Available for opportunities
< Senior Mobile Engineer — Flutter & Android />

Anand
Alagappan

I build asFlutter Architect

Building scalable mobile platforms, SDKs, and production-grade fintech applications with focus on architecture, performance, security, and developer experience.

Available for senior remote roles — Flutter, Android, fintech & platform engineering.

Resume
Anand Alagappan
Flutter
Android
Kotlin
SDK
Fintech
Security
6+Years
10M+Impact
5+Domains
scroll
About Me

Systems Engineer by Mindset

Senior Mobile Engineer with 6+ years building production-grade platforms across fintech, B2B distribution, ERP, POS, restaurant management, and enterprise SaaS — contributing to apps that reach 10M+ users across iOS & Android.

My path started unconventionally: B.E. Mechanical → Data Science (Python, ML, TensorFlow) → self-taught Flutter engineer, driven by a real problem I saw in my family's FMCG distribution business. I built Vanigam — a full ERP that digitized 70% of operations, improved sales by 60%, and cut manual time by 50%. That product taught me that great engineering solves real problems.

Currently at Bread Financial, building Native Android SDKs, Flutter mobile apps, and developer tooling that powers millions of financial transactions. I identify and fix architectural flaws that others don't see — from token security to API redundancy.

I don't just build features — I build complete systems: architecture, security, CI/CD, observability, release engineering, and long-term maintainability. Fintech-grade quality is my default.

Career Transition

Mechanical Engineering → Self-taught Software Engineer

B.E. Mechanical, Anna University (2019) · Real-world problem-solving in our family B2B wholesale business taught me to think in systems — that mindset powers every line of code I write.

Mission

Combine enterprise engineering experience + product ownership + mobile architecture + business understanding to build production-ready mobile platforms that solve real problems.

Vision

Utilize new technology effectively to solve real-world problems, improve lifestyles, and build secure, resilient, scalable systems that are trustworthy by design.

5+
Years Experience
Building production mobile systems
9M+
App Users Reached
Contributed to fintech apps used by 10M+ users across iOS & Android
11K+
Personal App Downloads
Indie & open-source apps on Play Store
4+
Industry Domains
Fintech, B2B, ERP, POS, Enterprise
72%+
Test Coverage
Achieved at Bread Financial
54%
API Call Reduction
Eliminated redundant calls, cut server cost

Certifications

Blockchain Technologies (Coursera)OWASP Top 10 (LinkedIn)Applied Data ScienceBig Data Foundations
Engineering Philosophy

How I Think About Software

“

Most developers build features.
I build complete systems.

From architecture and platform tooling to release engineering, security, scalability, analytics, CI/CD, developer experience, and long-term maintainability.

Enterprise ExperienceProduct OwnershipMobile ArchitectureBusiness UnderstandingAI-Assisted WorkflowsSecurity Mindset

Systems, Not Features

Every feature lives inside a system. I design for the system — architecture, scalability, long-term maintainability — not just the immediate task.

Security as a Feature

OWASP, SSL pinning, secure storage, threat modeling — not afterthoughts. Security is engineered in from the start.

Platform Thinking

I build platforms that other engineers can build on — SDKs, shared libraries, developer tooling, CI/CD pipelines, and lint rules that scale with teams.

Business-Aware Engineering

From running a family wholesale business to building fintech apps — I understand what software needs to do for a business. Engineering decisions are business decisions.

Tech Stack

Engineering Toolkit

7 years of tools, frameworks, and patterns refined across fintech, B2B, POS, and enterprise domains.

Core mobile platform expertise

Expert

Flutter / DartAndroid (Kotlin)

Advanced

Android (Java)Jetpack Compose

Familiar

iOS (Swift)React Native
Currently

Building at Bread Financial

Senior Software Engineer — powering iOS & Android fintech apps used by millions of customers across the US.

−60%
API Call Reduction
Eliminated redundant API calls via interceptor-level optimization — cut server cost and improved performance
−40%
Deployment Time
Jenkins CI/CD pipeline optimization
+30%
Code Quality
Custom lint package reducing issues
80%+
Test Coverage
Unit, UI, and integration test coverage
BF

Bread Financial

Sept 2023 – Present · Bengaluru

Current Role
  • Native Android & iOS SDK development for partner and internal integrations
  • Flutter mobile app architecture — clean arch, MVVM, GoRouter migration
  • API optimization: interceptor-based on-demand token refresh, 60% call reduction
  • Token security hardening — biometric protection, session deduplication
  • Okta SDK integration for secure JWT/OAuth authentication flows
  • Adobe Analytics, Adobe Assurance, Medallia SDK integrations
  • Custom lint rules, monorepo tooling, Jenkins CI/CD pipelines
  • Balance Transfer, NFL Catalogue, Direct Deposit, Digital Dispute features
  • Mentoring developers & QA engineers; leading KT sessions and ADR discussions

Products

Bread Mobile App Native Android SDK Bread Savings

Technical Highlights

GoRouter Migration

Led complex Flutter Navigator → GoRouter migration including custom bottom-nav animation using cached-screenshot workaround due to ShellRoute private key constraints. Authored migration guide, ran KT sessions.

