Sandip Paul
Sandip PaulFreelance Architect
Available for Freelance Projects

Senior Freelance Full Stack Developer • Systems & Cloud Architect

From idea to production,
I build software that works.

High-performance SaaS platforms, e-commerce systems, dashboards, and custom software. Highly knowledgeable full stack developer available for freelance contracts, rapid MVP builds, and technical architecture consulting.

Hire for a Project
View Resume
View Live Work
  • Hire for Freelance
  • SaaS & MVP Engineering
  • Full Stack (React, Node, Angular)
  • AWS Cloud & DevOps
  • E-Commerce Systems
Architecture Blueprint
TypeScriptCI/CDLinuxJWT / OAuth2DockerAWS Cloud
system-runtime.config / production

Built from Interface to Cloud

5 Layers Active
01Frontend Layer
<45ms FCP

Reactive interfaces & state hydration

React 19Next.jsAngularTypeScript
02API & Gateway
<18ms Latency

REST endpoints, WebSockets & JWT guards

RESTWebSocketsGraphQLJWT / OAuth2
03Backend Core
99.98% Uptime

Event-driven microservices & worker queues

Node.jsExpress.jsMicroservicesQueues
04Data Layer
Multi-AZ Sync

Optimized indexing, transactional integrity & cache

MongoDBPostgreSQLRedisTransactions
05Cloud & DevOps
Zero Downtime

Containerized deployment, NGINX & automated CI/CD

AWSDockerNGINXCI/CD Actions
FLOW· UI › GATEWAY › LOGIC › DATA › CLOUD
READY FOR PRODUCTION

Sandip Paul/profile-banner.png

Fullstack AWS Architect
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Sandip Paul - Software Architect & Fullstack Developer with AWS (Architect, Build, Deploy, Scale)
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Cloud Architecture

AWS · Scalable Infrastructure · High Availability

CI/CD & DevOps

Automation · Pipelines · Jenkins & GitOps

Docker & Kubernetes

Microservices · Containers · Orchestration

Databases & APIs

REST & Real-time · SQL & NoSQL · System Design

AI Product Development

LLM Systems · Intelligent Automation · Production AI

+91 73188 86644
sandippaul7318@gmail.com
linkedin.com/in/sandip-paulIndia
Work with Sandip →

Freelance Services & Architecture

What I Can Build For Your Business

Senior full-stack engineering and cloud architecture for startups, scale-ups, and established enterprises. Available for freelance contracts, MVP builds, and architectural consulting.

Custom Web Development

Modern, responsive and high-performance websites and web applications tailored to your business requirements.

React 19Next.jsAngularTypeScriptTailwind CSS
Discuss Web Application

SaaS & MVP Engineering

Build complete multi-tenant SaaS products from technical architecture and rapid MVP development to production cloud deployment.

Multi-tenant AuthUser ManagementAdmin DashboardsSubscription BillingWebSocket SyncCloud Deployment
Build SaaS MVP

E-Commerce & Inventory Systems

High-compliance digital stores, real-time multi-warehouse inventory management, atomic SKU tracking, and automated checkout pipelines.

Live Inventory SyncMulti-Warehouse SKUKYC VerificationPayment GatewaysAutomated Invoicing
Build E-Commerce System

Backend & Real-Time APIs

Secure and scalable backend systems, high-concurrency REST APIs, WebSocket feeds, and microservice integrations.

Node.jsExpress.jsMongoDBMongooseSQLRedis Pub/Sub
Discuss Backend & APIs

Cloud & DevOps Architecture

Deploy, secure, and maintain production applications using modern AWS cloud infrastructure, containerization, and automated CI/CD.

AWS Lightsail & EC2DockerNGINXLinuxCI/CD ActionsCost Optimization
Scale on Cloud

System Architecture & Consulting

Design scalable application architecture, database schemas, and microservice strategies before development begins.

