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Mithun Das
Operational Engineering

Operational Systems

I design and implement custom business operating layers. Every system is built resilient, verifiable, and documented to minimize maintenance overhead.

AI Customer Support System

Problem ContextSupport teams spend hours answering repetitive questions, leading to delayed response times and missed opportunities after-hours.

Proposed SolutionA self-correcting response engine integrated directly into your website chat or support channels, equipped with deterministic escalation filters.

Key Deliverables
Custom system prompts with pre-injected context
Deterministic human-in-the-loop escalation rules
Structured data capture for CRM sync
Detailed query audit logging
Execution Pipeline FlowDeterministic
1

Visitor submits query through frontend widget or chat API

2

API route sanitizes input and performs context verification

3

AI engine matches query against approved product context

4

Response synthesized with safety guardrails

5

Uncertain intents escalated to human support via CRM notification

Technologies Deployed
OpenAI APINext.js Route Handlersn8n OrchestratorGoogle Sheets/CRM

WhatsApp Lead Automation System

Problem ContextLeads arriving from meta ads or outbound channels remain uncontacted for hours, reducing conversion likelihood by up to 80%.

Proposed SolutionInstant, automated WhatsApp acknowledgement pipeline that scores leads, validates contact credentials, and dispatches custom template followups.

Key Deliverables
WhatsApp Cloud API template integration
Automated lead scoring based on custom criteria
CRM sync and priority status tagging
Dynamic auto-reminders for non-responders
Execution Pipeline FlowDeterministic
1

Inbound lead event captured from Webhook (Facebook Ads, landing forms)

2

Zod schema validation sanitizes name, email, and phone number

3

Lead scoring node grades qualification level in real-time

4

WhatsApp Cloud API dispatches interactive template message

5

Slack/Telegram alert notifies sales team with lead summary

Technologies Deployed
WhatsApp Cloud APIn8n OrchestratorOpenAI APIPostgreSQL/Sheets

CRM & Operations Integration System

Problem ContextSales representatives waste time duplicating contact data across tools, spreadsheets, email lists, and bookkeeping tools.

Proposed SolutionA resilient, webhook-driven data router that synchronizes records across your stack with automated field mapping, retry loops, and failure alerts.

Key Deliverables
Resilient retry policies on transient network errors
Field sanitization and duplicate record prevention
Multi-system sync (HubSpot, Salesforce, n8n, custom DBs)
Secure webhook signature authorization
Execution Pipeline FlowDeterministic
1

Webhook signals record update in source CRM

2

Normalizer maps custom fields to target schema

3

Deduplication check queries target system via API

4

Synchronized record written; audit log timestamped

5

Transient failures automatically retried with exponential backoff

Technologies Deployed
REST APIsNode.js Helpersn8n WebhooksLog Storage

Document Processing & AI Extraction System

Problem ContextOperations teams spend hours daily copying data from invoices, contracts, or application PDFs into database systems.

Proposed SolutionAn automated extraction pipeline that parses files, uses GPT models to structure data, and queues doubtful records for manual administrator review.

Key Deliverables
OCR parsing for scanned documents and PDF attachments
Confidence-weighted manual routing (Human-in-the-loop)
Strict schema enforcement using JSON Mode
Automatic folder archiving and cloud storage sync
Execution Pipeline FlowDeterministic
1

File uploaded or received via automated email webhook

2

File parser extracts text blocks or executes OCR scanning

3

GPT model extracts parameters based on predefined JSON schema

4

Confidence score calculated; failures routed to review queue

5

Verified data exported to production database system

Technologies Deployed
OpenAI JSON Moden8n File HandlersGoogle Drive APIMongoDB

Internal Approval Workflow System

Problem ContextPurchase requests, expense claims, or operational sign-offs get lost in email threads or chat channels without audit trials.

Proposed SolutionA central sign-off engine that manages request routes, dispatches action cards to Slack/WhatsApp, and logs decisions to a tamper-proof sheet.

Key Deliverables
Interactive WhatsApp/Email choice buttons
Role-based matrix routing logic
SLA timers with automated escalation alerts
Comprehensive CSV audit trail
Execution Pipeline FlowDeterministic
1

Requester submits detail form on company intranet portal

2

Approval engine matches parameters against corporate matrix

3

Notification sent to approver containing dynamic accept/reject buttons

4

Approver registers choice; decision written to audit sheet

5

Requester notified; downstream execution triggered

Technologies Deployed
Next.js Formsn8n State ManagementResend APIGoogle Sheets

Need a custom automation architecture?

Every business operation has unique quirks. We design integrations that fit your existing software stack, API keys, and workflow compliance.