Skip to main content
RajannaTechnologies Solo Studio
Independent Software Development Company· Specialized .NET, Android & Angular Solutions

Production Software & Mobile Apps Built with Precision Engineering.

We are RajannaTechnologies, an independent software development studio focused on building innovative, reliable, and user-friendly digital solutions. Founded and led by Chandrashekhar, specializing in Microsoft .NET architectures, relational databases, Angular web systems, and native Android application engineering.

ASP.NET Core MVC & Web APIMicrosoft SQL ServerAngularFlutterAndroid Application Development
Explore Published Android AppsDiscuss a Custom Solution

Direct Founder Engineering

Zero agency bureaucracy or miscommunication. Work directly with Chandrashekhar, writing your architecture, database, and code.

End-to-End Delivery

Complete technical ownership: from database schema normalization and REST API endpoints to frontend SPAs and Google Play releases.

.NET & Database Reliability

Proven design patterns with Microsoft SQL Server, ASP.NET Core, and native Android built for long-term maintainability.

About Us

An Independent Software Studio Built with Craft & Accountability

We are RajannaTechnologies, an independent software development company founded and operated by Chandrashekhar, specializing in full-stack .NET development, database architecture, and native mobile applications.

In an industry full of sprawling agencies with high overhead and junior developers rotating between accounts, RajannaTechnologies offers a refreshing alternative: direct, expert craftsmanship.

Every line of C#, SQL, Kotlin, and TypeScript is written, reviewed, and maintained by the same dedicated engineer, Chandrashekhar. Our focus is centered on the robust Microsoft .NET ecosystem—designing resilient ASP.NET Core Web APIs and MVC architectures, structuring normalized Microsoft SQL Server databases, and shipping native Android mobile applications to the Google Play Store.

Whether you need a full-scale web application, an offline-first Android tool, or specialized database optimization, we bring deep technical rigour, transparency, and end-to-end execution.

Clean Architecture

Strict separation of concerns, SOLID principles, and readable codebases designed for longevity rather than quick shortcuts.

Database Integrity

Deep respect for relational schemas, ACID transactions, stored procedures, and indexing on Microsoft SQL Server.

Native Mobile Polish

Android applications developed with native performance, offline persistence (Room/SQLite), and Google Play compliance.

Transparent Partnership

Direct communication with Chandrashekhar. Honest estimates, clear progress updates, and zero sales jargon.

Chandrashekhar

Lead Software Engineer & Founder

Specialized .NET & Mobile Engineer

Company:RajannaTechnologies
Business Model:Independent Studio (Solo Developer)
Core Focus:Full-Stack & Native Android (.NET, MSSQL, Angular)
Primary Ecosystems:ASP.NET Core, MSSQL, Angular, Android
Current Status: Accepting New Projects & Contracts
Direct Developer Email
rajannatechnologies@outlook.com
Initiate Direct Consultation
Our Services

Specialized Software Engineering Services

Targeted technical capabilities designed to solve complex challenges. Built from the ground up with high code quality, clean architecture, and modern best practices by RajannaTechnologies.

Android App Development

Native Android mobile applications engineered for fluid performance, low memory footprint, and Google Play Store compliance.

Key Capabilities

  • Offline-first mobile architecture with local SQLite persistence
  • Google Play Store publishing, compliance & asset preparation
  • Material 3 design system with custom light/dark theme adaptation
  • Background services, push notifications & battery-conscious tasks
  • Hardware integration: Camera, GPS, Bluetooth & Local PDF generation
Android SDK Kotlin Jetpack Compose Room Database WorkManager Coroutines
Inquire about Android App Development

Web Application Development

Modern, performant single-page applications and responsive web systems built with Angular and robust backends.

Key Capabilities

  • Zoneless Angular single-page applications with reactive signals
  • Modular state management and fast client-side rendering
  • Mobile-first, responsive layouts accessible across all viewports
  • Secure token-based authorization and granular role views
  • Data-dense dashboards with interactive filtering and exports
Angular TypeScript Tailwind CSS RxJS Signals HTML5/CSS3
Inquire about Web Application Development

Custom Software Development

Tailored software solutions engineered with ASP.NET Core MVC to streamline specific operational workflows.

Key Capabilities

  • Custom business workflow automation and internal management portals
  • Enterprise MVC patterns adhering to SOLID engineering standards
  • Automated PDF reporting, invoice batching, and document pipelines
  • Clean separation of domain entities, repositories, and presentation
  • Containerized deployments ready for on-premise or cloud hosting
ASP.NET Core MVC C# .NET 8+ Entity Framework Core Razor Docker
Inquire about Custom Software Development

API Development & Integration

Secure, high-throughput RESTful Web APIs connecting web, mobile, and third-party services reliably.

Key Capabilities

  • Contract-first RESTful endpoint design with OpenAPI/Swagger specs
  • High-throughput JSON serialization with minimal memory allocations
  • JWT and API Key authentication with claims-based access control
  • Webhook listeners with idempotent payload processing
  • Integration with payment gateways, SMS providers, and external services
ASP.NET Core Web API C# REST JWT / OAuth2 Swagger/OpenAPI Postman
Inquire about API Development & Integration

Database Design & Management

Relational database modeling, query tuning, and schema migration on Microsoft SQL Server.

