Hello, I'm Rajnish.

Full-Stack Architect
Digital Excellence

Specializing in React Native, Next.js, Go, and Node.js to create event-driven microservices and cross-platform applications.

View My Work Download CV
Profile

Beyond the
Code

Software Engineer specializing in React Native, Next.js, Go, and Node.js, building scalable fintech platforms, event-driven microservices, and cross-platform applications. Experienced in monorepo architectures and distributed systems. I design systems that are not only performant but also maintainable and secure.

I believe that great software is born from the intersection of clean code, intuitive design, and user-centric thinking. When I'm not architecting systems, you can find me contributing to open-source or exploring the latest in AI technologies.

4+

Years Experience

20+

Projects Launched

Technical Arsenal

A curated suite of tools and technologies I use to build world-class digital products.

Frontend

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
  • NextUI
  • Styled Components

Mobile

  • React Native
  • Zustand
  • TanStack Query
  • Reanimated
  • MMKV

Backend

  • Go (Gin)
  • Node.js
  • NestJS
  • GraphQL
  • gRPC
  • RabbitMQ

Database

  • PostgreSQL
  • Redis
  • Prisma
  • SQL
  • MongoDB

DevOps

  • Docker
  • Kubernetes
  • Nx Monorepo
  • CI/CD
  • Sentry

Career Journey

Over 4 years of experience building scalable products and leading engineering initiatives.

2024 - Present

Full-Stack / Mobile Engineer

DisruptTech (FinTech)

  • Architected a React Native fintech application for wallets, card management, and user onboarding.
  • Implemented mobile state management using Zustand and TanStack Query for real-time data sync.
  • Built secure mobile authentication flows including biometric login, 2FA, and session security controls.
  • Designed event-driven microservices using Go, RabbitMQ, and gRPC to power mobile and web clients.
  • Built multi-tenant whitelabel infrastructure for rapid deployment of branded fintech products.
2023 - 2024

Frontend Developer

Ramaera Industries Limited

  • Built and maintained the main company website using Next.js, GraphQL, Redux Toolkit, and Styled Components.
  • Developed PlanetSera web platform and React Native rewards app.
  • Implemented KYC user portal and admin dashboard with document verification workflows.

Selected Work

Showcasing architectures and products that define my journey in building scalable fintech systems and cross-platform applications.

Fypto Mobile App

Fypto Mobile App

FEATURED

Cross-platform fintech mobile app for wallets, card lifecycle management, and real-time transactions with biometric auth.

React NativeTypeScriptZustandTanStack Query
Cloud-Native FinTech Platform

Cloud-Native FinTech Platform

FEATURED

Multi-service fintech monorepo with 7+ microservices for wallets, cards, payments, and KYC using event-driven architecture.

GoNode.jsNxPostgreSQLRabbitMQ
White-Label Platform Core

White-Label Platform Core

Multi-tenant backend for branded platforms with tenant-level business logic and automated fee/commission engines.

NestJSPrismaGraphQLNext.js
Enterprise Dashboards

Enterprise Dashboards

High-performance dashboards for KYC approvals and financial monitoring with server-side pagination.

Next.jsGraphQLTanStack Table
Explore on Github

Let's build
something extraordinary.

I'm currently open to new opportunities for senior roles and impactful freelance collaborations.

Email Me

[email protected]

Based In

India / Remote