Caja Part Time | Tienda Barracas

Paradox; Rosario; On-site; ARS 1,800,000 - 3,000,000; Full time

Job summary

Paradox in Rosario is seeking a Backend Developer to design and maintain scalable Python-based backend systems. You will build APIs, integrate with REST/GraphQL, and work with MongoDB/DynamoDB and PostgreSQL/MySQL.

You will deploy services to AWS and explore AI-powered tooling to speed MVP development, bringing practical, high-impact improvements to the backend stack.

Qualifications

• 4+ years of Python development experience.
• Experience with NoSQL databases such as MongoDB or DynamoDB.
• Proficiency with relational databases such as PostgreSQL and MySQL.
• Experience integrating REST and/or GraphQL APIs.
• Strong English communication (Advanced/Bilingual).
• Nice-to-have: Node.js or Java.
• Familiarity with AWS services like Lambda and API Gateway.
• Awareness of ML/Agentic AI or related tech.
• Experience using AI-powered code generation tools.

Responsibilities

• Develop and maintain backend services and APIs for our core application.
• Integrate third-party services using REST and/or GraphQL.
• Work with NoSQL and relational databases, ensuring efficient data modeling and query performance.
• Collaborate with the team on deploying services to AWS (Lambda, API Gateway, etc.).
• Suggest and experiment with AI-based tooling for rapid development and smart code generation.
• Bring fresh ideas and pragmatic solutions to enhance the backend architecture and development pipeline.

Skills

Python

NoSQL

SQL

REST APIs

GraphQL

English

Node.js

Java

AWS Lambda

AI Code Gen

Machine Learning

Tools

MongoDB

DynamoDB

PostgreSQL

MySQL

Job description

We are seeking a dynamic, street-smart Backend Developer with strong Python experience and a passion for problem-solving using modern AI tools and approaches. This role is ideal for someone who can think critically, move fast, and contribute to building scalable backend systems, while also suggesting innovative and efficient solutions to help us achieve MVPs quickly.

• Develop and maintain backend services and APIs for our core application.
• Integrate third-party services using REST and/or GraphQL.
• Work with NoSQL and relational databases, ensuring efficient data modeling and query performance.
• Collaborate with the team on deploying services to AWS (Lambda, API Gateway, etc.).
• Suggest and experiment with AI-based tooling for rapid development and smart code generation.
• Bring fresh ideas and pragmatic solutions to enhance the backend architecture and development pipeline.

Technical Requirements: Must Have:

• More than 4 years of experience in Python development.
• Experience with NoSQL databases (e.g., MongoDB, DynamoDB).
• Proficiency in Relational Databases (e.g., PostgreSQL, MySQL).
• Experience with API integrations using REST and/or GraphQL.
• Strong communication skills in English (Advanced/Bilingual).

Nice to Have:

• Experience with Node.js and/or Java.
• Familiarity with AWS services, especially Lambda and API Gateway.
• Awareness or hands-on experience with Machine Learning, Agentic AI, or similar emerging technologies.
• Experience using AI-powered code generation tools to enhance development speed and MVP creation.