[ OK ]BOOTED: v2.1.0-vanilla-ice-cream

Hi, I'm Vanshraj SinghMobile App & Kotlin Native Developerwith expertise in Java Spring Boot & Cloud

Passionate software developer focused on building clean, high-performance mobile apps and scalable backend microservices. Proven problem solver with 250+ LeetCode problems solved (1465 contest rating) and a Top 50 rank in the IIIT Bangalore CTF, dedicated to mastering SOLID principles, modern architecture, and low-latency systems.

250+LeetCode Solved
1465LeetCode Rating
Top 50IIIT Bangalore CTF
Quick Shell Commands:
Live Android Emulator View:
09:41
120Hz98%

SocialMedia App

Flutter • Riverpod 2 • Supabase
@singhvanshrajLIVE REEL
0:15 • 1080p (Compressed)
⚡ -74% Payload

Real-Time Chat App

Socket.IO • MongoDB • JWT
ONLINE
Vanshraj's Bot

Hey! WebSocket duplex channel is active. Latency is < 18ms.

root@system:/system/bin/adb

Interactive ADB Developer Shell

Type commands or click quick-action pills below to inspect live device properties, stream logcat diagnostics, and explore system metrics.

adb shell — pixel_9_pro_api35 (pts/0)
Presets:
   ___   ___  ___    ____  __  ________   __ 
  / _ | / _ \/ _ )  / __/ / / / / __/ /  / / 
 / __ |/ // / _  | _\ \  / _ \/ _// /__/ /__ 
/_/ |_/____/____/ /___/ /_//_/___/____/____/ 
          

Android Debug Bridge version 1.0.41 (API 35)

Target: pixel_9_pro_api35 | Kernel: 6.1.75-android-arm64

Connected stack: Kotlin Multiplatform + Java Spring Boot 3

Type help to view all commands, or click any preset above.

vsh@android:/data/local/tmp$
adb shellcat /sys/kernel/skills_matrix

Core Technology & Language Stack

Engineered with official brand aesthetics, low-level native performance, and enterprise-grade backend stability. Click any skill card to inspect live code snippets.

mobile

Kotlin

Modern Android UI with Jetpack Compose, Coroutines, StateFlow, and Kotlin Multiplatform logic.

Proficiency92%
CoroutinesComposeStateFlowRoom
Inspect Source Code
mobile

Flutter

Cross-platform mobile apps with Riverpod state management, custom animations, and Impeller engine.

Proficiency90%
RiverpodImpellerWidgetsCustom Painters
Inspect Source Code
mobile

Android NDK / JNI

C/C++ native interop, low-level platform channels, and memory-managed native arenas.

Proficiency80%
JNINDKC++ InteropMemory Arenas
Inspect Source Code
mobile

Jetpack Compose

Declarative UI engineering with state hoisting, custom layouts, and Side-Effects handling.

Proficiency92%
Declarative UIState HoistingCanvasRecomposition
Inspect Source Code
mobile

Dart

Strongly typed asynchronous programming, records, pattern matching, and isolates concurrency.

Proficiency88%
AsynchronousPattern MatchingIsolatesSound Null Safety
Inspect Source Code
backend

Java

Concurrent backend development using Virtual Threads (Project Loom), OOP design, and JVM profiling.

Proficiency88%
Virtual ThreadsOOPConcurrencyJVM
Inspect Source Code
backend

Spring Boot

MVC enterprise REST APIs, Spring Security, JPA/Hibernate repositories, and microservice architectures.

Proficiency85%
MVCREST APISpring SecurityJPA
Inspect Source Code
backend

Socket.IO / WebSockets

Full-duplex real-time communication channels, heartbeat signals, and multi-node event broadcasting.

Proficiency86%
DuplexWebSocketsEventsReal-Time
Inspect Source Code
backend

REST APIs & JWT

Stateless security architecture using signed JSON Web Tokens, refresh token rotation, and OAuth2 integration.

Proficiency88%
RESTJWTSecurityOAuth2
Inspect Source Code
database

PostgreSQL

ACID transactions, relational schema design, B-tree index optimization, and connection pooling with HikariCP.

Proficiency88%
PostgreSQLSQLIndexingACIDHikariCP
Inspect Source Code
database

Supabase Realtime

PostgreSQL change data capture, Row Level Security (RLS) policies, Edge Functions, and low-latency webhook streams.

Proficiency86%
SupabasePostgres WebhooksRLSRealtimeStorage
Inspect Source Code
database

Firebase & Cloud

Cloud Firestore NoSQL, Firebase Auth with OAuth2 tokens, Cloud Functions, and FCM push notifications.

Proficiency85%
FirestoreFirebase AuthCloud FunctionsFCM
Inspect Source Code
database

MongoDB

NoSQL document persistence, sharding, aggregation pipelines, and reactive MongoDB drivers.

Proficiency82%
NoSQLDocument StoreAggregationSpring Data
Inspect Source Code
systems

C & Systems

Low-level manual memory allocation, pointer manipulation, and POSIX system call integrations.

Proficiency80%
PointersPOSIXMemory ManagementC17
Inspect Source Code
systems

Linux & Bash

Shell scripting, process management, ADB daemon operations, and kernel profiler diagnostics.

Proficiency88%
BashLinux CLIADB AutomationShell
Inspect Source Code
systems

Security & Reverse Eng

System vulnerability analysis, CTF challenges, binary inspection, and secure code practices.