System DesignAPI ArchitectureDatabase ModelingSecurity AuditsFractional CTO
Consult Architect

Case studies

Selected Projects

Real products and systems I've worked on.

Verified Production Systems

Platforms & Systems Engineered For Live Clients

6 Verified Production Brands
United Trading Agency official logo

UTA Air Guns

E-Commerce & Inventory

Online College Street official logo

OCS

E-Commerce

Cullen Cleaning Services official logo

CCS

Operations & LMS

PMT Plus official logo

PMT+

Enterprise SaaS

The Capital Conclave official logo

Capital Conclave

Event Management

HungryTop official logo

HungryTop

Food Delivery

pmt.plus
Client Identity
P+
Sprint 24 • Q4 Release CycleOn Schedule
AKSR+4

Tasks Velocity

32 / 38

Hours Logged

164.5 hrs

98% efficiency

Deployment

99.98%

AWS Multi-AZ
Realtime WebSocket Activity Feed
Completed4.5h
Role-Based Auth & Permissions Gateway
In Review2.0h
Analytics Data Aggregator Worker
In Progress6.5h
Interactive Architecture PreviewVerified Production Stack
01Project Management SaaSFeatured

PMT+

Project Management & Activity Tracking SaaS

A scalable project management platform designed for project planning, task management, collaboration, real-time updates, analytics, time tracking, automation, integrations and AI capabilities.

Role — Project Lead • Software Architect • Full Stack Developer

Project ManagementTask ManagementCollaborationDashboardsReal-Time UpdatesAnalyticsTime TrackingAutomationIntegrationsAI
Frontend→
API Layer→
Authentication→
Business Logic→
Database→
Cloud Infrastructure
Visit Live Project
projects.ccscleaning.com
Client Identity
CCS Dispatch Hub • 13 Active Commercial Sites
Live Sync
Dispatched3

Metro Health Clinic

08:30 Shift

Terminal Sanitization

Crew A • 3 Techs

Apex Corporate Suite

11:00 Shift

Carpet Extraction

Crew C • 2 Techs

In Progress4

City Plaza Atrium

75% Done

Floor Buffing & Wax

Crew B • 4 Techs

Tech Park Block 4

40% Done

Window & Facade Wash

Crew D • 3 Techs

QA Verified6

Westside Labs

99.4% Pass

Cleanroom Class 100

Lead: M. Davis

Riverside Center

Signed Off

Post-Event Deep Clean

Lead: T. Green

Interactive Architecture PreviewVerified Production Stack
02Custom Project Management Tool

CCS Projects

Client project management tool built around real workflows

A dedicated client project management tool designed around operational workflows, team coordination, site dispatch, and project visibility.

Role — Project Lead • Software Architect • Full Stack Developer

Project / Task WorkflowsTeam CoordinationCommercial Site DispatchProgress TrackingNotificationsDashboards
Frontend→
REST API→
Auth & Roles→
Services→
Database
View Live Tool
academy.ccscleaning.com
Client Identity
LMSOSHA Commercial Cleaning & Safety Series
84% Completed
▶
18:24 / 24:10Lesson 03 • Chemical Dilution Safety
Interactive Knowledge CheckPassed (100%)
01. PPE & Biohazard✓ 100%

Certified on Jan 14

02. Chemical Dilution● Active (75%)
03. Final Exam🔒 Locked

Unlocks after Module 02

Interactive Architecture PreviewVerified Production Stack
03Learning Management System

CCS Academy

Structured digital training for learners and admins

A structured learning management platform for digital training and learner workflows.

Role — Software Architect • Full Stack Developer

Course ManagementCourse BuilderLearner WorkflowsAuthenticationRole-Based AccessContent Management
Frontend→
API→
Auth & Roles→
Content Engine→
Database
View Project
onlinecollegestreet.com
Client Identity
Live interface preview of https://onlinecollegestreet.com/
Production Interface PreviewHigh Resolution UI
04E-Commerce / Online Bookstore

Online College Street

An online bookstore from discovery to checkout

An online bookstore and e-commerce platform supporting book discovery, product categories, product details, cart, checkout, customer accounts and ordering workflows.

