Md Sohail Mahmud
@sohailmahmud
Senior Flutter developer building scalable cross-platform mobile apps.
What I'm looking for
I am a senior software engineer specializing in Flutter and Dart, focused on building scalable, maintainable cross-platform mobile applications using Clean Architecture, MVVM, dependency injection and advanced state management. I have led end-to-end development for marketplace, healthcare and enterprise apps, integrated real-time features with WebSockets, optimized CI/CD pipelines, and mentored junior engineers to improve delivery and code quality.
My background spans mobile, backend and cloud technologies including .NET Core, Firebase, AWS/GCP, REST/GraphQL APIs and multiple databases, with measurable achievements such as reducing API calls and build time, cutting crash rates, and improving performance and deployment reliability. I deliver pixel-perfect UI from Figma, enforce testing and automation best practices, and thrive in Agile teams focused on user-first product outcomes.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
Hurraayy Limited
Jan 2024 - Present (1 year 9 months)
Led development of a cross-platform home-sharing marketplace app, reducing build time by 25% and cutting API calls by 30% through modular UI components, Hive caching and WebSocket real-time updates.
Senior Software Engineer
ProHealth Limited
Apr 2022 - Dec 2023 (1 year 8 months)
Built and optimized cross-platform Flutter apps scaling to 10,000+ users, reduced crashes by 30%, led CI/CD and mentored 4 junior developers while implementing low-latency WebSocket chat (<200ms).
Software Engineer
Extreme Solutions
Nov 2020 - Feb 2022 (1 year 3 months)
Designed and deployed cross-platform Flutter apps reaching 50,000+ users, improved delivery speed by 25% and reduced production bugs by 30% through design patterns and code quality improvements.
Software Engineer
Cynergy Solutions, LLC
Aug 2018 - Oct 2020 (2 years 2 months)
Developed .NET Core business applications with predictive time-series analysis, migrated data to interactive dashboards doubling response speed and automated CI/CD with Docker and scripts.
Application Developer
Automate Infosys
Jan 2018 - Jul 2018 (6 months)
Designed and developed greenfield and brownfield web applications, improved cross-browser/device compatibility and reduced defects by 30% through testing and standards-compliant code.
Education
Degrees, certifications, and relevant coursework
University of Creative Technology Chittagong
Bachelor of Science, Computer Science and Engineering
2020 - 2023
Activities and societies: Programming contests, hackathons, mentoring juniors in coding and app development
Completed a B.Sc. in Computer Science and Engineering with focus on software engineering, mobile systems, and emerging technologies; participated in programming contests and mentored junior students.
Chittagong Polytechnic Institute
Diploma, Computer Technology
2014 - 2017
Completed a Diploma in Computer Technology covering programming fundamentals, system design, and web development.
Tech stack
Software and tools used professionally
AWS Amplify
AWS Glue
Blockchain
Google Cloud Platform
GitHub
GitLab
Cloudflare
GitHub Actions
GitLab CI
Flutter
Drift
PostgreSQL
MongoDB
SQLite
ObjectBox
WooCommerce
Gmail
.NET Core
.NET
Google Analytics
Figma
Jira
Java
Kotlin
Dart
Cloud Firestore
Firebase Realtime Database
iOS
GraphQL
Firebase
SignalR
uWebSockets
gRPC
Serverless
Cloud Functions for Firebase
Firebase Hosting
Time Doctor
Firebase Authentication
WebRTC
Amazon Web Services (AWS)
Firebase Crashlytics
Bitrise
Kotlin/Native
Supabase
Availability
Location
Authorized to work in
Salary expectations
Job categories
Skills
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