Open to remote · Bangladesh
MD Tangim Haque, Software Engineer

MD Tangim HaqueSystems Architecture & Software Engineer

Architecting offline-first mobile applications and secure network tunnels via AI-accelerated development.

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Scalablesystemarchitecturerequiresisolatednetworkenvironments.Iengineeroffline-firstdatapipelinesensuringpersistentapplicationstateduringhigh-latencydisruptions.

About

Architecting resilient mobile systems

ExperienceMD Tangim Haque portrait
3+

Years architecting production-grade software systems.

Fun Facts
  • — Developed custom Android TV VPN client utilizing the WireGuard protocol
  • — Architected offline-first data synchronization pipelines for financial applications.
  • — Won 2025 NASA Space Apps Challenge via optimized algorithmic solutions.
Core Stack
FlutterKotlinFirebaseWireGuardAI Coding Assistants
Specialty

Secure networking & AI-accelerated development.

Achievements
🏆

NASA Space Apps Challenge — Champion, Dhaka 2025

05

DIU Take Off Contest — 2021

27

Unlock The Algorithm — 2022

Skills

Core Technical Infrastructure

Flutter
Dart
WebDAV
OpenVPN
Singbox
REST APIs
10+
Core Technologies
Mobile Systems Architecture95%
Offline-first Synchronization90%
Secure Networking (WireGuard/WebDAV)85%
AI-Accelerated Engineering90%
Backend Infrastructure 88%
Experience

Three years, three roles, one craft.

2025-07-01 - Present

Software Engineer

Nagorik Technologies LTD

  • —Increased app review from 3.1 to 3.8
  • —Increased overall vpn app stability to 90%
  • —Developed scalable cross-platform applications targeting Android and iOS environments.
  • —Implemented WireGuard, OpenVPN, and Singbox encrypted tunneling protocols.
  • —Integrated Nextcloud and WebDAV protocols facilitating optimized memory allocation and data chunking.
  • —Constructed real-time communication pipelines utilizing REST APIs and centralized push notifications.
Secure NetworkingWebDAV ProtocolMobile Systems ArchitectureApp Lifecycle ManagementBackend Infrastructure
2024-01-01 - 2025-06-30

App Developer

Great Technical Solution

  • —Architected invoice and expense management software modules.
  • —Implemented offline-first data synchronization pipelines preventing localized data loss.
  • —Deployed compiled application binaries to enterprise application storefronts (Google Play and App Store).
  • —Generated overall app stability to 98% for optilux bd
Offline-first ArchitectureMobile Systems ArchitectureApp Lifecycle ManagementAI-Accelerated EngineeringBackend Infrastructure
2023-01-01 - 2024-01-01

Junior Software Engineer

Sumash Tech Limited

  • —Engineered cross-platform mobile interfaces utilizing declarative UI paradigms.
  • —Implemented secure user authentication systems via Firebase backend integrations.
  • —Constructed scalable data models supporting concurrent user state management.
Mobile Systems ArchitectureBackend Infrastructure
Selected Work

Multiple products, shipped and running.

Enova VPN app screenshot
Available on
Download on theApp StoreGet it onGoogle Play
01 / 07

Enova VPN

Nagorik Technologies LTD

Enova VPN

• Engineered encrypted network tunneling client supporting Android, iOS, macOS, and Android TV environments.

• Integrated WireGuard and OpenVPN protocols maximizing connection speeds and cryptographic security parameters.

Technologies used:
Secure Networking
Mobile Systems Architecture
Nagorik Technologies LTD

Deen

• Architected Islamic companion application integrating REST APIs for dynamic prayer scheduling and geographic tracking.

• Implemented localized background processes executing timely push notifications and live home-screen widget updates.

Technologies used:
Mobile Systems Architecture
Offline-first Architecture
Backend Infrastructure
Personal Project

Walley - AI Finance Assistant

• Integrated third-party AI APIs processing unstructured user financial data inputs into categorized databases.

• Architected offline-first expense tracking logic preventing data loss during network connection disruptions.

• Engineered Retrieval-Augmented Generation (RAG) pipelines processing unstructured user financial data inputs.

Technologies used:
AI-Accelerated Engineering
Offline-first Architecture
Mobile Systems Architecture
Retrieval-Augmented Generation (RAG)
Personal Project

BitTask - AI Task Manager

• Engineered Kotlin-based task management system integrating external AI APIs for algorithmic workflow optimization.

• Constructed local data storage pipelines ensuring persistent application state across user sessions.

Technologies used:
AI-Accelerated Engineering
Mobile Systems Architecture
Personal Project

Wakefy - Your alarm buddy

• Engineered localized alarm management system executing entirely on-device to maximize data privacy constraints

• Integrated Kotlin-based native background services ensuring reliable execution independent of active network connections.

Technologies used:
Offline-first Architecture
Mobile Systems Architecture
App Lifecycle Management
Commercial Project

gSub – Subscription Manager

• Engineered recurring payment tracking architecture utilizing Hive local storage and RevenueCat integrations

• mplemented persistent local data models managing subscription lifecycles and automated renewal tracking.

Technologies used:
Offline-first Architecture
Mobile Systems Architecture
Commercial Project

gExpense

• "Architected offline-first budgeting system processing localized financial transaction records."

• Implemented local database synchronization ensuring reliable application operation independent of external network availability.

Technologies used:
Offline-first Architecture
Mobile Systems Architecture
Recognition

Emerging from the build, into the spotlight.

Champion

NASA Space Apps Challenge

Dhaka Division · 2025

6th Place

DIU Take Off Contest

2021

27th Place

Unlock The Algorithm

Programming Contest · 2022

Writing

From the blog

View all posts
How Did “Free Internet” Tricks Actually Work?
8 min read

How Did “Free Internet” Tricks Actually Work?

I used to hunt for “free internet” tricks on TrickBD and Facebook groups when data was expensive. Years later I finally dug into the real networking reasons these temporary loopholes worked—and why they almost never lasted.

networkingfree-internetzero-rating
Contact

Have a product to build? Let's talk.

tanjim437@gmail.com↗+880 1610 006484↗GitHub↗

Based in Bangladesh, open to remote opportunities across any timezone. Usually replies within a day.