Hello, I'm

Sarkar Sifatullah
Haque Sajeeb

> |

Flutter Developer with 3+ years of experience building scalable, production-ready mobile applications, backed by research in mobile security and distributed systems.

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3+ Years Exp.
7+ Publications
5 Award Wins
3.94 CGPA / 4.00
sifatullah@portfolio:~
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01 / about

Who I Am

Sarkar Sifatullah Haque Sajeeb

I'm a Computer Science undergraduate at Dhaka International University (CGPA: 3.94/4.00) with deep experience in mobile application development and software research.

As a first author of 7+ peer-reviewed publications in IEEE and Springer venues, I bridge the gap between cutting-edge research and production-grade software. I've shipped Flutter apps used by thousands and won multiple national hackathons.

Location Mirpur Cantonment, Dhaka
University Dhaka International University
Degree BSc Computer Science & Engineering
Graduation September 2026 (Expected)

Research Interests

Software Engineering Application Security AI for Software Systems Zero-Trust Architectures Distributed Systems Mobile Computing
02 / skills

Technical Skills

Mobile Development

Flutter Firebase Appwrite Provider REST API Clean Architecture MVVM FCM

UI / UX Design

Figma Auto Layout Design Tokens Prototyping Wireframing Responsive Design Adaptive Design

Tools & Workflow

Git / GitHub CI/CD GitHub Actions Postman VS Code Cursor Agile / Scrum

Research & Security

NFC / HCE Zero-Trust Cryptography Mesh Networking AI / ML Computer Vision IoT

Backend & Other

Django Go (basic) .NET APIs WordPress Canva SQL
03 / experience

Professional Experience

App Developer Full-Time

CodencoIt — Dhaka, Bangladesh

Jan 2024 – Present

Flutter · Provider · Firebase · REST APIs · Figma

  • Design and maintain scalable mobile applications across OTA, e-commerce, and healthcare domains.
  • Build high-performance apps using clean architecture with MVVM patterns and structured state management.
  • Integrate RESTful APIs and Firebase services for real-time data synchronization and secure authentication.

App Developer Contractual

AITS Genesis — Remote, Dhaka

Mar 2025 – Present

Flutter · Provider · REST APIs · .NET · Firebase

  • Collaborate with a distributed team to build enterprise mobile applications for multi-domain clients.
  • Integrate .NET-based backend services via RESTful APIs; improve architecture and code reusability.

App Developer Contractual

CGIT Pro — Remote, Dhaka

Feb 2023 – Present

Flutter · Provider · Firebase · REST APIs

  • Develop educational mobile apps featuring live class integration, student progress tracking, and course management.
  • Improve performance and UI responsiveness through structured state management and adaptive design.

ICT Instructor

Phoenix Academic & Admission Care — Dhaka

Apr 2023 – Present

Teaching · Mentoring · HSC-12 Level

  • Teach ICT covering programming fundamentals, database basics, and software concepts.
  • Instructed and mentored over 1,000+ students in computing and digital technologies.
04 / research

Publications

Best Paper Award
First Author IDAA 2025 · Springer Nature

Secure NFC-Based Mobile Ticketing System Using Host Card Emulation: Implementation and Analysis of Security Mechanisms Against Replay Attacks

International Conference on Intelligent Data Analysis and Applications (IDAA), ACSR, Springer Nature (Atlantis Press), 2025.

First Author ICECCT 2026 · Springer Nature

A Multimodal, Infrastructure-Free Offline Emergency Communication System for Mobile Devices Using Adaptive Hybrid Mesh Networking

International Conference on Electrical, Computer and Communication Technologies (ICECCT), ACSR, Springer Nature (Atlantis Press), 2026.

First Author ICECCT 2026 · Springer Nature

A Multimodal Artificial Intelligence Framework for Cyberbullying Detection and Structured Digital Evidence Management

International Conference on Electrical, Computer and Communication Technologies (ICECCT), ACSR, Springer Nature (Atlantis Press), 2026.

Second Author ICECCT 2026 · Taylor & Francis

VisioLock: Cross-Media Secure Image Transmission via Audio-Domain Encoding and Device-Bound Cryptography

International Conference on Electrical, Computer and Communication Technologies (ICECCT), Taylor & Francis, 2026.

First Author ICECCT 2026 · Taylor & Francis

SafeLink+: A Zero-Trust Mobile Link Execution Framework for Protecting Users from Malicious URLs

International Conference on Electrical, Computer and Communication Technologies (ICECCT), Taylor & Francis, 2026.

First Author ICECCT 2026 · Taylor & Francis

A Context-Aware Reinforcement Learning-Based Framework for Adaptive Task Orchestration and Behavioral Modeling in Mobile Applications

International Conference on Electrical, Computer and Communication Technologies (ICECCT), Taylor & Francis, 2026.

First Author ICECCT 2026 · Taylor & Francis

An Integrated AI-Driven Framework for Safe Medication Management Using Computer Vision, IoT, and Secure Data Sharing

International Conference on Electrical, Computer and Communication Technologies (ICECCT), Taylor & Francis, 2026.

Under Review
First Author IEEE Access (Journal)

Design and Experimental Evaluation of an Offline-First, Revocation-Aware Merkle Tree-Based Framework for Selective Identity Disclosure on Resource-Constrained Mobile Devices

Submitted to: IEEE Access (Under Review)

05 / projects

Selected Projects

Production

Travel Management App

Full-featured airline ticketing platform with real-time flight search, booking management, and FCM push notifications. Reduced API response time by 30%.

FlutterFirebaseREST APIFCM
Production

E-Commerce Rental App

Rental-based e-commerce platform with credit purchases and installment payment tracking. Optimized caching for fast product loading. Used by 3,900+ users.

FlutterFirebaseREST APICaching
Personal Project

CoachingMate App

Institute management app with secure login, student dashboards, and dynamic per-account branding including custom logos and announcements.

FlutterAppwriteDjangoREST API
06 / awards

Awards & Honors

Champion

CUET Fall Fest — Hackathon

Built a university platform for accessing campus info, class locations, and food services.

National Event Jan 2025
Champion

DIU CSE Spring Fest — Poster Presentation

Designed a smart traffic system to predict flow and reduce future congestion.

Inter-University Mar 2025
Champion

DIU CSE Fall Fest — Project Showcase

Developed an AI-based mental health app connecting users with doctors and volunteers.

Inter-University Dec 2023
Runners-Up

NASA Space Apps Challenge — Barishal Division

Created a smart agriculture solution using NASA APIs for data-driven farming.

International Sep 2024
Runners-Up

NASA Space Apps Challenge — Cumilla Division

Proposed a space tourism platform for learning and future space travel booking.

International Oct 2023

Leadership & Service

President — DIU Computer Programming Club
Apr 2025 – Mar 2026
General Secretary — DIU CSE Volunteer Club
Oct 2024 – Nov 2025
General Secretary — DIU CSE Speakers Club
Oct 2024 – Mar 2025
Event Manager — DIU CPC Fall Fest 2024
Dec 2024
Security Lead — National Tech Carnival 2023
Apr 2023
Volunteer — Flood Disaster Relief and Rehabilitation, Bangladesh
Aug 2024
07 / contact

Get In Touch

I'm currently seeking graduate research opportunities and open to collaborations on scalable, secure, and adaptive software systems. Whether you have a research idea, project proposal, or just want to connect — my inbox is always open.

Email sifatulla.haque@gmail.com
Phone +880 1850676787
LinkedIn sifatullah-haque
GitHub sifatullah-haque

Open to Opportunities

Graduate Research · Collaboration · Freelance Projects

Send Me an Email