Portfolio / 2024-2026

Yogasimman
Ravisagar - Passionate engineer.

I build full-stack systems and offline-first apps for real workflows. Recently: a packaged-water ERP (Tauri + Rust), a recruitment CRM, and a civic platform with an AI assistant. I care about clean data models, clear permissions, and documentation that stays close to the code.

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>> Building backend systems + desktop tools...

>> Turning messy workflows into clear screens...

STATUS: SHIPPING FOR REAL USERS

BUILDS

Projects + systems

DOCS

Write-ups + diagrams

PLATFORMS

Web / desktop / mobile

Workflow Illustration

Built for
Real Workflows.

I like building software that replaces manual coordination: spreadsheets, status ping-pong, and "who owns this?" confusion. I start from the workflow, lock down the data model, and then ship the UI and core services with the smallest set of moving parts. When AI helps, I use it as a feature, not as the whole product.

Workflow-first design

Role-aware access

Docs that stay honest

Selected Work

Selected
Projects

A few things I’ve built recently — from business tools to applied AI experiments. Some projects include full documentation (diagrams, API surfaces, and screenshot walkthroughs) so you can see how the system actually works.

Project IndexUpdated

2025Backend + AI

CivicConnect

Civic Engagement Platform

A civic complaint + updates platform built as a set of small services, with a chatbot that helps users find answers and file issues.

One workflow from complaint intake to resolution tracking.

Services stay decoupled through events + explicit contracts.

GoNode.jsPythonFlutterVue.jsDockerKubernetes

Project Notes

Architecture

Independent services for admin, content, complaints, and chat; Dockerized and orchestrated with Kubernetes behind an NGINX gateway.

Data Flow

Events over RabbitMQ for decoupled workflows, plus gRPC calls where low latency matters. Postgres per service with Redis caching.

AI + Apps

Gemini-backed chatbot for issue guidance and triage. Flutter mobile app + Vue admin portal with JWT auth and role-based access.

Read the CivicConnect case study

2025Backend Platform

VyExpense

Corporate Expense Tracker

Trip + expense approvals with receipts, audit trails, and dashboards that help finance teams see what’s happening.

Clear approval lifecycle with permission boundaries.

Dashboards for spend visibility and operational reporting.

Node.jsExpress.jsPostgreSQLVue.js 3PiniaChart.jsJest

Project Notes

Backend

Normalized PostgreSQL schema with session auth + role-based permissions for submitters, approvers, and admins.

Frontend + tests

Vue 3 + Pinia UI with Chart.js dashboards, plus Jest/Vitest coverage across models, controllers, routes, and middleware.

Read the VyExpense case study

OngoingApplied AI

K-RAID

Kabaddi Video Intelligence (Ongoing Research)

Research project that turns match footage into structured events using pose estimation, temporal models, and agent-style reasoning.

Translates unstructured video into machine-readable event data.

More consistent review through simulation-based checks.

PythonPyTorchHigherHRNetST-CGNetU2DiffMulti-Agent Architecture

Project Notes

Pipeline

Converts raw kabaddi footage into structured data for analysis and rule adjudication, orchestrated by four agents (Raider, Defense, Simulation, Referee).

Computer vision

HigherHRNet pose estimation under occlusion, homography for court normalization, and ST-CGNet for spatio-temporal skill identification.

Open project repository

2025Desktop Systems

Thirueadu

Personal Finance Ledger

Offline-first personal finance ledger with double-entry accounting, fast local UX, and SQLite persistence.

Reliable finance tracking even without connectivity.

Fast local performance with no cloud dependency.

Tauri v2RustReactTypeScriptSQLiteReact QueryRecharts

Project Notes

System Design

Tauri v2 desktop app with a Rust command layer and a React + TypeScript UI focused on speed and responsiveness.

Data Integrity

Double-entry bookkeeping model with computed balances and SQLite persistence for auditability and offline continuity.

Typed contracts

Rust-to-TypeScript type generation (ts-rs) keeps command contracts synchronized and reduces runtime mismatch bugs.

Read the Thirueadu case study

2024Business Platform

Sunsea CRM

Recruitment CRM Operations Platform

Recruitment CRM built around real day-to-day operations: candidates, jobs, vendors, and status tracking — with seeded walkthrough screenshots.

Less manual coordination through workflow-oriented screens.

Better visibility for follow-ups and status tracking.

Node.jsExpressPostgreSQLReactTypeScriptVite

Project Notes

Backend

Node.js + Express backend with PostgreSQL models tailored to recruitment workflows and business-specific constraints.

Frontend

React + TypeScript UI designed around operational tasks, with clear state transitions and feedback.

Access

Authentication + protected routes so each role only sees the actions and data they should.

Read the Sunsea CRM case study

2026Tauri Business Platform

Water Management Software

Operations Automation Desktop Suite

Desktop operations suite for a packaged-water business — inventory, purchase/sales flows, maintenance logs, dashboards, and reports — all offline via Tauri + SQLite.

Unified operational visibility from dashboard to reports.

Faster order-to-invoice and purchase settlement with explicit statuses.

Next.jsReactTypeScriptTauriRustSQLite

Project Notes

Architecture

Next.js + React frontend invokes Rust command handlers through Tauri; rules live in Rust and data is persisted in SQLite.

Lifecycle

Status-driven purchase and sales flows (requested → accepted → completed), with history preserved for invoicing and analytics.

Coverage

Inventory packs, vendor/customer masters, invoices, returnables, maintenance tracking, analytics dashboards, and report exports.

Read the Water Management case study

2024Frontend Product

YogaTube

Video Browsing + Playback UI

YouTube-style browsing and playback built with React + TypeScript, focused on responsive layout and predictable state.

