Senior Full-Stack Developer – Web App with User Accounts, Wallet System

We are building on-chain notification capabilities for an existing Web3 wallet and looking for an experienced blockchain engineer to design and implement a scalable notification system covering both EVM and non-EVM chains. · Native token transfers (send / receive) · Token transfe ...

We need an experienced full-stack developer to implement a Wallet / Balance Recharge System for both buyers and sellers. · ...

We are enhancing an existing Web3 wallet with on-chain notification functionality and are seeking a seasoned blockchain engineer. · Design the overall approach of an on-chain notification system for a Web3 wallet. · ...

We're looking for a developer (or small team) to build a simple but secure multi-platform application (Flutter mobile + Web + backend). · What we need · Flutter app for Android & iOS · User Web App + Admin Dashboard · backend with authentication, wallet, transactions, · and user ...

We are seeking an experienced Python developer to create a copy trading bot for Polymarket. · The system should be able to (1) identify strong/profitable Polymarket wallets and map each wallet to a particular niche that it is good at (e.g. one particular wallet/user is extremely ...

I want to create a smart contract using my ERC-20 to facilitate a voting system where MetaMask wallets vote and rewards are distributed. · ...

+We are seeking a skilled development team to Build Delivery + Wallet Apps (iOS, Android, Web).+Experience building delivery/logistics apps · Experience with payment systems or wallets · iOS, Android, Web, Backend APIs · +Must be able to deliver the system end-to-end Deliverables ...

We are building an MVP (Minimum Viable Product) for a digital employee ID system that replaces plastic staff cards with Apple Wallet and Google Wallet digital passes. · The MVP will be used initially by companies for their employees. At this stage, the platform will focus only on ...

I need an expert to fix/finalize a 90% done automation that generate tax-compliant EU invoices in Stripe, based on wallet recharge payments made in USD. · StripeInvoiceli> ...

We seek experienced QA testing teams or skilled freelance QA professionals for comprehensive end-to-end testing of Wallet Banking application designed for digital payments and financial services. · Functional testing to validate business flows and edge cases. · Integration testin ...

Developer required to build a complete ride-hailing platform similar to Uber/Bolt with improved safety loyalty and transparency. · RIDER APP REQUIREMENTSUser registration & loginPhone/email verification ...

We're looking for an experienced crypto security specialist to investigate a real payout incident on Polygon. · This role starts with forensic analysis of the incident, followed by hardening our payout process. · The ideal candidate has hands-on experience with crypto wallets, EV ...

Modify Watch Skins' wallet and payment architecture to eliminate MSB risk without custodianship of user funds. · ...

I need an expert to fix/finalize a 90% done automation that generate tax-compliant EU invoices in Stripe, based on wallet recharge payments made in USD. · ...

We are seeking an experienced developer or development team to build a crypto-based online gaming platform that integrates with established third-party game providers via APIs or SDKs. · ...

WeareseekinganexperiencedMobi–SoftwareDeveloper todesign, · develop,andmaintainaproduction-gradedigitalcredentialwalletforiOSandAndroid.The rolefocusesonsecuremobiledevelopment, · verifiablecredentials, · decentralizedidentitytechnologies,andmodern · digitalwallestandards. · ...

We're building Cadence, an API-first infrastructure layer for issuing and validating Apple Wallet passes in the endurance sports space. This is not a consumer app and not a UI-heavy project.The goal is to build the core backend ...

+We are seeking an expert in fintech to lead our finance wallet MMT project. · ++Designing and implementing the wallet system · Optimizing transactions and user experience · ...

We are looking for leaders who share our vision to deliver trust in digital assets. · ...

This document describes what needs to be built from a software perspective so developers clearly understand the flow, components, and expectations.The system is designed so that customers always pay in GBP, merchants ultimately receive value backed by USDT. · ...