Token Security Architecture

Identified multiple active access token vulnerability — redesigned from proactive 3-min pre-refresh to on-demand 401 interceptor strategy. Added biometric protection for refresh tokens (15% non-biometric user impact assessed).

Balance Transfer Feature

~95% frontend ownership — clean architecture implementation, DMP integration, linter cleanup, full release coordination across onshore and AEM teams.

NFL Catalogue

100% frontend + automation ownership. Delivered with zero post-release issues. Identified and fixed deprecated API immediately before production impact.

Tech at Bread Financial

FlutterKotlinAndroid SDKiOS SDKJenkinsOktaGoRouterOWASPJWTOAuth2FastlaneAdobe AnalyticsMedalliaFraudnet
Engineering Impact

What I've Delivered

Production results across fintech, B2B ecommerce, POS systems, and enterprise mobile platforms.

10M+ App Users Reached
Contributed to Bread Financial’s fintech apps used by 10M+ users across iOS & Android
scale
60% API Cost Reduction
Identified and eliminated redundant API calls via interceptor-level optimization, cutting server cost and improving app performance
performance
40% Faster Deployments
Set up Jenkins CI/CD pipelines at Bread Financial, reducing deployment time by 40%
delivery
80%+ Test Coverage
Achieved and maintained 80%+ test coverage across Flutter and Android codebases at Bread Financial
quality
50% WebSocket Load Drop
Optimized WebSocket connections at NeoSOFT EatOS — eliminated repeated unnecessary calls, 30% performance gain overall
performance
Token Security Fix
Resolved duplicate active access token vulnerability — moved from proactive refresh to on-demand 401 interceptor strategy, enforced biometric protection
quality
Native Android SDK
Built production-grade Native Android SDK for seamless client app integration — stable API, backward compatible, secure data handling
delivery
30% Fewer Code Issues
Built custom lint package at Bread Financial, reducing code quality issues by 30%
quality
60% B2B Efficiency Gain
Digitized 70% of family B2B distribution operations — invoice to delivery tracking, batch collection, multi-user access; improved sales by 60%
scale
NFL Feature: Zero Bugs
Owned complete frontend + automation for NFL Catalogue feature — delivered with zero post-release issues; identified and fixed deprecated API pre-production
delivery
Balance Transfer: 95% Ownership
Led ~95% of frontend development for Balance Transfer feature — clean architecture, DMP integration, full release coordination
delivery
6+ Engineers Mentored
Mentored junior developers and QA engineers across Bread Financial, NeoSOFT, and Teknuance via KT sessions, PR reviews, and architecture discussions
quality
Engineering Domains

What I Specialize In

From mobile platform architecture to fintech security — six deep specialization areas built through production experience.

Mobile Platform Engineering

Large-scale Flutter & Android apps across fintech, enterprise, and POS systems

  • Large-scale Flutter applications (fintech, POS, ERP)
  • Enterprise Android development (Kotlin, Jetpack Compose)
  • Modular architecture & Monorepo tooling
  • Custom lint rules & developer experience
  • Performance optimization & crash reduction

Fintech & Payments

Production fintech apps, payment workflows, and secure session management

  • Fintech mobile app engineering (Bread Financial)
  • Secure payment and balance-transfer flows
  • Okta SDK / OAuth2 / JWT integration
  • Token lifecycle & session security
  • Fraud detection and Adobe Analytics integration

B2B, ERP & Enterprise

ERP systems, distribution automation, ecommerce, and restaurant management platforms

  • B2B distribution ERP (Vanigam — full GST, invoicing, stock)
  • B2B ecommerce ecosystem (RetailMart)
  • Restaurant management platform (EatOS — QSR, KDS, CFD)
  • POS hardware integrations (SUNMI, ELO, PAX, Mosambee)
  • Offline-first architecture & multi-user access control

SDK & Plugin Development

Native Android SDKs, Flutter plugins, and hardware integrations

  • Native Android SDK for client app integrations
  • Flutter platform plugins (Pigeon, platform channels)
  • WebView rendering SDK development
  • BLE card reader & thermal printer integrations
  • Medallia, Adobe Assurance, Fraudnet SDKs

