Full Stack Engineer (TypeScript/Node.js) - REMOTE - ONLY MEXICO

Scalepex; Mexico; Remote; PHP 5,552,127 - 9,253,546; Full time

Benefits offered by this job

100% Remote

Contractor scheme

Job summary

Scalepex is seeking a Senior Full Stack Engineer to lead backend and platform design for a modern multi-tenant SaaS product. You will own core services, database design, and API integrations while leveraging AI-assisted development tools to accelerate delivery.

You’ll work in a fast-growing B2B environment with a strong emphasis on reliability, security, and performance. Remote, contractor-friendly role with involvement during US business hours.

Qualifications

• 5+ years of Full Stack or Backend development experience.
• Expert knowledge of TypeScript and JavaScript.
• Strong experience with Node.js.
• Experience with Next.js App Router.
• Advanced PostgreSQL knowledge: schema design, raw SQL, migrations.
• Experience building scalable SaaS applications with multi-tenant architecture.
• OAuth 2.0 and Webhooks integration experience.
• Automated testing and CI/CD familiarity.
• Excellent written English and ability to work US hours.

Responsibilities

• Design, develop, and maintain scalable backend services using Node.js and TypeScript.
• Own PostgreSQL database architecture, schema design, migrations, and performance optimization.
• Build and maintain REST APIs, OAuth integrations, and third-party platform connections.
• Develop and improve multi-tenant SaaS infrastructure and background job schedulers.
• Write automated unit and end-to-end tests and audit systems for reliability and security.

Skills

TypeScript

JavaScript

Node.js

Next.js App Router

PostgreSQL

Query optimization

ORM Prisma

REST APIs

OAuth 2.0

Webhooks

Playwright or Puppeteer

Background jobs

Automated testing

Git & PR workflows

English

US business hours

Tools

Prisma ORM

Job description

About Scalepex

Scalepex is a nearshore partner that empowers businesses to scale efficiently and effectively through exceptional services. With a strong focus on customer success, innovation, and cultural alignment, we support companies in building high-performing teams across industries.

At Scalepex, we believe in fostering an environment where our people can thrive, grow their careers, and make a real impact.

Job Summary

We are looking for a Senior Full Stack Engineer to join a fast-growing B2B SaaS startup building a modern multi-tenant platform that automates financial and operational workflows.

This is a highly autonomous role where you\'ll own core platform development, backend architecture, database design, integrations, and platform scalability. You\'ll work in an AI-native engineering environment, leveraging modern AI coding tools to deliver high-quality software quickly.

Responsibilities

• Design, develop, and maintain scalable backend services using Node.js and TypeScript.
• Own PostgreSQL database architecture, schema design, migrations, and performance optimization.
• Build and maintain REST APIs, OAuth integrations, and third-party platform connections.
• Develop and improve multi-tenant SaaS infrastructure.
• Create reliable background jobs, schedulers, and asynchronous workflows.
• Write automated unit and end-to-end tests.
• Audit existing systems and propose scalable technical solutions.
• Improve application reliability, performance, and security.
• Collaborate with the team during US business hours.
• Leverage AI-assisted development tools to increase development speed while maintaining high quality.

Must Have

• 5+ years of Full Stack or Backend software development experience.
• Expert knowledge of TypeScript and JavaScript.
• Strong experience with Node.js.
• Experience with Next.js (App Router).
• Advanced PostgreSQL knowledge:
• Schema design
• Raw SQL
• Query optimization
• Database migrations
• Experience using Prisma ORM (or similar ORM).
• Experience building scalable SaaS applications.
• Multi-tenant architecture experience.
• Experience building REST APIs.
• OAuth 2.0 and Webhooks.
• Playwright or Puppeteer.
• Background job schedulers (Cron, BullMQ, pg-boss or similar).
• Automated testing experience.
• Git and Pull Request workflows.
• Excellent written English.
• Availability during US business hours.

Nice to Have

• Experience working with financial systems.
• React 19.
• Python.
• Linux, Nginx, PM2.
• CI/CD pipelines.
• PgBouncer.
• Experience with Model Context Protocol (MCP).
• Experience with Cursor, Claude Code, Copilot, or similar AI development tools.

• Contractor scheme
• 100% Remote