Freelance Blockchain Developers in GujaratFreelance Blockchain Developers in Gujarat
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prem yekkali's avatar
prem yekkali
Surat, India
Expert in secure smart contracts and blockchain solutions.
Expert in secure smart contracts and blockchain solutions.
Cover image for Demo Decentralized Exchange (DEX) Implementation
Demo Decentralized Exchange (DEX) Implementation
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Cover image for Sample Audit service
Sample Audit service
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Cover image for Sample staking contract
Sample staking contract
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Blockchain Developer(3)
Kaushik Bhingradiya's avatar
Kaushik Bhingradiya
Surat, India
Mobile MVP Developer for Startups | Flutter, React Native.
5.0
Rating
5
Followers
Mobile MVP Developer for Startups | Flutter, React Native.
Cover image for BiorVault - One seed phrase.
BiorVault - One seed phrase. Six chains. Zero custody risk Overview BiorVault is a decentralized, non-custodial multi-chain crypto wallet that bridges Web2 convenience with Web3 empowerment. Instead of juggling separate apps and scattered seed phrases across chains, users manage Bitcoin, Ethereum, Solana, Polkadot, Cosmos, and DeFiChain from one wallet, one seed phrase, and one security model with a cold storage vault mode for long-term holdings sitting behind an extra gate on the same device. Key Features Wallet Creation & Import — BIP39/44 seed phrase support with PIN or biometric unlock Multi-Chain Support (Unique) — Bitcoin, Ethereum, Solana, Polkadot, Cosmos, and DeFiChain from one portfolio view Send & Receive — Native transaction signing with real-time status tracking that survives app restarts Fiat On-Ramp (Unique) — Buy/sell crypto directly via Paybis SDK Web3 Browser & DApp Connectivity — WalletConnect + Web3Auth for DeFi and dApp access Market & Portfolio Tracking — Live prices, alerts, and performance charts via CoinGecko Swaps & Transaction History — Full on-chain history, exportable records AI Chat & Live Support (Unique) — In-app AI assistant plus live human support via Chatwoot Cold Storage Vault — Extra-gated mode for long-term holdings Cloud Backup — Encrypted wallet backup to Google Drive Tech Stack Flutter · Dart · BLoC · Wallet Core Bindings · SignalR · Firebase (Auth, FCM, Analytics) · CoinGecko · Moralis · Paybis · WalletConnect · Web3Auth · GitHub Actions Results Shipped to production on the App Store and Play Store with 100+ active users — a working self-custody wallet spanning six chains, live fiat on-ramp, real-time DeFi connectivity, and a dedicated cold-vault security layer.
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Cover image for Activity: City-Based Activity Discovery &
Activity: City-Based Activity Discovery & Booking Platform Activity is a Kuwait-based mobile platform built to make discovering and booking local experiences simpler. Instead of searching separately for movies, parties, events, games, workshops, kids’ activities, fitness sessions, food experiences, and other things to do, users can discover activities around them, choose a time slot, complete the booking, and manage everything from one app. The platform connects users with local vendors who organize activities around the city, turning activity discovery into a complete journey from finding something interesting to showing up for the experience. The problem Finding something to do often means checking multiple platforms, social pages, event listings, and individual booking services. The challenge was to create a single experience where users could discover different types of activities based on their location and interests, understand the available options, select a suitable time, make a payment, and keep track of their bookings without switching between different services. Activity brings those steps together by combining location-based discovery, search, filtering, time-slot booking, payments, favorites, and booking management in one mobile experience. My role Flutter development for iOS and Android UI/UX implementation for activity discovery and booking Location-based activity discovery and map integration Search, filtering, favorites, and activity browsing Booking and time-slot selection flows Payment and booking confirmation integration QR-based booking and attendance experience Quality assurance and release testing. Key features Location-based activity discovery Activity is built around discovering things to do nearby. Users can browse activities based on their location and use the interactive map to visualize available experiences around them. Activities can be filtered by location, type, and time slot. Activity discovery and categorization The app brings different types of experiences into one place, including movie screenings, parties, social events, indoor and outdoor games, kids’ activities, workshops, fitness, yoga, wellness, art, cooking, food experiences, and more. Search and advanced filters With a large and varied activity catalogue, simply displaying activities in a list would make discovery harder. Activity details and time-slot booking Once users find an activity, they can open its details, review the available information, select a preferred date, choose a suitable time slot, and book their spot. The supplied booking flow shows this progression directly: activity details → date selection → time selection → Book Now. Technical approach Mobile: Flutter, Dart Platforms: iOS and Android Core modules: Location services, map-based discovery, search and filters, activity catalogue, favourites, booking management, time-slot selection, payments, QR-based booking confirmation Integrations: Maps/location services, payment gateways, backend APIs Product areas: User discovery, activity/vendor listings, scheduling, booking, payment, and attendance The application was designed as a complete mobile booking experience rather than simply an activity catalogue, with the major product flows connected from discovery through attendance. Engineering and product decisions The biggest product challenge was balancing a large variety of activities with a simple discovery experience. A user looking for a specific activity should be able to search and