Key Capabilities

  • Normalized relational schema design ensuring ACID transaction safety
  • Complex T-SQL stored procedures, functions, and audit triggers
  • Index optimization, execution plan analysis, and query tuning
  • Database versioning, backup automation, and recovery planning
  • Efficient data access layers utilizing Entity Framework Core and Dapper
Microsoft SQL Server T-SQL Stored Procedures SSMS Indexes Database Backups
Inquire about Database Design & Management

Cross-Platform Mobile App Development

Multi-platform applications built with Flutter to deliver unified codebases across mobile operating systems.

Key Capabilities

  • Unified UI codebase for iOS and Android deployment
  • Smooth 60/120fps hardware-accelerated animations
  • Offline caching and asynchronous cloud API synchronization
  • Cross-platform responsive design across tablets and smartphones
  • Reduced time-to-market for multi-platform product launches
Flutter Dart Material Design Cupertino REST Client SQLite
Inquire about Cross-Platform Mobile App Development
Successfully Published

Our Published Android Applications

Native Android software published to the Google Play Store by RajannaTechnologies. Engineered for performance, battery efficiency, offline data storage, and intuitive user experiences.

Google Play Developer Profile
Google Play Published v2.4.1 · Released 2024

HabitPulse Pro - Daily Routine & Habit Tracker

Offline-first habit formation & progress metrics

A focused Android utility engineered for individuals looking to cultivate positive daily routines. Designed strictly with offline-first local storage, zero third-party telemetry, lightweight background alarms, and Material 3 design principles.

Highlighted App Capabilities

  • Offline-first architecture with Android Room SQLite DB
  • ExactAlarm scheduler for timely unobtrusive local reminders
  • Interactive streak visualization and completion percentages
  • Lightweight APK footprint under 6MB with zero bloatware
  • Automated encrypted local backups and CSV export

Engineering Stack

Android SDK Kotlin Jetpack Compose Room DB Coroutines & Flow WorkManager
GET IT ONGoogle Play
Android 14+
HabitPulse Pro
Active UI
Habit DashboardDaily View

Daily habit cards with one-tap completion and active streak counters.

Weekly AnalyticsMetrics

Heatmaps and completion rate charts generated entirely on-device.

Alarm SettingsBackground Jobs

Fine-grained reminder intervals respecting Android 14+ Doze modes.

Google Play Published v1.8.0 · Released 2023

QuickInvoice - Offline Billing & Receipt Generator

On-device invoicing and tax PDF generator for small vendors

Built for freelance tradespeople and local merchants who need instantaneous PDF invoices without mandatory cloud accounts. Supports automated itemized calculations, client address books, custom tax breakdowns, and instant PDF vector generation.

Highlighted App Capabilities

  • Instant offline PDF vector rendering with customizable color accents
  • Client ledger with contact auto-fill and payment status tracking
  • Comprehensive multi-currency and localized tax rate calculations
  • Direct document sharing via Android Sharesheet (Email, WhatsApp, Print)
  • Zero account lock-in; full data ownership

Engineering Stack

Android SDK Kotlin Jetpack Navigation Room Database PdfDocument API Material Components
GET IT ONGoogle Play
Android 14+
QuickInvoice
Active UI
Invoice BuilderEditor

Line-item entry with automatic subtotal, discount, and tax calculations.

PDF Live PreviewExport

Vector-sharp preview rendered before printing or dispatching to clients.

Client HistoryLedger

Chronological ledger summarizing settled and outstanding customer balances.

Roadmap & Pipelines

Upcoming Projects Under Development

In our commitment to full transparency as an independent software studio, these projects are currently in active design, prototyping, or private alpha staging by RajannaTechnologies.

Release Candidate (v1.0.0) Target: Q4 2026

Denomination & Money Manager

Android (Flutter) - API Level 36

A 100% offline, privacy-first physical currency counting utility and personal cash ledger designed to eliminate cashier counting errors and automate banking deposit slips.

Planned Capabilities

  • Real-time physical note & coin denomination totaling
  • Multi-language automated numerical amount-to-words generator for bank slips
  • Zero-cloud local encrypted storage with complete privacy isolation
  • Two-way Excel (.xlsx) transaction report import and export
  • Floating draggable overlay calculator with quick-add launch shortcut
  • Interactive daily, weekly, monthly, and yearly cash flow visual charts
Flutter Dart Hive DB Android SDK 36 Material Design 3
Inquire / Request Early Access
Direct Communication

Contact RajannaTechnologies & Start a Conversation

Have a project in mind, need an Android mobile app, or require reliable .NET/SQL architecture? Get in touch directly with Chandrashekhar.

Primary Direct Email
rajannatechnologies@outlook.com

Direct & Fast Response

All inquiries are reviewed personally by Chandrashekhar. Expect a reply within 24 business hours.

No Sales Intermediaries

Discuss requirements directly with the technical architect and developer.

Flexible Engagement Models

Available for fixed-price milestones, dedicated hourly contracts, or technical advisory.

Developer Profiles & Stores
Google Play ConsoleGitHub Profile

Send a Direct Project Inquiry

Fill in the project details below to deliver an inquiry directly to Chandrashekhar.

Direct inquiry delivery to: rajannatechnologies@outlook.com
Prefer sending via your email client?