Senior Fullstack Developer

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

📋 Description

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

• Construct and oversee asynchronous background processing services (a .NET worker) designed for document-intensive workflows, managed through message queues.

• Design and support multiple Next.js/React applications for internal operations/back-office as well as external/customer-facing users, utilizing a shared package layer.

• Develop relational data models and produce efficient data access code using EF Core/PostgreSQL.

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

• Implement authentication and authorization across workforce and external/customer identity boundaries.

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

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

• Create human-in-the-loop tools for operators to review, amend, and approve AI-assisted extraction outcomes with full traceability.

• Write and sustain automated tests across the entire stack and contribute to the health of the CI/CD pipeline.

• Take part in code reviews, technical design discussions, and mentor less experienced engineers.

⛳️ Requirements

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

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

• Deep understanding 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 migrations and optimizing query performance.

• Strong skills in TypeScript and comfort working within a monorepo that contains shared, versioned internal packages.

• Familiarity with cloud infrastructure (Azure preferred; AWS/GCP equivalents considered) — messaging/queues, object storage, secrets management.

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

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

• Capability to work across the full stack without hand-offs — from database schema to API to UI.

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

🏝️ Benefits

• Competitive salary and performance-based bonuses.

• Comprehensive health, dental, and vision insurance.

• Flexible work hours and remote work options.

• Opportunities for professional development and continuous learning.

• Supportive and inclusive company culture.