Role — Project Lead • Software Architect • Full Stack Developer

Book DiscoveryProduct CategoriesProduct DetailsCartCheckoutCustomer Accounts
Storefront→
API→
Catalogue→
Orders→
Database
Visit Project
www.utaairguns.com
Client Identity
Live interface preview of https://www.utaairguns.com/
Production Interface PreviewHigh Resolution UI
05E-Commerce & Precision Sports Retail

United Trading Agency (UTA Air Guns)

Licensed precision sports air guns, rifles & shooting accessories — Est. 1961

United Trading Agency (UTA 1961) is a licensed dealer and premier supplier of precision sports air guns, air rifles, air pistols, match pellets, optical sights, and target accessories. Serving sports shooters, national shooting clubs, Olympic training athletes, and enthusiasts across India from Kolkata, West Bengal. Engineered end-to-end: high-conversion consumer storefront, full-scale inventory control system with real-time SKU tracking, sports licensing verification, and comprehensive national and regional SEO.

Role — Lead E-Commerce Architect • Full Stack Developer • SEO Specialist

Precision Sporting CatalogAir Rifles & Match PistolsPellets, Optics & Target GearLicensed Dealer Est. 1961Full Technical SEO ArchitectureKolkata & Pan-India Search Dominance
E-Commerce Storefront→
Product Catalog Engine→
Technical SEO & Schema→
Cart & Order Workflows→
CDN & Asset Pipeline
Visit Website

Independent work

Products I've Built

Independent products created from idea to working software.

In development
Client Identity
🎛️
PMT Controller • Central AdministrationGoverning PMT+
SAP Models Active

Managed Products

PMT+ Suite

3 Products Linked

Pricing & SAP Model

Enterprise Tier

Dynamic Seat Billing

RBAC Enforcement

Granular Tree

Menu & Sub-Menu
Menu & Sub-Menu Permission HierarchyLive Role Binding

Dashboard & Analytics › Executive KPI Views

Access: Admin, Manager, Lead

Enforced ✓

Sprint & Kanban Engine › Backlog & Task Board

Access: All Team Members

Enforced ✓

Pricing & SAP Models › Seat Licensing & Tiers

Access: Super Admin Only

Enforced ✓

Dynamic RBAC Matrix › Menu & Sub-Menu Access

Access: Security Officer

Enforced ✓
Interactive Architecture PreviewVerified Production Stack

Enterprise Multi-Product Control Plane

PMT Controller

Lead Software Architect • Full Stack Developer

A centralized enterprise administration and control plane governing multiple PMT products. Manages multi-tenant pricing tiers, SAP subscription models, dynamic multi-level role permissions, and granular menu & sub-menu access controls.

Multi-Product ManagementDynamic Pricing TiersSaaS / SAP Licensing ModelsRole-Based Access Control (RBAC)Menu & Sub-Menu PermissionsTenant GovernanceFeature Flag EngineAudit & Security Logs
In development
Client Identity
⚡
PMT Tracker • Cross-Platform Activity Client
Tracking: 07h 19m
Supported Systems:
🪟Windows🐧Ubuntu🍎macOS
Active Window & Full User Activity94% Productive
Visual Studio Code4h 22m

pmt-controller / rbac-service.ts

Terminal (Bash / CLI)1h 45m

docker compose up • test suite

Browser (PMT+ Portal)1h 12m

Sprint 24 Board & PR Reviews

Keystroke & Window Focus EngineEncrypted Cloud Sync → PMT+
Interactive Architecture PreviewVerified Production Stack

Cross-Platform Desktop Application

PMT Tracker

Desktop Application Architect • Developer

A high-performance cross-platform desktop application running on Windows, Ubuntu Linux, and macOS. Tracks user full activity, productive time, active application windows, keystroke/mouse activity levels, and synchronizes real-time metrics with PMT+.

