Arjun Rana - Flutter Developer

Professional Summary

Flutter Developer with 3.6+ years of experience building scalable, high-performance cross-platform mobile applications across Fintech, Healthcare, and E-commerce. Delivered 15+ production applications, with a strong focus on building reliable, user-centric, and maintainable mobile solutions. Expertise in Flutter, Clean Architecture, BLoC, Riverpod, and offline-first architectures, with experience designing robust application workflows and scalable codebases. Skilled in AI/LLM integrations using OpenAI and Google Gemini, performance optimization, resilient API architecture, and technical leadership, with a proven ability to deliver complex production-ready applications.

Technical Skills

Mobile Development:

Flutter, Dart, Cross-Platform Development (Android & iOS), Web, Windows Desktop, Responsive UI, Custom Widgets, Platform Channels

Architecture & State:

Clean Architecture, MVVM, BLoC / Cubit, Riverpod, SOLID Principles, Repository Pattern, Offline-First Architecture

Backend & Data:

REST APIs, Dio, WebSockets, Firebase (Auth, Firestore, FCM), Hive, SQLite, Secure Storage, Caching & Error Handling

AI & Intelligent Features:

OpenAI API, Google Gemini API, LLM Integration, Multimodal AI, SSE Streaming, Prompt Engineering, Google ML Kit

Performance & Engineering:

Performance Optimization, Flutter DevTools, Memory Profiling, Lazy Loading, Widget Rebuild Optimization

Tools, Payments & Deployment:

Git/GitHub, CI/CD Pipelines, Postman, Play Console, TestFlight, Razorpay, Stripe

Professional Experience

Flutter Developer | Innovins Softech Solution Pvt. Ltd.

April 2024 – Present | Remote

Engineered and shipped 10+ enterprise mobile apps across healthcare, fintech, and retail, consistently maintaining 4.5+ star store ratings.
Improved app performance and frame rendering by 60% by eliminating unnecessary widget rebuilds, implementing lazy pagination, and profiling memory leaks via Flutter DevTools.
Reduced API failure rates by 40% by designing a unified networking and caching framework utilizing Dio interceptors, token refresh flows, and Hive local storage.
Mentored 3 junior developers through architecture reviews, test-driven development practices, and standardized linting guidelines.

Key Production Highlights:

• QiSpine (Healthcare & Telemedicine): Architected dual doctor-patient apps with real-time video consultations, appointment booking, patient monitoring, and encrypted health records.

• Kookease (Generative AI Recipe Platform): Integrated multimodal LLM pipelines (Gemini / OpenAI API) with real-time SSE token streaming, voice/image inputs, and structured JSON parsing to synthesize interactive recipes.

• Impetus (Fintech & Wealthtech): Developed personal wealth management app with proprietary risk assessment algorithms, live market news streaming, and advisory consultation scheduling.

Team Lead | Flutter Developer | NextGen Techno Ventures

June 2023 – March 2024 | Remote

Directed a cross-functional agile squad of 4 (2 backend engineers, 1 UI/UX designer, 1 QA), consistently achieving a 95% sprint completion rate.
Improved engineering delivery velocity by 30% by standardizing repository branching strategies, automated code review pipelines, and shared UI component libraries.
Led technical architecture decisions, migrating legacy codebases to Clean Architecture with BLoC, reducing technical debt and feature regression bugs by 35%.

NextGen Production Highlights:

• Mitra Fintech (Agent & Customer Apps): Delivered dual-app lending solution with digital KYC verification, auto-cropping document scan, credit scoring, and automated status tracking.

• Green India Retail (Customer & Delivery Partner): Multi-role subscription e-commerce platform with automated recurring payments, live GPS order tracking, and inventory sync.

Flutter Developer Intern | Celebrare

May 2023 | Remote

Developed 15+ production features and resolved 50+ bugs across consumer-facing mobile applications.
Built 30+ reusable, pixel-perfect custom widgets from Figma specifications, accelerating front-end delivery by 25%.
Integrated Firebase Auth, Firestore, and FCM Push Notifications, boosting user engagement and retention.

Flutter Developer Intern | Baoiam Innovations Pvt. Ltd.

March 2022 – May 2022 | Remote

Developed core cross-platform UI modules and navigation flows for ed-tech mobile application using Flutter and Dart.
Integrated REST APIs and authentication services, ensuring responsive data rendering and smooth state transitions.
Built 25+ reusable responsive widgets, ensuring smooth 60 FPS performance and cross-device compatibility across Android and iOS.

Education

B.Tech in Computer Science Engineering — Uttarakhand Technical University | 2019 – 2023

Speaking Experience

Tech Speaker — Flutter Siliguri | "Building Production-Ready Flutter Apps" | Jul 2024

Certifications

Advanced Flutter Development — Coursera | 2023

Flutter Development Bootcamp — Udemy | 2022

Git & GitHub Essentials — Udemy | 2022

Leadership & Methodologies

Team Leadership • Agile/Scrum • Code Review • CI/CD Automation • Generative AI Workflows • App Store Deployment

Languages

English (Professional Working Proficiency) • Hindi (Native)