API-utveckling Jobs

I need an experienced full-stack engineer who can give special attention to the backend of my platform and raise its security posture across the board. The frontend is in decent shape, but the core services, data layer, and deployment pipeline all need a careful redesign so that every request, record, and secret is handled with industry-grade protection. Here is the outcome I’m after: • A fresh backend architecture that scales cleanly and is resilient against common threat vectors. • End-to-end authentication and authorization flows, encrypted at rest and in transit. • Well-structured APIs with input validation, rate limiting, detailed logging, and automated tests. • Infrastructure-as-code or container scripts so I can spin up identical, hardened environme...

Custom CRM/ERP Web App for Sales, Contracts, Installations & Automation Job Description We are looking for an experienced Full-Stack Developer to build a custom web-based CRM/ERP system for our company, Aquantia, a Spanish company selling and installing water purification systems. We do NOT want Odoo or another existing ERP implementation. We want a clean, simple and scalable custom web application built around our actual business workflow. This is Phase 1, but if the project is successful, we intend to continue working with the developer long-term and add more functionality as the company grows. COMPLETE WORKFLOW Meta Lead Ads → CRM → Automatic WhatsApp → Call/Follow-up → Sale → Contract → Electronic Signature → Financing → Installation &...

I need a complete payment gateway that can process Credit/Debit cards, Cryptocurrency, and Bank transfers seamlessly across Web, Mobile, and in-store POS environments. Robust security is non-negotiable, so the build must include Two-factor authentication, end-to-end Encryption, and smart Fraud detection baked into every transaction flow. To keep the scope crystal-clear, here’s what I must walk away with: • A scalable back-end capable of handling the three payment methods above • Front-end or SDK components that drop into web apps, native mobile apps, and common POS terminals • Security layer implementing the three features named earlier, with compliance reporting enabled • Clean API documentation and a minimal admin dashboard so I can track transactions and...

Role: Bring in clients for custom enterprise software, AI systems, and platform engineering projects — you pitch, we architect and deliver. Who you'd be selling for: An engineering-led technology partner (India-based, global delivery) with 50+ years of combined leadership experience across the team, serving 5+ industries. This isn't a design agency or a body-shop — the team leads with architects and senior engineers, not delivery managers, and positions as a long-term technical partner rather than a vendor. What you're selling — real, differentiated capability across four areas: Enterprise Platform Engineering — custom SaaS, API/systems integration, multi-tenant architecture, legacy modernization (proven up to 40% reduction in operational fragmenta...

I am building an intraday front- and back-office reconciliation intelligence platform that surfaces trade breaks within minutes instead of waiting for the usual end-of-day batch reports. The goal is twofold: first, to highlight exceptions in near real-time so operations teams can act while a position is still fresh; second, to recognise when multiple apparent breaks share one underlying root-cause and roll those into a single, actionable incident. Integration with SimCorp Dimension is central: the system will consume positions, cash ledgers, transactions, and instrument reference data through its published REST/OpenAPI services and supporting data-access interfaces, on both scheduled and event-driven cadences. A normalization layer maps SimCorp entities onto a canonical internal model, wit...

I’m looking for a full-stack developer who can deliver a web-based classified ads platform that is also API-ready for future mobile apps. The core of the site will be a robust Classified ads module focused on buying & selling items, but I also need just enough social functionality to keep users engaged. Key features I need built: • Classified ads engine: create, browse, search, filter, and manage listings strictly for buying & selling items. • Social layer: user profiles plus a private messaging system so buyers and sellers can communicate without leaving the site. • Payments & wallet: integrated checkout that lets users pay securely, maintain an on-site balance, and withdraw funds. Popular gateways such as Stripe or PayPal are fine as long as they su...

I need a Flutter mobile app with a backend. The backend should support API integrations. Ideal skills and experience: - Proficiency in Flutter and - Experience with API integrations, particularly with payment gateways and third-party services

CASHLESS Tap & Go — NFC & QR Transport Payment Platform We are looking for an experienced developer/team to build CASHLESS Tap & Go, a simple cashless payment system for public and hire transport. How it works A taxi, shuttle, private-hire vehicle or other transport vehicle has a unique NFC tag and QR code. The passenger: TAPS the NFC tag or SCANS the QR code → payment page opens → selects or enters the amount for the ride → optionally adds a tip → pays. No app download is required for the passenger. Core Requirements Unique NFC/QR payment profile for each driver/vehicle Mobile payment page Preset payment amounts + Own Amount Optional tip amounts + Own Amount Payment gateway integration Successful payment confirmation to passenger and driver Driver/op...

