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.

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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

ENGINEERING STACK

Technical Arsenal

A focused stack for building production-grade web, mobile, and distributed systems.

Categories

5

Tools

27

01

Frontend

6 core tools

ReactNext.jsTypeScriptTailwind CSSNextUIStyled Components
02

Mobile

5 core tools

React NativeZustandTanStack QueryReanimatedMMKV
03

Backend

6 core tools

Go (Gin)Node.jsNestJSGraphQLgRPCRabbitMQ
04

Database

5 core tools

PostgreSQLRedisPrismaSQLMongoDB
05

DevOps

5 core tools

DockerKubernetesNx MonorepoCI/CDSentry
PROFESSIONAL PATH

Career Journey

Building scalable fintech and platform products across mobile, web, and backend systems.

Experience

4+ yrs

Roles

2

2024 - Present

Full-Stack / Mobile Engineer

DisruptTech (FinTech)

01
  • 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

02
  • 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
rp-blog

rp-blog

FEATURED

Full-stack blogging platform with Google authentication, private/public post visibility, markdown editor with live preview, voting, comments, and searchable infinite public feed.

Next.jsTypeScriptNextAuthPostgreSQLDrizzle ORMZustand
rp-paste

rp-paste

FEATURED

Minimal Pastebin-style app that turns large text into short share links, enforces a 100KB size limit, auto-copies generated URLs, and serves raw paste content at `/p/[id]` with preserved formatting.

Next.jsTypeScriptPostgreSQLDrizzle ORMTailwind CSS
rp-linked

rp-linked

FEATURED

URL shortener supporting custom slugs and auto-generated slugs, strict URL/slug validation, reusable short links for existing targets, and fast 302 redirect routing from `/{slug}`.

Next.jsTypeScriptPostgreSQLDrizzle ORMNanoIDTailwind CSS
TOTP Generator

TOTP Generator

FEATURED

Custom TOTP dashboard with QR preview, editable secrets, choice of digits, time window, and algorithm, plus automatic progress timing and clipboard copy-toasts.

Next.jsTypeScriptTailwind CSStotp-generatorCustom UI Kit
Explore on Github
LET'S CONNECT

Let's build
something great

Open to senior engineering roles and focused freelance projects. If you have a product challenge, I can help ship it.

Email

[email protected]

Location

India / Remote

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CONTACT