Multi-OS (Windows, Ubuntu, macOS)Full User Activity TrackingActive Window & App LoggingIdle Time & Keystroke DetectionTime & Attendance TrackingOffline Activity CachingEncrypted Background SyncPMT+ Real-Time Integration
projects.ccscleaning.com
Client Identity
CCS Dispatch Hub • 13 Active Commercial Sites
Live Sync
Dispatched3

Metro Health Clinic

08:30 Shift

Terminal Sanitization

Crew A • 3 Techs

Apex Corporate Suite

11:00 Shift

Carpet Extraction

Crew C • 2 Techs

In Progress4

City Plaza Atrium

75% Done

Floor Buffing & Wax

Crew B • 4 Techs

Tech Park Block 4

40% Done

Window & Facade Wash

Crew D • 3 Techs

QA Verified6

Westside Labs

99.4% Pass

Cleanroom Class 100

Lead: M. Davis

Riverside Center

Signed Off

Post-Event Deep Clean

Lead: T. Green

Interactive Architecture PreviewVerified Production Stack

Custom Project Management Tool

CCS Projects

Project Lead • Software Architect • Full Stack Developer

A dedicated client project management tool designed around operational workflows, team coordination, commercial site dispatch, and progress tracking.

Project / Task WorkflowsTeam CoordinationCommercial Site DispatchProgress TrackingNotificationsDashboardsRole-Based AccessLive Production System
View Live Tool
leadgenpro.hungrytop.com
Live interface preview of https://leadgenpro.hungrytop.com/
Production Interface PreviewHigh Resolution UI

B2B Lead Generation SaaS

LeadGenPro

Product Founder / Developer

An independent SaaS product focused on B2B lead generation using business-data and Google Maps workflows.

Lead DiscoveryBusiness DataData ProcessingLead ManagementWeb ApplicationProductized Lead Generation
Visit Product
www.lottarydunia.live
Live interface preview of https://www.lottarydunia.live/
Production Interface PreviewHigh Resolution UI

Historical Data & Mathematical Draw Analysis

Lottery Dunia

Product Architect • Data Systems Engineer • Full Stack Developer

Lottery Dunia provides independent mathematical analysis of past verified results published by the Directorate of Nagaland State Lotteries and Sikkim State Lotteries. With daily draws held at 1:00 PM (Morning), 6:00 PM (Day), and 8:00 PM (Night), thousands of ticket buyers visit retail counters across West Bengal, Nagaland, Sikkim, and Punjab. The platform delivers specialized mathematical models analyzing the 5th Prize (₹120) through Last 2 Digits frequency — where unlike the 1st prize of ₹1 Crore with only 1 winning ticket across all series, the 5th Prize includes 100 winning 4-digit numbers in every single draw, multiplying statistical coverage across the prize board.

3 Daily Draws (1 PM, 6 PM, 8 PM)5th Prize (₹120) Last 2 Digits Model100 Winning Number CombinationsNagaland & Sikkim Verified ArchivesFrequency Heatmap MatrixMathematical Probability WeightsWB, Nagaland, Sikkim & Punjab Retail InsightsHistorical Result Search & Archive
Visit Product
play.google.com/store/apps/details?id=com.technohelps.lotterytarget&pcampaignid=web_share
লটারি টার্গেট - DEAR • Daily Analytics App
4.6 ★ (10K+ Installs on Google Play)

1:00 PM

Dear Day • Result Live ✓

6:00 PM

Dear Evening • In 38m

8:00 PM

Dear Night • Scheduled

High-Frequency 2-Digit & 4-Digit PoolMathematical Weights
42
78
19
85
63
04
91
37
Search Historical Ticket Archive:e.g. 4289 (2024–2026) 🔍
✓ FCM Live Push Alerts ActiveOffline SQLite Cache ✓
Interactive Architecture PreviewVerified Production Stack

Android Application & Analytics

লটারি টার্গেট - DEAR

Android Application Developer • API Architect

A high-traffic Android utility and statistical data application published on Google Play (com.technohelps.lotterytarget). Built to deliver sub-second access to daily draw results across all 3 daily slots (1:00 PM Dear Day, 6:00 PM Dear Evening, 8:00 PM Dear Night), high-frequency 2-digit and 4-digit number analysis, historical draw archives (2024–2026), and mathematical trend models for thousands of active daily users.

