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Java Developer - Smart POS & Digital Payments in Ireland (Freelance)

Posted 20 hours 26 minutes ago by Westhouse Consulting GmbH

Contract

Not Specified

Other

Limerick, Limerick, Ireland

Job Description

Java Developer - Smart POS & Digital Payments

General information
Reference: 172326
Location: 5 Days Limerick
Start: 24.02.2025 (ASAP)
Volume: Full time (100%)
Duration: 31.12.2025 + Option
Languages: English

Tasks:

POS Terminal Development & Card Payment Integration - Contactless, mobile, and chip-card transactions
Digital Payment Processing - Expertise in Apple Pay, Google Pay, NFC & QR code transactions
Omnichannel Payment Solutions - Development for retail POS, E-commerce, and mobile platforms
Security & Compliance - Implementation of PCI DSS, PSD2, Tokenization, and encryption standards
Custom API & SDK Development - Tailored Java-based solutions for seamless integration into POS systems, mobile apps, and E-commerce platforms

Tech Stack - Java as Core Language

Programming Languages: Java (main), Kotlin, Swift, JavaScript, TypeScript, Python
Java Frameworks: Spring Boot, Quarkus, Jakarta EE, Micronaut
Mobile Development: Android (Java/Kotlin), Flutter
Cloud & Infrastructure: AWS, Google Cloud, Microsoft Azure, Docker, Kubernetes
Payment Technologies: EMV, NFC, Tokenization, PCI DSS Compliance, HSM Integration
APIs & Integrations: REST, GraphQL, WebSockets, ISO 8583 (financial transactions)
Databases: PostgreSQL, MySQL, MongoDB, Firebase