronologies, or legal drafts with mandatory page-and-line citation tags.
STAGE 05
Split-Screen Evidentiary Verification
Operators review generated synthesis side-by-side with original document viewer. Clicking any citation jumps directly to the highlighted bounding box.
Physical Hardware (Air-Gapped Workstation / Cluster)
PostgreSQL 16 + pgvector Local vLLM (Qwen 2.5 / Llama 3.3) LAN Web Portal (mTLS / WireGuard)

⚡ Hardware Realities: Sizing for Concurrent Enterprise Teams

Serving 20 to 100+ concurrent attorneys, paralegals, and analysts requires honest physical engineering: managing thermals, acoustic limits, and VRAM contention between live interactive queries and heavy batch archive ingestion:

Component Workstation Pilot (1 GPU) Production Rack (2-4 GPUs) Engineering Justification
GPU VRAM 1× RTX 4090 24GB or RTX 6000 Ada 48GB 2× or 4× RTX 6000 Ada (96GB–192GB VRAM) Enables concurrent serving of 32k context windows without KV cache swapping or token throttling.
Acoustic / Thermal Blower active-cooled (<42 dB whisper) Dedicated sound-dampened 12U rack or server room Permits placement directly in office copy/server closet without disturbing staff.
Throughput (Tokens/s) 65–90 tok/s (single stream) 280–450 tok/s (vLLM continuous batching) Comfortably supports 40–60 simultaneous active search queries and real-time document drafting.
Batch OCR Indexing ~1,500 pages/hour ~8,000–12,000 pages/hour Clears a 20,000-page complex case file overnight with full table layout reconstruction.
🤝
The Four Non-Negotiable Sovereign Covenants
Enterprise standards guaranteed in every engagement agreement:
📂 1. Day-1 Code & Schema Ownership
All code, PostgreSQL DDL schemas, vector pipelines, and runbooks belong exclusively to your organization from Day 1 in your private Git repository. Zero proprietary licensing, zero telemetry tracking, and zero vendor lock-in.
🔒 2. Absolute Air-Gapped Verification
Your internal IT or security auditor can pull the WAN Ethernet cable at any time; the entire search, OCR, chronology, and drafting engine will continue executing with 100% functionality on bare metal.
⏱️ 3. Sub-Second Hybrid Query SLAs
Sub-50ms hybrid retrieval across 500,000+ indexed pages. Instant keyword lookup + semantic concept matching without waiting for external API network roundtrips.
🛡️ 4. Deterministic Citation Grounding
Every AI claim is anchored to exact source document coordinates with split-screen verification. Plausible ungrounded hallucinations are caught by automated post-generation guardrails.
Demonstrated Engineering

Production Systems & Technical Execution

Live, verifiable architectures developed and operated by Kevin Ruschman.

Core Infrastructure v0.1 Preview

Krusch Coding Harness & 2PC Commit Manager

Deterministic, sandbox-gated state engine preventing AI coding agents from corrupting production codebases.

  • PostgreSQL Operating Plane: Relational state tracking for multi-agent tool execution, planning DAGs, and rollback logs with zero unvetted disk writes.
  • AST & Diff Gate: Side-by-side AST impact analysis and color-coded diff verification via @pierre/diffs before disk application.
  • Atomic 2PC Fsync: Under 32ms atomic two-phase commit manager. Changes are only committed to disk upon verified test passes and explicit approval.
Context & Memory 71★ · v1.2 Ready

Krusch Context MCP (Model Context Protocol)

Unified 16-tool MCP server delivering persistent episodic memory and semantic code navigation.

  • Multi-Layer Memory Architecture: Epistemic confidence tracking, temporal decay, and proactive memory compaction across long sessions.
  • AST Code Intelligence: Full-repository symbol graph traversal and dependency tracing without blowing LLM context budgets.
  • Local Vector Indexing: Embedded sqlite-vec semantic search providing sub-5ms retrieval for coding agents and retrieval pipelines.
Inference Routing v0.1 Preview

Krusch Cascade Router

Multi-tier hierarchical routing engine slashing inference latency and token burn to zero on deterministic paths.

  • Sub-15µs CPU Stage-0 Gate: Intercepts exact matches, code fences, SQL statements, and syntax errors in microseconds with $0.00 routing tax.
  • Sub-50ms Centroid Semantic Classifier: Lightweight embedding projections classify query complexity and route to local vs. frontier models.
  • Zero-Overhead Policy: Eliminates bloated LLM-eval-LLM gateway patterns that cost 400ms+ and burn millions of tokens per month.
Retrieval & RAG Production

Enterprise Vector RAG & Batch Embeddings

High-throughput document ingestion and hybrid retrieval architecture handling dense specialized corpora.

