Senior Python Backend Engineer - APIs & Microservices

Valiant Technologies LLC; Phoenix (AZ); On-site; USD 84,000 - 120,000; Full time

Job summary

Valiant Technologies LLC is seeking an experienced Python Backend Developer to design, build, and maintain scalable backend applications and services in Phoenix. The role emphasizes strong Python skills, RESTful APIs, and PostgreSQL, with experience in asynchronous processing and distributed systems.

You will proactively troubleshoot, own deliverables, and contribute to technical improvements, collaborating with cross-functional teams and supporting CI/CD, containerization, and cloud

Qualifications

• 8+ years of experience in Python backend development.
• Strong proficiency in Python, object-oriented programming, and asynchronous programming.
• Hands-on experience with Flask, FastAPI, or Django.
• Strong knowledge of RESTful APIs and backend services.
• Experience with PostgreSQL, SQL queries, database design, and 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 deployments.
• Investigate technical issues and implement reliable, secure solutions.
• Explore AI integrations, MCP, and AI-driven workflow automation where applicable.

Skills

Python backend development

Asynchronous programming

RESTful APIs

Unit testing (pytest/unittest)

Git & code reviews

Debugging & problem-solving

Tools

Flask

FastAPI

Django

PostgreSQL

Pytest

Git

CI/CD tooling

Docker

Kubernetes

Temporal

Apache Airflow

Celery

Job description

Valiant Technologies LLC is seeking an experienced Python Backend Developer to design, build, and maintain scalable backend applications and services in Phoenix. The role emphasizes strong Python skills, RESTful APIs, and PostgreSQL, with experience in asynchronous processing and distributed systems.

You will proactively troubleshoot, own deliverables, and contribute to technical improvements, collaborating with cross-functional teams and supporting CI/CD, containerization, and cloud