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Sabari S

Full Stack Developer

SABARI S

I build and ship production web platforms end-to-end — database design, APIs, PWA frontends, deployment — as the only developer on the codebase.
Let's connectView the work
status
operational
region
Coimbatore · IN
since
Nov 2025 · 1y shipping
local
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01 — About

A product is not done when it compiles.It's done when real users depend on it.

One year as the sole developer on two live products — a meal-subscription operations platform and a matrimony platform — from schema to deployment.

I build full-stack web platforms end-to-end in Next.js, React, TypeScript and Supabase/PostgreSQL: the database design and Row Level Security policies, the API layer and payment integrations, the installable PWA frontends, and the deployment. Java and Spring Boot are my backend roots — layered architecture, JPA/Hibernate, REST design — and I still reach for them where they fit.

The throughline: correctness you can prove. 280+ tests across projects, deny-by-default security, idempotent payment settlement, and audit logs on every sensitive read. If a feature can silently fail in production, it isn't finished.

  • 01

    Secure by default

    Deny-by-default RLS, encrypted PII, audit-logged access — decided at the schema, not bolted on later.

  • 02

    Prove it with tests

    Unit, RLS-aware integration and E2E passes gate every release. Green pipelines, not green promises.

  • 03

    Own the whole stack

    Database, API, frontend, payments, deployment — one developer, one accountable codebase.

02 — Git log --career

Deployment history.

  1. release/2025.11 — HEAD

    GoldenAxe Technology Solutions

    Software DevelopernowNov 2025 → present · 1y

    Full-time · On-site · Coimbatore, Tamil Nadu, India

    Sole full-stack developer on two production platforms serving real customers — owning database design, APIs, PWA frontends, payments, security and deployment end-to-end.

    • Next.js
    • React
    • TypeScript
    • Supabase
    • PostgreSQL
    • RLS
    • PWA
    • Payments
    • MCP
    • Docker

    shipped under this role

    • Zora Healthy Foods — Subscription & Delivery Platform

      Meal-subscription operations platform: customer PWA, 29-page staff console, realtime delivery board, kitchen production planner and sales CRM — 55 pages, 65 DB migrations, 43 Postgres functions.

      • Integrated dual payment gateways (Cashfree + PhonePe) behind one idempotent, provider-agnostic settlement module.
      • Built a delivery route planner on self-hosted OSRM/VROOM with Docker.
      • Shipped an MCP server exposing 36 audited AI-assistant tools (OAuth 2.1, scoped tokens) and phone+PIN auth with WhatsApp resets; 183 unit tests on strict TypeScript.

    • KNK Matrimony — Matrimony Platform

      Production matrimony platform: member matchmaking app, 12-module admin console (38 routes), custom phone+PIN auth, installable PWA and PDF biodata generation.

      • Bank-grade privacy: AES-256-GCM encrypted national IDs, deny-by-default Postgres RLS, gender-aware contact-privacy rules, audit-logged sensitive-data access.
      • Migrated 800+ real users from a legacy platform with a custom ETL + delta-sync pipeline.
      • Verified release with 100+ RLS-aware integration tests and a full E2E acceptance pass.

  2. release/2023.07

    Kongu Engineering College

    Deep Learning Research · PublishedJul 2023 → Nov 2023 · 5m

    Research project · Erode, Tamil Nadu, India

    Co-authored and published research on voice-based gender recognition, comparing CNN and RNN architectures on audio features. Improved generalisation across diverse vocal datasets with dropout and batch normalisation.

    • Python
    • TensorFlow/Keras
    • Librosa
    • CNN
    • RNN
    • Audio Processing

02a — EXPLAIN ANALYZE

The work, measured.

One year of solo shipping, reduced to numbers.

Live products shipped as sole developer
2Live products shipped as sole developer
Real users migrated with zero data loss
800+Real users migrated with zero data loss
Automated tests across projects
280+Automated tests across projects
Production DB migrations on one platform
65Production DB migrations on one platform

03 — Skill

The toolchain, declared.

Everything below has shipped to production in the last year — not a wishlist.

stack.json
{
"frontend": ["Next.js", "React.js", "TypeScript", "JavaScript (ES6+)", "HTML5", "CSS3", "Tailwind CSS", "Responsive Design", "PWA", "SSR / CSR", "React Hooks", "State Management"],
"backend": ["REST API Design", "API Integration", "CRUD", "HTTP/HTTPS", "JSON", "API Auth (OAuth 2.1)", "Authorization", "Error Handling", "MCP Servers", "Payment Gateways (Cashfree, PhonePe)"],
"database": ["Supabase", "PostgreSQL", "SQL", "Database Design", "Row Level Security", "Triggers", "Postgres Functions", "Supabase Storage", "Realtime", "Indexing", "Joins & Keys", "Migrations"],
"security": ["RBAC", "AuthN & AuthZ", "Row Level Security", "AES-256-GCM", "Access Control", "Audit Logging", "Secure API Design"],
"java": ["Java", "Core Java & OOP", "Collections", "Exception Handling", "Multithreading", "Stream API", "Spring Boot", "Spring MVC", "Spring Data JPA", "Hibernate", "MySQL", "Maven"],
"tooling": ["Git", "GitHub", "Vercel", "Netlify", "Docker", "Postman", "VS Code", "IntelliJ IDEA", "AI-Assisted Development", "Claude", "Bubble.io"],
"testing": ["Unit Testing", "RLS-aware Integration Tests", "E2E Acceptance", "Strict TypeScript"]
}
// mode: ship_end_to_end · one dev · schema → UI → deploy
  • build

