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I’m Syem Reyes, a Senior Mobile Engineer with 7+ years of experience delivering cross-platform apps, specializing in React Native. I build reliable, scalable mobile experiences and enjoy turning complex requirements into clean, maintainable code. I’ve led teams, integrated native SDKs (camera, biometrics, push notifications), and set up automated testing and CI pipelines. I’m passionate about collaboration, knowledge sharing, and delivering polished products that delight users.…I’m Syem Reyes, a Senior Mobile Engineer with 7+ years of experience delivering cross-platform apps, specializing in React Native. I build reliable, scalable mobile experiences and enjoy turning complex requirements into clean, maintainable code. I’ve led teams, integrated native SDKs (camera, biometrics, push notifications), and set up automated testing and CI pipelines. I’m passionate about collaboration, knowledge sharing, and delivering polished products that delight users.

Syem Reyes

Developer, Web Developer, Programmer, +6

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I’m Syem Reyes, a Senior Mobile Engineer with 7+ years of experience delivering cross-platform apps, specializing in React Native. I build reliable, scalable mobile experiences and enjoy turning complex requirements into clean, maintainable code. I’ve led teams, integrated native SDKs (camera, biometrics, push notifications), and set up automated testing and CI pipelines. I’m passionate about collaboration, knowledge sharing, and delivering polished products that delight users.…I’m Syem Reyes, a Senior Mobile Engineer with 7+ years of experience delivering cross-platform apps, specializing in React Native. I build reliable, scalable mobile experiences and enjoy turning complex requirements into clean, maintainable code. I’ve led teams, integrated native SDKs (camera, biometrics, push notifications), and set up automated testing and CI pipelines. I’m passionate about collaboration, knowledge sharing, and delivering polished products that delight users.

Available to hire

I’m Syem Reyes, a Senior Mobile Engineer with 7+ years of experience delivering cross-platform apps, specializing in React Native. I build reliable, scalable mobile experiences and enjoy turning complex requirements into clean, maintainable code.

I’ve led teams, integrated native SDKs (camera, biometrics, push notifications), and set up automated testing and CI pipelines. I’m passionate about collaboration, knowledge sharing, and delivering polished products that delight users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Mobile Engineer at Buzz Solutions

June 1, 2022 - Present

Designed cross-platform modules using React Native and TypeScript, improving development speed and reducing platform-specific defects. Achieved 95%+ release stability by introducing automated testing and CI pipelines for Android and iOS. Guided 4 mobile engineers across iOS, Android, and React Native through implementation planning, reviews, and knowledge sharing. Integrated native SDKs and bridged platform features (camera, biometric auth, notifications) with custom modules in both iOS and Android. Outlined coding standards and component libraries to unify visual consistency and improve maintainability across teams. Built PowerTrack - a field operations app for technicians to manage energy equipment installation and warehouse inventory, supporting QR code scanning, guided workflows, offline data capture, and secure sync with backend systems.

Mobile Engineer at Mondo

May 1, 2022 - September 24, 2025

Reduced crash rate by 32% through improved error handling, runtime validation, and proactive monitoring. Increased code reuse by 45% between platforms by introducing shared component patterns in React Native and Flutter. Developed feature-rich mobile UIs using React Native and Flutter, targeting both Material and Cupertino design systems. Connected GraphQL endpoints and REST APIs with offline persistence using Realm DB and SQLite for seamless UX. Coordinated with design and product teams to validate feature feasibility and prioritize mobile platform considerations.

Junior Mobile Engineer at Techsys

October 1, 2019 - September 24, 2025

Contributed to native Android and iOS codebases with 200K+ users, maintaining 4.6+ app ratings across stores. Improved startup performance by 28% using lazy loading, async data flows (RxJava, GCD), and thread optimization. Migrated features from native to React Native for shared implementation and improvements speed. Built Flutter POCs to evaluate cross-platform feasibility, gradually scaling features into production builds. Engaged in QA testing, release validation, and bug triaging with distributed product and support teams.

Senior Mobile Engineer at Buzz Solutions

June 1, 2022 - Present

Designed cross-platform modules using React Native and TypeScript, improving development speed and reducing platform-specific defects. Achieved 95%+ release stability by introducing automated testing and CI pipelines for Android and iOS using GitHub Actions. Guided 4 mobile engineers across iOS, Android, and React Native through implementation planning, reviews, and knowledge sharing. Integrated native SDKs and bridged platform features (camera, biometric auth, notifications) with custom modules in both iOS and Android. Outlined coding standards and component libraries to unify visual consistency and improve maintainability across teams.

Mobile Engineer at Mondo

May 31, 2022 - October 10, 2025

Reduced crash rate by 32% through improved error handling, runtime validation, and proactive monitoring. Increased code reuse by 45% across platforms by introducing shared component patterns in React Native and Flutter. Developed feature-rich mobile UIs using React Native and Flutter, targeting both Material and Cupertino designs. Coordinated QA with product and design teams to validate feature feasibility and mobile platform considerations. Connected GraphQL endpoints and REST APIs with offline persistence using Realm DB and SQLite for seamless UX.

Junior Mobile Engineer at TechSys

October 31, 2019 - October 10, 2025

Contributed to native Android and iOS codebases with 200K+ users, maintaining 4.6+ app ratings across stores. Improved startup performance by 28% using lazy loading, asynchronous data flows (RxJava, GCD), and thread optimization. Migrated features from native to React Native for shared implementation and improved iterations speed. Built Flutter POCs to evaluate cross-platform feasibility, gradually scaling features into production builds. Engaged in QA testing, release validation, and bug triaging with distributed product and support teams.

Senior Mobile Engineer at Buzz Solutions

June 1, 2022 - October 28, 2025

Mobile Engineer at Mondo

May 1, 2022 - May 1, 2022

Reduced crash rate by 32% through improved error handling, runtime validation, and proactive monitoring. Increased code reuse by 45% by introducing shared component patterns in React Native and Flutter. Built feature-rich mobile UIs and integrated native SDKs.

Junior Mobile Engineer at Techsys

October 1, 2019 - October 1, 2019

Contributed to native Android and iOS codebases supporting 200K+ users, maintaining 4.6+ app ratings. Improved startup performance by 28% using lazy loading, async data flows (RxJava, GCD), and thread optimization. Migrated features from native to React Native for shared implementation and improved iteration speed. Built Flutter PoCs to evaluate cross-platform feasibility.