Md. Sazzad Hossain
Junior Mobile Application Developer
I am a mobile-focused developer with a strong CSE foundation and hands-on delivery across Flutter, Kotlin, and full-stack systems. I enjoy turning complex workflows into simple user experiences and building products that stay reliable at scale.
Technical skills
Core
Frameworks & State Management
Backend & APIs
Databases
Tools & DevOps
Other
Work experience
Junior Mobile Application Developer
- Developed an AI shopping assistant in Flutter that turns complex product research into a clear top 3 decision flow.
- Combined live web data with AI to deliver practical recommendations that match user budget and intent.
- Supported product growth with dependable backend performance, multilingual UX, and analytics-guided iteration.
- Built modular ordering flow with detailed item customizations and tabs.
- Integrated bKash and SSLCOMMERZ payment pipelines.
- Prepared Firebase-backed authentication and real-time order workflows.
Production apps shipped
Real apps built, tested, and published to app stores — not side projects.
Top 3 Picks (Flutter)
Built a Flutter experience that compresses research into three confident recommendations. Combined live web data with AI so results stay grounded in real prices, reviews, and availability.
Firewood Steakhouse (Flutter)
Built modular ordering flow with detailed item customizations and tabs. Integrated bKash and SSLCOMMERZ payment pipelines. Prepared Firebase-backed authentication and real-time order workflows.
Fabrino (Kotlin)
A Kotlin e-commerce mobile app for fashion products with clean category flows and product detail exploration. Implemented category-first product browsing and size-aware product presentation.
LibraryHub (NestJS + Next.js)
A role-based full-stack library management platform. Designed separate dashboards and actions by user role. Implemented JWT authentication and OTP password reset.
Hazira Khata (Kotlin)
Executed a full UI/UX overhaul for 100k+ users, migrating legacy XML to Jetpack Compose using Figma specs. Optimized interface hierarchies and integrated advanced search/sorting for large institutional datasets.
Education
BSc. in Computer Science and Engineering
Higher Secondary Certificate (HSC), Group-Science
Secondary School Certificate (SSC), Group-Science
Why hire a developer through Teamz Lab?
Upwork payment protection
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Resource augmentation ready
Need a dedicated developer on your team? Md. integrates into your workflow, follows your processes, and reports to your lead. Staff augmentation without the hiring overhead.
Full team backup
When you hire through Teamz Lab, you get more than one developer. Our designers, QA engineers, and architects back every project. Design review, code review, and testing are included.
Competitive rates
Get a skilled remote developer at rates significantly lower than US/EU agencies — without compromising quality. Monthly packages from $1,500.
Proven track record
Multiple production apps on Google Play and App Store. Check our portfolio and Upwork reviews. We deliver — every time.
Cross-platform expertise
One codebase, two platforms. Flutter lets us build for Android and iOS simultaneously — saving you time and money on mobile app development.
Frequently asked questions
- How can I hire Sazzad as a Flutter developer?
- You can hire Sazzad through Teamz Lab on Upwork. Your payment is protected by Upwork escrow — you pay only when you approve the work. Contact us to discuss your project and we will match Sazzad to your requirements.
- What is resource augmentation and how does it work with Teamz Lab?
- Resource augmentation (staff augmentation) means Sazzad joins your existing team as a dedicated remote Flutter developer. He works on your project, follows your processes, and reports to your team lead — while Teamz Lab handles management, HR, and quality assurance. You get a vetted developer without the overhead of direct hiring.
- What type of Flutter apps can Sazzad build?
- Sazzad builds cross-platform mobile apps for Android and iOS using Flutter — including productivity apps, ecommerce apps, social apps, AI-powered apps, and enterprise tools. He has shipped multiple production apps to Google Play and the App Store.
- Does Sazzad work remotely?
- Yes. Sazzad works remotely from Bangladesh (UTC+6) and has been a full-time remote developer at Teamz Lab since 2022. He is experienced with remote collaboration tools, async communication, and agile workflows.
- What are the rates to hire a dedicated Flutter developer from Teamz Lab?
- Teamz Lab offers competitive rates for dedicated Flutter developers — significantly lower than US/EU agencies while maintaining quality. Monthly development packages start from $1,500. All work is through Upwork with payment protection. Contact us for a custom quote based on your project scope.
- Can Sazzad work on my existing Flutter codebase?
- Yes. Sazzad regularly works with existing codebases — refactoring, adding features, fixing bugs, and improving architecture. He follows clean code practices and can adapt to your project structure and conventions.
- What state management solutions does Sazzad use?
- Sazzad is proficient in Provider, Riverpod, Bloc, and GetX. He chooses the right state management approach based on project complexity and team preferences.
- Is the payment safe when hiring through Teamz Lab?
- Yes. All contracts go through Upwork with escrow payment protection. You fund milestones, review the work, and release payment only when satisfied. Teamz Lab has verified reviews and a track record on Upwork.
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