Senior React Native Developer Colombia

Who We Are

At MAS Global Consulting, we are a premium digital engineering partner trusted by innovative startups and Fortune 100 companies, delivering high-impact solutions through agile delivery, deep technical expertise, and a strong people-first culture across the Americas.

We build long-term partnerships, not just software. MAS means “more” in Spanish, and that mindset drives our commitment to greater opportunity, inclusion, and impact.

Founded by a Latina engineer from Medellín and headquartered in Tampa, Florida, MAS Global Consulting is a 100% Hispanic and woman-owned company, recognized as a Great Place to Work and one of the Fastest-Growing Companies in the US.

Who You Are

You’re a Senior Mobile Software Developer with strong experience building mobile applications using React Native. You care deeply about user experience, performance, and accessibility, and you’re comfortable owning critical user-facing flows end to end.

You enjoy collaborating closely with Product and Design, making pragmatic technical decisions, and contributing to frontend architecture while maintaining a high bar for quality and maintainability.

What You’ll Do

Design and develop user-facing mobile experiences using React Native, with a strong focus on performance, accessibility, and polish.

Own and evolve core onboarding and acquisition flows, from initial entry points through account creation and activation.

Partner closely with Product, Design, and Data to translate requirements and UX designs into high-quality frontend implementations.

Collaborate with backend engineers to integrate APIs, manage client-side state, and handle data fetching and error states.

Drive cross-platform consistency across iOS and Android, and collaborate with Web teams when needed.

Lead frontend architecture decisions, including component design, state management, navigation, and testing strategies.

Mentor and support other engineers growing their frontend or React Native skill sets.

Promote a written-first engineering culture through documentation, design docs, tech specs, and post-mortems.

Continuously improve frontend quality through performance optimization, code reviews, and refactoring.

Stay current with the React, React Native, and frontend ecosystem, bringing best practices back to the team.

What You Bring

5+ years of software engineering experience, with a strong focus on frontend or mobile UI development.

Significant experience building production applications with React Native.

Strong proficiency in JavaScript/TypeScript, React, and modern frontend patterns.

Solid experience with frontend architecture concerns, including state management, component systems, navigation, and data fetching.

Deep understanding of mobile UX, accessibility, and performance considerations.

Experience with frontend/mobile testing frameworks (e.g., Jest, React Native Testing Library, Detox, or similar).

Experience integrating frontend applications with backend APIs and handling asynchronous data flows.

Strong emphasis on writing maintainable, well-tested, and scalable frontend code.

Experience with CI/CD pipelines for frontend or mobile applications.

A pragmatic, user-focused approach to delivering features safely and incrementally.

Strong collaboration skills and the ability to translate product and design requirements into robust technical solutions.

English proficiency at B2+ level or higher.

Nice to Have

Experience with native mobile development (Android or iOS).

Experience building or contributing to design systems or shared component libraries.

Web frontend experience using React, Next.js, or similar frameworks.

Experience with A/B testing, experimentation, or analytics instrumentation.

Familiarity with monitoring and error tracking tools (e.g., Sentry, Datadog, Kibana).

Some backend experience (e.g., Kotlin or Python) to support end-to-end collaboration.