Senior Python Backend Engineer: APIs & Distributed Systems

Ethereum Technologies; Phoenix (AZ); On-site; USD 96,000 - 124,000; Full time

Job summary

Ethereum Technologies in Phoenix, AZ is seeking an experienced Python Backend Developer to design, build, and maintain scalable backend applications and services.

You will leverage Python, RESTful APIs, PostgreSQL, and asynchronous programming to deliver reliable, secure backend solutions using Flask, FastAPI, or Django.

Candidates will troubleshoot, own deliverables, support CI/CD, containers, and cloud deployments, and explore AI-driven workflow automation where applicable.

Qualifications

• 8+ years of experience in Python backend development.
• Strong proficiency in Python, OOP, and asynchronous programming.
• Hands-on experience with Flask, FastAPI, or Django.
• Strong knowledge of RESTful APIs and backend services.
• Experience with PostgreSQL and SQL optimization.
• Experience with API integrations, authentication, logging, and error handling.
• Understanding of asynchronous processing and distributed systems.
• Experience with Pytest or unittest for unit and integration testing.
• Proficiency in Git, pull requests, and code review workflows.
• Strong debugging, analytical, and problem-solving skills.

Responsibilities

• Design, develop, and maintain backend applications and RESTful APIs using Python.
• Build scalable backend services using Flask, FastAPI, or Django.
• Develop and optimize SQL queries, database schemas, and performance for PostgreSQL.
• Implement API integrations, authentication, error handling, logging, and troubleshooting.
• Develop asynchronous processes, background jobs, and distributed services.
• Write and maintain unit and integration tests.
• Collaborate with cross-functional teams through Git, pull requests, and code reviews.
• Support CI/CD pipelines, containerization, and cloud-based deployments.
• Investigate technical issues and implement reliable, secure solutions.
• Explore AI integrations, MCP, and AI-driven workflow automation where applicable.

Skills

Python backend

Async programming

REST APIs

Testing

Git workflows

Debugging

Problem solving

Tools

Flask

FastAPI

Django

PostgreSQL

SQL

API authentication

Job description

Ethereum Technologies in Phoenix, AZ is seeking an experienced Python Backend Developer to design, build, and maintain scalable backend applications and services.

You will leverage Python, RESTful APIs, PostgreSQL, and asynchronous programming to deliver reliable, secure backend solutions using Flask, FastAPI, or Django.

Candidates will troubleshoot, own deliverables, support CI/CD, containers, and cloud deployments, and explore AI-driven workflow automation where applicable.