I’m forming a small founding team and want a business partner whose strengths lie in intermediate-level backend development. You should be comfortable building reliable, scalable services in Python, from designing RESTful APIs and data models to deploying on a modern cloud stack. This is a partnership, not a one-off contract: you’ll help steer architecture, set coding standards and share in the product’s success. While Python is essential, experience with Java or Node.js would be a welcome bonus, not a requirement. First, we’ll co-create a concise technical roadmap; next, you’ll lead the build of an MVP service layer we can demo to early adopters. If you’ve recently shipped a Python backend and are eager to grow something from the ground up, let&rsqu...

I need a seasoned Shopify app developer to build a private app that simplifies day-to-day store operations. My main objective is to streamline everything that happens after a customer clicks “buy”—from the moment an order is placed, through inventory adjustments, all the way to shipping and fulfillment updates. Here’s what I am looking for: • Order management: pull new orders in real time, surface status dashboards, and allow quick edits or bulk actions without leaving the app. • Inventory tracking: auto-adjust stock levels across multiple SKUs and locations, flag low stock, and push updates back to Shopify. • Shipping & fulfillment: integrate with my existing carriers, generate labels, and automatically write tracking numbers to the order t...

platform development using AI tools Project Brief: Multi‑Role Service Platform Overview We are building a web-based platform that connects customers with service partners to manage multi‑step processes (“cases”). Customers select a service package, complete onboarding, submit documents, follow milestones, and make milestone‑based payments. Partners manage assigned cases, review documents, set tasks, and communicate via chat. An admin oversees everything—users, cases, payments, and analytics—with full financial control. The frontend is already built (≈90% complete) as a single‑page application (HTML/CSS/JS). We now need a full backend (API, database, file storage, real‑time messaging), a partner portal, an admin panel, and integration with external services...

I need a small-footprint scheduling engine that runs in both a web application and its companion mobile app. The system will let end-users set up and manage: • meetings that push to their preferred calendar • one-off or repeating reminders with configurable notifications • fully recurring tasks (daily, weekly, custom) • WhatsApp messages dispatched automatically through the WhatsApp Business API Core expectations • A single codebase or tightly aligned services so web and mobile stay in sync in real time. • An intuitive UI for creating, editing, and canceling schedules. • Reliable background execution—think server-side cron or queue workers on the web side and native schedulers / push on iOS and Android. • Time-zone awareness, ...

I need a web-based billing platform whose core job is fast, accurate invoice generation. The front end should let regular users create, preview, download or email invoices in PDF without friction, while the back end stays clean and secure. Alongside that customer-facing side, I want a super admin panel with full control over: • User management – create, suspend, reset passwords, assign roles, view activity. • Financial reporting – pull real-time revenue summaries, export CSV/Excel, filter by date, client or product. Responsive design, solid authentication, and a well-structured database are mandatory. I’m comfortable with any modern stack (Laravel, Node, Django, Ruby, etc.) as long as the code is well documented and deploys smoothly to a standard cloud host...

I have a small React.js web application ready for production on a private domain. The cPanel account is already live, so I only need help with specific tasks—things like creating the production build, configuring the document root, handling SSL, setting environment variables, and making sure the deployment script runs smoothly each time I push fresh code. Once the site is live, I also need a clean, documented API that external partners can call securely. A lightweight REST endpoint is fine; just be sure it validates requests, returns JSON, and is ready for basic authentication or token headers so it can plug straight into their platform. Please bring solid cPanel experience, comfort with React-friendly build tools (npm, Yarn, Webpack or Vite), and the ability to test the new API fr...

I need a pro who can walk me through creating a brand-new eBay developer account and make sure it is fully activated with production keys. My sole goal is to pull sold-price data via the eBay APIs, so once the account is live and the keys are confirmed to work in a quick test call (Postman or similar), your job is done. What I expect from you: • Clear, step-by-step guidance—screen-share or concise written instructions—covering registration, application creation, sandbox verification, and production key request. • Troubleshooting along the way if eBay flags anything or asks follow-up questions. • A brief demo call to prove the keys return sold-price results. No ongoing training on other features is required; I only need the initial setup completed correctly the ...

