Zubaer Alam Bihim
Zubaer Alam Bihim
Senior Software Engineer · Flutter · Chandpur, Bangladesh
Available for new projects · Remote, UTC+6

Mobile apps that ship to both stores — and keep shipping.

Six years, 20+ production apps on Android and iOS. Flutter and Dart first, with backend in Kotlin/Spring Boot and Supabase — built end to end, from Postgres schema through native store release, for founders and teams in the USA, Germany, the UAE, Ireland, and India.

20+ apps shipped 6+ years in Flutter Remote · UTC+6
20+
Android & iOS apps shipped
6+
Years building in Flutter
5
Countries with clients
4
Live in both stores today
What I can build for you

One developer, the whole product.

You get a senior engineer who owns the app from database to store listing — no hand-offs, no "that's the backend team's problem".

Mobile app, Android + iOS

One Flutter codebase, two native store releases. Push notifications, payments, maps, chat, media — the integrations real apps need.

  • Design-to-app from Figma or a napkin sketch
  • Store submission, review fixes, updates
  • One codebase, native release on each platform
Good for: a new product, or rescuing a stalled app.

Backend, admin & APIs

The part your app talks to. Postgres schemas with row-level security, REST APIs, auth, and an admin panel so your team can run things without you.

  • Supabase or Kotlin/Spring Boot, your call
  • Multi-tenant, role-based access
  • Migrations, seeds, and a clean handover
Good for: apps with users, orders, payments, or teams.

AI-accelerated build

I direct agentic AI tools (Claude, Copilot) to write the first 80% while I review, fix what breaks, and own the architecture. Weeks instead of months — same senior-level quality.

  • MVP in weeks, not quarters
  • Web + mobile + backend in one pass
  • Proof: Deshi Choco, built end-to-end this way
Good for: tight budgets, tight deadlines, validating an idea.
Selected work

Case studies, with store links to prove it.

Every project below shipped. Where it's still public, the listing is one tap away.

Referable app screens Screenshot coming soon
Live · both stores2 appsFlorida, USA

Referable

Role: Lead mobile + backend engineer · via C7Creative

A multi-tenant referral platform: businesses run reward programs, customers refer friends and redeem. Two apps sharing one backend, each shipped to Google Play and the App Store.

  • Customer and Business apps from one shared Flutter core
  • Kotlin/Spring Boot backend with tenant isolation and RBAC
  • Four store listings live and maintained
FlutterKotlinSpring BootPostgresFirebase
Kingstone Comics app screens Screenshot coming soon
Live · both storesMediaFlorida, USA

Kingstone Comics

Role: Mobile engineer · via C7Creative

A motion-comics and movie reader for a publisher's catalogue. Heavy on media: paged comic reading with motion playback and video, shipped to both platforms from one Flutter codebase.

  • Page-by-page reader with motion playback
  • Video playback alongside the comic reader
  • Live on Google Play and the App Store
FlutterVideoAndroidiOS
JobsNavi app screens Screenshot coming soon
Live · both storesRecruitingGermany

JobsNavi

Role: Senior Software Engineer · JobsNavi, Chemnitz · 2023–2025

The mobile client for jobsnavi.de, a German job-recruiting platform, shipped natively to Android and iOS. Also built the company's investor networking/event app (vip-chemnitz.de) and a health-based candidate-matching app.

  • Native Android and iOS releases for the German market
  • Two further apps for the same company
  • Two-year engagement, 2023–2025
FlutterAndroidiOSREST
Deshi Choco storefront and app Screenshot coming soon
Web + mobileE-commerceAI-built

Deshi Choco

Role: Everything · independent

An e-commerce platform built entirely by directing agentic AI tooling — Next.js 14 storefront, Flutter app, and a 10-table Postgres schema with triggers and row-level security on Supabase. The proof point for the AI-accelerated offer above.

