? About is a general 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 React JS 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 React JS 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 Git Hub 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 Next JS 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 x Unit .
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.
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📌 Fullstack Engineer .Net (1907) (Tijuana)
🏢 In All Media
📍 Tijuana