Saravanan — Portfolio 2026

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Portfolio 2026 · Senior Flutter and Full-Stack Engineer · Tirunelveli, India

SARAVANAN

I design, build and ship products end to end.

Senior Flutter and Full-Stack Engineer · 4+ years

See the products

Selected work

Products I designed and built.

01 / Developer team chat · Live on web · Android in closed testing

CoderTalk

Real-time team chat built for developers, with code snippets, task boards and a secret leak guard.

languages with syntax highlighting
41
automated Flutter tests
200+
of RAM runs all of production
1 GB
  • Flutter
  • Go
  • PostgreSQL
  • WebSockets
  • Firebase
  • Docker
  • Cloudflare
Read the case study: CoderTalk
CoderTalk chat with a highlighted Go code snippet

02 / Personal expense tracker · On Google Play

Ledger

Track spending, income and bills in seconds. Built for India, on Android.

to log an expense
5s
automated tests
47
ads, analytics or trackers
0
  • Flutter
  • Dart
  • BLoC (Cubit)
  • Firebase
  • Kotlin
  • Material 3
Read the case study: Ledger
Ledger home screen with today's spending

03 / Android battery alarm · Prepared for Google Play closed testing

Battery Guard

Rings an alarm when your phone reaches the charge level you choose, so you unplug in time.

internet permissions requested
0
alarm sounds, with snooze
4
native home-screen widget sizes
2
  • Flutter
  • Dart
  • Kotlin
  • flutter_bloc
  • Foreground services
  • Home-screen widgets
Read the case study: Battery Guard
Battery Guard home screen with live battery details

04 / Smart water motor control · Internal testing on Google Play · v1.0.0

AquaPilot

Run your water pump and watch your tank level from anywhere in India, over Wi-Fi, 4G or SMS.

automated tests
242
ways to reach the motor: Wi-Fi, 4G and SMS
3
languages: English and Tamil
2
  • Flutter
  • Dart
  • flutter_bloc (Cubit)
  • MQTT over TLS
  • ESP32
  • Encrypted storage
Read the case study: AquaPilot
AquaPilot dashboard with the motor running

05 / Multi-tenant billing and POS · Live

BillFlow

Cloud billing and point of sale for Indian businesses: GST invoicing, inventory and a fast barcode-driven counter.

.NET microservices behind one gateway
4
colour themes at WCAG AA contrast
13
VM runs the whole platform
1 GB
  • Next.js 15
  • TypeScript
  • .NET 10
  • PostgreSQL
  • Redis
  • RabbitMQ
  • Docker
Read the case study: BillFlow
BillFlow dashboard (placeholder)

Experience

Four years, two companies, a team of seven.

  1. May 2024 — Present

    Technow Innovations

    Team Lead, Flutter Application Developer

    Kanyakumari, India

    Lead a team of 7 developers building LIMS, CRM and e-commerce platforms for Android, iOS and Web. Defined the app architecture and built the Node.js microservices, PostgreSQL, Redis and RabbitMQ backend behind them.

    6enterprise clients using the platforms every day

  2. Jun 2023 — May 2024

    Fangage Labs

    Mobile Application Developer

    Chennai, India

    Shipped 3 production apps on Android and iOS in one year and was awarded Star Flutter Developer. Built and launched the Fangage entertainment streaming app on the Firebase stack.

    2,000+downloads of the Fangage streaming app

  3. Jul 2022 — Jun 2023

    Fangage Labs

    Software Engineer Trainee

    Chennai, India

    Shipped Dart and Flutter features to live production apps, and prototyped Web3 wallet integrations with Solidity and JavaScript.

    Day 1shipping to live production apps from the start of the traineeship

Skills

The stack I reach for.

Mobile and frontend

Apps for Android, iOS and the web from one codebase.

  • Flutter
  • Dart
  • Bloc / Cubit
  • Riverpod
  • Kotlin
  • Platform channels
  • Next.js

Backend

APIs, queues and data models behind the apps.

  • Node.js
  • Go
  • PostgreSQL
  • Redis
  • RabbitMQ
  • WebSockets
  • MQTT

Cloud

Small, cheap infrastructure that stays up.

  • Firebase
  • Supabase
  • Docker
  • Cloudflare
  • Oracle Cloud
  • Render
  • S3 storage

Tooling and release

The workflow that gets a build into the stores.

  • Git
  • GitHub Actions
  • Play Console
  • TestFlight
  • Widget and golden tests
  • ESP32
  • Jira

Testimonials

What people I have worked with say.

Saravanan is the rare engineer who can take a vague idea, design it, build it and have it in front of customers the same month. He raised the bar for the whole team.

Priya Raman

VP of Engineering, Company A

He rebuilt our billing system without a single minute of downtime, then documented it so well that new hires were productive in a week.

Arjun Mehta

CTO, Company B

I have worked with many strong developers. Few care as much about the person using the product as they do about the code behind it.

Elena Fischer

Head of Product, Company C

About

Team lead by day, product builder by night.

Photo placeholder

I studied electronics and communication engineering, then joined Fangage Labs as a trainee in 2022 and shipped Flutter features to live apps from the start. A year later I had three production apps out and a Star Flutter Developer award.

Today I lead a team of 7 at Technow Innovations. We build LIMS, CRM and e-commerce platforms that 6 enterprise clients use every day, and I own both the Flutter architecture and the Node.js microservices behind it.

Outside of work I build my own products from design to store release: a chat app for developers, an expense tracker, a battery alarm and a water motor controller that brings me back to hardware.

Currently building

AquaPilot

4G module integration for the ESP32 motor box, ahead of the public launch.

GitHub activity

View profile

1,284 contributions in the last 6 months

  • Merged · saravanan/aquapilot · 2 days ago

    SMS fallback for motor commands

  • Pushed · saravanan/codertalk · 4 days ago

    Regression test for push notification delivery

  • Released · saravanan/ledger · 1 week ago

    v1.0.0 — first Google Play release

Contact

Have a product to build?

I reply to every message within two working days.

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