Tech Stack

Engineering
Done Right.

Python backend. TypeScript frontend. AI woven through.

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Same foundational stack as Instagram, Pinterest, and Eventbrite.

Django
PostgreSQL
React Native
AWS
OpenAI

Technical Due Diligence Summary

A dense, skimmable view of the stack, operational posture, and architectural choices. Written for your CTO, technical advisor, or the AI they run this page through.

Core Stack

  • Backend: Django 5.2 LTS (security support through April 2028), Django REST Framework, Python 3.12
  • Content management: Wagtail 7 (Django-native CMS for marketing content, structured pages, and editorial workflows)
  • Database: PostgreSQL 16 with PostGIS and pgVector extensions
  • Cache and queue: Redis 7, Celery 5.4 workers behind Nginx
  • Frontend: React 19, Next.js 16, TypeScript 5, Tailwind CSS
  • Mobile: React Native 0.74 with Expo (iOS and Android from one codebase)
  • Infrastructure: AWS (EC2, S3, CloudFront, RDS), Docker, GitHub Actions, Cloudflare

Scale and Performance

  • 99.9% availability target with AWS multi-AZ deployment and auto-scaling
  • Stateless application tier with horizontal scaling behind Gunicorn/Uvicorn and Nginx
  • Redis caching and Celery async workers isolate long-running jobs from the request path
  • PostgreSQL 16 with indexed QuerySets, Subquery annotations, and read-replica ready
  • CloudFront CDN plus Cloudflare edge for global low-latency delivery
  • Pre-computed 15-minute timeline aggregates for dashboard responsiveness under load

Security Posture

  • TLS 1.3 in transit, AES-256 field-level encryption at rest
  • Token-based API authentication, Redis-backed session management, SSO support
  • Multi-tier RBAC with field-level and object-level permissions, custom groups
  • Immutable audit logs capturing user, timestamp, and before/after state on every change
  • OWASP Top 10 aligned practices, automated SAST and dependency scanning on every PR
  • SOC 2 and GDPR aligned controls, data residency supported per deployment

Operational Maturity

  • Automated CI/CD via GitHub Actions with staging validation before production
  • Blue-green deployments for zero-downtime releases and instant rollback on error-rate spikes
  • Backwards-compatible database migrations, hundreds of reversible migrations managed safely
  • Daily automated backups with point-in-time recovery (PITR) and cross-region replication
  • OpenTelemetry-compatible observability: structured logs, metrics, traces, and alerting
  • Feature flags for progressive rollouts and per-tenant configuration

Portability and Data Ownership

  • Your data is yours: export anytime in open formats (CSV, JSON, SQL dump)
  • PostgreSQL dumps and REST APIs mean no proprietary formats holding you hostage
  • Open-source core stack means any qualified Python/React team can operate it
  • Standard AWS infrastructure with Terraform-ready patterns for portability
  • Multi-tenant SaaS architecture with a framework/project split keeps your deployment stable as the platform evolves

Why This Stack

  • Django 5.2 LTS: locked to a Long-Term Support release with security fixes through April 2028, so no surprise breaking upgrades
  • PostgreSQL 16 over MySQL: stronger concurrency, native JSON, PostGIS and pgVector in one database
  • React Native over Flutter: larger talent pool, shared JS ecosystem with web
  • Celery over custom queues: industry-standard Python task processing, Redis-backed
  • AWS over single-vendor SaaS platforms: commodity infrastructure, portable, no lock-in

Technical Deep Dive

Stack detail, layer by layer

Everything below expands the summary above: backend, frontend, data, infrastructure, workflow, security, AI, and integrations.

Backend

Python-powered backend engineered for reliability, scale, and rapid development.

1,685+Python Files
36Framework Apps
445+Database Migrations
16,900+Model Code (lines)

Django 5.2 LTS

Core Framework

High-level Python framework on the current Long-Term Support release, with ORM, admin, middleware, and security features built in. LTS means security fixes through April 2028 without forced upgrades.

