Full-Stack Developer
Joins Ethara's tech team in Abu Dhabi to build a new Point of Sale platform end to end: C#/.NET backend services, React/TypeScript frontends, SQL databases and Android apps, with payment gateway, card-terminal and offline checkout integrations, using CI/CD and AI-assisted development tools.
- Compensation
- Not disclosed
- Location
- Abu Dhabi, United Arab Emirates
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Not specified
- Experience
- 4+ years
- Category
- Fullstack
- Posted
Skills
Must have
- 4+ years developing production-grade full-stack applications
- Strong experience in C#/.NET, ASP.NET Core Web API, Entity Framework Core and REST API development
- Strong proficiency in React, TypeScript, JavaScript and modern frontend frameworks
- 5+ years of experience with .NET
- 5+ years of experience with modern React
- Experience with SQL Server and PostgreSQL, including database design, query optimisation, indexing and performance tuning
- Knowledge of Redis, real-time services, SignalR/WebSockets and background processing
- Working knowledge of PCI DSS principles and secure payment architecture
- Experience with Microsoft Azure, Azure DevOps, Git and CI/CD pipelines
- Knowledge of automated testing frameworks, secure coding standards, monitoring and observability tools
- Practical experience using AI-assisted development tools such as Claude Code, Cursor or GitHub Copilot
- Ability to develop technical specifications, review AI-generated code and maintain ownership of deliverables
- Strong analytical thinking, problem-solving skills and attention to detail
- Excellent communication, collaboration and technical documentation skills
- Bachelor's degree in Computer Science or related discipline, or equivalent practical experience
Nice to have
- Experience with payment gateway integrations, POS systems, retail technology or financial transaction processing
- Familiarity with card-present payment terminals, payment APIs, refunds, reversals, tokenisation and settlement reconciliation
- Experience integrating POS hardware such as Android payment terminals, receipt printers, barcode scanners and peripherals
- Android development experience using Kotlin, Jetpack Compose and offline-first architecture
Full description
Overview:
We are looking for an experienced Full-Stack Developer to join our technology team and contribute to the design, development and maintenance of enterprise web, backend and mobile applications, with a strong focus on developing a new Point of Sale (POS) platform.
The successful candidate will be responsible for delivering end-to-end solutions across frontend, backend and database layers, including in-store and mobile checkout systems integrated with payment providers and card-acceptance hardware.
This role requires strong expertise in C#/.NET, React, TypeScript, SQL and modern software engineering practices, along with the ability to build secure, scalable and reliable applications. Experience in POS systems, payment integrations and AI-assisted development workflows is particularly important.
Duties & Responsibilities:
- Design, develop, test and maintain enterprise web applications, REST APIs, real-time services and mobile applications.
- Deliver end-to-end features across frontend, backend and database layers, ensuring quality through automated testing.
- Develop and enhance POS functionality, including cart management, pricing, discounts, promotions, VAT, split payments, refunds, voids, cash management and end-of-day reconciliation.
- Integrate payment gateways, acquirers, card terminals, digital wallets and Android-based Tap to Pay solutions.
- Design secure and reliable payment flows, including transaction handling, timeout management, reversals, duplicate-charge prevention and settlement reconciliation.
- Integrate POS hardware, including Android terminals, receipt printers, barcode scanners, cash drawers, customer displays and other peripherals.
- Develop offline-capable checkout solutions with reliable transaction synchronisation when connectivity is restored.
- Build and optimise scalable backend services, APIs and SQL databases to support high-volume transactions.
- Develop responsive frontend applications using React, TypeScript and modern UI frameworks.
- Implement and maintain integrations with external systems, ensuring reliable data exchange, error handling and recovery mechanisms.
- Apply secure coding practices, including role-based access control, audit logging, secrets management and secure authentication.
- Maintain CI/CD pipelines and support application deployment, monitoring, troubleshooting and production stability.
- Collaborate on system architecture, technical specifications, documentation and code reviews.
- Utilise AI-assisted development tools to accelerate delivery while maintaining code quality, security and accountability.