  • Storefront, app, database, and admin in one pass
  • Row-level security so customers only see their own data
  • Senior review on every AI-generated line
Next.js 14FlutterSupabasePostgresClaude
HottestSpot event ticketing screens Screenshot coming soon
In progressTicketingFlorida, USA

HottestSpot

Role: Flutter + web frontend owner · via C7Creative

Event ticketing: creators organize events and sell tickets, admins monitor activity. Clean architecture throughout, Go backend, and I own the Flutter and web frontends end-to-end.

  • Creators organize events and sell tickets
  • Admins monitor activity
  • Flutter app and web frontend, Go backend
FlutterWebGoClean architecture
How we'd work together

No surprises. You see the app every week.

Four steps from first message to a live store listing. You always know what's done, what's next, and what it costs.

Discovery call

30 minutes on WhatsApp or Meet. You describe the product; I ask the questions that change the estimate.

Free

Scope & quote

A written scope with screens, features, and a fixed price or a weekly rate — whichever fits how you want to work.

Written, before any build starts

Build in weekly demos

A test build on your phone every week. Feedback goes straight into the next sprint, not into a backlog you never see.

Length depends on scope

Store release & handover

I handle Play Console and App Store Connect, review rejections, and hand over the repo, credentials, and docs.

Then: maintenance on request
Experience

Six years, five countries, one stack.

2024 — present

Senior Software Engineer

C7Creative · Florida, USA · Remote, project basis

Kingstone Comics and Referable (both live in both stores). Currently building HottestSpot — own the Flutter and web frontends end-to-end.

2025 — present

Independent Software Developer

Remote / Freelance

Deshi Choco (e-commerce, AI-built end-to-end). Technical lead on Madrasah Management and MIBD financial systems — schema design, RBAC, migrations, and code review.

Jun 2023 — May 2025

Senior Software Engineer

JobsNavi · Chemnitz, Germany

jobsnavi.de for Android and iOS, an investor networking/event app (vip-chemnitz.de), and a health-based candidate-matching app.

Apr 2022 — Apr 2023

Senior Software Engineer

RedSpider Web & Art Design · Dubai, UAE

Audio/video chat apps with admin panels (Feeta Business, ZappApp Social), a doctor-appointment system (GoDoctor), and a matrimonial app with in-app support chat.

2020 — 2022

Mobile Application Developer

Ireland · India · Bangladesh

WhatsForDinner (Dublin): driver, customer, and merchant apps. Vertitect (Kolkata): crypto-management, agri e-commerce, e-learning. Root Devs & Artificial Soft (Dhaka): e-commerce, live cricket scores, streaming, geofencing.

Mobile

  • Flutter
  • Dart
  • Kotlin
  • Android
  • iOS
  • Firebase
  • In-app purchase
  • Push

Backend

  • Supabase
  • Postgres
  • Spring Boot
  • REST APIs
  • Auth & RBAC
  • Row-level security

Web & AI

  • Claude / agentic tooling
  • Next.js
  • React
  • GitHub Copilot
  • Clean architecture
Before you ask

Questions clients usually have.

Do you publish the app to the stores, or do I?

I do. I set up Play Console and App Store Connect under your accounts, handle screenshots, listings, review feedback, and rejections. You own the accounts and the app; I do the work.

Fixed price or hourly?

Either. Clear scope gets a fixed price with milestones. Ongoing or evolving work runs on a weekly rate. Both come with a weekly build you can try on your own phone.

What about the backend — do I need another developer?

No. I build the backend too: Postgres on Supabase or a Kotlin/Spring Boot service, plus an admin panel for your team. If you already have an API, I'll integrate with it.

Can you take over an existing app?

Yes. I'll audit the codebase first, tell you honestly what's salvageable, and give you a plan — whether that's stabilizing what's there or a rebuild.

Time zone and communication?

I'm in Bangladesh (UTC+6) and have worked remotely with teams in the USA, Germany, the UAE, Ireland, and India. WhatsApp, email, Slack, or Meet — whatever your team already uses.

Start a project

Tell me what you want to build.

A few sentences is enough. I'll come back with questions or a call slot.

Chandpur, Bangladesh · Remote worldwide · Resume on request.

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