3 Daily Draw Slots (1 PM, 6 PM, 8 PM)Instant Draw Result Push NotificationsHigh-Frequency Number Analytics2-Digit & 4-Digit Pattern HeatmapsHistorical Draw Archives (2024–2026)Offline Result Caching & SQLite StorageFast Ticket Number SearchBengali & English LocalizationGoogle Play Store Production App
Google Play
play.google.com/store/apps/details?id=com.hungrytop&pcampaignid=web_share
Client Identity
HungryTop Food Delivery • Android App
ETA: 20 min
Top RatedBiryani & BowlsBurgersDesserts
★ 4.9

Royal Kolkata Biryani

Aromatic rice & slow cooked tender meat

₹380+ ADD
★ 4.8

Smoked Butter Chicken

Charcoal grilled with makhani gravy

₹290+ ADD
★ 4.7

Paneer Tikka Platter

Fresh cottage cheese with mint chutney

₹240+ ADD
1 Item in Cart (₹380)
Checkout →
Interactive Architecture PreviewVerified Production Stack

Food Delivery Application

HungryTop - Food Delivery

Application Project

The HungryTop food delivery Android application, available on Google Play.

Food DeliveryAndroid AppGoogle Play
Google Play
In development
Client Identity
📚OCS Book Reader • Digital Library & Store
Sync Active
OCS Edition
System Design
Vol. 2

System Architecture & Scalability

Reading Now

Chapter 6 • High-Throughput Event Streams

68%

Distributed Systems & Cloud Architecture

M. van Steen

320 / 410 p.78%

Principles of Modern Economics

N. G. Mankiw

180 / 400 p.45%

Data Structures & Algorithm Design

T. H. Cormen

510 / 554 p.92%
Interactive Architecture PreviewVerified Production Stack

Bookstore Application

OCS Book

In development

Application Project

An upcoming book application currently in development.

Book ApplicationIn Development
www.hungrytop.com
Client Identity
Hungry Top Technologies • Corporate Portal
Kolkata, WB • Global
Premier Software Company in Kolkata

Enterprise Products & Digital Transformation Services

Global Clients

Combining deep engineering experience, artificial intelligence, and cloud-native architecture to build high-performance products that solve real-world industry challenges worldwide.

Enterprise

Product Engineering

Applied AI

Intelligent Workflows

Cloud-Native

Scalable Systems

✓ Enterprise Digital Transformation✓ AI & Cloud Architecture✓ Global Client Delivery
Interactive Architecture PreviewVerified Production Stack

Enterprise Software & Digital Transformation

Hungry Top Technologies

Lead Software Architect • Full Stack Developer

Recognized as the premier best software company in Kolkata, West Bengal, Hungry Top Technologies develops enterprise-grade software products and provides end-to-end digital transformation services worldwide. HungryTop combines deep engineering experience, artificial intelligence, and cloud-native architecture to build high-performance products that solve real-world industry challenges for global clients.

Enterprise Product DevelopmentDigital Transformation ServicesArtificial Intelligence & MLCloud-Native ArchitectureGlobal Client SolutionsKolkata Engineering CenterCorporate Inquiries & ConsultingHigh-Performance Web Portal
Visit Website
thecapitalconclave.com
Client Identity
The Capital Conclave 2026 • Kolkata Summit
14 March 2026 • 150 Senior Delegates

Curated Investor & Business Forum

Emerging Geopolitics, Trade, Capital Markets & Enterprise Growth

Bridging policy intent with real investment decisions between policymakers, bankers, corporate leaders, and global investors.

