Barath B

Android & Systems Engineer

I build complete client-server architectures, cross-platform socket engines, and production Android applications. Creator of GCES Hostel (1,200 daily active students with distributed midnight state transitions) and ConnectLnx.

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1,200

Daily Active Users • GCES Hostel

Platforms (Android, Linux, Windows, AUR)

37.7%

Oracle Depth Ceiling (AI Research)

Automated Release Targets (CLI)

Projects

1,200 Daily Active Users Live on Google Play

GCES Hostel Operations Platform

Full-stack institutional operations platform deployed to 1,200 active residential students. Multi-module Clean Architecture separating :app, :server, and :common. Engineered a predictive meal engine using ShedLock distributed JDBC locks on PostgreSQL so midnight attendance resets remain atomic across backend nodes. Token bucket rate limiting preserves peak sub-100ms API latency.

Kotlin Jetpack Compose Spring Boot 3.5 PostgreSQL ShedLock Bucket4j JWT Auth

Architecture Specs → Google Play ↗

GCES Hostel Android Application Interface

Kotlin Multiplatform Play Store, AUR & Windows

ConnectLnx Multiplatform Transfer

High-throughput local network file transfer utility sharing business logic across Android, Linux, and Windows. Designed a custom binary TCP protocol with parallel multi-socket streaming, multiplexing chunks across 5 concurrent sockets for maximum local network transfer rates. Features zero-configuration mDNS peer discovery with QR camera pairing fallback.

Kotlin Multiplatform Compose Multiplatform Java NIO Sockets mDNS Ktor ML Kit QR

Technical Breakdown → GitHub ↗

ConnectLnx Multiplatform Transfer Interface

Release Orchestration 6 Target Platforms

Aztrox Release CLI Orchestrator

Unified release CLI automating build, signing, and distribution across 3 live codebases and 6 deployment targets: Google Play, GitHub Releases, AUR, Render, HuggingFace Spaces, and Firebase. Features a LIFO atomic rollback registry that reverts version bumps, gradle properties, and git tags if any intermediate stage fails.

Bash SQLite Fastlane GitHub Actions jarsigner ADB

Offline-First Room & Canvas

Smart Expense Tracker

Offline-first personal finance app. Interactive spending charts drawn on Jetpack Compose Canvas, Room database with reactive Flow queries, and background budget threshold notifications via WorkManager.

Project Details →

C++ GDExtension Native Interop

Game Engines & Stockfish Interop

C++ GDExtension bindings integrating the Stockfish evaluation engine directly into Godot for high-speed local chess evaluation, alongside two-player local multiplayer arcade systems.

Chess Engine → Arcade Suite →

Experience

Thinkster Math

AI Systems & Automation Intern

May 2026 – Jun 2026 • Remote (USA)

Engineered an unattended AI worksheet automation and analytics verification platform, replacing manual QA workflows across student mathematics curricula.

• Constructed an unattended Selenium WebDriver automation harness managing authenticated sessions, live question rendering, and telemetry capture.
• Implemented multimodal LLM vision evaluation pipelines over rendered question frames to verify mathematical proof validity, validate answer keys, and detect rendering defects.
• Refined prompt contracts to enforce deterministic outputs across complex visual layouts, minimizing false-positive inspection flags.
• Built a Flask analytics reporting service backed by MongoDB with structured output classifications and dynamic filtering.
• Architected a thread-safe execution harness using shared state locks to run multiple parallel worksheet batches without deadlocks.

Python Selenium WebDriver LLM Vision APIs MongoDB Flask REST APIs

Research & Architecture

Authored Research PyTorch Evaluation Suite

How Deep Does a Next-Concept Model Need to Run?

Next-concept language models synthesize sequences through a fixed ladder of K coarse-to-fine parallel passes. In this research, we formulate the oracle depth ceiling: the exact proportion of passes an optimal selector with perfect foresight can safely omit at parity quality. Across benchmarks, we measure a 37.7% redundant pass ceiling on XSum summarisation (replicating at 39.3% and 37.6% across validation splits). We also design an unsupervised entity saturation early-exit criterion capturing one-third of the theoretical ceiling with negligible ROUGE-L divergence.

37.7%

Oracle Depth Ceiling (XSum)

1 in 8

Passes Safely Saved (Unsupervised)

0.20

ROUGE-L Divergence Delta

Distributed Concurrency & Atomic Midnight Token Locks

How ShedLock distributed JDBC locks eliminate race conditions during midnight attendance resets across clustered backend nodes in GCES Hostel, while Bucket4j throttles requests to preserve sub-100ms API latency.

View Specs →

Zero-Copy Parallel TCP Socket Streaming in Kotlin Multiplatform

Architectural breakdown of ConnectLnx: custom binary protocol multiplexing file chunks across 5 concurrent TCP connections using Java NIO SocketChannels and mDNS zero-configuration network discovery.

View Specs →

Automated Multimodal QA Pipelines with Vision LLMs

Architecture of the automated evaluation pipeline built at Thinkster Math: unattended Selenium capture harnesses, prompt calibration for mathematical validity, and thread-safe batch execution.

View Details →

Stack

Mobile & Multiplatform

Kotlin Jetpack Compose Kotlin Multiplatform Compose Multiplatform Coroutines & Flow Hilt Room DB Retrofit Clean Architecture

Backend & Distributed Systems

Spring Boot 3.5 PostgreSQL Flyway ShedLock Bucket4j Spring Security Java NIO Sockets Hibernate Docker

AI & Automation

Python Selenium WebDriver LLM APIs Vision LLMs Prompt Calibration MongoDB Flask PyTorch Bash

DevOps & Release Tooling

GitHub Actions CI/CD Fastlane AUR Packaging SQLite jarsigner ADB Linux Administration Git

Education

B.E. Computer Science 2023 – 2027

Government College of Engineering, Srirangam

CGPA: 7.6 / 10.0 • Trichy, India

Coursework: Operating Systems, Computer Networks, Object-Oriented Programming, Data Structures & Algorithms, Distributed Systems.

Certifications

Mobile App Development using Kotlin Verified
DevOps Engineering Verified
Kubernetes Administration Verified

Contact

Available for core Android, Kotlin Multiplatform, and systems engineering roles.

barathjack77@gmail.com

github.com/3DBarath ↗ linkedin.com/in/3dbarath ↗ +91 80159 31576 Trichy, Tamil Nadu, India

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