Full-Stack POS Dev (React & .NET) – Onsite Lahore

AlphaGen Systems Inc.; Lahore; On-site; PKR 1,500,000 - 3,000,000; Full time

Job summary

AlphaGen Systems Inc. is seeking a Mid-Level Full-Stack Developer to work on a long-term project for a German client in the restaurant and retail sectors.

The project involves building a browser-based POS system from scratch with a phased rollout toward an admin portal and ERP functionality. The role focuses on implementing a stable POS application using React for the frontend and C#/.NET Core for the backend, with attention to clean architecture, testing, and integration with payment providers.

Qualifications

• 3–5 years of professional full-stack development experience.
• Strong proficiency in C#, ASP.NET Core, and Web API development.
• Experience with React, JavaScript/TypeScript, HTML, CSS.
• Experience with EF Core and relational databases such as SQL Server or PostgreSQL.
• Strong understanding of REST APIs, authentication, authorization, and third-party integrations.
• Knowledge of software architecture, object-oriented programming, SOLID principles, and common design patterns.
• Experience using Git and modern source-control workflows.
• Ability to write unit and integration tests.
• Ability to work independently, take ownership of assigned modules, and collaborate with technical and business stakeholders.
• Good written English communication skills.
• Availability to work full-time during Central European business hours.

Responsibilities

• Develop a responsive browser-based POS interface using React.
• Build secure and scalable backend services using C# and ASP.NET Core.
• Design and maintain REST APIs and relational databases.
• Develop modules for products, customers, sales, orders, receipts, users, roles, and permissions.
• Implement cloud synchronization, reporting, and administrative functionality.
• Integrate payment terminals, payment providers, webshops, online ordering systems, and food-delivery platforms.
• Work with the Senior Technical Lead to establish the technology stack and scalable system architecture.
• Write clean, modular, stable, testable, and well-documented code.
• Perform testing, debugging, maintenance, and continuous improvement.
• Maintain source code through GitHub and manage tasks through Jira or Azure DevOps.
• Communicate progress, technical issues, and requirements clearly in writing.

Skills

C#

ASP.NET Core

Web API

React

JavaScript

TypeScript

HTML

CSS

Entity Framework Core

SQL Server

PostgreSQL

REST APIs

Authentication

Authorization

Third-party integrations

Software architecture

OOP

SOLID principles

Design patterns

Git

Unit testing

Integration testing

English communication

CET hours availability

Tools

Git

Jira

Azure DevOps

Job description

AlphaGen Systems Inc. is seeking a Mid-Level Full-Stack Developer to work on a long-term project for a German client in the restaurant and retail sectors.

The project involves building a browser-based POS system from scratch with a phased rollout toward an admin portal and ERP functionality. The role focuses on implementing a stable POS application using React for the frontend and C#/.NET Core for the backend, with attention to clean architecture, testing, and integration with payment providers.