Kolkata Summit Agenda Timeline

09:30 AM — Sovereign Wealth & Tech Infra

Main Auditorium • Keynote Address

11:15 AM — Capital Allocation & Enterprise Growth

Hall B • Corporate Leaders Panel

02:00 PM — Closed Door Institutional Roundtables

Executive Lounge • 150 Curated Delegates

Official Summit Pass

VIP DELEGATE

#CC26-049
Kolkata Summit 2026Accredited ✓
Interactive Architecture PreviewVerified Production Stack

Official Summit Website & Investor Forum

The Capital Conclave

Lead Web Architect • Full Stack Developer

The official public summit website for The Capital Conclave 2026 — a curated Emerging Geopolitics, Trade, and Investor business forum scheduled to be held on 14 March 2026 in Kolkata, West Bengal. Designed to facilitate meaningful dialogue between policymakers, investors, bankers, corporate leaders, and industry professionals, interpreting fiscal announcements, assessing market sentiment, and identifying emerging opportunities shaping India's economic landscape across macroeconomic outlook, capital markets, enterprise growth, infrastructure, and regulatory transparency.

Curated 150-Delegate Forum PortalKeynote & Panel TimelinesSpeaker & Dignitary DirectoryFiscal Policy & Market ThemesDelegate Registration GatewayKolkata Summit ShowcaseSponsor & Partner TiersResponsive Luxury Design
Visit Website
thecapitalconclave.com/admin
Client Identity
The Capital Conclave • Admin Operations & Gate Control
Live Gate Scanner Active

150

Invited VIPs

138

RSVP Confirmed

112

Checked In (74%)

12

Pending RSVP

Barcode & QR ScannerCamera #01
BADGE DETECTED • #CC26-049

Dr. Anirban Mukherjee

Partner • Apex Capital

VERIFIED & ADMITTED ✓Gate 01 • 09:14 AM

Live RSVP & Gate Roster

150 Invited • 112 Admitted

Dr. Anirban Mukherjee

Apex Capital Partners

Checked In • Gate 01

09:14 AM

Shri V. Ramakrishnan

National Infra Fund

Checked In • Gate 01

09:10 AM

Ms. Priya Sengupta

Eastern FinCorp Ltd

Checked In • VIP Gate

09:05 AM

Rajeev Malhotra

Global Venture Fund

RSVP Confirmed

RSVP Confirmed

EMAIL DISPATCH: 150 Sent (99.8% Delivered)•SCAN SPEED: <42ms
Attendance Report (PDF/CSV)Auto Email Alerts ✓
Interactive Architecture PreviewVerified Production Stack

Event Operations & Access Control System

Capital Conclave Management

Event Systems Architect • Backend & Admin Developer

The mission-critical administrative control room and event operations engine governing The Capital Conclave 2026. Powers real-time barcode and QR code entry scanning at summit gates, automated transactional email dispatch for invitations and confirmations, dynamic RSVP tracking, live attendance headcount reporting, and delegate accreditation analytics.

Barcode & QR Code Gate EntryAutomated Email NotificationsReal-Time RSVP ManagementLive Attendance Headcount (150 Delegates)Invited vs Attended TelemetryInstant Scan Verification (<100ms)VIP Delegate AccreditationPDF & CSV Attendance ExportAudit Logging & Role-Based Access
Visit Admin Portal
www.utaairguns.com
Client Identity
Live interface preview of https://www.utaairguns.com/
Production Interface PreviewHigh Resolution UI

E-Commerce Inventory & Order Management System

UTA Admin & Inventory Engine

Inventory Systems Architect • Backend Developer

The internal enterprise operations and inventory control system powering United Trading Agency (UTA 1961). Features real-time multi-warehouse stock management across air rifles, pistols, and consumable ammunition, sports shooting KYC/ID verification, automated low-stock reorder triggers, order fulfillment dispatch, and wholesale pricing tier controllers for shooting clubs.

