Home / Tech Stack

Modern, proven, production-grade

We pick mainstream, well-supported technology so the platforms we build are easy to hire for, easy to scale and easy to hand over. Here's exactly what runs our two live products.

VahanSpace

A containerised, horizontally scalable platform: a Python API, a React web app, a React Native Android app, and supporting services for caching, messaging and monitoring.

415+ API endpoints6 user rolesWeb + AndroidKubernetes-ready

Clients

Web appReact 18 · MUI

Android appReact Native · Expo

↓ HTTPS · JWT

FastAPI serviceREST API · Pydantic v2

↓

MySQL 8SQLAlchemy

Redis 7Cache

RabbitMQWorker

S3Media

Web frontend	React 18ViteMaterial UI 6ZustandReact RouterAxios Single-page app covering buyers, dealers, service providers and admin.
Mobile	React Native 0.85Expo SDK 56React Navigation 7Expo NotificationsSecure StoreSpeech recognition Android app with push notifications, camera and document upload, location and voice input.
Backend	PythonFastAPIPydantic v2SQLAlchemy 2.0AlembicUvicorn Modular REST routers with typed request / response models and versioned migrations.
Data & messaging	MySQL 8Redis 7RabbitMQS3-compatible storage Caching, asynchronous notification fan-out through a worker, and object storage on AWS S3, DigitalOcean Spaces or MinIO.
Documents & AI	WeasyPrintReportLabpdfplumberopenpyxlOpenCVONNX Runtime PDF agreements and reports, PDF / Excel price-list parsing, number-plate masking and on-device image moderation — no external AI calls for moderation.
Security	JWT access + refreshOAuth2bcryptRole-based accessVAPT framework Per-role authorisation on every endpoint and an in-house, guardrailed vulnerability-assessment framework.
DevOps	Docker ComposeKubernetes (HPA, Ingress)GitHub ActionsPrometheusGrafanaEAS Build CI tests, image builds and deploys; autoscaling in Kubernetes; metrics dashboards; Android release builds via Expo EAS.
Testing	pytestVitestTesting LibraryMSWJestE2E suite

Kortex HMS

A TypeScript monorepo — API, web app and a shared domain package — so GST, pricing and validation rules are written once and used on both sides.

Multi-tenant SaaS9 staff rolesGST-compliantSingle-server deploy

Clients

Staff web appReact 19 · Vite

Guest QR menuNo app, no login

Aggregator feedIntake webhook

↓ HTTPS · httpOnly cookie

Express 5 APITypeScript · Zod

@kortex/sharedDomain rules

↓

PostgreSQL 17Prisma 6 ORM

Web frontend	React 19Vite 7TypeScriptTanStack QueryReact Router 7QR code generation Role-aware navigation — each staff member lands on the screens their role allows.
Backend	Node.js 22Express 5TypeScriptZod 4Pino loggingNodemailer Typed, validated REST API with transactional billing — settling a bill raises the invoice and depletes stock in one transaction.
Database	PostgreSQL 17Prisma 6Prisma Migrate Tenant isolation per property, full audit trail and repeatable migrations.
Shared domain	@kortex/sharedGST engineOffers enginePayroll rules CGST / SGST / IGST by place of supply, HSN / SAC, PF / ESI / PT — one tested source of truth.
Security	JOSE / JWTHelmetRate limitingCORSStrict CSPRBAC Hardened HTTP headers, throttled auth endpoints and role checks on every route.
DevOps	Docker ComposePM2GitHub ActionsOffline install package One-command deploys to a single server, plus a packaged installer for sites without registry access.
Quality	VitestSupertestESLintPrettierTypecheck in CI Domain unit tests plus API integration tests against a real PostgreSQL database.

Engineering practices

What every project gets

Typed end to end

Pydantic and TypeScript + Zod catch errors before they reach users.

Automated tests

Unit, integration and end-to-end suites run on every change.

Security reviews

Role-based access and VAPT assessments before go-live.

Containerised

Same Docker images from laptop to production.

Want this stack behind your product?

We'll recommend an architecture that fits your scale, team and budget.

Talk to our CTO →