Flutter Developer

Fintech Platform |

EXPERIENCE

2 3 Years

LOCATION

Dehradun

EMPLOYMENT TYPE

Full-Time

About the Role

We are looking for a battle-tested Flutter Developer who can own mobile app development end-to-end for a live, production-grade fintech platform handling real money transactions (BBPS, payouts, payments). This is not a "build a UI and call an API" role — you will be responsible for the security, stability, and performance of an app that touches sensitive financial data every single day. We need someone who thinks like a senior engineer, codes with discipline, and doesn't panic when a payment fails in production at 11 PM.

If you're comfortable with "it works on my machine," this is not the role for you.

Key Responsibilities

Design, build, and maintain a production-grade fintech Flutter application (BBPS / bill payments / recharge / payouts) used by real merchants and real money.

Implement and enforce application security best practices — secure storage, obfuscation, root/jailbreak detection, anti-tampering, SSL pinning, and secure API communication.

Implement end-to-end encryption for sensitive payloads (AES/RSA, key management, hashing) in coordination with backend and payment gateway teams.

Build and maintain deep linking (App Links / Universal Links) for referral, payment callback, and notification-driven navigation flows.

Implement and manage push notifications (FCM) — including silent notifications, data payload handling, and notification-triggered app actions.

Build dynamic,



config-driven UI rendering — screens/forms that render based on JSON/API response (similar to BBPS operator/biller dynamic forms), not hardcoded layouts.

Own state management using BLoC, written with strict adherence to Clean Architecture (data / domain / presentation layers, use-cases, repository pattern).

Implement local persistence using Hive — including encrypted boxes for sensitive data, migrations, and adapters.

Write modular, reusable, testable code rooted in strong OOP principles (SOLID, abstraction, dependency injection).

Handle iOS-specific development — provisioning, entitlements, App Store compliance, platform channels, and iOS-specific bugs (not just "Android developer who also builds for iOS").

Debug and resolve production-level payment failures, encryption mismatches, and gateway integration issues independently.

Collaborate directly with backend, QA, and security teams to close vulnerabilities before release — not after an audit flags them.

Own release cycles: versioning, Play Store/App Store submissions, crash monitoring, and post-release hotfixes.

Apply solid OOP concepts (encapsulation, inheritance, polymorphism, abstraction) in daily coding, and be ready to defend these choices in live-coding rounds.





Own dynamic screen rendering — build screens/flows that render and adapt purely from JSON/API-driven configuration rather than hardcoded widget trees.

Mandatory Skills

Category

Requirement

Flutter/Dart

Strong hands-on, 2–3 yrs minimum, production apps shipped to Play Store/App Store

State Management

BLoC (mandatory) — Cubit, Event/State separation, BLoC-to-BLoC communication

Architecture

Clean Architecture — non-negotiable, must explain layering in interview

Local Storage

Hive — encrypted boxes, adapters, type registration, migrations

Security

App security fundamentals — SSL pinning, root/jailbreak detection, code obfuscation

Encryption

AES/RSA implementation experience, key exchange concepts, hashing (MD5/SHA)

Fintech Domain

Prior experience on a BBPS / payment / wallet / recharge application is a strong plus

Notifications

FCM — foreground, background, and terminated state handling

Deep Linking

Android App Links + iOS Universal Links, deferred deep linking is a bonus

Dynamic UI

Experience rendering forms/screens dynamically from API/JSON config

OOP

Strong grasp of OOP concepts — this will be tested with live coding, not just theory iOS

Must have shipped and debugged on iOS independently, not "Android-only with iOS as an afterthought"

Version Control

Git — branching strategy, PR discipline, conflict resolution

API Integration

REST APIs, error handling, retry logic, request/response encryption

Good to Have

Experience with payment gateway SDKs

Experience with biometric authentication (fingerprint/Face ID)

Understanding of PCI-DSS or similar compliance basics

📌 Flutter Developer (Dehradun)
🏢 Direct2pay Devraaj Payments And Tech Solutions
📍 Dehradun