Multi-SaaStr Workflow & CRM
n8n Orchestration & RevOps
n8n · Redis · PostgreSQL · FastAPI
$35,900 / yr Saved vs. Zapier
Enterprise Conversion Lift
Sub-300ms AI lead scoring routes enterprise buyers to sales reps before prospects drop off.
Manual Data Entry Eliminated
Automated webhook synchronization reconciles CRM, billing, and project tracking records automatically.
Annual Cloud Automation Savings
Self-hosted containerized n8n cluster completely eliminates per-task commercial SaaS markups.
Overcoming Punitive Cloud SaaS Pricing & Dropped Webhooks
High-velocity revenue teams face crippling task execution limits and exponential subscription fees on commercial iPaaS platforms (Zapier, Make.com) — while suffering from silent lead losses when cloud webhooks fail without automated retry mechanisms.
Punitive Cloud Pricing
Zapier and Make.com scale costs exponentially as monthly event volumes reach hundreds of thousands, penalizing operational growth.
Fragile Webhook Pipelines
Dropped webhooks silently lose high-value enterprise leads when external CRM endpoints experience transient network outages.
Three Strictly Decoupled Production Tiers
Edge Ingress Dispatcher
FastAPI and Redis streams validate incoming webhooks, verifying HMAC signatures and enforcing cryptographic idempotency keys to eliminate duplicates.
n8n DAG Workflow Fleet
Executes 36 production DAG workflows coordinating real-time LLM lead enrichment, automated invoice compiling, and bi-directional CRM synchronization.
Dead-Letter & Alert Plane
Diverts transient network failures into transactional retry queues with automated exponential backoff and instant interactive Slack executive alerts.
Production Engineering Tooling
n8n Workflow Hub
Self-Hosted · 36 Production DAGs
Orchestrates multi-step business pipelines coordinating AI lead enrichment, billing, and CRM synchronization.
FastAPI Ingress
Python 3.11 · HMAC Verification
High-throughput ingress gateway validating incoming webhooks and enforcing cryptographic payload signatures.
Redis 7 In-Memory
Lua Scripts · Dead-Letter Retry
Guarantees zero duplicate transactions through atomic key leases and manages exponential backoff queues.
PostgreSQL 15
Relational Ledger · Foreign Keys
Central revenue database storing verified transaction logs, lead scoring metrics, and audit records.
Next.js 15.1
App Router · React 19 · Charts
Unified internal executive dashboard visualizing real-time pipeline throughput and automation cost savings.
OpenAI GPT-4o
Structured Output · Sub-300ms
Parses unstructured inbound emails and RFP forms to classify enterprise intent and budget capacity automatically.
Docker Container
Multi-Container Compose Fleet
Hermetic containerized stack packaging n8n, Redis, PostgreSQL, and FastAPI inside private company infrastructure.
Slack Alerting
BlockKit Interactive Messages
Real-time dispatch notifying account executives of high-priority enterprise leads and billing anomalies.
Celery Workers
Distributed Workers · Retry Logic
Executes heavy background batch reconciliation jobs and scheduled daily revenue reporting workflows.
Python 3.11
AsyncIO · Pydantic v2 · HMAC
Underlying runtime executing custom n8n function nodes, webhook validation, and database migrations.
TypeScript
Strict Mode · Shared Schemas
Guarantees contract parity across Next.js dashboard components and n8n webhook data models.
Ubuntu Linux
Air-Gapped VPS · UFW Hardened
Dedicated enterprise host operating with strict firewall rules and zero third-party cloud data leakage.
Verified Production Topology Blueprint
The Dakeek multi-service workflow topology — FastAPI edge dispatcher, n8n autonomous DAG cluster, Redis idempotency queues, PostgreSQL state ledger, and automated Slack alerting.

Interactive Code Workbench
import hmac
import hashlib
from fastapi import FastAPI, Header, HTTPException
app = FastAPI()
@app.post("/api/v1/webhook/ingress")
async def secure_webhook_ingress(
payload: dict,
x_dakeek_signature: str = Header(...)
):
"""Enforce cryptographic HMAC signature & idempotency key."""
expected_sig = hmac.new(
b"dakeek_secret_key",
payload["raw_body"].encode(),
hashlib.sha256
).hexdigest()
if not hmac.compare_digest(x_dakeek_signature, expected_sig):
raise HTTPException(status_code=403, detail="Invalid HMAC Signature")
# Queue to Redis for n8n cluster execution
return {"status": "QUEUED_FOR_N8N", "pipeline": "revops_crm_sync"}$35,900 / year
Zero per-task SaaS markup vs. commercial tools
36 Production DAGs
Automated billing, lead triage, and CRM sync
0.00% Packet Drop
Dead-letter queues with exponential backoff
10-Step End-to-End Request Journey
Click any step to trace the journey of an automated revenue transaction — from CRM webhook ingress through cryptographic idempotency verification, AI lead scoring, database sync, and executive alerting:
CRM Inbound Webhook Event
HubSpot / Stripe dispatches webhook event to Dakeek edge gateway over encrypted TLS 1.3.
Cryptographic HMAC Auth
FastAPI gateway computes SHA-256 HMAC signature against shared secret to reject spoofed payloads.
Redis Idempotency Verification
Atomic Lua script verifies unique idempotency key to prevent accidental duplicate invoices or tasks.
n8n DAG Pipeline Routing
Self-hosted n8n cluster assigns the task to one of 36 production DAG workflows based on event headers.
AI Entity Triage (<300ms)
OpenAI GPT-4o extracts intent, budget ranges, and company revenue brackets in under 300ms.
PostgreSQL Database Upsert
Enriched enterprise lead persisted into local PostgreSQL instance with foreign keys and audit history.
Automated Invoice Generation
Finance workflow compiles PDF invoice and triggers Stripe billing draft with zero manual data entry.
Multi-Service Cloud Sync
Simultaneous bi-directional synchronization across Airtable, Notion, and internal executive boards.
Slack Executive Notification
High-value deals broadcast rich interactive Slack cards with one-click approval buttons.
Dead-Letter Protection & Ack
Transient endpoint failures diverted into automated exponential backoff queues; HTTP 200 returned.
Ready to automate operations and eliminate recurring SaaS costs?
We design and deploy self-hosted n8n workflow clusters, idempotent webhook engines, and AI lead scoring pipelines tailored to your enterprise stack.