Java

Diseñar y construir un adapter ERP-agnóstico para el robot facturador: Definir una interfaz única (p. ej., ERPBillingGateway) con métodos: crearFactura, validarCliente, buscarProducto, aplicarImpuestos, obtenerFolio, consultarEstado... (Budget: $250 - $750 USD, Jobs: AI/RPA development, Electronics, ERP Software, Java, PHP, Python, Software Architecture)

About the Role We are looking for a passionate backend developer with strong fundamentals in Java, JPA/Hibernate, Spring Boot and a working understanding of Hadoop (MapReduce). You will be involved in... (Budget: ₹1250 - ₹2500 INR, Jobs: Data Processing, Database Management, Hadoop, J2EE, Java, MySQL, Oracle, PostgreSQL, REST API, Spring Boot)

I’m looking for a pair of polished, submission-ready academic projects built in Python. Project 1: an NLP application with a clean, intuitive UI. I’m flexible on the specific topic—sentiment analysis,... (Budget: ₹600 - ₹1500 INR, Jobs: Data Visualization, Java, JavaScript, Natural Language Processing, Python, Software Architecture, Streamlit, Time Series Analysis)

I’m finishing a small, same-day Android project and could use a second set of hands. The goal is to build a lightweight E-commerce app in Android Studio and wire in printing capabilities. I’ll share my... (Budget: $2 - $20 USD, Jobs: Android, Android App Development, Android Studio, API Development, iPhone, Java, Mobile App Development, Mobile Development)

I need a straightforward Android app that lets a user tap a button, scan a barcode with the camera, and save the captured data. Each scan should immediately populate an on-device table that the user can... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android App Development, App Development, Java, Kotlin, Mobile App Development, Mobile App Testing, Mobile Development, PHP)

I need a clean, well-structured Android application built from the ground up. The core requirements are straightforward yet critical: secure user authentication, reliable push notifications, and a smooth real-time chat module... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Android App Development, API Integration, Java, Kotlin, Mobile App Development, Mobile Development, PhoneGap)

I need a lightweight proof-of-concept that shows how real-time analytics can lift user engagement for a developer-focused product. The audience will judge the solution by its clarity, technical soundness, and how quickly we can spot and react to usage patterns... (Budget: ₹750 - ₹1250 INR, Jobs: C Programming, CSS, HTML, Java, JavaScript, Machine Learning (ML), MySQL, PHP, Python)

Trabajo con una aplicación Java que genera informes en Crystal Reports y, al exportar el reporte, aparece una excepción que impide que el archivo final se descargue correctamente en pdf. El problema parece... (Budget: €30 - €250 EUR, Jobs: Crystal Reports, Database Management, Database Programming, Java, MySQL, Report Writing, Software Architecture)

I need a web application, with an acceptable cross-platform option if the cost is realistic, designed to handle a specific workflow involving SMS or WhatsApp messages. The app should integrate directly with device messaging apps to receive messages from suppliers... (Budget: ₹750 - ₹1250 INR, Jobs: Android, API Integration, Data Extraction, Java, JavaScript, JSON, Mobile App Development, PHP, React.js, Web Application)

I recently bumped my React Native app from Android API 34 to API 35 and it now crashes on startup. I can reliably reproduce the issue and grab fresh logs, but I need an experienced React Native / Android developer to pinpoint the root cause and deliver a clean fix... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android App Development, Android SDK, API Development, Java, Mobile App Development, PHP, React Native)