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tanvir-robin/README.md
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What I do

Mobile apps, built properly. I work with Flutter to ship production Android and iOS apps. Not just prototypes — apps with real state management, offline sync, animations and platform integrations.

Backend, infrastructure and the bits in between. Node.js APIs over REST and GraphQL, deployed on VPS with nginx, SSL and proper process management. Real-time features via WebSockets, job queues, and third-party integrations done right.

Complete systems, not just parts. I build full SaaS products and IoT-enabled platforms where every layer talks to each other cleanly — mobile client, server, database, hardware. I take things from zero to live.



Selected Client Apps

These are published products I have built for companies and client teams. They are not my own startups or personal apps. I have worked on many more production systems, but I can only share a selected set here because several projects are covered by NDA.

CouCou Express logo CouCou Express
Built for CouCou

Flutter, Node.js, MongoDB
All-in-one delivery platform for food, parcels, groceries, pharmacies, supershops, and more, currently serving users in Senegal.

Google Play App Store
Tech: Flutter, Node.js, MongoDB, WebSockets
Highlight: Real-time order flow and multi-service delivery operations
CouCou Express Driver logo CouCou Express Driver
Built for CouCou

Flutter, Node.js, MongoDB
Driver and rider operations app with dispatch, GPS-based order assignment, live tracking, status updates, earnings, and customer communication.

Google Play App Store
Tech: Flutter, Node.js, MongoDB, Geofencing, WebSockets
Highlight: Live rider tracking and operational dispatch workflows
ServiceHub NZ logo ServiceHub NZ
Built for KiaSolutions

Flutter, Node.js, MongoDB
Service marketplace + business SaaS + CRM for the New Zealand market, with 40+ features across operations, scheduling, customer management, and business workflows.

Google Play App Store
Tech: Flutter, Node.js, MongoDB, Microservices, OAuth
Highlight: Integrated platform architecture with geolocation-powered workflows
ServiceHub Staff logo ServiceHub Staff
Built for KiaSolutions

Flutter, Node.js, MongoDB
Workforce management app covering payroll, leave, expenses, attendance, live location monitoring, and core HRM operations.

Google Play App Store
Tech: Flutter, Node.js, MongoDB, GPS Tracking, Role-based Access
Highlight: HR workflows connected with real-time field visibility
Notifa logo Notifa
Built for Prevail IT

Flutter, Firebase, Google Cloud
Never forget what matters. A smart reminder system that breaks through Google Cloud Scheduler's 30-day barrier with an intelligent layered queue architecture, enabling reliable notifications up to one year in advance.

Google Play App Store
Tech: Flutter, Firebase, Google Cloud Scheduler, Cloud Functions
Highlight: Two-level database-driven scheduling for long-range reminders
TipsWe logo TipsWe
Built for Zemparant LLC

Flutter, Firebase
Sports analytics and prediction platform delivering prediction content, actionable insights, and live sports score experiences.

Google Play App Store
Tech: Flutter, Firebase, REST APIs, Cloud Functions
Highlight: Analytics-driven sports content with real-time score delivery
CricOn logo CricOn
Built for a sports-tech client

Flutter, Firebase
Real-time cricket scoring engine with ball-by-ball updates, automatic rate calculations, match-state handling, and tournament standings generation.

Google Play
Tech: Flutter, Firebase, Realtime Database, Scoring Logic
Highlight: Computation-heavy live scoring and leaderboard pipelines


Stack



GitHub





Codeforces

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  1. Chat-app-serverpod Chat-app-serverpod Public

    A Realtime chat app made with Flutter with a backend support of Serverpod

    PLpgSQL 50 20

  2. Weather-App Weather-App Public

    A fully functional weather app with real time updates built with flutter SDK.

    Dart 33 8

  3. Google-ML-Subject-Segmentation-Flutter Google-ML-Subject-Segmentation-Flutter Public

    A implementation of Google ML Subject Segmentation Kit to Flutter App through method channel.

    C++ 7 1

  4. MyEdu MyEdu Public

    MyEdu – All‑in‑one university management app: manage students, courses, attendance, exams, results, fees, and communications in one intuitive platform.

    Dart 1

  5. E-Health-Solution E-Health-Solution Public

    E-health care solution with doctor panel, patient panel and admin panel.

    Dart 5

  6. Tracklayer Tracklayer Public

    TrackLayer is a lightweight analytics platform for tracking links, pixels, file downloads, and QR scans anywhere on the internet. It provides real-time insights, public analytics pages, embeddable …

    JavaScript 1