Build City-Based Listings Platform with Secure API Transactions

I need an ASP.NET Web API (targeting .NET 6 or later) that allows external partners to safely manage transactional data. · ...

We are seeking an experienced Backend API developer to resolve issues related to duplicate transactions occurring under retry conditions. The ideal candidate will have a strong understanding of API design and implementation, particularly in handling errors and transaction managem ...

We are looking for an experienced WordPress developer to build a city-based listings portal with integrated transaction functionality.The platform will serve as a discovery portal where users can explore city-specific listings and complete transactions through secure payment gate ...

We are looking for someone who can help us identify, obtain, or document any available APIs (official, partner or internal) that can be used to view order and transaction history , check transaction status , access reference numbers and related details. The goal is to understand ...

We are looking for an experienced Fintech API & Dashboard Developer. · We provide full API documentation, API keys, and webhooks. · This is not a simple API pull — accuracy, security, and system design matter. · Integrate third-party financial services APIs using provided documen ...

We are a fintech startup operating a mobile money and airtime payment API with Stellar blockchain · and GOIP USSD systems. · Refactor existing API logic for · BenefitsJoin a fast-growing fintech with real-world transaction volume. · ...

Project Scope: Stripe Connect & Affiliate Automation · Stripe Connect Express onboarding API integration with UI guidance for influencers · Enabling and configuring Stripe Connect within your Stripe account · Secure storage of connected account data on your server for future payo ...

We're building a mobile investment platform that integrates with Interactive Brokers APIs to provide portfolio tracking and ACH deposits/withdrawals. · Set up and integrate IBKR's Trading Web API (OAuth 2.0) · Coordinate with IBKR support to resolve API access issues · ...

We are building a proprietary, high-performance payment gateway designed to serve as a central API for various e-commerce platforms. · Build a robust payment processing engine in Go that handles transaction lifecycles (Auth, Capture, Refund, Void). · Implement industry-standard s ...

We are seeking an experienced QuickBooks Online (QBO) API developer to help us automate bulk updates to a Transaction-level custom field ("Department") across invoices, bills, expenses, sales receipts, and related transaction types. Currently, this field must be manually entered ...

I'm looking for an experienced blockchain developer to build an automated system for my Solana-based project. · Project Goal · I need a system that: · Collects transactions from a specific set of Solana wallet addresses (or filtered users). · For each transaction: · Identify the ...

+Job summary · We are looking for an experienced automation developer to help us build a reliable PayPal data automation system. · ...

We are building a cashback and rewards platform that needs a senior backend engineer to develop a standalone tracking and payout engine. · Track outbound affiliate clicks · Integrate with multiple affiliate network APIs · The system must be scalable, secure, and designed with fin ...

We are looking for a senior FinTech backend engineer to build an MVP payment gateway using Java that connects to an acquirer via ISO 8583 processes card transactions and generates settlement · and reconciliation reports. · Build an MVP payment gateway using Java that connects to ...

+We need to make use of APIs, a warehouse and a CMS which lets us follow the user journey. · The project includes understanding each part of the process and creating a warehouse, funnel, gathering APIs and plug them into a Looker dashboard. · +Tableau, · Google Analytics, · Data ...

We need to set up a integation that allows this: · When a transaction is made via , some data is collected in the checkout form (like ID, address etc) and saved to that contact's profile. · Data like ID or custom fields is collected via systeme in the CRMs contact, but not export ...

We are seeking an experienced Oracle Simphony GEN1 consultant to assist with validating and exposing Transactional Services (STS) for a third-party integration. · This engagement does not involve menu design, front-end layout, or operational POS training. · The scope is limited t ...

Job Title: · Senior Backend Developer Needed for Digital Services Platform (Wallet + API Integrations) · Job Description: · We are building a high-quality MVP for a digital services platform that includes wallet balance management, transaction processing, and integration with thi ...

We are seeking an experienced developer to set up PayPal API for our online platform. The ideal candidate will have a strong understanding of payment gateway integrations and be able to seamlessly implement the PayPal API to ensure secure and efficient transactions. Your role wil ...

We are looking for a highly skilled Laravel Developer to join our project for a specific and critical task: building and integrating a custom payment gateway.The ideal candidate should have deep experience with Laravel's ecosystem and a proven track record of handling complex API ...