Middle/Senior Front-End Developer (React/TypeScript)

SigmaSoftware2

São Paulo, SP, Brazil Remote permanent

Posted: May 18, 2026

Required Skills

Job Description

Are you passionate about building exceptional user experiences and working with cutting-edge technologies? We are looking for a Middle or Senior Front-End Developer to join our growing team in Latam. In this role, you will work on building and maintaining modern web applications using React/TypeScript. You will collaborate closely with our backend developers and other team members to create seamless user experiences. 

CUSTOMER

Our customer operates in the pet products marketplace sector, delivering a partner-facing platform that streamlines workflows, improves data management, and enhances system integrations. Known for innovation and operational efficiency, the company offers scalable solutions that connect diverse business systems and partners, enabling seamless collaboration and growth in a rapidly expanding market.

PROJECT

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

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

• Develop and maintain scalable web applications using React.js and TypeScript
• Build responsive, user-friendly, and reusable UI components following best practices
• Integrate frontend applications with APIs and backend services
• Collaborate with product, backend, and UX teams to clarify requirements and deliver solutions
• Write clean, maintainable, and efficient code with strong testing and debugging practices
• Troubleshoot and resolve issues across frontend applications and user flows
• Participate in code reviews and contribute to continuous improvement and knowledge sharing
• Work independently in a fast-paced environment, supporting estimations, problem-solving, and technical discussions

• 5+ years of experience in front-end development with React.js
• Strong understanding of JavaScript (ES6+), TypeScript, Next.js, HTML5, and CSS3
• Hands-on experience with GraphQL (Apollo Client or similar)
• Familiarity with React Hooks, Context API, and Redux, including experience with Redux-Saga (optional)
• Experience with RESTful APIs and third-party integrations
• Understanding of component-based architecture and state management
• Knowledge of performance optimization and debugging techniques

WILL BE A PLUS:

• Experience with ERP systems
• Familiarity with UI/UX design principles

PERSONAL PROFILE:

• Proactive and self-motivated
• Strong attention to detail
• Excellent communication skills
• Ability to work in cross-functional teams
• Adaptable to fast-paced environments

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