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Flutter-focused Mobile Application Engineer with production experience across HRMS, POS, worker apps, mobile/desktop applications, and native Android/iOS integrations. Strong in Flutter, Dart, Method Channels, platform-specific Swift/Android work, hardware/sensor integrations, stream-based geolocation, background services, CI/CD, and release-focused development. Currently leading mobile app development at OTTR Technology, with additional founder-level server operations experience through SastoHost. Experience spans end-to-end delivery, debugging, stability improvements, client support, and deployment/release dependencies across mobile and server environments.…Flutter-focused Mobile Application Engineer with production experience across HRMS, POS, worker apps, mobile/desktop applications, and native Android/iOS integrations. Strong in Flutter, Dart, Method Channels, platform-specific Swift/Android work, hardware/sensor integrations, stream-based geolocation, background services, CI/CD, and release-focused development. Currently leading mobile app development at OTTR Technology, with additional founder-level server operations experience through SastoHost. Experience spans end-to-end delivery, debugging, stability improvements, client support, and deployment/release dependencies across mobile and server environments.

Rahul Kr. Sah

App Developer, Software Engineer, DevOps Developer, +1

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Flutter-focused Mobile Application Engineer with production experience across HRMS, POS, worker apps, mobile/desktop applications, and native Android/iOS integrations. Strong in Flutter, Dart, Method Channels, platform-specific Swift/Android work, hardware/sensor integrations, stream-based geolocation, background services, CI/CD, and release-focused development. Currently leading mobile app development at OTTR Technology, with additional founder-level server operations experience through SastoHost. Experience spans end-to-end delivery, debugging, stability improvements, client support, and deployment/release dependencies across mobile and server environments.…Flutter-focused Mobile Application Engineer with production experience across HRMS, POS, worker apps, mobile/desktop applications, and native Android/iOS integrations. Strong in Flutter, Dart, Method Channels, platform-specific Swift/Android work, hardware/sensor integrations, stream-based geolocation, background services, CI/CD, and release-focused development. Currently leading mobile app development at OTTR Technology, with additional founder-level server operations experience through SastoHost. Experience spans end-to-end delivery, debugging, stability improvements, client support, and deployment/release dependencies across mobile and server environments.

Available to hire

Flutter-focused Mobile Application Engineer with production experience across HRMS, POS, worker apps, mobile/desktop applications, and native Android/iOS integrations. Strong in Flutter, Dart, Method Channels, platform-specific Swift/Android work, hardware/sensor integrations, stream-based geolocation, background services, CI/CD, and release-focused development.

Currently leading mobile app development at OTTR Technology, with additional founder-level server operations experience through SastoHost. Experience spans end-to-end delivery, debugging, stability improvements, client support, and deployment/release dependencies across mobile and server environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Mobile Application Engineer (Lead) at OTTR Technology Pvt Ltd

November 1, 2025 - Present

Leads the app development team to design, build, and maintain production-grade mobile products using Flutter. Develops Flutter features with clean structure, reusable components, platform-specific configuration, and release-ready implementation. Works with Method Channels and native integrations for Android/iOS requirements including permissions, device APIs, platform callbacks, and app-specific schemes. Supports CI/CD, build preparation, debugging, code review, and production issue handling across mobile and desktop application workflows.

Mobile Application Engineer (Lead / Team Lead) at OTTR Technology Pvt Ltd

November 1, 2025 - Present

Leading the mobile app development team to design, build, and maintain production-grade mobile products using Flutter. Developing release-ready Flutter features with clean structure, reusable components, and platform-specific configuration. Working with Method Channels and native integrations for Android/iOS needs including permissions, device APIs, platform callbacks, and app-specific schemes. Supporting CI/CD, build preparation, debugging, code review, and production issue handling across mobile and desktop workflows.

Mobile Application Engineer - Lead at OTTR Technology Pvt Ltd

November 1, 2025 - Present

Lead the app development team to design, build, and maintain production-grade mobile products using Flutter. Develop Flutter features with clean structure, reusable components, platform-specific configuration, and release-ready implementation. Work with Method Channels and native integrations for Android/iOS requirements including permissions, device APIs, platform callbacks, and app-specific schemes. Support CI/CD, build preparation, debugging, code review, and production issue handling across mobile and desktop application workflows.

Mobile Application Engineer at Edap Pty Ltd (Remote)

June 1, 2025 - October 31, 2025

Built POS and worker applications across mobile and desktop platforms with Flutter. Developed and integrated a custom printer plugin handling device-specific behavior and platform communication across desktop/mobile targets. Implemented app features, API-driven flows, native bridge logic, and maintainable Flutter modules for real business workflows.

Founder & Server Operations Lead at SastoHost Nepal

January 1, 2025 - Present

Founded and operate a hosting/server business combining technical delivery, customer support, sales, and long-term client management. Manage WHM/cPanel, WHMCS, VPS, DNS, SSL, migrations, backups, ticket handling, server troubleshooting, and client onboarding. Apply production knowledge around deployment dependencies, API reliability, uptime, authentication, DNS, and support workflows for client needs including mobile app deployments.

Flutter Developer at Aayulogic Pvt Ltd

May 16, 2024 - May 31, 2025

Developed HRMS applications using Flutter for Android and iOS platforms. Built mobile screens, forms, validation, API-connected flows, local storage behavior, and reusable UI components. Worked with production debugging, UI polish, and mobile performance improvements with clean separation of UI, models, and service layers.