Proficiency84%
CTF Top 50GhidraCryptographyNetwork Packet Analysis
Inspect Source Code
pm list packages/data/app/featured_modules

Production Apps & Systems

Engineered with Kotlin Native, Flutter Impeller, and Java Spring Boot architectures. Verified on modern Android hardware and cloud runtimes.

Flutter & Supabase Realtime★ FLAGSHIP
com.singhvanshraj.socialmedia

High-Performance Social Media App

High-performance video stream platform with dynamic camera compression and sub-20ms database sync.

ARCH:MVVM & Service-based Architecture with Riverpod 2
  • Client-side video frame compression reducing payload size by 74%
  • Real-time post sync using Supabase PostgreSQL webhooks
  • Vulkan-accelerated 120 FPS Flutter Impeller rendering
-74%Payload Reduced
120 FPSImpeller Render
<20msSync Latency
FlutterDartRiverpodSupabase
$am start -n com.singhvanshraj.socialmedia/.MainActivity
Express.js & Socket.IO Backend★ FLAGSHIP
com.singhvanshraj.chatapp

Full-Duplex Real-Time Chat Application

Ultra low-latency messaging engine using Socket.IO duplex channels and indexed MongoDB persistence.

ARCH:Clean Architecture & Repository Pattern
  • Event-driven non-blocking I/O powered by Node.js Event Loop (libuv)
  • Full-duplex WebSocket transmission with sub-18ms message delivery
  • JWT-based security authentication with automatic session recovery
<18msDuplex Latency
10k+Active Sockets
JWTAuth Protection
Node.jsExpress.jsSocket.IOMongoDBFlutter
$am start -n com.singhvanshraj.chatapp/.MainActivity
dumpsysprofile --design-patterns --solid

System Architecture & Design Patterns

Scalable mobile and backend architecture based on clean code practices, SOLID principles, MVVM/MVC presentation patterns, and creational design patterns.

⬡ Pattern-Driven Software ArchitectureMVVM • MVC • SOLID
L1MVVM Presentation Layer (Client)
Jetpack Compose ViewViewModel (StateFlow)Flutter Riverpod / BSoD
Single Responsibility & Dependency Inversion (SOLID)
L2Domain & Creational Patterns
Factory Method PatternBuilder PatternDependency Injection (Hilt/Koin)
Open-Closed & Interface Segregation (SOLID)
L3MVC Service Layer (Spring Boot)
REST Controller (View/Controller)Service Layer (Model Logic)Singleton Beans
Liskov Substitution & Repository Pattern
L4Data Access & Persistence
HikariCP Singleton PoolPostgreSQL Data Source FactoryMongoDB DAO Layer
dumpsys architecture • Pattern Metrics
SOLID ACTIVE
MVVM & MVC Coupling IndexLoose Coupling (0.02)
MVVM UI States MVC Controllers DI Factories
Creational Patterns in Use5 Active Patterns
SingletonDbPool / Beans
Factory MethodNetwork Clients
BuilderPayloads & DTOs
SOLID Principle Adherence100% Compliant
  • Single Responsibility: Isolated ViewModels & Controllers
  • Open/Closed: Extensible Strategy-based Repositories
  • Liskov Substitution: Swappable Interface Implementations
  • Interface Segregation: Fine-grained Contract Interfaces
  • Dependency Inversion: Injected Abstractions via DI
adb logcat-v threadtime CareerTimeline:V

Milestones & Experience Logcat

Chronological log buffer of engineering leadership, native mobile app deployments, and distributed enterprise backends.

logcat buffer • /dev/log/career_trace
BUFFER: 4 ENTRIES
[INFO] DSA_ALGORITHMSProblem Solving
LeetCode Competitive Programming

250+ Solved & 1465 Contest Rating

Solved 250+ data structures & algorithmic problems focusing on time/space complexity optimization, dynamic programming, trees, graphs, and two-pointer techniques.

STACK:Data StructuresAlgorithmsJava
[INFO] CTF_SECURITY_RANKCompetitive Milestone
IIIT Bangalore CTF

Secured Top 50 Rank

Competed against top collegiate talent, analyzing vulnerabilities and solving complex security challenges across Reverse Engineering, Web Exploitation, Cryptography, and Linux Systems.

STACK:Reverse EngineeringWeb SecurityCryptographyLinux CLI
[DEBUG] ARCHITECTURE_BUILDCurrent Focus
Self-Directed Engineering

Full-Stack & Mobile Developer

Architecting end-to-end fullstack applications with Jetpack Compose, Flutter, and Java Spring Boot. Strict adherence to SOLID principles, MVVM/MVC presentation patterns, and clean code practices.

STACK:KotlinJetpack ComposeSpring BootPostgreSQL
[VERBOSE] INIT_BOOTFoundations
Computer Science Study

Systems & Core CS Concepts

Gained hands-on proficiency in low-level memory concepts, data structures, relational database normalization, and object-oriented design patterns using C, Java, and Linux environments.

STACK:CJavaLinuxBashSQL
nc -lvp 443/dev/socket/contact_daemon

Open Developer Socket

Broadcast an intent or initiate a direct communication socket for Flutter mobile apps, Kotlin architecture, or Spring Boot microservices.

socket transmit • TCP/IP Handshake
PORT: 8080

Direct Transmission Nodes

Immediate response via email or instant developer messaging:

AVAILABILITY STATUSReady for Native Mobile, Flutter & Spring Boot Roles