Unified ERP Transaction Bus
Eliminating discrepancies between site engineers, procurement officers, and central finance teams.
DIGITAL TRANSFORMATION & ERP
Replacing legacy spreadsheets with unified live software.
We modernize legacy monoliths and fragmented manual workflows - consolidating tendering, procurement, site execution, subcontractor billing, and finance audit into a single live ledger like BJSN OS.
TRANSFORMATION SPECSBJSN OS 11 MODULES
Core SystemBJSN OS Construction ERP
Ledger TypeSingle ACID Transaction Ledger
Modules11 Modules Live
IP Ownership100% Transfer
Bengaluru ERP Practice
11 ModulesSingle Ledger
BJSN OS unified ERP coverage
Zero SpreadsheetsLive Data
Replacing manual Excel workflow rot
100% AuditAudited
Immutable financial audit trails
100% IPFull Ownership
Source code and migration scripts
01 / CAPABILITIES
Digital transformation capabilities.
Spreadsheet & Monolith Migration
Refactoring fragile legacy desktop software into secure, web-accessible API microservices.
Automated Material Verification
Digitizing physical security gate passes, lorry weighbridge receipts, and contractor material dispatches.
02 / TRANSFORMATION PHILOSOPHY
Digital transformation isn't buying licenses - it's unifying operational truth.
We build software that adapts to how real work gets done on sites, factories, and field offices.
03 / ERP TOOLCHAIN
Curated ERP transformation stack.
01 // CORE ENGINE
- BJSN OS Construction ERP
- Node.js & Go Backends
- PostgreSQL ACID Ledger
- Redis Session Store
02 // INTERFACES
- Next.js 15 Web Portal
- Flutter Site Supervisor App
- Digital Gate Pass QR
- PDF Invoice Generator
03 // AUDIT & REPORTING
- Immutable Ledger Audit
- Role-Based Access (RBAC)
- CSV/Excel Export Engine
- Executive BI Charts
04 // INTEGRATION
- Tally & SAP Connectors
- GST Tax Compliance API
- Bank Payment Gateways
- SMS/WhatsApp Alerts
04 / TRANSFORMATION WORKFLOW
Our 4-step ERP implementation model.
Process & Ledger Audit
Mapping legacy spreadsheets, approval hierarchy, and site workflows.
Single Ledger Setup
Configuring BJSN OS core database schemas and role-based permissions.
Single Site Pilot
Deploying BJSN OS to a single active construction site for field validation.
Enterprise Rollout
Expanding across all project sites with full data migration and training.
05 / INSPECTABLE CODE
Digital Transformation code snippets.
erp/single_ledger.ts
ACID-compliant single ledger engine consolidating site supervisor logbooks, material requisitions, and contractor billing in real-time.
1import { db } from "@arivu/db";23export async function processSiteRequisition(reqId: string) {4 return await db.transaction(async (tx) => {5 const requisition = await tx.requisitions.find(reqId);6 await tx.ledger.insert({7 type: "MATERIAL_REQUISITION",8 amount: requisition.cost,9 siteId: requisition.siteId,10 timestamp: new Date()11 });12 return tx.requisitions.updateStatus(reqId, "APPROVED");13 });14}06 / GUARANTEES
Transformation guarantees.
100% IP Transfer
Full source code, database migrations, and ERP module documentation transferred.
Zero Discrepancy Guarantee
Single live ledger eliminating financial discrepancies between site and finance.
Upfront Mutual NDA
Protecting your cost structures and site data with formal non-disclosure agreements.
ENTERPRISE CASE
BJSN OS: Construction ERP Platform
11-module ERP replacing six disconnected systems with one live ledger covering tendering, procurement, site execution, billing, and finance audit.
BJSN OS MODULE MATRIX11 MODULES LIVE
1. Tendering
7. Gate Passes
2. Procurement
8. Equipment Tracking
3. Material Requisition
9. Billing
4. Site Logbook
10. Audit Report
5. Quality Audit
11. Executive BI
6. Attendance
07 / TRANSFORMATION FAQS
Questions about digital transformation?
How does Arivu replace legacy spreadsheets in construction?
We replace fragmented Excel files with BJSN OS - a unified 11-module ERP system running a single ACID live ledger covering site supervisor logbooks, material requisitions, subcontractor billing, gate passes, and audit reports.