Senior Full Stack Engineer

Somnio Software; United States; Remote; USD 110,000 - 165,000; Full time

Benefits offered by this job

Contractor basis

Remote work

Job summary

Somnio is hiring a Senior Full Stack Engineer to build and evolve products for clients. You will work across the stack with Next.js and React on the frontend and Python on the backend, in direct contact with the client’s team.

You’ll design APIs, implement features end to end, collaborate on architecture, and participate in code reviews. This is a 100% remote contractor role with 10–40 hours per week, requiring strong English communication.

Qualifications

• 5+ years of experience as a full stack or software engineer.
• Strong experience with React and Next.js (SSR, routing, performance).
• Strong experience with Python for backend work (FastAPI, Django or similar).
• Experience with relational databases (such as PostgreSQL) and REST APIs.
• Experience with Git, testing and CI/CD.
• Comfortable working directly with clients and explaining technical decisions.

Responsibilities

• Build features end to end, from the interface to the API and the database.
• Design and maintain APIs and backend services in Python.
• Build fast, accessible web apps with Next.js and React.
• Take part in technical decisions: architecture, code reviews and best practices.
• Work directly with the client to understand needs and propose solutions.
• Use AI tools to deliver faster and with better quality.

Skills

React

Next.js

Python

PostgreSQL

REST APIs

Git

CI/CD

Client communication

Tools

FastAPI

Django

Docker

Cloud (AWS/GCP/Azure)

Job description

Senior Full Stack Engineer (Next.js | React | Python)

About Somnio

Somnio is a software company born in Uruguay, recognized by Google as one of the top 10 Flutter companies in the world, and now on its way to becoming an AI Native Digital Product agency. We work remotely from different countries across Latin America, driven by one belief: dream big and build as a team.

About the role

We’re looking for a Senior Full Stack Engineer to build and evolve products for our clients. You’ll work across the whole stack, with Next.js and React on the frontend and Python on the backend, and you’ll be in direct contact with the client’s team.

What you’ll do

• Build features end to end, from the interface to the API and the database.
• Design and maintain APIs and backend services in Python.
• Build fast, accessible web apps with Next.js and React.
• Take part in technical decisions: architecture, code reviews and best practices.
• Work directly with the client to understand what they need and propose solutions.
• Use AI tools in your day-to-day work to deliver faster and with better quality.

What we’re looking for

• 5+ years of experience as a full stack or software engineer.
• Strong experience with React and Next.js (SSR, routing, performance).
• Strong experience with Python for backend work (FastAPI, Django or similar).
• Experience with relational databases (such as PostgreSQL) and REST APIs.
• Experience with Git, testing and CI/CD.
• Comfortable working directly with clients and explaining technical decisions.

Nice to have

• TypeScript.
• Cloud experience (AWS, GCP or Azure).
• Docker.
• Experience building products with LLMs or AI features.

How we work

We’re 100% remote. Our projects are global and involve direct contact with clients, which is why we look for an English level of B2 or higher, and some clients require C1 as a minimum. We work on a contractor basis.

This is a flexible project opportunity, with models from 10 to 40 hours a week.