Regular Fullstack Developer (.Net + Vue) - Freelancer

We are looking for a strong Regular Fullstack Developer (.Net + Vue) to collaborate with us on a freelance basis for a greenfield project in the retail industry. In this engagement, your main drive will be crafting modern, high-performance user interfaces in Vue.js, while leveraging your .NET background to build and integrate supporting backend services. You will collaborate within a focused, self-sufficient two-person engineering team (working alongside a Senior Developer) building a multi-tenant dashboard application from scratch. The client has developed a Proof of Concept (POC), which will serve purely as a reference for business logic to help us architect and write the new system from the ground up. If you have a strong .NET background, feel confident building user interfaces in Vue.js, and enjoy creating systems from the ground up, this project is a great fit Requirements What you will do Build from Scratch: Help design and develop a greenfield retail dashboard application using .NET/C# on the backend and Vue.js on the frontend. Integrate External Systems: Connect the application with external retail and ERP platforms such as Shopify, Patchworks, and RFID tracking systems. Work with Cloud Infrastructure: Implement multi-tenant architecture hosted on Azure with a SQL Server database. Translate POC into Production Code: Use an existing prototype as a business logic template to write clean, scalable, and maintainable production software. What we’re looking for Commercial Experience: 3+ years of hands-on experience as a Fullstack Developer working with .NET/C# and Vue.js. Product Thinking: Self-driven approach to feature design and technical implementation, capable of defining functional requirements and basic user flows independently to ensure fast, continuous delivery. Database & Cloud: Practical knowledge of SQL Server and core Azure services. Integrations: Experience working with REST APIs and third-party integrations (e.g., e-commerce platforms, ERP systems). Self-Reliance: Ability to take ownership of delivery within the agreed scope and collaborate effectively in a small, agile team. Language Skills: Good command of English (B2+) to ensure smooth communication. Availability: approx. 40h/week (B2B contract, hourly rate). Nice to Have: Experience with multi-tenant application architecture. Prior exposure to retail tech, e-commerce, or logistics domains. What do we mean by freelance? Read more at Monterail Tech Network Hourly rate : B2B contract: 65 - 100 PLN/h net + VAT