  • Hybrid Reciprocal Rank Fusion: Blends BM25 keyword matching with pgvector HNSW cosine similarity for 99%+ recall on specialized terminology.
  • Dimension & Index Optimization: Solved pgvector HNSW 2000-dim limits and query latency bottlenecks across 500,000+ vector records.
  • Tamper-Evident Audit Trails: Every query, chunk retrieval, and relevance score is logged with cryptographic hashes for complete traceability.
Infrastructure & SRE Live Production

Bare-Metal Homelab & Cluster Fleet Operations

Real-world physical hardware engineering: thermal dissipation, storage reclamation, and reliable air-gapped container orchestration.

Fleet Topology
Multi-node Linux server cluster (Ubuntu Server 24.04, Docker, WireGuard private mesh, Caddy reverse proxy with mTLS).
Thermal & Undervolt
Custom undervolt profiles and acoustic dampening (<45 dB) maintaining high GPU utilization under sustained batch inference.
Tiered Backups
Automated 3-2-1 backup rotation for PostgreSQL databases, vector stores, and configuration state with zero data loss.
De-Risked Implementation

The 30-Day Air-Gapped Pilot & 90-Day Production Roadmap

A phased, empirical evaluation framework before committing $1 of cluster CapEx or full-time headcount.

PHASE 0 · DAYS 1–2

48-Hour Synthetic Benchmark (Zero Client Data)

Validate pipeline throughput, OCR precision, and coordinate grounding without touching a single byte of your proprietary files.

Key Deliverables:
  • Synthetic dirty-document stress test: 200 pages of degraded multi-column scans, skewed faxes, and complex tables.
  • Empirical OCR accuracy report (bounding box fidelity ≥ 98.5%).
  • Demonstration of split-screen citation viewer and sub-50ms hybrid retrieval.
PHASE 1 · DAYS 3–30

30-Day Air-Gapped Closed-Matter Pilot

Deploy a single dedicated GPU workstation inside your secure physical perimeter to process 3–5 closed case or audit files.

5 Empirical Gating Milestones:
  • Gate 1 (OCR Confidence): ≥98.5% word-accuracy on degraded historical faxes and scanned documents.
  • Gate 2 (Math & Audit Precision): 100% deterministic accuracy on payroll, damage, or ledger calculations.
  • Gate 3 (Latency SLA): Sub-1.5s query response on 20,000+ page matter archives.
  • Gate 4 (Grounding Guardrail): Zero unanchored claims permitted without direct page-and-line evidence tags.
  • Gate 5 (Day-1 Code Delivery): Full Git repository, PostgreSQL schemas, and Docker configs transferred to your team.
PHASE 2 · DAYS 31–90

Production Scaling & Firm-Wide Integration

Scale the validated architecture to multi-GPU enterprise rack hardware, wire internal authentication, and onboard practice teams.

Production Milestones:
  • Hardware commissioning: 2× or 4× RTX 6000 Ada in sound-dampened server chassis with dedicated circuit validation.
  • Single Sign-On (SSO) and Active Directory / LDAP role-based access control (RBAC) integration.
  • Automated nightly discovery ingestion daemon and continuous backup synchronization.
  • Comprehensive staff training runbooks and operator documentation for IT/MSP handoff.

🖥️ Hardware Investment Tiers

Three calibrated hardware tiers tailored to team size, matter volume, and infrastructure strategy:

Tier Hardware Specifications Target Capacity Est. Hardware CapEx
Tier 1: Pilot Workstation 1× RTX 4090 24GB or RTX 6000 Ada 48GB, 64GB DDR5 RAM, 4TB Gen4 NVMe, Quiet Chassis (<42 dB) Pilot team (3–5 users), ~25,000 pages active archive $3,800 – $7,500 (one-time)
Tier 2: Enterprise Production 2× to 4× RTX 6000 Ada (96GB–192GB VRAM), 256GB ECC RAM, 16TB NVMe RAID-10, Dual 1600W Redundant PSU Firm-wide (30–80 concurrent users), 500,000+ pages archive $18,000 – $32,000 (one-time)
Tier 3: Encrypted Hybrid Gateway Existing server / mini-PC for local AES-256 encryption & OCR, routing to Zero-Retention Cloud BAA endpoints Distributed remote teams, burstable reasoning workloads $0 – $1,200 hardware (usage billing)
Technical Pipeline

High-Throughput Data Engineering & Sovereign Retrieval

The mechanics of transforming messy unstructured archives into deterministic intelligence.

📑 Ingestion & Layout-Aware OCR

Solving Real-World Document Noise

Enterprise archives are filled with messy 200 DPI faxes, misaligned scans, multi-column layouts, and complex financial tables that break generic PDF extractors.