Real-Time SKU Inventory ControlMulti-Warehouse Stock TelemetryShooter KYC & License VerificationAutomated Low-Stock Reorder TriggersOrder Fulfillment & Dispatch PipelineShooting Club Wholesale Pricing TiersBatch & Serial Number TrackingInvoice & Packing Slip GeneratorRole-Based Staff Access (RBAC)
Explore System Specs

Capabilities

Built With Modern Technology

AI-first solutions, thoughtful automation, and the engineering foundations to bring them to life.

AI & automation first

INTELLIGENT WORKFLOWS

AI Automation

Bring AI into everyday workflows to reduce repetitive work and move tasks forward faster.

CONNECTED OPERATIONS

Business Automation

Connect business processes, tools, and handoffs into dependable automated systems.

AGENTS · MODELS · PRODUCTS

Agentic AI & Model Building

Build agent-driven experiences and AI model workflows around real product needs.

Frontend

AngularReactNext.jsTypeScriptJavaScriptTailwind CSS

Backend & APIs

Node.jsExpress.jsREST APIsReal-Time Systems

Database

MongoDBMongooseSQL

Cloud & Delivery

AWSDockerNGINXLinuxCI/CD

Security

OAuth2JWTMFAAuthenticationAuthorization

Architecture

System DesignAPI ArchitectureScalable ApplicationsAI Agents

Process

How I Work

  1. 01

    Discovery

    Understand the business, requirements and goals.

  2. 02

    Architecture

    Plan the technical architecture, database, APIs and application structure.

  3. 03

    Development

    Build the product using modern, maintainable technologies.

  4. 04

    Testing & Deployment

    Test, optimize and deploy the application to production.

  5. 05

    Support & Iteration

    Continue improving the product based on business requirements.

Technical Blog & Case Studies

Engineering Insights & Architecture

Technical deep dives on building scalable multi-tenant SaaS, regulated e-commerce inventory systems, freelance software architecture, and high-performance cloud platforms across India and global markets.

SaaS Architecture7 min read

Architecting Multi-Tenant SaaS Platforms in India: Lessons from Engineering PMT+

A deep dive into building modular, multi-tenant SaaS systems with real-time collaboration, role permissions, and SAP price tier controllers for startups and enterprises across Bangalore, Mumbai, and Kolkata.

↗ PMT+ Project Management Tool↗ Sandip Paul Full Stack Portfolio↗ Node.js Official Documentation
March 15, 2026
Event Engineering6 min read

High-Concurrency Event Engineering: Behind The Capital Conclave 2026 Live Barcode & RSVP Portal

How we engineered the official summit portal and executive administrative system for The Capital Conclave 2026 in Kolkata, featuring real-time QR check-in, automated email notifications, and VIP delegate tracking.

↗ The Capital Conclave 2026 Summit↗ Capital Conclave Admin Portal↗ Sandip Paul Architecture Services
March 8, 2026
Enterprise Systems5 min read

Field Operations & Workforce Certification: Inside CCS Projects & Enterprise LMS Architecture

A technical walkthrough of Cullen Cleaning Services' operational ecosystem: live team dispatch, client site checklists, and corporate LMS certification platforms.

↗ CCS Projects Management↗ CCS Academy Corporate LMS↗ Full Stack Engineer India
February 26, 2026
Data & E-Commerce6 min read

Scaling Modern E-Commerce & Statistical Data Engines: Online College Street to Lottery Dunia

Architectural patterns for catalog search indexing in Online College Street and mathematical trend analytics across thousands of draw results in Lottery Dunia and Lottery Target DEAR.