filter directly, while someone who simply wants to find something interesting should be able to browse suggested, featured, and recently viewed activities. The booking flow was therefore kept closely connected to the activity itself: users move from the activity card to its details, select a date and available time, complete payment, and then access the reservation through My Bookings. The project's clearest product distinction is this end-to-end flow: discover something to do → choose when to go → book the spot → manage the reservation → show up with the booking confirmation. Outcome Activity shipped as a mobile activity discovery and booking application for the Kuwait market, connecting users with local vendors and experiences across entertainment, activities, workshops, wellness, food, and other categories. The Android application is publicly available on Google Play and was updated on April 5, 2026. The result is a single mobile experience that brings together local discovery, map exploration, search, scheduling, payments, favourites, booking management, and QR-based attendance. The product idea is simple: Find an activity. Book your spot. Just show up.
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Cover image for Careezy Turning everyday home-care visits into
Careezy Turning everyday home-care visits into a structured, trackable workflow for caregivers. Overview Careezy is a mobile home-care management application designed to help caregivers manage client visits, medication schedules, service tasks, and care documentation from a single mobile experience. The app focuses on the caregiver's day-to-day workflow: arriving at a client's location, verifying the visit through GPS, clocking in, completing assigned care tasks, managing medication-related information, recording observations, and clocking out when the visit is complete. I worked on the mobile application with a focus on making these workflows simple, reliable, and practical for caregivers who need to use the app while actively providing care. The Problem Home-care visits involve more than simply showing up at a client's address. Caregivers need to know what tasks need to be completed, which medications require attention, what happened during previous visits, and how to document important observations. At the same time, care providers need confidence that scheduled visits are actually taking place at the client's location and that visit information is accurately recorded. Careezy brings these activities into one mobile workflow. GPS-based attendance helps validate that caregivers are physically near the client's address, while task tracking, medication information, notes, and reporting create a digital record of the visit. Key Features GPS-Based Clock-In / Clock-Out — Caregivers can record the start and end of a visit, with location validation restricting clock-in/out to a predefined radius around the client's location. Medication Management — Caregivers can view medication schedules and receive reminders to help ensure medications are handled at the appropriate time. Service Task Tracking — Each client visit can include an organized list of care/service tasks. Caregivers can mark tasks as completed so important activities are not missed. Care Plan Details — Client profiles provide access to relevant care-plan information, giving caregivers important context before and during a visit. Visit Notes & Reporting — Caregivers can document observations and visit details, supporting better communication and continuity of care. Appointment Notes — Appointment-related notes can be edited when information needs to be corrected or updated. Body Map — A dedicated body-map view provides a visual way to work with medication-related information. Client-Centric Workflow — The application organizes information around individual clients and their visits rather than forcing caregivers to manage disconnected workflows. Location Validation One of the more important implementation challenges was location-based attendance. A simple clock-in button could allow a caregiver to register a visit from anywhere. Careezy instead uses the client's stored location and a predefined radius to determine whether the caregiver is close enough to the client address to clock in or clock out. This creates a more reliable connection between the digital attendance record and the real-world care visit. Caregiver Workflow The core workflow is designed around the actual sequence of a home-care visit: View the assigned client and visit information. Review care-plan and medication details. Arrive at the client's location. Complete GPS-based location validation. Clock in. Review and complete assigned service tasks. Manage medication-related activities. Record visit observations and notes. Complete the visit. Clock out. This keeps the most important information available within the caregiver's mobile workflow instead of requiring multiple disconnected systems. Technical Challenges GPS Accuracy & Location Validation — Location-based attendance needs to account for real-world GPS accuracy while still enforcing the required client-location radius. Time & Timezone Handling — The application required attention to date/time handling, including fixes for timezone-related issues identified during production updates. Healthcare Workflow Usability — Caregivers may use the application while moving between tasks and clients, so workflows need to remain clear and require minimal unnecessary interaction. Production Reliability — The app has gone through multiple production iterations involving feature improvements, design updates, bug fixes, and timezone-related fixes. Platform Android & iOS Category Healthcare / Home Care / Caregiver Management Production Status Live application with ongoing production updates and improvements. Key Takeaways The most important lesson from Careezy was that healthcare workflow applications need to connect digital actions with real-world events. A clock-in feature by itself is simple. Making that clock-in meaningful requires location validation, accurate time handling, client-specific context, and a workflow that caregivers can use without slowing down the actual care process. Careezy combines these pieces into one focused mobile experience for home-care professionals.