I need a full-featured multi-vendor e-commerce site where vendors list and sell freelancing services. The platform must allow independent professionals to register as vendors, create service listings, and receive payments through a secure, automated system. Core expectations • Clean, responsive front-end that feels intuitive on both desktop and mobile • Vendor dashboard for managing offerings, earnings, and order status • Customer flow from discovery to checkout kept as simple as possible • Admin panel where I can monitor transactions, verify vendors, and resolve disputes • Scalable architecture ready for future feature additions and third-party integrations Your deliverable is a production-ready website, deployed to my hosting of choice, with brief...

I need an experienced AI/full-stack developer to build a cricket betting market analysis web app. The main purpose is to assess whether current bookmaker odds accurately reflect the real probability and strength of each team, and to identify potential market overreactions and value opportunities. The app should combine live and historical cricket data, including player statistics, team performance, match situations and bookmaker odds. It should analyse the data and provide clear signals showing when the market may be overreacting and when the available odds may differ significantly from the estimated true probability. The dashboard should be clean and simple, with easy-to-understand charts, probability comparisons, confidence levels and explanations for each signal. Key features should...

My site’s front-end is already live; what I need now is the engine that turns it into a real store. 1. Authentication Visitors should be able to register or sign in with their existing Facebook or Google accounts. After the social token is verified on the server, create a secure session or JWT so protected routes and the cart remain accessible only to logged-in users. 2. Ordering & Payment Once authenticated, shoppers must add items to a cart, review their order, and pay through Razorpay. Handle the full checkout flow, trigger Razorpay’s hosted pop-up, and process success, failure, and webhook callbacks. Successful transactions must be written to the database, and an order confirmation should appear on-screen and via email. Funds must settle directly into my linke...

I’m looking for an experienced AI Agent / Automation Developer to build an MVP for a cloud-based personal business operating system, primarily focused on Real Estate. The system will include: * Central CRM and management dashboard * Real estate properties, owners, clients, leads and deals * AI matching between property supply and buyer/tenant demand * WhatsApp Business integration and automated lead handling * AI follow-ups with human approval * Google Calendar, tasks and dynamic scheduling * Marketing, social media and content workflow * Digital products and order management * Finance, commissions and purchasing tracking * Market analytics and reporting * AI Executive Assistant for daily priorities and follow-ups Preferred experience: OpenAI API / AI Agents, n8n or Make, WhatsApp...

Build & Deliver RTIQA v1 — Global Multi-Tenant EdTech Platform RTIQA is a large, long-term project aimed at building an impactful global EdTech SaaS platform combining: - School Management System (SIS) - Learning Management System (LMS) - Student Information Management - Parent Engagement - Secure Assessments and Academic Records - Certificates and Verification with Public Verification Pages - Notifications and Communication - Practical AI-Powered Educational Assistance Tools This is a full engineering challenge focused on delivering ONE complete and production-ready outcome. The successful freelancer or team will review the existing repositories, analyze the architecture, consolidate or refactor as necessary, and take RTIQA from its current work-in-progress state to a secure, ...

We are looking for an experienced Full-Stack Developer with strong OpenAI API experience to build a modern SaaS web application that generates data analysis scripts using AI. The platform will allow users to describe their data analysis requirements or provide a specific scenario, and the system will use the OpenAI API to generate the appropriate analysis script automatically. Main Website Pages Public Website Home / Landing Page Features / How It Works Pricing / Subscription Plans Login & Registration Terms & Privacy pages User Dashboard Registered users will have a personal dashboard where they can: Enter a text description of their data analysis requirement. Describe a specific analysis scenario or objective. Submit the request to the AI. Generate data analysis scripts throu...

I run several Django-based web applications that need ongoing feature development and maintenance. To keep up with our roadmap I’m looking for a developer who is comfortable settling in for the long haul, communicating clearly, and shipping production-ready code on a steady cadence. The immediate focus is on three areas that touch nearly every part of the stack: • Multi-factor user authentication – think TOTP, backup codes, and recovery flow all wired into Django’s auth system without breaking existing sessions. • Payment integration – we currently prototype on Stripe and will move to live transactions once the flow is stable, so expect webhooks, retries, and clean error handling. • API development – new and refactored REST endpoints power...