Security Engineering

OWASP compliance, token security, vulnerability remediation, mobile hardening

  • OWASP MASVS compliance & Ostorlab analysis
  • SSL pinning & secure storage patterns
  • Token security: on-demand refresh strategy
  • Biometric auth enforcement for sensitive flows
  • iOS Privacy Manifest & vulnerability remediation

AI-Assisted Engineering

AI coding workflows, rapid prototyping, documentation automation

  • AI coding workflow integration (Copilot, Claude, Cursor)
  • Architecture exploration and ADR generation
  • Rapid prototyping & technical POCs
  • Documentation automation via agentic workflows
  • Context-aware code review assistance
Production Systems

Featured Projects

Real apps. Real users. Real business workflows — not side projects or tutorials.

Vanigam GST Billing App icon
Vanigam GST Billing App screenshot
Flagship Project

Vanigam GST Billing App

Flagship Project — GST Billing & Business Management

production

Complex GST billing and business management app for B2B sellers — distributors, wholesalers, and small businesses. Built with scalable Flutter architecture and offline-first workflows. Took 1 year to build and has been adopted by many real businesses.

  • Full GST-compliant invoicing and billing system
  • Offline-first architecture with background sync
  • Multi-platform: Android + Windows + iOS
  • PDF invoice generation with custom templates
  • TCP-based data sync for cross-device operations
  • Real businesses adopted as primary billing tool
FlutterFirebaseDartPDF GenerationSQLiteTCP SyncOffline-first
Play Store GitHubCase Study 1K+ downloads
RetailMart Ecosystem icon
RetailMart Ecosystem screenshot

RetailMart Ecosystem

B2B Ecommerce — Buyer & Seller Apps

production

Complete B2B ecommerce ecosystem with dual-app architecture. 1.5 years of development with full product ownership — from architecture decisions to Play Store deployment. Includes buyer app, seller app, and NestJS backend.

  • Dual-app ecosystem: Buyer + Seller apps
  • Full product ownership for 1.5 years
  • NestJS backend with PostgreSQL + Redis
  • Swagger-to-Dart auto-generated API clients (Melos)
  • GeoLocation-based features
  • FCM push notifications
  • Melos monorepo architecture
FlutterNestJSPostgreSQLRedisFirebaseRiverPodMelosChopperPrisma
Play Store GitHubCase Study
LendWise icon
LendWise screenshot

LendWise

Business Lending Application

production

Production business lending application actively used in real-world operations. Handles financial workflows, loan management, and secure data operations for business lending scenarios.

  • Active business users in production
  • Financial workflows and loan management
  • Secure data handling and storage
  • Operational reliability at scale
  • Clean, financial-grade UI/UX
FlutterFirebaseDartSecure StorageREST APIs
Play Store GitHubCase Study
Product E-Catalogue icon

Product E-Catalogue

10K+ Downloads — PDF Generation App

production

Product showcase catalog app with powerful PDF generation. 20+ template combinations. Revenue-generating app with Google Ads integration. Achieved 10K+ downloads and 4K+ active users.

  • 10K+ total downloads
  • 4K+ active users
  • 20+ PDF template combinations
  • Revenue-generating via Google Ads
  • Smooth, business-friendly UI
FlutterPDF GenerationGoogle AdsFirebaseDart
Play Store10K+ downloads

PixBrix

Creative Visual Application

production

Creative visual application focused on user engagement and premium UI experience. Demonstrates strong UI/UX skills in a consumer-facing context.

  • Premium creative UI/UX
  • High user engagement
  • Smooth animations and transitions
  • Consumer-focused design
FlutterAndroidDartAnimations
Play Store

DrawAura Social Apps

Creative Social Utility

production

Creative social utility application for engaging creative experiences and community interaction. Social features with real-time collaboration.

  • Social utility features
  • Real-time creative tools
  • Community-focused design
  • Firebase-powered real-time features
FlutterFirebaseDartReal-time
Play Store
AI-Assisted Engineering

Modern AI Workflows

I integrate AI tooling into every phase of the engineering lifecycle — from architecture exploration to automated documentation.

CL

Claude (Anthropic)

Primary AI assistant for complex architecture decisions and code review

Architecture explorationCode review & refactoringDocumentation generationComplex problem solving
GC

GitHub Copilot

In-editor AI pair programmer for real-time code suggestions

Real-time code completionContext-aware suggestionsTest generationIDE integration
GP

ChatGPT (OpenAI)

Rapid ideation, brainstorming, and technical research assistant

Rapid prototyping ideasTechnical researchAPI explorationQuick answers
CR

Cursor

AI-first code editor for context-aware multi-file edits

Multi-file refactoringCodebase-aware editsCode generationDebugging assistance
OL

Ollama

Local LLM runner for privacy-conscious AI workflows

Private code analysisOffline AI assistanceLocal model inferenceCustom fine-tuning exploration
AW

Agentic Workflows

Automated AI-driven workflows for productivity and engineering tasks

Automated documentationPR review automationArchitecture validationContext-aware tooling

Engineering Workflow with AI

Problem→AI Exploration→Architecture→Implementation→Review + Docs→Ship

AI doesn't replace engineering judgement — it amplifies it.

