Fullstack developer (.NET/REACT)

Job Summary

We are looking for a Fullstack Developer to help build a mobile membership card solution that enables users to receive, store, and access digital membership cards seamlessly—similar to how ticketing platforms deliver passes directly to a user’s phone wallet.

In this role, you’ll work across the stack using React (frontend), .NET (backend), and SQL Server, contributing to a streamlined system that generates and distributes digital cards via email or SMS. While the product includes a mobile component, it will not require a traditional mobile app, focusing instead on lightweight, accessible experiences.

This is a great opportunity for someone who enjoys building practical, user-focused solutions with simple yet impactful functionality.

HOW WE WORK

We are a remote-first, cross-functional team focused on building high-quality software through collaboration, agility, and innovation. Our development approach emphasizes:

✅ Daily commits to ensure rapid iteration and continuous improvement. ✅ Autonomous problem-solving, with a bias toward action. ✅ Honest and constructive feedback, fostering a culture of learning. ✅ Agile methodology, with short, incremental development cycles.

WHO YOU ARE

You enjoy building clean, efficient systems that solve real-world problems without unnecessary complexity. You’re comfortable working across the full stack and can move between frontend and backend tasks with ease. You prefer pragmatic solutions over over-engineering and thrive in environments with straightforward requirements. You’re adaptable and can work with evolving clarity, especially in early-stage or loosely defined projects. You’re collaborative but capable of working independently with minimal oversight. You have a strong sense of ownership and take pride in delivering reliable, production-ready features.

WHAT WE OFFER

💵 USD Salary Compensation 🌍 100% Remote Work – Work from anywhere! 📈 Exciting, Diverse Projects – Work on impactful, real-world solutions. 🚀 Career Growth Opportunities – Expand your fullstack expertise across projects. 🤝 Supportive & Agile Team Environment – Collaborate with experienced engineers. 👊👊 Team Building Activities – Be part of a community that values connection and collaboration.

WHAT YOU’LL DO

Build a Digital Membership Card System – Develop functionality to generate and distribute digital membership cards. Develop Frontend Features – Use React to create simple, user-facing components for card access and interaction. Build & Maintain Backend Services – Implement APIs and business logic using .NET. Manage Data Storage – Work with SQL Server to store and retrieve membership and card data securely. Enable Card Distribution – Integrate email/SMS workflows to deliver cards to users. Ensure Mobile Compatibility – Optimize experiences so cards can be easily saved to mobile wallets. Collaborate with Internal Team – Work closely with engineers and stakeholders to align on functionality and delivery. Support Testing & Delivery – Partner with internal team members for validation and iteration.

WHAT YOU BRING

✅ 4+ years of experience as a Fullstack Developer. ✅ Strong experience with React for frontend development. ✅ Solid experience with .NET for backend services. ✅ Hands-on experience with SQL Server or similar relational databases. ✅ Experience building and consuming RESTful APIs. ✅ Familiarity with email/SMS integrations or notification systems (preferred). ✅ Understanding of responsive or mobile-friendly design principles. ✅ Ability to work in environments with minimal UI/UX requirements. ✅ Experience working in Agile teams with Git-based workflows. ✅ Strong problem-solving skills and ability to deliver simple, effective solutions.

READY TO APPLY?

If you’re a Fullstack Developer who enjoys building practical, streamlined solutions and working across modern web technologies, we’d love to hear from you. Apply now and help us deliver seamless digital experiences 🚀

Requires 4+ years of full-stack development experience, strong React and .NET skills, SQL Server or relational database experience, RESTful API experience, Agile and Git-based workflow experience.

Key Responsibilities

• building systems
• developing features
• managing databases

Skills & Tools

React, .NET, SQL Server, RESTful APIs, Git

Job Details

• Category: Software Development
• Seniority: Mid Level
• Commitment: Full Time, Contract
• Workplace: Remote — Mexico or South America
• Languages: English

About Winmill Software

A software company delivering cloud-based digital solutions. — Industry: Information Technology