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Syed Ahmer Shah built a secure and feature-rich Bitcoin & Cryptocurrency Wallet Mobile Application that gives users a convenient way to manage digital assets, follow cryptocurrency markets, and carry out crypto transactions from a single mobile platform. The application combines financial tools, real-time market data, security features, and portfolio management in an intuitive experience for Android and iOS users.
The project highlights expertise in Mobile App Development, Cryptocurrency Application Development, FinTech Software Engineering, Blockchain Solutions, Digital Wallet Development, Custom Software Development, Backend Engineering, and UI/UX Design. The platform was designed to support both everyday crypto users and businesses seeking a scalable digital asset management solution.
Users can manage Bitcoin and other supported cryptocurrencies, view live market prices, buy and sell digital assets, exchange one cryptocurrency for another, and review their complete transaction activity. Portfolio tracking tools allow users to monitor asset allocation and performance, while market-focused features such as watchlists, price notifications, and analytics provide timely insights into cryptocurrency movements.
Security was a core component of the platform, with features including protected account onboarding, identity/KYC verification, two-factor authentication, encrypted data handling, secure wallet management, transaction monitoring, and administrative controls. The backend infrastructure supports real-time market data integrations, transaction-related services, push notifications, and reliable synchronization between the application and cloud services.
The solution demonstrates Syed Ahmer Shah’s ability to develop cryptocurrency wallets, blockchain-powered applications, FinTech platforms, digital asset management systems, and secure financial software for crypto startups, digital finance companies, blockchain businesses, and emerging technology ventures.
Technologies Used: React Native, Node.js, Express.js, PostgreSQL, Firebase, AWS Cloud, REST APIs, Cryptocurrency Market APIs, KYC Verification, Two-Factor Authentication, Push Notification Services.
Services Provided: Mobile App Development, Android App Development, iOS App Development, React Native Development, FinTech Application Development, Crypto App Development, Digital Wallet Development, Blockchain Development, Custom Software Development, Backend Development, API Development, UI/UX Design, Cloud Infrastructure Development.
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Stacks Shield
Private peer-to-peer payments on Stacks Blockchain a Bitcoin Layer 2 , powered by zero-knowledge proofs.
Stacks Shield is a privacy application that enables users to shield STX and SIP-10 assets such as sBTC and USDCx, transfer value privately, split and merge shielded notes, and withdraw funds to a transparent Stacks address.
The application addresses a simple problem: blockchain transactions are publicly visible, making it difficult for users to maintain financial privacy when sending or receiving assets.
Stacks Shield uses zkSNARKs to prove that private transactions are valid without exposing the underlying note ownership and transaction details.
WHAT USERS CAN DO
Shield STX, sBTC, or USDCx into a private pool
Scan for their encrypted shielded notes
Transfer assets privately to another shielded address
Split shielded notes
Merge shielded notes
Withdraw assets to a transparent Stacks address
The application has been tested end-to-end on Stacks Testnet with STX, sBTC, and USDCx.
HOW WE BUILT IT
The privacy protocol is powered by a stack of zero-knowledge infrastructure, including zkSNARK circuits, zkVerify, Stacks/Clarity smart contracts, an API, relayer, and a developer SDK.
For this challenge, we used Bubble to design and build the frontend application, creating the user interface and interaction experience that brings the underlying privacy infrastructure together into a usable product.
The goal was to make a technically complex ZK privacy system feel simple from the user's perspective: select an asset, choose an operation, and let the application handle the underlying cryptography and blockchain infrastructure.
WHY BUBBLE
One of the reasons we chose Bubble for the frontend was to focus on product experience rather than spending the challenge rebuilding UI infrastructure from scratch.
Bubble allowed us to rapidly design and build the application interface around an already-working blockchain privacy protocol and turn a complex ZK workflow into a user-facing application.
The result is a frontend where users interact with familiar payment flows while the underlying system handles shielded notes, proofs, verification, relaying, and Stacks transactions.
Links
Live App:
https://shield-stx.alkebulant.com
Hmmm the search console shows that you didn't use Bubble as a frontend at all 🤔
Legal Beagle – Mobile App Development for Legal Service Automation
Preview description:
Legal Beagle needed legal services to work properly on mobile. We delivered Android and iOS apps with five-minute onboarding, secure chat, video calls, e-signatures, and data that stays current across devices.
Full description:
Problem
Attorneys and clients at Legal Beagle were stuck moving paper between tools that didn't connect. The client wanted one legal SaaS product that lived on people's phones: secure messaging, fast attorney onboarding, e-signatures, and a shared space to work a case, same on Android, same on iOS.
Solution
IT Craft provided full-cycle mobile app development for Android and iOS. The team reviewed legal workflows, mapped mobile user flows, and built real-time features for secure messaging, video and audio consultations, document exchange, e-signatures, and case collaboration.
Both apps were built to keep user data current across devices, so lawyers and clients could continue their work without losing context. IT Craft also integrated CRM systems and digital signature tools, including Clio and DocuSign, and set up cloud infrastructure for secure legal service delivery. The product included compliance-focused security, data protection, and a white-label setup for future expansion into new legal markets.
Results
· Delivered Android and iOS apps for a legal SaaS platform.
· Added secure chat, video consultations, document workflows, and e-signatures.
· Enabled real-time synchronization across mobile devices.
· Reduced mobile attorney onboarding to 5 minutes.
· Integrated CRM and digital signature tools, including Clio and DocuSign.
· Developed a white-label version for expansion into new legal markets.
Tech Stack:
· Kotlin
· Android SDK
· Swift UI Kit
· PHP 8
· Symfony 6
· API-Platform
· Node.js
· AWS ECS (Fargate)
· Docker
· Firebase
· PostgreSQL
· MySQL
Designed a sleek modern Crypto App.
Clean and intuitive UI with real-time portfolio tracking, market charts, wallet management, quick buy/sell/exchange, and insightful analytics for crypto enthusiasts.
Great job