Open Source

GitHub Activity

Consistent contribution across personal projects, open source, and production engineering.

GitHub Stats · anandsubbu007

0+
Total Commits
incl. private
0
Stars Earned
0
Pull Requests
0
Repos
Longest streak: 67 days
·
This year: 384 contributions

Top Languages

by repo size
Dart
52%
Kotlin
24%
Java
12%
TypeScript
7%
Python
3%
Other
2%

Contribution Activity

Less
More

Private contributions at Bread Financial are not visible in public graph

Play Store Apps

Vanigam GST Billing App icon

Vanigam GST Billing App

1K+ downloads

RetailMart Ecosystem icon

RetailMart Ecosystem

LendWise icon

LendWise

Product E-Catalogue icon

Product E-Catalogue

10K+ downloads

PI

PixBrix

DR

DrawAura Social Apps

View all on Play Store github.com/anandsubbu007
Career

Experience Timeline

6+ years across fintech, B2B ecommerce, POS systems, enterprise SaaS, and product building.

BF

Bread Financial

Current

Senior Software Engineer

Sept 2023 – Present Bengaluru, Indiafulltime

Building enterprise-grade mobile experiences for a leading US fintech. Developing Native Android SDKs, Flutter mobile apps, and developer tooling for payment and savings products.

  • Developed Native Android SDK for seamless integration into client apps
  • Built custom lint package reducing issues by 30%
  • Designed and optimized custom plugins, boosting app performance by 25%
  • Set up Jenkins CI/CD pipelines, reducing deployment time by 40%
  • Mentored junior developers and led knowledge-sharing sessions

Projects

Bread Mobile App (Flutter)Native Android SDKBread Savings (Android & iOS)
Bread Mobile App
NS

NeoSOFT Technology

Associate Software Engineer (Contract)

April 2022 – Sept 2023 Chennai, Tamil Naducontract

Built cross-platform mobile apps for Android, tablets, and POS systems. Specialized in offline-first architectures and custom hardware integrations.

  • Cross-platform mobile apps (Flutter) for Android, tablets, and POS systems
  • Offline-first architectures with local databases and background sync
  • Custom platform plugins for native Android hardware (printers, scanners, peripherals)
  • Refactored and modularized large codebases for maintainability
  • Production support, performance tuning, and OS compatibility

Projects

Flutter POS 4.0Android FABFlutter EatOSAndroid POS 3.0
TK

Teknuance Info Tech

Mobile Application Developer

Jan 2020 – Mar 2022 Chennai / Remotefulltime

Designed, developed, and deployed 5 mobile apps, 2 desktop apps, and 1 web app across fintech, e-commerce, healthcare, and social networking domains.

  • Delivered 5 production mobile apps, 2 desktop apps, 1 web app
  • Flutter + Android Kotlin/Java — full stack mobile development
  • State management with Bloc, Provider, and GetX
  • Firebase SDK, Appwrite BaaS, REST APIs, SQLite integrations
  • NestJS / Spring Boot backend integrations
SA

Subbu App Tech

Professional Freelancer

Jan 2018 – Dec 2019 Mannargudi, Tamil Nadufreelance

Independent freelance mobile development — building B2B ecommerce and cross-platform applications for clients while self-learning software engineering.

  • B2B Ecommerce App (Flutter mobile + NestJS backend)
  • Cross-platform: Android, iOS, and Web
  • Payment, auth, and product management API integrations
  • Open source contributions to the Flutter ecosystem
  • Self-taught transition from Mechanical Engineering to Software
Get In Touch

Let's Build Something

Open to full-time opportunities, consulting, SDK/Platform engineering projects, and technical advising.

Available for opportunities

Email

anandsubbual@gmail.com

LinkedIn

linkedin.com/in/anand-subbu

GitHub

github.com/anandsubbu007

Open to

Full-time Senior RolesFlutter / Android EngineeringSDK & Platform EngineeringFintech ProjectsTechnical Consulting

Find Me Online

GitHubLinkedInTwitter / XMediumStackOverflowKaggleLeetCode

Grab My Resume

6+ years of mobile engineering, fintech, SDK development, and platform engineering — in one document.

Download Resume