Senior Full-Stack Engineer - AI-Driven, Remote-First Build

3Pillar; Toluca; Remote; MXN 1,292,000 - 2,216,000; Full time

Benefits offered by this job

Major Medical Insurance

Life Insurance (optional)

Home office

Udemy - E-learning

26 days Christmas bonus

Discretionary Time Off

Job summary

3Pillar invites you to join a fast-moving, AI-enabled software team building a brand-new MVP. As a Sr Full-Stack Engineer, you'll craft backend in C#/.NET Core and frontend in React/TypeScript, with daily delivery flows and AI-assisted coding.

You’ll own scalable cloud-native services on AWS, implement secure APIs, and collaborate across LatAm and US time zones in a remote-first environment. The role emphasizes high-quality architecture, automated testing, and continuous learning.

Qualifications

• 5+ years building production apps with C#/ .NET Core and React (TypeScript).
• Daily use of AI-assisted coding tools (Cursor, Copilot, Claude Code).
• Cloud-native AWS with Docker containerization.
• Strong database and API design with PostgreSQL or MS SQL Server and ORMs.
• English communication for daily cross-functional work; LatAm time zone alignment.

Responsibilities

• AI-accelerated feature delivery using AI coding tools to complete user stories daily.
• Backend development of scalable microservices with C#/.NET Core, Web APIs, EF Core.
• Frontend development with React, TypeScript, Hooks, Context API, Zustand/Redux.
• Cloud infrastructure and pipelines on AWS with Lambda, SQS/SNS, Cognito, ECS, Docker.
• Document management features and e-signature integrations.
• Quality assurance with automated reviews, static analysis, and unit testing.

Skills

C# / .NET Core

React (TypeScript)

AI-assisted engineering

AWS

REST APIs

English communication

Tools

Claude Code

GitHub Copilot

Cursor

OpenAI

Docker

Entity Framework Core

PostgreSQL

MS SQL Server

Job description

3Pillar invites you to join a fast-moving, AI-enabled software team building a brand-new MVP. As a Sr Full-Stack Engineer, you'll craft backend in C#/.NET Core and frontend in React/TypeScript, with daily delivery flows and AI-assisted coding.

You’ll own scalable cloud-native services on AWS, implement secure APIs, and collaborate across LatAm and US time zones in a remote-first environment. The role emphasizes high-quality architecture, automated testing, and continuous learning.