RESTful Jobs

Project Overview: I have a video streaming application (Movies & Series) that is partially developed. I am looking for an experienced Full-Stack Developer to take over the project, complete the Back-end development, and ensure the app is fully functional and ready for launch on the App Store and Google Play. Scope of Work: 1. Back-end Completion: Resume and finish the remaining back-end logic, database architecture, and admin panel features. 2. API Development & Integration: Build robust APIs and seamlessly integrate them with the existing front-end. 3. Payment Gateway Integration: Implement secure electronic payment methods (Stripe, PayPal, or In-App Purchases) for subscriptions. 4. Email Service Provider (ESP): Connect and configure email services (e.g., SendGrid, Mailgun) for us...

I’m calling the William Hill events API from a Python script that relies on the requests library. Even with a fixed-interval delay between calls, the endpoint still answers with HTTP 429 “Too Many Requests.” My goal is to eliminate this error so the script can run reliably again. Current setup • Language: Python 3.x • Library: requests (no async) • Throttling already in place: simple sleep interval between calls What I need from you • Diagnose why the existing delay fails to satisfy the API’s real limits. • Design and implement an effective solution—whether that means smarter back-off logic, header manipulation, session reuse, token bucket logic, or another proven approach. • Update my script and document any new...

I have opened a profile with Mastercard Payment Gateway Services and now need the REST API at wired into my system so the new merchant account is fully operational. The goal is straightforward: accept and manage both credit- and debit-card transactions directly through the gateway and expose the usual lifecycle calls—authorise, capture, refund and recurring—so my application can trigger them programmatically. Here is the exact scope I need covered: • Configure the account credentials and generate the live API keys inside the gateway. • Build the server-side integration using the official Mastercard Payment Gateway (MPGS) REST endpoints for  – one-time payments, – scheduled / recurring payments, and – refund processing. • ...

I run a Laravel site that relies on Blade templates and supports both en-IN and en-US locales. At the moment the Admin Panel is suffering from layout glitches, broken links, and styling inconsistencies that show up differently across the two English variants. On top of that, several core features database integration, API calls, and the user-authentication flow occasionally misfire under load. Your task is to dive into the existing codebase (Laravel 9, Blade, MySQL, RESTful APIs) and deliver a clean, human-written fix that: • Restores a consistent, responsive layout in the Admin Panel • Eliminates all broken internal and external links • Aligns CSS so typography, colours, and spacing match the design spec in both en-IN and en-US views • Hardens database queries,...

I’m building a full-scale, multi-vendor store for physical products and need a from-scratch solution (strictly no WordPress or WooCommerce). The project breaks down into three tightly integrated areas: the customer-facing storefront, a seller dashboard, and a master admin panel. Seller panel essentials • Inventory management so each vendor can add, edit, and delist products in real time • Order tracking with shipment status and automated customer notifications • Sales analytics that show revenue, best-sellers, and payout history Payment handling • Credit/Debit card gateway (Stripe or similar) • PayPal • Direct bank transfer with automated reconciliation The codebase should be clean, scalable, and easy to extend—Laravel, Django, Node/...

I have a functioning app, but it currently lacks any native way to connect with external mailboxes. I need a developer who can wire up full OAuth-based access to both Gmail and Outlook so that my users can authorise their accounts, keep tokens fresh, and have new messages pushed back into the app in real time. Here’s the flow I have in mind. You will guide me through creating the Google Cloud Console and Azure AD projects from scratch, generate the client credentials, and then build the OAuth consent screens. Once credentials are in place, the app must handle the three-legged OAuth flow, store refresh tokens securely, and automatically renew access tokens without user intervention. For incoming mail, I want a webhook or push subscription strategy (Gmail Push Notifications / Microso...

I am a Software Developer with over 7 years of hands-on experience in Java and AWS services, and I am excited to begin my freelancing journey on Upwork. Throughout my professional career, I have designed, developed, and maintained scalable, secure, and high-performance applications while ensuring reliability and cost-efficient cloud operations. My expertise includes core Java development, Spring-based applications, REST APIs, AWS services such as Lambda, ECS, DynamoDB, S3, CloudWatch, and Infrastructure as Code using Terraform. I focus on writing clean, maintainable code, delivering production-ready solutions, and resolving issues quickly to keep systems stable and secure. As I start my freelancing career, I am fully committed to delivering high-quality work, meeting deadlines consistent...

We are seeking an expert developer to integrate an ACH payment processor into our CRM system using the provided SOAP API. The ideal candidate will have extensive experience with SOAP APIs and a strong understanding of payment processing systems. You will be responsible for ensuring a seamless integration that allows for secure transactions and user-friendly functionality. Key Requirements: - Strong experience with SOAP API integration - Understanding of ACH payment processing and NACHA standards - Experience with JavaScript/Node.js - Knowledge of RESTful API development - Attention to detail and adherence to industry standards - Proven track record in similar payment integration projects This is a full-time hourly position. If you have relevant experience, we encourage you to apply.

I need a reliable bulk-SMS platform that lets me compose a message once, load thousands of numbers, and schedule exactly when every batch leaves the gateway. The core requirement is scheduling—think calendar-style controls or cron-like flexibility—so campaigns can be created days in advance and fire automatically, even if I’m logged out. Key functions I expect: • Upload or paste recipient lists (CSV, TXT, or manual entry). • Create, edit, and delete campaigns with a clear “send at” field. • Real-time status dashboard showing queued, sent, failed, and delivered counts. • Simple REST or HTTP API so my existing CRM can trigger sends. • Basic sender ID or shortcode handling in markets that allow it. I’m open on stack&mdas...

I need a versatile full-stack Java developer who can dedicate a full 8-hour shift aligned with Pacific Standard Time. The work revolves around a new enterprise platform we are rolling out internally, and I expect you to be comfortable owning both back-end Java code and the corresponding front-end layer. Scope of the build The application’s first release must cover three core capabilities: • User management • Data analytics • Workflow automation We will tackle these features in two-week Agile sprints, with planning, daily stand-ups, and sprint reviews held on my calendar in PST. You will demo working software at the end of every sprint so we can decide together what to refine next. Your day-to-day – Write clean, tested Java code and wire it to a modern fr...

I need a developer who can architect and code a fully RESTful CRM backend in Laravel. The core of the project is an API-first service that will: • Store and organise customer contact details, complete sales histories, and all communication logs. • Expose endpoints for customer data management, sales-pipeline tracking, and task management so the data can be consumed by future web or mobile front-ends. • Offer secure, scalable authentication (token or JWT) and role-based permissions. • Integrate directly with social media platforms—initially the major ones—so interactions and leads generated there can flow straight into the CRM. I expect well-structured Laravel code that follows PSR standards, clear naming, and thorough inline comments. Please include:...

End-to-end Developer experienced in crafting web and Android applications. I don't just write code; I design the entire ecosystem, including workflow logic, financial reporting modules, and user experience, ensuring every application is functional and business-ready