Statement of Work (SOW): Parking Agent MVP Development ## 1. Project Overview & Objective Parking Agent is an app-less, privacy-first QR vehicle communication platform. The objective of this project is to build an Minimum Viable Product (MVP) consisting of a pre-generated QR inventory system, a secure mobile web interface for vehicle owners and scanners, automated OTP/notification routing, and a basic administrative management panel. --- ## 2. Technical Stack & Requirements (Recommended) * **Backend Framework:** Node.js (Express/NestJS) OR Python (FastAPI/Django) * **Database:** PostgreSQL (Relational database for structured QR mapping and vehicle relationships) * **Caching/Session:** Redis (For OTP storage, rate-limiting, and short-term link verification) * **Frontend:** React....

I’m building a cross-platform solution—native on both iOS and Android—that lets small shops stay completely on top of their stock and their tax obligations. Core workflow • Add an item once, store its purchase price and quantity, and have the app instantly generate a unique scannable barcode. • At checkout, the cashier can simply scan the code; the system will deduct the quantity, record the sale price, and calculate what VAT and Corporation Tax will be owed on that transaction in real time. • All staff will have full access, including the ability to adjust inventory, tweak settings, and view historical cost data—so intuitive permissions and secure authentication are a must. Key features I expect to see working end-to-end 1. Inventory CRUD with ...

I’m building a small service that closes the loop between my WooCommerce store, Delhivery shipments, and OneStop Invoice. The flow is straightforward but must run without manual touchpoints and with strict safeguards against premature or duplicate billing. Workflow in plain words 1. Pull each new WooCommerce order via API. • I need the full payload: Order ID, customer name / phone / email, billing & shipping addresses, every product with its quantity and price, plus GST and the grand total. 2. Use the AWB/Waybill from the order to query Delhivery’s API. If the status is anything other than “Delivered”, the process stops immediately—no alerts or retries, just skip creation for now. 3. Before calling OneStop, check our own database (or anoth...

Project Overview: We are looking for an elite Full-Stack / Mobile Developer to build AFRIMATI-COMMERCE, an innovative B2B transactional marketplace connecting agricultural producers and livestock farmers directly with bulk buyers, processors, and exporters. Our mission is to build a seamless human and economic synergy (osmose) that cuts out destructive middlemen and empowers rural producers. The Deliverable: • 2 Native Mobile Applications (Android & iOS) built with a unified framework (React Native or Flutter). • A robust backend API powered by NestJS (Node.js) with a PostgreSQL database. Key Functional Scope: • Wholesale B2B Only: Designed strictly for bulk quantities (metric tons, 100kg bags, livestock herds). No retail. • Secure Escrow System: Critical integrat...

1. Project Overview I work as a Tax Manager specializing in complex international tax structures (international investments, M&A transactions, cross-border financing structures, sports and cultural promotion programs). I work on transactions requiring tax coordination across multiple countries and need a centralized system that collects, organizes, and automatically updates tax guidance from more than 8 countries. Primary Objectives: 1. Build a centralized tax knowledge base: A system that monitors official tax authority websites and specialized judicial bodies, automatically downloads new updates and laws, organizes them systematically. 2. Support analysis and immediate consultation for new projects: Make this centralized knowledge available to Claude AI so that when any new project...

I’m building an **AI-powered Brazilian Tax Intelligence platform** designed to identify tax opportunities, risks, credits, and applicable tax strategies for companies. The system will analyze company and tax data and cross-reference it with a structured legal database containing **Brazilian tax legislation, administrative rulings, court decisions (CARF, STJ, STF), tax authority guidance, tax regimes, and state-specific benefits**. The platform should use AI to: * Analyze company and tax data; * Identify potential tax opportunities and risks; * Match companies with applicable tax rules and precedents; * Explain the reasoning behind each finding; * Provide the legal sources supporting the analysis; * Monitor changes in legislation and case law. The architecture must support different *...

**LOOKING FOR A FULL STACK DEVELOPER – WEB PROJECT** I am looking for an experienced **Full Stack Developer** to complete and finalize a marketplace-style web project. **The project has already been started and has an existing codebase.** I am not looking for someone to build it from scratch. I need someone who can **review the existing code, fix bugs, and complete the remaining features**. ### Current Technologies * HTML * CSS * JavaScript * Node.js * Express * MongoDB * API / Backend * User Management System * Login and Registration * Product Listing/Publishing * Purchase and Order System ### What I Need * Review the entire existing project. * Fix existing bugs and issues. * Complete the remaining features and functionality. * Improve backend security and code structure. *...

