Regular Fullstack Developer (Vue.js + .Net) - Freelancer

Monterail; Kraków; On-site; PLN 83,000 - 152,000; Full time

Job summary

Monterail is seeking a strong Regular Fullstack Developer (Vue.js + .Net) to join us on a freelance basis for a greenfield retail dashboard project. You will craft modern, high-performance Vue.js frontends while applying your .NET backend skills in a two-person engineering team with a Senior Developer.

You will connect to external retail and ERP platforms (Shopify, Patchworks) and RFID trackers, implement multi-tenant Azure architecture with SQL Server, and transform a PoC into production code.

Qualifications

• 3+ years of hands-on fullstack experience with Vue.js and .NET (C#).
• Ability to design features independently and deliver with minimal supervision.
• Knowledge of SQL Server and core Azure services.
• Experience with REST APIs and third‑party integrations (Shopify, ERP).
• Strong teamwork in a small, agile setup and fluent English (B2+).

Responsibilities

• Build from scratch a greenfield retail dashboard using Vue.js on the frontend and .NET on the backend.
• Integrate external systems such as Shopify and Patchworks and RFID trackers.
• Work with Azure cloud and SQL Server to implement multi-tenant architecture.
• Translate PoC into production-ready code with clean, scalable solutions.

Skills

Vue.js

.NET (C#)

REST APIs

SQL Server

Azure

English (B2+)

Self-reliance

Tools

Shopify

Patchworks

Azure

Job description

We are looking for a strong Regular Fullstack Developer (Vue.js + .Net) to join us on a freelance basis for a greenfield project in the retail industry.

In this role, 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 be part of 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 are a Vue.js specialist who feels comfortable navigating .NET architectures and loves clean-slate development, this project is a great fit!

What you will do

• Build from Scratch: Help design and develop a greenfield retail dashboard application using C# / .NET 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 Vue.js and .NET (C#)
• 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 assigned tasks and collaborate effectively in a small, agile team.
• Language Skills: Good command of English (B2+) to ensure smooth communication.
• Availability: Full-time (B2B contract/hourly rates).

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