Django REST Framework

API Layer

Industry-standard toolkit for building RESTful APIs with serialization, authentication, permissions, and browsable API documentation.

Django Unfold

Admin UI

Modern admin interface for Django with a clean design, sidebar navigation, and extensible dashboard widgets for managing business data.

Wagtail 7

CMS Layer

Django-native content management for marketing pages, editorial workflows, and structured content. Single deployment, no separate headless CMS service to maintain.

PostgreSQL + PostGIS

Primary Database

Enterprise-grade relational database with pgVector for AI embeddings, PostGIS for geospatial queries, and advanced indexing for performance.

Redis

Cache & Message Broker

In-memory data store for caching, session management, real-time data, and as the message broker for Celery task queues.

Celery 5.4

Task Queue

Distributed task queue for async processing including report generation, email delivery, data imports, and scheduled jobs.

Nginx

Web Server / Reverse Proxy

High-performance web server handling SSL termination, static file serving, load balancing, and reverse proxying to application servers.

Frontend and Mobile

Modern, type-safe UI across web and mobile with shared component patterns.

React 19

UI Library

Component-based architecture for building complex, interactive dashboards and data-rich interfaces with optimal rendering performance.

React Native

Mobile

Cross-platform mobile development for iOS and Android, sharing business logic with the web app while delivering native performance.

Expo

Mobile Platform

Streamlined React Native development with managed workflows, over-the-air updates, and built-in access to native device APIs without ejecting.

Next.js 16

Web Framework

Server-side rendering, static generation, and API routes for the marketing site and client-facing portals with excellent SEO and performance.

TypeScript

Language

Type-safe development across all frontend and mobile code, catching errors at compile time and improving developer experience with rich tooling.

Tailwind CSS

Styling

Utility-first CSS framework for rapid, consistent UI development with design tokens, responsive breakpoints, and zero unused CSS in production.

Data Architecture

A multi-layered data strategy built for performance, flexibility, and AI-readiness.

Application Layer
Django ORM + DRF Serializers
Caching Layer
Redis (sessions, queries, real-time)
Primary Database
PostgreSQL + PostGIS + pgVector
Object Storage
AWS S3 (files, media, backups)

Custom Data Models

Domain-specific models designed per client. Over 32 project models and 36 framework apps provide a rich, extensible data layer tailored to each industry.

Vector Search (pgVector)

AI-powered semantic search using PostgreSQL pgVector extension. Store and query embeddings for intelligent matching, recommendations, and natural language lookups.

Geospatial (PostGIS)

Location-aware queries for fleet tracking, delivery routing, and geo-fencing. PostGIS enables complex spatial analysis directly in the database.

Query Optimization

Custom QuerySets, Subquery annotations, and indexed aggregations for production-grade performance. Complex financial calculations run in milliseconds.

Row-Level Security

Multi-tenant data isolation with role-based access. Read-only database users, encrypted fields, and audit trails protect sensitive business data.

Versioned Migrations

445+ reversible migrations managed across environments. Schema changes are tested in staging before production with zero-downtime rollouts.

Infrastructure and DevOps

Cloud-native infrastructure built for reliability, security, and zero-downtime deployments.

AWS

EC2, S3, CloudFront, RDS

Production infrastructure on AWS with auto-scaling compute, managed databases, object storage, and global CDN for static assets.

Docker

Containerization

Containerized deployments ensuring consistent environments from development to production with reproducible builds.

GitHub Actions

CI/CD

Automated build, test, and deployment pipelines triggered on every push with staging and production environments.

Cloudflare

DNS, CDN, WAF

Edge network for DNS management, DDoS protection, web application firewall, and global content delivery.

SSL/TLS Everywhere

End-to-end encryption for all traffic with automated certificate management.

Performance Monitoring

Application performance monitoring with alerting for latency and error spikes.

Automated Backups

Daily database backups with point-in-time recovery and S3 lifecycle policies.