I’m creating a platform where users can browse, book, and safely interact with “rental boyfriends” for virtual companionship. The core flow is straightforward: discover profiles, check availability, reserve time slots, and chat before and during the booking. Here’s what I need built from scratch: • A clean front end—responsive enough to run smoothly in any browser today and easy to port into a mobile app later. • A secure back end that stores profile data, reviews, schedules, and completed sessions while keeping personal details private. • Real-time chat and video hooks so clients can connect instantly once a booking is confirmed. • A simple, scalable authentication layer; I’m open to email/password, phone verification, so...

DESCRIPCIÓN DEL PROYECTO: TOP GEAR & AUTOMOCIÓN OS Buscamos un Arquitecto Full-Stack / Desarrollador Senior experto en Inteligencia Artificial y E-commerce automotriz para desarrollar la plataforma web y sistema operativo Automoción OS / Top Gear. La plataforma es un motor financiero, logístico y aduanero de extremo a extremo que integra catálogos internacionales de vehículos, cotización en tiempo real de importación a Colombia (vía Zona Franca Buenaventura), pasarela de upselling de servicios en destino, automatización de marketing en redes sociales e integraciones omnicanal con portales de clasificados. 1. Motor Paramétrico de Liquidación Financiera (Backend Core) Módulo de Divisas (TRM): Int...

I’m building an online “rental boyfriend” service that will launch first in Lucknow with roughly 300 starter profiles. The core of the job is a full-featured web (or hybrid mobile) platform that lets visitors: • Browse profiles – each with photos, personal descriptions, ratings and reviews, plus advanced filters and search so users can quickly narrow results by age, interests, location, etc. • Chat in real time – seamless text messaging, voice calls and video calls are all required, ideally using a modern stack such as WebSockets and WebRTC to keep everything snappy and secure. • Book and confirm dates – an integrated booking engine with calendar view, availability management, and automatic confirmations. A payment gateway hook is wel...

I’m building a commercial SaaS platform whose primary mission is to guide field technicians through every stage of an industrial Wi-Fi deployment. The solution must ship as three tightly-integrated components: • A cross-platform mobile app (iOS and Android) that walks technicians step-by-step through installation, records signal-strength, interference and latency measurements, captures photo evidence, and drives the full project-acceptance workflow. • A cloud-hosted, scalable backend with secure data storage, role-based access control and an API powering both the app and the web. • A browser-based administration panel for project setup, live progress monitoring, workflow updates and automatic PDF acceptance-report generation. My top priority is an MVP that pr...

This app is for a car-hire business where the app needs to handle both invoicing and staff rostering, I’d think of it less as a simple car-booking app and more as an operations management app. Core app concept A central dashboard that connects: Customer → Booking → Vehicle → Driver/Staff → Job → Invoice → Payment That way, information only needs to be entered once. Key features I’d consider 1. Booking management * Customer details * Pick-up/drop-off locations * Date & time * Vehicle allocated * Driver allocated * Hire duration * Special requests * Booking status: Enquiry → Confirmed → In Progress → Completed → Invoiced → Paid 2. Rostering * Calendar view of all drivers/staff * Drag-and-drop shifts * Assign driv...

We need a legitimate, non-production Ironclad demo or sandbox account for API integration testing. Note: we need you to make an account, we cant provide our own account The environment must have the API add-on enabled and support both: - OAuth 2.0 using a client ID and client secret. - A supported API key/access token. If this is available only through Ironclad Clickwrap, provide the separate Clickwrap test environment and credentials. Deliverables - Demo/sandbox login URL, username and password. - Transferable email account and login credentials, if used. - Tenant URL and environment type. - OAuth client ID and client secret. - Our supplied redirect URL configured in the OAuth application. - Authorization Code grant enabled. - Client Credentials grant enabled, if supported. - Active ...

I’m building an online “rental boyfriend” platform and need both a full-featured website and companion mobile apps (iOS and Android). The core of the product is simple: visitors browse verified profiles, check availability, and place a booking—nothing more elaborate for now. Here is what I expect as the first release: • Website: responsive front end, secure login, profile pages with photos and bio, a calendar-style availability checker, and a straightforward booking flow that captures the chosen date, time, and basic contact details. • Mobile apps: native or cross-platform (React Native, Flutter, or similar) mirroring the same user-profile and booking experience found on the web. • Shared back end: one database and API powering both channels so u...

