Junior Full Stack Engineer (Python-focused)

SigmaSoftware2

Brasília, DF, Brazil Remote permanent

Posted: May 11, 2026

Job Description

Are you passionate about building scalable systems and working across both back-end and front-end layers? We are looking for a Junior Full Stack Engineer with a strong Python background to join our team. This role offers the opportunity to work on ERP customization, integrations, and API development for a dynamic partner-facing platform.

You will be part of Sigma Software, a company that values innovation, professional growth, and collaboration. This position is remote-friendly, giving you flexibility while staying connected with a highly skilled team.

Why join us? At Sigma Software, you will work on impactful projects, gain hands-on experience with modern technologies, and enjoy a supportive environment that fosters learning and career advancement.

CUSTOMER

Our Customer operates in the pet products marketplace sector, providing a partner-facing platform that streamlines workflows, improves data management, and enhances system integrations. Known for innovation and operational efficiency, the company delivers scalable solutions connecting diverse business systems and partners.

PROJECT

The project focuses on developing and maintaining a partner-facing platform integrated with a leading pet products marketplace. It involves ERP customization, system integrations, and API development to optimize backend processes and ensure seamless data exchange.

Key Technologies: Python, ERPNext/Frappe, REST APIs, React, AWS, MySQL/MariaDB

• Design, develop, and maintain scalable backend solutions using Python, focusing on ERPNext/Frappe and distributed system components
• Implement and maintain REST APIs and integrations between ERPNext, partner platforms, and downstream systems
• Enhance ERPNext/Frappe doctypes, workflows, permissions, and backend logic
• Build and support event-driven or asynchronous processes to improve system performance
• Create and execute unit tests, API tests, and support regression and performance testing
• Utilize modern frontend frameworks (React or similar) for UI components and API integrations
• Optimize solutions for scalability, reliability, and performance
• Troubleshoot and resolve issues across full-stack layers
• Collaborate with cross-functional teams to resolve production issues

• Experience in software development using Python
• Hands-on experience with ERPNext/Frappe for building and customizing business applications
• Experience in building multi-tier applications and designing REST APIs
• Strong understanding of OOP principles, design patterns, and data structures
• Experience with frontend frameworks such as React or Angular
• Experience working in Linux/Unix environments
• Practical knowledge of cloud services (AWS preferred)
• Familiarity with relational databases and data modeling (MySQL/MariaDB)
• Experience with system integrations and API-based architectures
• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field
• At least Upper - Intermediate level of English 

WILL BE A PLUS

• Experience with message queues (RabbitMQ, Kafka)
• Knowledge of CI/CD pipelines
• Experience with Docker or Kubernetes
• Familiarity with Agile/Scrum methodologies

PERSONAL PROFILE

• Strong ownership mindset and attention to detail
• Ability to work independently and in a team
• Good communication skills for cross-functional collaboration
• Problem-solving and analytical thinking

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