Fast navigation and playback UX across screen sizes.

Typed data handling for safer API integration.

React 19TypeScriptViteMaterial-UIAxiosYouTube API

Project Notes

Frontend

React 19 + TypeScript UI using the YouTube Data API for search/discovery, Material UI for consistency, and react-player for playback.

Read the YogaTube case study

CivicConnect

Civic Engagement Platform

2025

A civic complaint + updates platform built as a set of small services, with a chatbot that helps users find answers and ...

Backend + AIGoNode.js

View documentation

VyExpense

Corporate Expense Tracker

2025

Trip + expense approvals with receipts, audit trails, and dashboards that help finance teams see what’s happening.

Backend PlatformNode.jsExpress.js

View documentation

K-RAID

Kabaddi Video Intelligence (Ongoing Research)

Ongoing

Research project that turns match footage into structured events using pose estimation, temporal models, and agent-style...

Applied AIPythonPyTorch

Open repository

Thirueadu

Personal Finance Ledger

2025

Offline-first personal finance ledger with double-entry accounting, fast local UX, and SQLite persistence.

Desktop SystemsTauri v2Rust

View documentation

Sunsea CRM

Recruitment CRM Operations Platform

2024

Recruitment CRM built around real day-to-day operations: candidates, jobs, vendors, and status tracking — with seeded wa...

Business PlatformNode.jsExpress

View documentation

Water Management Software

Operations Automation Desktop Suite

2026

Desktop operations suite for a packaged-water business — inventory, purchase/sales flows, maintenance logs, dashboards, ...

Tauri Business PlatformNext.jsReact

View documentation

YogaTube

Video Browsing + Playback UI

2024

YouTube-style browsing and playback built with React + TypeScript, focused on responsive layout and predictable state.

Frontend ProductReact 19TypeScript

View documentation

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Experience

Work Experience

A mix of client-facing delivery and internal systems — I like owning the work end-to-end and shipping something people can use.

June — July 2025

Freelance ERP Developer

Local Water Purification Service · Ulundurpet, IN

Built an offline-first desktop ERP (Tauri v2 + Rust + Next.js) covering inventory, invoicing, orders, and customer/vendor management, backed by SQLite.
Implemented Rust IPC command handlers for business logic and a maintenance module to track service history, component lifecycles, and asset status.
Delivered the complete system within a 6-week timeline through direct client engagement, iterative prototyping, and on-site deployment with end-user training.

Freelance

July — October 2024

Intern — Web Developer

Centre for Distance Education, Anna University · Chennai, IN

Developed a PHP web portal to manage online courses and external certifications with role-based access control for administrators and coordinators.
Built dashboard views with aggregated metrics to provide operational insights for academic and administrative stakeholders.
Automated scheduled data backups using cron jobs and shell scripts, reducing manual intervention and improving data reliability.

Internship

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Additional Builds

Other Client Work & Experiments

A few extra builds that show range — client delivery, websites, and experiments that helped me level up the way I ship.

Water Purification ERP

Freelance — Offline-First Desktop ERP

Tauri v2RustNext.jsReactTypeScriptSQLiteTailwind CSS

An offline-first desktop ERP for a local water business — inventory, invoices, orders, customers/vendors, and maintenance logs, backed by SQLite.

Sunsea Aviation

Aviation Company Website

Next.jsReactTypeScriptTailwind CSSGSAP

A performance-focused marketing site with SSR/SEO, responsive layouts, and GSAP interactions that feel smooth without getting in the way.

The Ocean

EdTech Platform

Next.jsReactTypeScriptThree.jsGSAPFramer Motion

EdTech concept build exploring 3D visuals (Three.js) and scroll storytelling (GSAP), with a focus on structure, pacing, and accessibility.

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Skills

Tools I Use

The tools I reach for when shipping backend systems, desktop apps, and web products — organized the way I actually build.

Languages

PythonGoRustJavaScriptTypeScriptSQLDartPHP

Frontend

ReactNext.jsVue.jsFlutterTailwind CSSThree.jsGSAP

Backend & Databases

Node.jsExpressPostgreSQLSQLiteRedisRabbitMQ

Infrastructure & Tools

DockerKubernetesTaurigRPCLinuxNGINXJenkinsGit

AI & ML

PyTorchGoogle GeminiHigherHRNetComputer VisionMulti-Agent Systems

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YogasimmanRavisagar - Passionate engineer.

Built forReal Workflows.

SelectedProjects

CivicConnect

VyExpense

K-RAID

Thirueadu

Sunsea CRM

Water Management Software

YogaTube

CivicConnect

VyExpense

K-RAID

Thirueadu

Sunsea CRM

Water Management Software

YogaTube

Work Experience

Freelance ERP Developer

Intern — Web Developer

Other Client Work & Experiments

Water Purification ERP

Sunsea Aviation

The Ocean

Tools I Use

Languages

Frontend

Backend & Databases

Infrastructure & Tools

AI & ML

SelectedProjects

CivicConnect

VyExpense

K-RAID

Thirueadu

Sunsea CRM

Water Management Software

YogaTube

CivicConnect

VyExpense

K-RAID

Thirueadu

Sunsea CRM

Water Management Software

YogaTube

Work Experience

Freelance ERP Developer

Intern — Web Developer

Other Client Work & Experiments

Water Purification ERP

Sunsea Aviation

The Ocean

Tools I Use

Languages

Frontend

Backend & Databases

Infrastructure & Tools

AI & ML

Yogasimman
Ravisagar - Passionate engineer.

Built for
Real Workflows.

Selected
Projects

Selected
Projects