Senior Python Backend Engineer

United States only

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At ioet, we partner with global companies to build high-impact software solutions. Our team is distributed across Latin America and works on complex technical challenges for fast-growing U.S. clients. We also invest heavily in AI skills and provide space for continuous learning and experimentation.

We are seeking a Senior Python Backend Engineer to join Argon, the core supply-chain engineering team of our largest U.S. client. Argon maintains and evolves the central platform that powers order routing, logistics, and fulfillment at scale. The team is now rebuilding this platform to be more modular, resilient, and future-proof, and you’ll play a key role in that transformation.

This role is ideal for someone hands-on, technically solid,proactive, and curious. Someone who enjoys solving complex problems, collaborating with strong senior engineers, and working in fast-moving environments.

What You’ll Do:

Design, build, and maintain backend services in Python, contributing directly to high-scale production systems
Work extensively with AWS DynamoDB, including streams, modeling, performance tuning, and real-world data workflows
Develop even-driven systems using tools such as Kafka
Write clean, well-tested code using Pytest, mocks, and work with TDD practices
Use IaC tools to support infrastructure tasks
Work closely with experienced senior engineers and contribute to a culture of ownership, continuous improvement, and learning
Learn, experiment, and apply AI tools in your daily work as part of ioet’s learning initiatives

Requirements:

5+ years of professional experience in software development
Python expert level with solid knowledge of best practices
Real production experience with DynamoDB
Experience with Docker containerization and environment management
AWS (Core), proficiency with services like S3 and SQS
Familiarity with Pytest, Mocker, or other testing tools for unit and integration testing, TDD experience, or a solid testing mindset
Experience with Infrastructure as Code (IaC)
Strong English communication skills - Minimum B2 level proficiency
Send your application and CV in English (mandatory)
Based in Latin America