The goal is to create an intelligent Web Application Firewall that sits in front of my custom web applications, inspects traffic in real time, and automatically reacts to threats. The platform must excel at three core functions I have prioritised: Real-Time Threat Detection, Defensive Blocking, and Attack Analytics. Key attack surfaces to guard against are SQL Injection, Cross-Site Scripting (XSS), and Distributed Denial of Service (DDoS). Every request should be scored, logged, and, when required, blocked or rate-limited instantly. I want to see exactly what is happening through a live security dashboard and to manage rules through a clean API that my apps can call programmatically. Integration needs to be seamless: the WAF will be deployed in front of several custom web services, s...

Job Title: FinTech Software Developer – Real-Time Payments App MVP (NPP / PayTo API) Project Description: We are a fast-moving FinTech startup building a disruptive real-time mobile payment application for the Australian retail market. We need an experienced FinTech Lead Developer / Architect to build our backend Minimum Viable Product (MVP). The app allows users to scan merchant QR codes to trigger instant, bank-to-bank retail payments using Australia's New Payments Platform (NPP), PayTo, and PayID infrastructure. Key Responsibilities: Integrate third-party Australian Banking-as-a-Service (BaaS) REST APIs (e.g., Monoova, Zepto) and webhooks. Implement an ISO 20022-compliant payload to generate secure, dynamic merchant QR codes. Design a secure backend (Node.js, Go, or Py...

Necesito desarrollar una API robusta en .NET 9 o superior que automatice por completo la emisión de documentos tributarios electrónicos (DTE) para el Servicio de Impuestos Internos (SII) de Chile. Alcance funcional • Generación XML de cada DTE. • Firma electrónica avanzada (FEA) incorporando certificado digital. • Envío masivo o individual al SII y recepción del acuse. • Consulta de estado y almacenamiento de track id. • Registro de respuestas del SII para auditoría interna. • Endpoints protegidos con autenticación JWT. Tipos de DTE que debo cubrir • Facturas • Notas de crédito • Notas de débito • Boletas Requisitos técnicos * .NET 9+, C#, ...

I am looking for a developer/team to build the following software: Platforms Required React Native mobile app – iOS + Android Responsive web application Backend/API Database Admin dashboard QR code system Payment/e-commerce integration Core Software Features User Accounts Email login Google/Apple login User profiles Password/account management Profile Management Create/edit profiles Text/content fields Photo uploads Video uploads Gallery Public/private visibility Family Tree Create people/nodes Add relationships Connect profiles Living + deceased people Interactive family tree Add/remove/edit relationships QR Code System Generate unique QR codes Link QR code to specific profile QR scanning Redirect to public profile Basic scan/view tracking Replace/deactivate QR codes User Permissio...

I need a web-based dashboard, powered by the DhanHQ API, that continuously scans NSE and BSE option chains and fires in-app alerts whenever unusual activity appears. All the core metrics—RVOL, GEX, VEX, Gamma-Regime, Vex-Regime, Charm, CE & PE walls, Gamma-flip level, Dealer-Flow Score, and IV Rank/Percentile—must be user-configurable from the interface so I can tweak thresholds on the fly without touching code. The workflow I have in mind is simple: the backend fetches live data, applies my chosen parameter settings, calculates the signals, and streams results to a responsive web UI. When any metric crosses the threshold, the system should display a notification inside the application immediately and log the event for later review. Real-time charts, heat-maps, and summary...

I need a specialist to walk me through the complete setup of a Meta developer environment focused on the WhatsApp Business API. The goal is to finish with a live, fully verified developer account and an app that I can immediately plug into other services for automated messaging, web-hooks, and data exchange. Here is what I expect by the end of the engagement: • A Meta Business account and corresponding WhatsApp Business API Developer account created, verified, and linked to my business phone number. • A Facebook Developer app properly configured, because I will be using it for Integration with other services rather than for marketing or analytics. • Access tokens, webhook URLs, and any required permissions generated and demonstrated in a quick test so I can confirm me...

I need an e-commerce website built from the ground up that lets visitors locate items quickly through a fast, accurate product-search feature. Everything from the storefront layout to the backend catalogue management should revolve around that smooth search experience so customers can reach any product in only a few keystrokes. Core requirements • Modern, responsive design that works on mobile and desktop • A well-structured product database and search algorithm (live suggestions, filters, typo tolerance) • Easy dashboard where I can add or update products without touching code While user reviews and a full shopping-cart flow could be added later, the initial milestone focuses on putting the catalogue online and making search flawless. Tech stack is flexible—S...

