Shota M.

Specializing in Public Datasets & Zero-PHI Architectures (HIPAA-Exempt by Design) I do not handle private patient records (PHI) or unmasked PII. All pipelines process public, de-identified, or synthetic datasets. I eliminate high cloud warehouse bills (Snowflake, BigQuery, AWS) by running multi-gigabyte and terabyte-scale batch workloads on dedicated bare-metal infrastructure (128GB ECC RAM) using deterministic, zero-cloud-cost pipelines. Verified Production Benchmarks (HP Z4 G4: Xeon W-2155, 128GB ECC RDIMM, ASUS RTX 5060 Ti 16GB Blackwell sm_120): - Batch Throughput: 10,000,000 (10M) records end-to-end in 10.9 hours (~254.9 req/s). - Error Rate: Exactly 0.00% (10,000,000 / 10,000,000 verified across 2 consecutive runs). - Host Memory Lock: Clamped between 6.7GiB and 9.4GiB in O(1) constant space via libjemalloc2 decay tuning (dirty_decay_ms:2000, muzzy_decay_ms:2000) and Polars streaming. Zero OOM kills. - Hardened Container Base: NVIDIA NGC 25.02-py3 (CUDA 12.8 native / Blackwell sm_120 Compute Capability 12.0). - Crash-Resilient State Storage: 3.4GB SQLite WAL 2-phase atomic commits (PRAGMA integrity_check: ok across hard SIGKILL events). - Network Isolation: Executed under Docker --network none flags with zero external API calls. Core Engineering Capabilities: 1. Zero-Cloud-Cost & Extreme Local Throughput: Ingest, parse, and aggregate massive semi-structured files (JSON, CSV, Parquet) on 128GB ECC RAM using Polars and DuckDB without cloud cluster overhead. 2. Mathematical Data Purifying & Noise Stripping: Isolate fee-schedule anomalies, corrupted records, and outlier noise in complex domain registries to match industry benchmarks. 3. Full-Stack Boundary Diagnostics: Root-cause latency spikes and data mismatches across decoupled web frontends (Next.js) and static object storage shards (Supabase/S3) to eliminate database IOPS saturation. 4. Legacy Codebase Rescue & Surgical Hotfixing: Reverse-engineer undocumented, broken repositories and CLI tools to deliver minimal, targeted patches that restore production stability immediately. 5. Zero-Regression & Contract Invariance: Upgrade internal calculation logic while maintaining 100% backward compatibility, validated by automated regression tests completing in seconds. 6. Cryptographic Provenance: 100% of Git commits and IaC deliverables are hardware-signed via YubiKey 5C NFC (ED25519-SK) with SHA-256 checksum manifests. 7. Asynchronous Technical Governance: 100% written-only execution. All pull requests, root-cause logs, and architectural decisions are delivered asynchronously without recurring meetings. Bare-Metal Verification Proofs: Please refer to the Portfolio section below to view the raw 4K hardware telemetry logs for: - Air-Gapped Bare-Metal vLLM Inference & YubiKey GPG - Bare-Metal Cold Boot & Air-Gapped vLLM 200 OK - OOM Immunity under 100% CPU Saturation & 9.4GB Memory Lock - Kill-9 Immunity & SQLite WAL 2-Phase Atomic Recovery - Anti-Spoofing Verification & SHA-256 Hash Manifest Delivery Model: Fixed-price milestone contracts only ($1,000 - $5,000). Direct delivery of tested Docker configurations, streaming scripts, and kernel tuning runbooks to your host or private VPC on an AS-IS basis under defined liability caps. No hourly billing, no invasive tracking software, and no third-party cloud data exposure.