Senior Full Stack Engineer (Python, FastAPI & AI-Assisted Development) – Remote
Job Type: Full-Time, Remote
Client Business Hours (flexibility required for sprint reviews, deployments, and production support)
At Pavago, one of our clients is hiring a Senior Full Stack Engineer to architect and build a modern tax filing platform from the ground up.
This is more than a software engineering role.
You'll own the architecture, backend services, frontend experience, and technical direction of a mission‐critical platform where security, accuracy, and reliability are essential.
You'll leverage AI-assisted development tools such as Cursor and Claude Code to accelerate delivery while maintaining exceptional code quality and engineering standards.
Full-Stack Application Development
Design, build, and maintain production‐grade web applications.
Develop secure backend services using Python and FastAPI.
Build responsive, intuitive frontend interfaces for complex workflows.
Integrate frontend and backend systems seamlessly.
Design scalable data models and service boundaries.
Build systems designed for long‐term growth and performance.
Backend Development
Develop secure REST APIs using FastAPI.
Optimize API performance and backend scalability.
Frontend Development
Develop reusable UI components using modern JavaScript frameworks.
Integrate frontend applications with backend APIs.
Improve usability while maintaining performance and accessibility.
Use AI to accelerate coding, debugging, testing,



and documentation.
Testing, Quality & Reliability
Unit tests
Integration tests
End‐to‐end tests
Maintain high code quality standards.
Security & Data Integrity
Participate in sprint planning, code reviews, and technical discussions.
High‐quality features delivered on schedule.
Secure, reliable, and scalable application performance.
Strong automated test coverage.
You care deeply about code quality, scalability, and maintainability.
5+ years of professional Full Stack Software Engineering experience.
~ Python
~ FastAPI
~ Strong frontend development experience with modern JavaScript frameworks.
PostgreSQL or similar relational databases
Excellent written and verbal English communication skills.

Tax software
Experience designing scalable software architecture.
Python
FastAPI
PostgreSQL
Modern JavaScript Frameworks
Design and develop backend APIs and frontend features.
Use AI tools to accelerate development and testing.
Review pull requests and maintain code quality.
You'll architect, build, and continuously improve a secure, scalable software platform while owning technical execution from system design through production deployment.
Feature delivery quality and timeliness.
Automated test coverage.
Code quality and maintainability.
Technical documentation quality.
Fully remote role with versátil collaboration.
Technical Lead
Software Architect

Spark Hire Intro Video (3–5 minutes)
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📌 Senior Full Stack Developer (Ciudad de México)
🏢 Pavago
📍 Ciudad de México