Nirvahn ThakurNirvahnThakurMHSA

Claude Code · 1

Primary development workflow, with 15 custom slash commands, hooks and multi-agent orchestration.

Claude API · 2

Agents and apps built on the Anthropic API.

LangChain · 3

Agentic ETL at Nuthan; certified.

Azure OpenAI · 4

Chat and extraction on GPT-4-class models behind production agent backends.

RAG · 5

Record-grounded chat that never truncates retrieved context.

Embeddings · 6

bge-large retrieval that lifted recall@5 from 0.929 to 1.000.

Model evaluation · 7

Gold sets, F1 and decline-rate evals, and A/B comparisons that pick the model.

Local models · 8

Benchmarked Llama, Mistral and Phi; fine-tuned and A/B-tested models on Apple silicon; Ollama at home.

LoRA fine-tuning · 9

Fine-tuned 7B/8B adapters locally, then retired them when a 14B base won the A/B.

MLX serving · 10

Self-hosted 14B model on Apple silicon with speculative decoding (about 1.8x faster).

Code knowledge graphs · 11

Codebases as queryable graphs; agents read the graph report instead of raw files.

Token cost engineering · 12

Output compression, usage profiling and MCP schema pruning after a 97-session audit.

Voice pipelines · 13

Offline Whisper speech-to-text and Piper text-to-speech over the Wyoming protocol.

MCP · 14

A 10-tool migration server over Streamable HTTP, with the UI as an MCP client.

CrewAI · 15

Multi-agent ETL automation; certified.

LangGraph · 16

Multi-stage agent graphs with a deterministic verifier against hallucination.

Agent observability · 17

Execution tracing, failure monitoring and token-level cost tracking.

Langfuse · 18

Traced every stage of agent pipelines in self-hosted deployments.

Multi-agent orchestration · 19

Agent teams and git-worktree-isolated workers with a completion relay.

Claude Code hooks · 20

Hooks on 14 event types, including a per-turn canary against context rot.

Pydantic · 21

Structured LLM outputs; certified.

AutoGen · 22

Multi-agent design patterns.

OpenRouter · 23

Model routing and fallback in Hermes Agent.

Python · 24

Data pipelines, agents and backends.

SQL · 25

Pipelines and analytics queries.

Snowflake · 26

Migration source; SnowPro Core certified.

Databricks · 27

Migration target with COPY INTO.

Cortex Search · 28

Managed vector search on Snowflake for document RAG.

PostgreSQL · 29

Backends for analytics and ChartHaven accounts.

Supabase + RLS · 30

Row-level security on every table and an idempotent provisioning script.

SQLite · 31

Local-first stores: job queues in WAL mode, agent memory and trade logs.

ETL · 32

Three manual processes automated with agents.

CouchDB sync · 33

Self-hosted end-to-end encrypted notes sync across four devices.

Knowledge pipelines · 34

Dedupe-on-ingest, document-to-Markdown conversion and nightly health checks.

Market data systems · 35

Kalshi and Polymarket clients, macro feeds, half-Kelly sizing and a risk module.

FastAPI · 36

Backends for analytics and the migration tool.

Node / Express · 37

ChartHaven backend.

React · 38

Front ends for analytics and tooling.

TypeScript · 39

Front ends and this site.

Next.js · 40

FastAPI-backed web apps, and this site.

Tailwind · 41

Design systems on Tailwind v4.

SwiftUI · 42

ChartHaven iOS app with SwiftData, PDFKit and Vision OCR.

Server-sent events · 43

Live job logs and streamed chat tokens.

asyncio · 44

Background jobs with bounded-queue backpressure.

Auth & MFA · 45

bcrypt, TOTP MFA, refresh tokens and least-privilege database roles.

API integration · 46

Todoist, Gmail OAuth and the Obsidian REST API, with idempotent two-way sync.

Docker · 47

Self-hosted services and analytics backends.

n8n · 48

A 26-node two-way task sync, email triage and note-sync workflows.

Mesh VPN · 49

Private network across every node.

Prometheus + Grafana · 50

15-second scrapes and generated, query-validated dashboards.

Alerting & watchdogs · 51

Two-strike alerts, a dead-man heartbeat and a stale-workflow detector.

Linux networking · 52

Root-caused a gateway fault with tcpdump and iptables tracing.

Root-cause analysis · 53

Eight documented incidents with named root causes.

CI/CD · 54

GitHub Actions, Dependabot, pre-commit with gitleaks, and an iOS build check.

Testing · 55

jest and supertest with a coverage gate; pytest regression suites.

AppSec · 56

Semgrep SAST plus weekly ZAP, Nuclei and authorization-probe DAST.

Home Assistant · 57

Smart-home hub on a Pi 5 with Matter devices and an MQTT bridge.

Render / Vercel · 58

Hosting for backends and this site.

Linux / Pi · 59

Raspberry Pi 5 and Pi 4 nodes.

HIPAA-oriented design · 60

Encryption, audit logging and least-privilege access in ChartHaven.

Applied cryptography · 61

Secure Enclave P-256, ECDH/HKDF and AES-256-GCM sealing.

EMT (BLS) · 62

Frontline care at Vital Care EMS.

Interoperability · 63

FHIR R4 bundles with LOINC and ICD-10 coding; C-CDA record import.

Health systems · 64

Georgetown MHSA: care pathways and payer operations.

Statistics · 65

t-tests and effect sizes across 500 simulated cases.

Decision modeling · 66

A utility function weighing severity, specialty fit, transport and ED delay.