Software Architecture & Custom ERP / CRM Development

Building The Backbone Behind Every Unstoppable Business

A Decade in the Making. 20+ Businesses Running On It.

As a software architect, I build the systems that businesses run on - custom ERP and CRM platforms, connected websites and apps, and the everyday infrastructure your team depends on. For over a decade, businesses have trusted me to build software that actually works, so they can spend less time managing systems and more time running their business.

SYSTEM RELIABILITY99.9%ZERO UNPLANNED DOWNTIME
RESPONSE TIME< 12 HRSDIRECT, NO DELAYS
CONFIDENTIALITYNDAON EVERY ENGAGEMENT
Direct Architect Access Lifetime Code Support ZERO_MIDDLEMEN
Subham Sarkar, Software Architect and Systems Engineer
SUBHAM SARKAR
10+ YRS DEPLOYED EXP
100% SOVEREIGN IP HANDOVER

Trusted By & Associated Partners

CORE DISCIPLINES

Master Blueprint Capabilities

SPECIFICATION REGISTRY: SS-01 TO SS-05
[SPEC-01]

ERP Systems Architecture

Resource models, immutable financial ledger logic, real-time multi-warehouse inventory synchronization, and custom audit pipelines.

RESILIENT STATE
→
[SPEC-02]

Enterprise CRM Engines

Unified enterprise deal pipelines, granular role-based tenant isolation, customer telemetry history, and custom communication routing.

ISOLATED TENANCY
→
[SPEC-03]

Web & Mobile Ecosystems

High-throughput, ultra-low latency customer portals and cross-platform native interfaces with synchronized offline state machines.

OFFLINE RESILIENCE
→
[SPEC-04]

Brokers & Event Buses

Asynchronous event streaming, bank clearinghouse hooks, robust queue orchestrators (Kafka/RabbitMQ), and distributed circuit breakers.

ZERO PACKET LOSS
→
[SPEC-05]

AI Agents & Automation

Deterministic reasoning agents, air-gapped local RAG infrastructure, document analysis nodes, and automated invoice triage pipelines.

LOCAL RAG / AIR-GAPPED
→
WHY THIS FEELS DIFFERENT[ENG-03]

Starting Over With a New Developer Is Scary. Here's How We Make It Safer.

If you've been burned before - an unfinished website, a system you don't understand, a developer who disappeared - that caution is fair. Here's what's built into how we work, specifically because of that.

PAYMENT STRUCTURE01 // MILESTONES

You Pay As You See Progress

Work is broken into milestones. You see real, working progress before each payment - never a large sum upfront for something you can't yet see.

PAYMENT TERMSMILESTONE-BASED
SOVEREIGN OWNERSHIP02 // IP ISOLATION

You Own Your System - No Lock-In, No Hostage Situations

Once complete, your code and documentation are fully yours - no one else needed to maintain or extend it, unless you choose to.

DELIVERABLE SPEC:FULL SYSTEM, ON COMPLETION
CONFIDENTIALITY03 // NDA PROTECTED

Confidentiality Is Standard, Not an Upsell

Every engagement is covered by a clear confidentiality agreement before any technical details are discussed. Your business information stays protected by default.

PROTOCOL:SIGNED NDA, EVERY PROJECT
ZERO SHARED REPOSITORIES
ARCHITECTURAL TENURE
10+Years

Battle-tested enterprise continuity without codebase rot or unmaintainable architectural debt.

DEPLOYED ECOSYSTEMS
20+Enterprises

Distributed engines running inventory logistics, international trade, and high-frequency settlement.

CUTOVER BENCHMARK
100%Zero-Loss

Zero unplanned downtime recorded across mission-critical legacy database and schema cutovers.

FEATURED CASE STUDIES[PORTFOLIO-EXCERPTS]

Proven Infrastructure Running Behind Production Firewalls.

View All Work (Dossiers)
  • Autonomous Multi-Port Supply Chain ERP view 1
  • Autonomous Multi-Port Supply Chain ERP view 2
  • Autonomous Multi-Port Supply Chain ERP view 3
Global Freight & Customs // Multi-Port Logistics
Happy clients: 200+Rotations: 300+

Autonomous Multi-Port Supply Chain ERP

Full-scale structural overhaul replacing fragmented spreadsheets with an isolated, multi-currency ledger processing 1.2M automated manifests monthly.

THE CHALLENGE

Legacy spreadsheet fragmentation across 14 freight terminals caused compliance lag and massive processing delays.

THE APPROACH

Engineered an isolated event-driven ERP with multi-currency dynamic hedging and zero-loss offline sync.

EXECUTION PIPELINE
Legacy Spreadsheets
Unified Multi-Ledger
Automated Customs
lol case
EXECUTION PROTOCOLSTATUS: ACCEPTING Q3 ROADMAPS

Not Sure What You Actually Need? That's a Normal Place to Start.

Whether you're starting from a rough idea or you've already got a clear plan, we start the same way - a conversation. Tell us where things stand, and we'll tell you plainly what it would take, what to expect, and how we'd approach it.

No commitment. Just a conversation.