Software Engineer III (Mobile - React Native)

CSI • Austin, TX

3d

About The Position

Software Engineer III designs, codes, tests, and debugs scalable mobile applications using React Native and TypeScript; maintains and documents program changes with a focus on performance, usability, and reliability across iOS and Android. Works in complex areas of major CSI applications with emphasis on mobile architecture and third-party integrations, including banking core systems. Contributes to modernization of existing technologies and integration layers. Requires strong problem-solving, creativity, and high engineering standards to deliver intuitive, high-performing mobile experiences.

Requirements

• 5+ years of professional software engineering experience, with strong mobile development experience delivering scalable, reliable applications.
• 4–5 years of hands-on React Native and TypeScript experience, including API, backend service, and third-party system integrations.
• Experience with financial systems, banking platforms, core integrations, or regulated technology environments preferred.
• College degree in software engineering, or related field or equivalent industry experience required.
• Strong engineering fundamentals, including clean code, maintainable architecture, performance, testing, reliability, security awareness, and documentation.
• Clear communicator who can collaborate across engineering, product, design, QA, security, architecture, and business teams.
• Ability to manage competing priorities in an Agile environment while balancing delivery, support, technical debt, and quality.

Responsibilities

• Own development and rollout of large mobile projects and cross-platform solutions integrated with backend systems.
• Enforce best practices in React Native, TypeScript, mobile performance, and responsive design.
• Deliver high-quality mobile features efficiently and on time.
• Define mobile architecture, APIs, and integration risks (performance, compatibility, dependencies).
• Promote Agile, CI/CD, and mobile best practices; mentor peers.
• Apply modern mobile technologies and evolving TypeScript ecosystem.
• Strong in React Native and TypeScript; ability to collaborate across backend and integrations.
• Drive mobile UX, architecture, and integration strategy in online banking domain.
• Guide engineers in scalable mobile development.
• Support team effectiveness and cross-functional initiatives.

Benefits

• Competitive salary
• Eligibility for incentive awards based on both individual and business performance
• Comprehensive range of benefits

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Associate degree