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Cover image for RentNest Mobile App Development RentNest is
RentNest Mobile App Development RentNest is a mobile app that helps Danish renters manage their lease documents, move-in/move-out photo documentation, and tenancy questions in one place. I contributed as a Full-Stack Developer, building both the Flutter mobile client and the backend services powering document storage, photo management, and AI-assisted help with a focus on giving renters a reliable, all-in-one system for staying covered throughout their tenancy. My Role Full-stack development across Flutter mobile client and backend services Firebase integration for auth, data storage, and file handling Feature implementation for document management, photo documentation, and AI-driven help Quality assurance and testing across core user flows Technology Flutter Dart Firebase The work The app was built around three core renter needs: keeping lease and financial documents organized, documenting the condition of a home at move-in and move-out, and getting fast, reliable answers to common tenancy questions. On the document side, I built a categorized document library (Lease, Report, Bill, Correspondence) with search and file-type support for PDFs and other formats, so renters can quickly retrieve anything from their lease to deposit receipts and heating statements. For move documentation, I implemented a room-by-room photo capture flow with separate Move-In and Move-Out states, giving renters clear, dated visual evidence of a property's condition useful for resolving disputes at move-out. I also worked on the AI help experience, which lets renters ask questions grounded in their own lease and get guided answers alongside a structured help center covering topics like deposits, notice periods, and maintenance responsibilities. Using Flutter allowed the mobile app to be built and maintained from a single cross-platform codebase, while Firebase handled authentication, real-time data sync, and secure file storage for uploaded documents and photos. Alongside development, I carried out testing and quality checks across account creation, document upload, and photo capture flows to ensure a stable release. Outcome Delivered full-stack development for RentNest's renter-focused platform, including a Flutter mobile app with integrated document management, move-in/move-out photo documentation, and AI-assisted tenant support.
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Blockchain Developer(1)
Gaurav Ahir's avatar
Gaurav Ahir
Anjar, India
Innovative Fullstack Engineer
Innovative Fullstack Engineer
Cover image for b9aurav/Welldonate
b9aurav/Welldonate
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Cover image for b9aurav/injurio
b9aurav/injurio
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Cover image for dba-cc/Infra-Management-Console
dba-cc/Infra-Management-Console
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Blockchain Developer(1)
Malhar Mehta's avatar
Malhar Mehta
Ahmedabad, India
UI/UX Design | Web and Mobile Developer| | Startups
UI/UX Design | Web and Mobile Developer| | Startups
Cover image for PassportV3.io - Tech Partner
PassportV3.io - Tech Partner
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Cover image for Fashion AI: A Body Shape-Based Clothing Fit Solution
Fashion AI: A Body Shape-Based Clothing Fit Solution
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Cover image for Animal AI : Assessing Animal Fitness using AI
Animal AI : Assessing Animal Fitness using AI
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Cover image for Tech in Manufacturing at Rudra TMT Bar
Tech in Manufacturing at Rudra TMT Bar
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Blockchain Developer(1)