  • Layout Analysis: Detects reading order across multiple columns, separating running headers, footers, and Bates stamps from substantive body text.
  • Table Boundary Reconstruction: Rebuilds tabular accounting structures into lossless Markdown and relational SQL rows, preserving column alignment for mathematical calculations.
  • Coordinate Retention: Every extracted word retains its normalized (page, x0, y0, x1, y1) bounding-box coordinates for instant split-screen visual verification.
🔍 Hybrid Retrieval Mechanics

BM25 + pgvector HNSW Fusion

Pure semantic vector search frequently misses exact names, Bates numbers, and dollar figures. Our hybrid retrieval architecture solves this completely:

  • Sparse BM25 Indexing: Executes PostgreSQL tsvector queries with customized legal/financial dictionaries to nail exact keywords, dates, and statute citations.
  • Dense HNSW pgvector: Traverses high-dimensional semantic spaces (e.g. bge-large-en-v1.5) to surface conceptual matches even when exact keywords differ.
  • Reciprocal Rank Fusion (RRF): Merges sparse and dense ranking lists with calibrated constant weights, followed by an optional cross-encoder reranker for top-5 precision.
💻 Relational Schema Isolation & Coordinate Tracking

How document chunks, coordinate bounding boxes, and embeddings are stored inside PostgreSQL for instant verifiable auditability:

-- Sovereign Evidentiary Chunk & Bounding Box Schema
CREATE TABLE matter_document_chunks (
    chunk_id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    matter_id UUID NOT NULL REFERENCES matters(id) ON DELETE CASCADE,
    document_id UUID NOT NULL REFERENCES matter_documents(id),
    page_number INT NOT NULL,
    line_start INT,
    line_end INT,
    bates_number VARCHAR(64),
    bounding_box JSONB NOT NULL, -- {"x0": 72.4, "y0": 118.2, "x1": 540.1, "y1": 134.8}
    content_text TEXT NOT NULL,
    embedding VECTOR(1024),      -- Local HNSW indexed vector
    tsv_content TSVECTOR GENERATED ALWAYS AS (to_tsvector('english', content_text)) STORED,
    created_at TIMESTAMPTZ DEFAULT clock_timestamp()
);

-- Compound HNSW & Full-Text GIN Indexes
CREATE INDEX idx_chunks_embedding ON matter_document_chunks USING hnsw (embedding vector_cosine_ops);
CREATE INDEX idx_chunks_tsv ON matter_document_chunks USING gin (tsv_content);

📊 Empirical Performance Benchmarks

<50ms
Hybrid Query Latency
500k chunks search
500+
Pages / Minute
Batch local OCR
<2.5s
End-to-End Synthesis
Local Qwen 2.5 32B
<15 MB
Storage / 1,000 Pages
Postgres + Vectors
Executive Briefing

Engagement Models & Architectural Leadership

Direct collaboration with Senior AI Systems & Data Engineer Kevin Ruschman.

Kevin Ruschman
Senior AI Systems Engineer · Data & Retrieval Architect
Direct Contact: [email protected] · GitHub: @kruschdev

In high-stakes, regulated environments—whether litigation trial practices, audited financial services, or clinical healthcare—the true bottleneck of artificial intelligence is not model parameter size. It is data engineering, retrieval fidelity, and physical custody.

When an organization processes sensitive medical chronologies, proprietary discovery archives, or confidential transaction records, relying on multi-tenant cloud APIs introduces severe subprocessor chains, uncontrolled third-party breach risks, and escalating per-token costs. Worse, commercial chat interfaces produce plausible hallucinations that violate supervisory standards and evidence rules.

My engineering practice is built on a single conviction: enterprises must own their intelligence. That means air-gapped bare-metal or client-side encrypted hybrid architectures where not a single byte of confidential data leaves your perimeter; where every extracted fact is grounded to exact page-and-line coordinates with split-screen verification; and where 100% of the code, schemas, and pipelines are committed to your private Git repository under standard open-source tools with zero vendor lock-in.

Whether your organization is seeking an independent architectural evaluation, a de-risked 30-day closed-matter pilot, or a full turnkey on-premise AI deployment, I invite you to explore our structured engagement models below.

Flexible Engagement Pathways

Track 1

Architectural Advisory & Diligence

Comprehensive technical review of your existing data infrastructure, cloud egress exposure, hardware procurement specifications, and AI compliance posture.

Security Audit Hardware Sizing Vendor RFP Review
Track 2 (Recommended)

30-Day Scoped Air-Gapped Pilot

Turnkey execution of the 48-Hour Synthetic Benchmark followed by a 30-day air-gapped closed-matter pilot on a dedicated workstation, delivering all 5 empirical gating milestones.

Workstation Setup 5 Gating Milestones Full Code Transfer
Track 3

Fractional AI Systems Lead / Full Turnkey

End-to-end multi-GPU cluster commissioning, custom OCR/vector pipeline development, enterprise SSO/LDAP integration, and long-term SRE maintenance runbooks.

Cluster Deployment Private LAN Portal MSP Staff Training
ENCRYPTED TRANSMISSION PORTAL · KRUSCH.DEV API
🔒 Directly dispatched to Kevin Ruschman's private database & notification queue.
Ready for Empirical Evaluation

De-Risk Your AI Strategy With an Air-Gapped 30-Day Pilot

Zero cloud data leakage, zero CapEx hardware commitments, and zero vendor lock-in. Evaluate the 5 empirical gating milestones inside your own physical perimeter before committing to cluster hardware.

🔒 Request Scoped Evaluation Pilot