    Frontend & PWA

    Next.js, React, TypeScript, Tailwind CSS, PWA, SSR

  • store

    Data & APIs

    Supabase, PostgreSQL, RLS, Postgres Functions, REST, MCP

  • secure

    Security & Java Backend

    RBAC, AES-256-GCM, Audit Logs, Spring Boot, JPA, Hibernate

every skill, by domain

  • Frontend

    • Next.js
    • React.js
    • TypeScript
    • JavaScript (ES6+)
    • HTML5
    • CSS3
    • Tailwind CSS
    • Responsive Design
    • PWA
    • SSR / CSR
    • React Hooks
    • State Management

  • Backend / API

    • REST API Design
    • API Integration
    • CRUD
    • HTTP/HTTPS
    • JSON
    • API Auth (OAuth 2.1)
    • Authorization
    • Error Handling
    • MCP Servers
    • Payment Gateways (Cashfree, PhonePe)

  • Supabase / Database

    • Supabase
    • PostgreSQL
    • SQL
    • Database Design
    • Row Level Security
    • Triggers
    • Postgres Functions
    • Supabase Storage
    • Realtime
    • Indexing
    • Joins & Keys
    • Migrations

  • Security

    • RBAC
    • AuthN & AuthZ
    • Row Level Security
    • AES-256-GCM
    • Access Control
    • Audit Logging
    • Secure API Design

  • Java

    • Java
    • Core Java & OOP
    • Collections
    • Exception Handling
    • Multithreading
    • Stream API
    • Spring Boot
    • Spring MVC
    • Spring Data JPA
    • Hibernate
    • MySQL
    • Maven

  • Development / Tools

    • Git
    • GitHub
    • Vercel
    • Netlify
    • Docker
    • Postman
    • VS Code
    • IntelliJ IDEA
    • AI-Assisted Development
    • Claude
    • Bubble.io

  • Testing

    • Unit Testing
    • RLS-aware Integration Tests
    • E2E Acceptance
    • Strict TypeScript

04 — SELECT * FROM projects WHERE status = 'live'

Shipped, not claimed.

live · production · solo developer

Zora Healthy Foods

A meal-subscription and delivery operations platform: customers subscribe through an installable PWA while staff run the business from a 29-page console — realtime delivery board, kitchen production planner, sales CRM and finance. 55 pages, 65 migrations, 43 Postgres functions, one developer.

  • One settlement module, two gateways

    Cashfree and PhonePe sit behind a single idempotent, provider-agnostic payment layer — retries and webhooks can never double-charge.

  • Route planning on your own metal

    Delivery runs are optimised on self-hosted OSRM + VROOM in Docker, so routing costs nothing per request.

  • AI-ready by design

    An MCP server exposes 36 audited tools behind OAuth 2.1 and scoped tokens, so assistants can operate the platform safely.

  • Next.js
  • React
  • TypeScript
  • Supabase
  • PostgreSQL
  • Cashfree
  • PhonePe
  • OSRM/VROOM
  • Docker
  • MCP
Visit live

live · production · solo developer

KNK Matrimony

A community matrimony platform: members browse and match through a PWA, admins manage everything from a 12-module console with 38 routes, and biodata is generated as PDF on demand. 800+ real users migrated from a legacy system without a single lost record.

  • Bank-grade privacy

    National IDs encrypted with AES-256-GCM, deny-by-default Postgres RLS, and gender-aware contact-privacy rules.

  • Every sensitive read is logged

    Audit logging on sensitive-data access gives admins a full trail of who saw what, when.

  • Migration you can trust

    Custom ETL + delta-sync moved 800+ users; 100+ RLS-aware integration tests and a full E2E pass verified the cut-over.

  • Next.js
  • React
  • TypeScript
  • Supabase
  • PostgreSQL
  • RLS
  • AES-256-GCM
  • PWA
  • PDF Generation
Visit live

open source · github.com/sabarisakthivel

publication

Voice-Based Gender Recognition using Deep Learning

Jul 2023 → Nov 2023

Published research comparing CNN and RNN architectures for gender classification from voice. Dropout and batch normalisation improved generalisation across diverse vocal datasets.

  • Python
  • TensorFlow/Keras
  • Librosa
  • CNN
  • RNN
  • Audio Processing

education

  • B.Tech · Artificial Intelligence & Data Science

    CGPA 7.38 / 10

    Kongu Engineering College · Erode, Tamil Nadu

    2021 → 2025

05 — Contact

Let's connectand build something real.

Open to Full Stack and Backend roles — any location, immediate joiner. Happy to talk Next.js, Postgres RLS, payment integrations, or the platform your team is trying to ship with too few hands.

Email meLinkedInGitHub
base
Coimbatore, Tamil Nadu, IN
tz
IST · UTC+05:30
availability
immediate joiner · any location