Senior Full Stack Engineer- Remote Latam

Remote

Full Time

Experienced

Job Title: Senior Full Stack Engineer
Location: Remote in Latam
Type: Full-Time

Our client is a venture-backed seed-stage startup that designs targeted heating systems that heat people, not spaces. Our autonomous system delivers targeted heat exactly where it’s needed, keeping people optimally comfortable while cutting energy waste. We're launching our first product with the hospitality industry in Fall of 2025.

We’re seeking a highly capable Full Stack Software Engineer with strong backend experience to support our small, fast-moving team. This is a hands-on role building modern systems with asynchronous APIs, diverse databases, and cloud deployment pipelines. You’ll work closely with 2–3 engineers and be responsible for writing clean, reliable, and maintainable code that supports our core platform.

What You’ll Work On

Build and maintain FastAPI-based backend services with Pydantic and SQLAlchemy
Integrate with MySQL, PostgreSQL, MongoDB, and TimescaleDB
Implement API authentication and security layers using OAuth2, JWT, and API keys
Support background processes and messaging via MQTT
Develop and support data visualizations via Grafana and modern frontend frameworks (React, Next.js)
Maintain CI/CD pipelines with GitHub Actions, Docker, Ansible
Deploy and monitor services on AWS EC2
Ensure system reliability through testing with pytest and structured QA

Tech Stack

Backend & Database:

FastAPI, Pydantic, SQLAlchemy
Async/sync DB operations (MySQL, PostgreSQL, MongoDB, TimescaleDB)
Pytest for QA
Google OAuth2, JWT, API keys
MQTT for messaging
Background task management

Frontend:

Grafana
React, Next.js

DevOps & Tools:

Docker, Docker Compose, GitHub Package Repo
Ansible, GitHub Actions
AWS EC2
Git, VSCode Remote SSH, Linux basics

You Should Have

Proven experience writing stable, production-ready code that can be maintained by small teams
Familiarity working with asynchronous Python frameworks and multiple types of databases
Good communication skills, especially in remote and distributed settings
A bias toward action, documentation, and code clarity
5+ years of experience working on multiple teams and showing clear growth trajectory
Early stage start-up experience

Nice to Have

Experience working in energy, hardware, or IoT-adjacent environments
Knowledge of TimescaleDB for time-series data
Comfort with real-time systems and distributed architecture

What We Offer

Competitive Salary: Earn a USD salary that matches your skills and experience.
Full-Time Remote
Paid Time Off: We value work-life balance, offering PTO so you can recharge.
Private Health Insurance. Your health matters, and we help with a subsidy to cover your care.
Salary Reviews every year!
Paid Training and Certification

Ready to put your puzzle-solving skills to the test? Join our team today!

Want to learn more about us?

LinkedIn: Puzzle
Instagram: @puzzle.tech_

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Which databases have you worked with? Please indicate your level of experience with each:

MySQL
PostgreSQL
MongoDB
TimescaleDB*

Have you implemented API authentication and security layers such as OAuth2, JWT, or API keys?*

How long have you used FastAPI?*

How do you use Pydantic in your FastAPI projects?*

What testing strategies do you apply for FastAPI applications?*

Have you worked with frontend frameworks such as React or Next.js?*

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