Senior React Native Developer (Must: Node.js)

Santex is a global Certified B technology company as well as one of North America's fastest-growing companies, according to the Inc. 5000. It’s present in 18 countries and over 100 cities, and headquartered in Argentina with offices in the United States, Mexico, and Peru.

Its two service lines — AI Tech Consulting and AI-Optimized Engineering — help organizations comprehensively adopt technology, expand their capabilities, and improve business outcomes at scale.

The same approach defines its culture: Santex has 80.4% employee engagement (global average: 21%), 8% annual turnover (tech sector: 20–25%), 9,369 training hours invested in 2025 — more than double the global average —, and a 26.5% year-over-year reduction in carbon footprint, achieving carbon neutrality through offsetting.

Santex. A company with purpose and judgment. Yes, it's possible.

We are an Equal Opportunity Employer and are committed to fostering an inclusive and diverse workplace. We do not discriminate on the basis of race, color, religion, sex, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, genetic information, or any other characteristic protected by applicable law. All qualified applicants will receive consideration for employment without regard to any of these factors. We strongly encourage candidates from all backgrounds to apply.

Job description

We are looking for a skilled Software Engineer to join our Engineering team building full stack, cross-platform mobile and web applications. You will work closely with our Product team to translate requirements and designs into robust, well-tested code – taking ownership of engineering quality, architecture and delivery. You will use AI tools such as Claude or Github Copilot to accelerate and enhance the development workflow.

Essential Functions
• Build and ship cross-platform mobile apps using React Native and Expo (iOS and Android)
• Develop web applications in ReactJS, sharing business rule libraries with mobile apps
• Design, develop, and maintain APIs in NodeJS to support these applications
• Use Claude or Github Copilot as a development accelerator, generating code scaffolding, writing and reviewing tests, creating documentation and prototyping solutions
• Own the engineering lifecycle for your features: architecture, implementation, testing, CI/CD, and production monitoring
• Write clean, well-tested TypeScript code; maintain high standards through code review and documentation
• Optimize application performance for speed, responsiveness, memory, and offline capability
• Debug, troubleshoot, and resolve software defects and production issues
• Participate in Agile or product-centric delivery practices including sprint planning and retrospectives
• Learn and apply new technologies, tools, and patterns to improve system quality and team effectiveness

Skills and Abilities Required
• Experience developing software in JavaScript, Node.js, ReactJS, React Native.
• Familiarity with REST APIs and service-based architectures
• Experience working with databases and data persistence concepts
• Ability to follow established architecture and development standards
• Strong problem-solving and troubleshooting skills
• Ability to collaborate effectively within an engineering team
• Good communication skills and willingness to learn
• Experience in the QSR industry is preferred

Experience
• +5 years of professional software engineering experience
• Experience delivering production software preferred
• Experience working in Agile or team-based development environments preferred
• Advanced English Required

Education: Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience

Accountability / Scope
• People Management: No
• Scope: Individual contributor responsible for delivering assigned software components or features
• Decision Making: Makes implementation decisions within defined designs, standards, and guidance

Travel Requirements: Minimal to none