Cajero/A Part Time – Punto De Venta

Southbay; Rosario; On-site; ARS 1,800,000 - 2,600,000; Full time

Job summary

Southbay is seeking a dynamic Backend Developer with strong Python skills to build scalable backend systems and APIs. You will integrate third-party services via REST/GraphQL, model data in NoSQL and relational databases, and deploy services to AWS using Lambda and API Gateway. AI-powered tooling experience is a plus.

You will work in Rosario, Argentina, collaborating with a fast-moving team to deliver MVPs quickly while proposing efficient, pragmatic solutions for the backend.

Qualifications

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

Responsibilities

• Develop and maintain backend services and APIs for core application.
• Integrate third-party services using REST and/or GraphQL.
• Work with NoSQL and relational databases ensuring efficient data models.
• Deploy services to AWS (Lambda, API Gateway).
• Experiment with AI-based tooling for rapid development and MVPs.
• Contribute to backend architecture and development pipeline.

Skills

Python development

NoSQL databases

Relational databases

API integrations

English communication

Tools

MongoDB

DynamoDB

PostgreSQL

MySQL

REST

GraphQL

AWS Lambda

API Gateway

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.

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.

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.