Our eKYC platform is live, but the two-factor authentication built into the public weblink is failing consistently. Users receive the OTP/SMS push, enter the code, and the process stalls with a generic “authentication error” before redirecting them back to the login page. Server logs show no obvious stack trace, so I need someone to dig in, reproduce the fault, and patch it without disrupting the rest of the flow. What I know so far • Front-end: React single-page component that posts to a Node/Express API • Auth layer: JWT for the first factor, OTP via Twilio for the second • Database: PostgreSQL 14 • Error appears only in production, not in our staging environment Your job 1. Trace the call from the React form through the Express middleware to p...

I’m building a full-stack remittance platform that lets people move money seamlessly through bank transfers and mobile wallets. At launch those two rails are non-negotiable; later on I may add cryptocurrency, so clean, modular integrations are important. Core functions have to be in place from day one: real-time transaction tracking on both the customer and admin sides, multi-currency handling with automatic FX conversion logic, and solid user authentication (email / phone / 2FA). I also need a sandbox API that mirrors production behaviour so partner banks and wallet providers can certify their flows before we flip the switch. Three distinct roles run through every screen: • Senders initiate transfers, view statuses, and manage beneficiaries • Recipients get notified, ...

I need a reliable way to pull full-length movies and TV episodes from popular streaming platforms that sit behind Cloudflare, trigger Turnstile / reCAPTCHA, and deliver their streams through Widevine-protected playlists. The goal is a single tool—CLI or small library—that can: • Negotiate every Cloudflare layer automatically (token / challenge handling, TLS fingerprinting, rotating proxies if required). • Detect and solve any captcha that appears, handing the solution off to a third-party service key I will provide. • Acquire the playable video once the page is reached and either expose the raw HLS/DASH URLs or decrypt the Widevine L3 stream on the fly so the final output is a clear MP4 or TS file. Language is up to you; Python with Playwright or Node.js ...

I’m building a single platform that serves two audiences at once—patients who want to track their health data and healthcare providers who need a clear, real-time window into that information. The first milestone must zero in on health monitoring and reporting: patients should be able to log or automatically sync readings, while providers get an analytics-driven dashboard that makes trends and red flags impossible to miss. Security, privacy, and role-based access are non-negotiable, so please lean on best practices (HIPAA-compliant encryption at rest and in transit, granular permissions, audit logs). I’m open to your preferred stack—native iOS/Android, React Native, or Flutter for the client side and any robust, scalable backend (Node, Django, .NET, etc.)—so...

# Arquitectura y Diseño de Software: OPEN RIP Software para (UV & DTF) Este documento contiene la especificación técnica, el flujo de datos y la arquitectura de componentes para el desarrollo de un software RIP personalizado con soporte multihilo, procesamiento de color (CMYK+W+V) y selección dinámica de controladores de impresión. --- ## 1. Diagrama General de Arquitectura (Componentes) ``` [ Interfaz de Usuario (UI) ] │ ▼ [ Motor de Gestión de Trabajos (Job Manager) ] ──(Cola de Impresión) │ ▼ [ Motor RIP Core ] ──(Gestión de Color ICC) ──(Generación de Canales W / V) │ ▼ [ Capa de Abstracción de Drivers (HAL) ] ├──► [ Driver Impresora 1 (Ej....

I need an experienced Full Stack Developer to build a large-scale multi-tenant SaaS platform called CareerZ. It is a global education, jobs, tutoring, marketplace and payments platform. Key modules include LMS (courses, classes, exams), Institutions management, Job board, Tutoring system, Marketplace, Digital Wallet, Scholarships, Messaging, AI features, and complete Admin panel with role-based access. Looking for someone who has built similar complex multi-sided platforms before.

# Lead Backend Engineers & AI Automation Architects (Enterprise-Grade) ## Project Overview We are the engineering team behind RailCall, a governance-first automation layer for AI-driven workflows. We are seeking elite backend engineers and systems architects to help us build out advanced, enterprise-grade local agent programs and secure integrations. We have secured a $10,000 development budget for this specific architectural phase. We are looking to award milestone contracts to developers who can solve complex orchestration problems using our cryptographic execution engine. ## Core Development Focus Rather than simple API wrappers, this phase is dedicated to heavy backend engineering: **1. Secure Local Agent Programs** Building complex, autonomous agent workflows that execute stri...