Senior React Native Engineer

🚀 Join Our Data Products and Machine Learning Development Remote Startup! 🚀

At MuttData, we are a dynamic startup committed to crafting innovative systems powered by cutting-edge Big Data and Machine Learning technologies.

We’re currently looking for a Senior React Native Engineer with strong production experience building and maintaining high-quality mobile applications for both iOS and Android.

This role is ideal for someone who has worked in teams of 5+ engineers, taken ownership of architectural decisions, and feels comfortable acting as a senior contributor or tech lead. You will play a key role in shaping mobile architecture, improving performance, and ensuring scalable, maintainable codebases in high-impact environments such as fintech, healthtech, e-commerce, or other high-scale consumer products.

If you’re excited about combining strong mobile engineering practices with data-driven products — and consider yourself a data nerd like us — we’d love to connect. 🐶🚀

🚀 What We Do

• Leveraging our expertise, we build modern Machine Learning systems for demand planning and budget forecasting.
• Developing scalable data infrastructures, we enhance high-level decision-making, tailored to each client.
• Offering comprehensive Data Engineering and custom AI solutions, we optimize cloud-based systems.
• Using Generative AI, we help e-commerce platforms and retailers create higher-quality ads, faster.
• Building deep learning models, we enhance visual recognition and automation for various industries, improving product categorization, quality control, and information retrieval.
• Developing recommendation models, we personalize user experiences in e-commerce, streaming, and digital platforms, driving engagement and conversions.

🌟 Our Partnerships

• Amazon Web Services
• Astronomer
• Databricks

🌟 Our Values

• 📊 We are Data Nerds

• 🤗 We are Open Team Players

• 🚀 We Take Ownership

• 🌟 We Have a Positive Mindset

• 🔍 Curious about what we’re up to? Check out our case studies and dive into our blog post to learn more about our culture and the exciting projects we’re working on! 🚀

Responsibilities 🤓

• Lead the design and implementation of scalable React Native applications (iOS + Android).
• Contribute to architectural decisions, including adoption of the React Native New Architecture (JSI, Fabric, TurboModules).
• Build and maintain native module integrations (Swift, Kotlin, Objective-C)
• Implement robust state management and server-state strategies.
• Ensure high performance and optimized rendering across devices.
• Own release processes for App Store and Google Play.
• Implement and maintain CI/CD pipelines and OTA updates.
• Drive testing strategy (unit, integration, e2e).
• Conduct structured and actionable code reviews.
• Communicate technical trade-offs clearly to cross-functional stakeholders.
• Lead or contribute to major refactors and architectural migrations.

Required Skills 💻

• React Native & Mobile:

• Strong experience with React Native, including the New Architecture (JSI, Fabric, TurboModules).

• Native module integration using Swift, Kotlin, or Objective-C.

• Experience with Expo (managed and bare workflow).

• React Navigation v6+.

• Advanced animations using Reanimated 3, Skia, or Lottie.

• State & Data:

• State management with Redux Toolkit, Zustand, or Jotai.

• Server-state handling using React Query or SWR.

• Implementation of offline-first patterns (MMKV, WatermelonDB, SQLite).

• Experience integrating REST and GraphQL APIs (Apollo or URQL).

• Quality & Tooling:

• Testing experience with Jest, React Native Testing Library, and Detox.

• Performance profiling using Flipper, Xcode Instruments, or Android Profiler.

• CI/CD pipelines using EAS Build, Fastlane, GitHub Actions, or Bitrise.

• OTA updates via EAS Update or CodePush.

• App Store and Google Play release management.Error monitoring tools such as Sentry or Datadog

• Architecture:

• Experience working with modular monorepo patterns (Nx or Turborepo)Feature-based architecture, code splitting strategies, and design systems.       

• Communication:

• Excellent English proficiency (written and spoken) – mandatory

🎁 Perks

• 🌍 Remote-first culture – work from anywhere!
• 🚀 In-Company English Lessons.
• 💪 Wellhub or sports club stipend to stay active
• 🚀 AWS, DBT, Google Cloud, Azure & Databricks certifications fully covered
• 🍕 Food credits via Pedidos Ya – because great work deserves great food.
• 🎂 Birthday off + an extra vacation week (Mutt Week! 🏖️)
• 🤝 Referral bonuses – help us grow the team & get rewarded!
• ✈️**🏝️** Annual Mutters' Trip – an unforgettable getaway with the team!