Senior Fullstack Developer

This is a fully remote position, open to applicants in Mexico.

📋 Description

• Design and develop business logic and domain modules within an ASP.NET Core API, adhering to Clean Architecture principles (Domain, Application, Infrastructure, API layers).

• Create and manage asynchronous background processing services (a .NET worker) tailored for document-intensive workflows, utilizing message queues for coordination.

• Develop and sustain multiple Next.js/React applications that support internal operations/back-office tools and external/customer-facing portals, sharing a unified package layer.

• Design relational data models and craft efficient data access code utilizing EF Core / PostgreSQL.

• Integrate with cloud-native infrastructure components, including message queues, blob storage, secrets management, and managed identity providers.

• Implement authentication and authorization protocols across various identity boundaries (workforce versus external/customer identity).

• Collaborate on API contracts and shared TypeScript types utilized by front-end applications.

• Engage in architectural decisions that ensure a growing monolith remains modular, maintainable, and well-tested.

• Develop tools that enable operators to review, correct, and validate AI-assisted extraction outcomes, maintaining full traceability from initial intake to final approval.

• Author and maintain automated tests throughout the stack and contribute to the health of the CI/CD pipeline.

• Participate in code reviews, technical design discussions, and provide mentorship to less experienced engineers.

⛳️ Requirements

• Over 8 years of professional software development experience, with extensive expertise in C# / .NET (ASP.NET Core).

• More than 4 years of experience in building production front-end applications using React, including Next.js (App Router, server components/actions, route handlers).

• Strong grasp of Clean/Layered Architecture, domain modeling, and the separation of concerns in complex back-end systems.

• Proficiency with relational databases and ORMs (EF Core or equivalent), including experience with migrations and optimizing query performance.

• Solid TypeScript expertise and familiarity with working in a monorepo that features shared, versioned internal packages.

• Experience with cloud infrastructure (Azure preferred; AWS/GCP equivalents are acceptable) — including messaging/queues, object storage, and secrets management.

• Experience in implementing or integrating OAuth2/OIDC-based authentication, ideally with enterprise identity providers (e.g., Microsoft Entra ID or similar).

• Strong discipline in automated testing: unit, integration, and contract testing for both back end and front end.

• Comfortable working across the entire stack without hand-offs — from database schema to API to UI.

• Excellent communication skills and experience working within a small, senior, high-autonomy engineering team.

🏝️ Benefits

• Competitive salary and performance-based bonuses.

• Comprehensive health, dental, and vision insurance.

• Flexible working hours and remote work options.

• Opportunities for professional development and continuing education.

• A collaborative and inclusive work culture.