Senior React Native Developer

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.

We are seeking skilled Software Engineers passionate about delivering exceptional software experiences. As part of the Digital Banking team, this individual will design and build features that improve our clients’ customer experience, owning services end-to-end and collaborating closely with product managers and designers to create intuitive, impactful solutions.

The Software Engineer will simplify complex problems into scalable designs, uphold engineering best practices, and contribute to a culture of continuous improvement. Operating in a fast-paced Agile environment, they will consistently deliver high-quality, production-ready code and embrace continuous delivery. Ideal candidates are detail-oriented, driven to solve real problems, eager to learn, and committed to mentoring and excellence—striving for perfection while knowing when to ship.

Our mission is to deliver a leading, end-to-end consumer banking experience through a mobile-first, intuitive, and secure digital platform that enables financial institutions to personalize and scale services to meet their customers' evolving needs.

Our vision is to design and evolve a leading digital banking experience that simplifies financial tasks, empowers users with insights and control, and gives financial institutions the flexibility to launch, manage, and grow. With personalized experiences, a best-in-class feature set, and continuous innovation, we future-proof users through emerging technologies and ecosystem advancements.

• Implement features and deliver production-ready code
• Create technical documentation, system diagrams, and debugging reports
• Conduct performance optimizations and monitor key metrics

• Participate in agile planning events by providing technical insights and feasibility analysis
• Collaborate with Product Owners, Designers, and Engineers to translate business needs into features and technical solutions
• Offer input on technology enhancements, emerging tools, and product gaps to inform the roadmap and backlog
• Support definition of acceptance criteria to guide development and testing

• Design, develop, deploy, and maintain software solutions in an agile environment
• Write clean, scalable code aligned with best practices and engineering standards
• Collaborate with peers to implement user stories, resolve issues, and improve product functionality
• Engage in agile ceremonies such as daily scrums and product demos
• Create proof-of-concepts and run experiments to inform technical decisions
• Conduct peer code reviews for quality and knowledge sharing
• Continuously improve team processes and development workflows
• Stay current with emerging technologies, frameworks, and industry practices

• Monitor delivery metrics such as lead time and deployment frequency
• Identify and implement improvements to enhance delivery efficiency

• Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, or equivalent experience.
• 5+ Years in IT Industry with 3+ years of experience in building and delivering apps using React Native
• Minimum 2+ years of experience in iOS/Android
• Minimum 3+ years of experience in Spring Boot application development
• Expert in analyzing, designing, implementing, and troubleshooting mobile applications for highly transactional systems.
• Expert in mobile software development using React Native, Swift/Kotlin, Objective C, Xcode/Android Studio & Git.
• Languages: JavaScript, React JS, HTML, CSS, Swift/Kotlin, Objective C/Java, React Native, Java
• Experience in building React Native plugins
• Solid working knowledge on Redux, React, Expo, and Jest.
• Strong Problem Solving and Analytical Thinking.
• Proficient with Agile software development life cycle.
• Experience with REST APIs, XML & JSON.
• Experience in writing unit test cases
• Experience with Agile development methodology.
• Excellent communication and team player with can-do attitude.
• Advanced English Required

• Champion of Agile Scrum methodologies and SAFe frameworks
• Experience with CI/CD systems such as Jenkins or GitHub CI
• Deep understanding of secure solution design principles
• Familiarity with concurrent backend environments and multithreading
• Experience with test-driven development frameworks or automated testing tools for mobile.
• Possesses cross functional expertise to implement DevOps, CI/CD practices.
• Exposure to AI IDE like Cursor, GitHub Copilot.