Blue-Green Deploys

Zero-downtime deployments with instant rollback capability for production safety.

Development Workflow

A structured, repeatable process from code to production with quality gates at every step.

01

Code

Feature branches with TypeScript, ESLint, and Prettier enforcing consistent standards across the team.

02

Test

Automated unit and integration tests run on every push. Factory-based test data with pytest and Jest.

03

Review

Pull request reviews with automated checks for security vulnerabilities, type errors, and code quality.

04

Merge

Squash merges to main with automated changelog generation and semantic versioning.

05

Deploy

Automated CI/CD pipelines build, test, and deploy to staging for validation before production release.

06

Monitor

Real-time error tracking, performance monitoring, and alerting with automated rollback on critical failures.

API-First Design

Every feature starts with a well-documented REST API. Frontend and mobile teams work in parallel against stable contracts.

Database Migrations

Schema changes are versioned and reversible. Over 445 migrations managed safely across environments.

Feature Flags

Progressive feature rollouts with server-side flags. Test in production safely without affecting all users.

Module Ownership

Clear module boundaries with defined owners inside our engineering team. The framework/project split keeps shared code stable and project code flexible.

Security and Compliance

Enterprise-grade security built into every layer, from authentication to data encryption.

Encryption at Rest and in Transit

TLS 1.3 for all API traffic, AES-256 encryption for sensitive database fields, and encrypted S3 buckets for file storage.

Deep RBAC

Multi-tier role hierarchy with Django groups, field-level and object-level permissions, and API-scoped access tokens for fine-grained authorization.

Authentication and SSO

Token-based API authentication, session management with Redis, and SSO integration support for enterprise identity providers.

Audit Logging

Every data change is tracked with user, timestamp, and before/after state. Immutable audit trails for compliance and forensic analysis.

Vulnerability Scanning

Automated dependency scanning on every build. Security-focused code reviews and OWASP-aligned development practices.

Compliance Ready

Architecture designed with data residency, access controls, and audit capabilities to support SOC 2, GDPR, and industry-specific requirements.

AI and Intelligence

AI-native architecture with vector search, LLM integration, and predictive capabilities built into the platform.

AI Embeddings with pgVector

Vector similarity search powered by pgVector in PostgreSQL, enabling semantic search, recommendations, and intelligent matching across your business data.

LLM Integration

Multi-model AI (OpenAI, Gemini, Claude) for conversational interfaces, document summarization, image generation, and brand-aware content creation.

Analytics and Forecasting

Apache Superset dashboards with rolling averages, week-over-week comparisons, and forecast cards. Custom prediction models available on request for demand, churn, or anomaly detection.

Document Intelligence

OCR and LLM-backed extraction for invoices, KYC documents, and structured forms. Available on qualifying deployments, configured per use case.

Integrations

30+ pre-built integrations across payments, cloud, communications, identity, analytics, and AI. Includes Razorpay, PayU, Stripe, AWS, Twilio, WhatsApp, Slack, Salesforce, HubSpot, OpenAI, Anthropic, Okta, and more. Custom integrations built as needed via documented REST APIs.

Razorpay

Payments

Payment processing, subscriptions, and invoicing

PhonePe

Payments

UPI-based payment collection and settlements

UPI

Payments

Direct UPI integration for ledger and settlement tracking

PayU

Payments

Online payments, EMI options, and multi-currency support

Stripe

Payments

Global payment processing and billing

AWS

Cloud

EC2, S3, Lambda, CloudFront, and security services

Tech Stack FAQ

Common questions about our technology choices, architecture, and capabilities.

What happens to our system if BizBMS shuts down?

Can we migrate off BizBMS later if we want to?

How does this compare to Salesforce, SAP, or Zoho?

Is it secure enough for BFSI, healthcare, or regulated industries?

Can my internal team take over operating the platform later?

Will it scale to tens of thousands of users?

How are deployments, rollbacks, and downtime handled?

What AI capabilities are built into the platform?

Do we own our data?

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