↗ Online College Street E-Commerce↗ Lottery Dunia Analytics↗ Lottery Target DEAR on Google Play
February 12, 2026
E-Commerce & Inventory8 min read

Engineering High-Compliance E-Commerce & Real-Time Warehouse Inventory Systems: Inside UTA Air Guns (Est. 1961)

A deep architectural breakdown of building a high-compliance sports air gun e-commerce platform and multi-warehouse inventory engine for United Trading Agency (est. 1961 in Kolkata), featuring KYC verification, atomic SKU reservations, and SEO leadership.

↗ United Trading Agency (UTA Air Guns)↗ Precision Sports Air Rifles & Pistols India↗ Sandip Paul Full Stack Architecture
March 28, 2026
Freelance Architecture & CTO9 min read

Why High-Growth Startups & Enterprises Hire a Senior Freelance Software Architect: The Pragmatic Scaling Blueprint

How partnering directly with an experienced freelance full stack developer and cloud architect provides startups and businesses in India, the US, and Europe with senior technical leadership, 3x faster delivery, and massive cost savings compared to traditional agencies.

↗ Sandip Paul — Senior Freelance Software Architect↗ Production Enterprise Case Studies↗ Hire Freelance Developer for Contract or MVP
April 2, 2026
Web Performance & SEO7 min read

Full-Stack SEO & Core Web Vitals Mastery: How Engineers Build 99+ Lighthouse Grade Applications

A technical blueprint for software engineers on combining JSON-LD knowledge graphs, SSR hydration strategies, font layout stabilization, and sub-50ms TTFB to dominate organic search rankings.

↗ Freelance Full Stack Development & Technical SEO↗ Online College Street Academic Portal↗ The Capital Conclave 2026
April 8, 2026

Why work with me

More Than Just Development

01

Business Understanding

Build around actual business requirements, not just technical specifications.

02

Architecture First

Think about scalability, maintainability, security and deployment before writing large amounts of code.

03

Full Stack Capability

Frontend, backend, database, APIs and cloud deployment under one development workflow.

04

Product Mindset

Focus on creating software that solves a real business problem.

About

About Sandip

Software DeveloperFull Stack EngineerSoftware ArchitectProject Lead
Sandip Paul Portrait✓
Sandip PaulFullstack AWS Architect

Architect · Build · Deploy · Scale

Kolkata, India • Specialized in modern cloud architectures, high-load systems & AI products.

I'm a software engineer based in Kolkata, India, working across the full stack — from planning system architecture to shipping and running applications in production. I've led and built SaaS products, REST APIs, real-time systems, e-commerce platforms, learning management systems and government financial management systems, and deployed them on cloud infrastructure.

I care about understanding the business problem first, then designing software that stays maintainable as it grows.

Let's Build It View Resume (Drive)

Professional Experience

The Tech Clouds (TTC)

Software Engineer

05/2025 – Present

National Informatics Control India

Software Engineer

01/2025 – 05/2025

Hungry Top Technologies Limited

Software Developer

12/2022 – 12/2024

Education

B.Tech — Computer Science & Engineering

GPA 9.04 / 10

Direct Contact

Have a project in mind?

No lengthy contact forms or automated queues. Reach out to me directly via WhatsApp, direct phone call, or email to discuss your product requirements, architecture, and timeline.

FASTEST RESPONSE

Chat on WhatsApp

+91 7318886644

Instant messaging for project scoping, rapid questions, and quick kickoff calls.

Open WhatsApp Chat
DIRECT CONSULTATION

Direct Phone Call

+91 7318886644

Direct line for real-time discussion on product architecture, scope, and engineering timelines.

Call Directly
DETAILED RFPS & SPECS

Direct Email

sandippaul7318@gmail.com

Send technical briefs, Figma design links, project scopes, or detailed architecture inquiries.

Send Direct Email
Kolkata, West Bengal, India
Quick Response (Typically < 2 Hours)
Available for Freelance Projects & Contracts
LinkedIn Profile