? About Inallmedia.com

Inallmedia.com is a integral technology and design firm focused on building impactful digital solutions through remote, distributed teams across LATAM. We partner with international clients across industries, providing long-term technical expertise, product innovation, and team augmentation. When you join us, your contract and professional growth will be managed directly by In All Media, ensuring a stable, remote-first environment.

? Project Overview

We are looking for a high-performing Senior Fullstack Developer to join a long-term initiative focused on modernizing and scaling a complex enterprise application. You will be part of a high-visibility squad dedicated to rebuilding core modules using a modern tech stack (.NET Core 6+ and React 18+).

The project involves solving high-concurrency challenges, ensuring data integrity across financial/operational workflows, and implementing a modular frontend architecture. As a Senior contributor, you will bridge the gap between robust backend services and intuitive, high-performance user interfaces.

? Key Responsibilities

- Architect & Develop: Design and implement scalable, secure, and high-performance services using .NET Core 6+ and modern ReactJS patterns.
- Fullstack Delivery: Take ownership of features from database schema design with EFCore to frontend component implementation.
- Collaborate: Partner with cross-functional teams (Product, Design, and QA) to translate complex business requirements into elegant technical solutions.
- Technical Excellence: Participate in architectural discussions,



perform rigorous code reviews, and mentor junior/mid-level developers to maintain high standards.
- Continuous Improvement: Write clean, maintainable, and well-tested code while optimizing the performance and reliability of critical system components.

? Must-Have Skills

- Backend Mastery: Advanced proficiency in .NET Core 6 and above.
- Frontend Expertise: Strong experience with ReactJS 18 and modern hooks/functional components.
- Data Layer: Deep experience working with EFCore (Entity Framework) and SQL Server, including query optimization and schema design.
- Version Control: Solid understanding of Git and GitHub workflows (Pull Requests, branching strategies).
- Remote Collaboration: Proven experience working in Agile teams within 100% remote environments.
- Communication: Fluent English proficiency is mandatory for all daily meetings, documentation, and technical discussions.

? Nice-to-Have Skills

- Advanced Frontend: Familiarity with NextJS and managing Nx Monorepos.
- UI/UX Tools: Experience using MUI (Material UI) for rapid frontend component development.
- State & Data: Knowledge of Tanstack Query (React Query) for efficient server-state management.
- Testing: Experience with MSTest or other Unit Test Frameworks like xUnit.

? Time Zone & Collaboration

This role is 100% remote for talent based in LATAM. The team operates on EST (Eastern Standard Time). You are expected to have a significant overlap (at least 6 hours) with the EST time zone to ensure smooth synchronous collaboration.

📌 Fullstack Engineer .Net (1907) (México)
🏢 In All Media
📍 México