Architect, design, and implement scalable, performant frontend solutions using React Native, React.js, Next JS and related technologies.
Diagnose and resolve performance bottlenecks (JS thread blocking, memory leaks, rendering optimizations, network performance, bundle size).
Ensure code quality via best practices, automated testing, CI/CD integration, and code reviews.
Collaborate closely with backend, QA, and product teams to deliver seamless mobile and web experiences.
Stay updated with emerging frontend trends, frameworks, and tooling.
Provide technical mentorship to developers, fostering a culture of learning and excellence.
Lead by example with hands-on coding, while setting coding standards and practices.
Collaborate with Product Managers, Designers, and QA to align on delivery timelines and priorities.
Support sprint planning, estimations, and ensure smooth delivery.
Drive initiatives around frontend performance monitoring, observability, and proactive improvements.

7–12 years of experience in frontend development, with at least 4+ years in React Native.
Strong knowledge of JavaScript (ES6+), TypeScript, React.js, Redux / Recoil / Context API.
Proven expertise in performance optimization for React Native apps (cold start, FPS, memory usage, bundle size, network performance).
Solid understanding of mobile CI/CD pipelines (App Center, Bitrise, Fastlane, GitHub/GitLab CI).
Hands-on experience with frontend performance monitoring tools (Flipper, Firebase Performance, Sentry, New Relic, etc.).
Strong debugging skills and ability to work across Android and iOS ecosystems.
Familiarity with native bridges (Java/Kotlin, Objective-C/Swift) for React Native integrations.
Good understanding of frontend security practices and accessibility.
Excellent communication, problem-solving, and collaboration skills.
Fluent in Thai, both written and spoken.
Prior experience leading small teams or mentoring developers.
Nice-to-Have: Experience with micro-frontends, modularization, or mono-repo setups.
Familiarity with performance/load testing tools (JMeter, k6, Locust) for frontend APIs.
Contributions to open-source projects or strong personal GitHub portfolio.

Health Insurance – At Makro PRO, we care about your health! Group insurance from a top insurance company is included in your benefits—OPD, IPD, Emergency OPD
Provident Fund – Makro PRO cares about your long-term plan! We offer 3% provident fund.
Year-end bonus – We include variable and performance bonus for our employees.
Gym Facilities – Our Head office has a fitness center, yoga room, and recreational space. Enjoy Bangkok scenery and work your body!
Attractive Vacations days – Enjoy our attractive annual leave. Let’s say the minimum is 16 days!
No overtime – We work 5 days a week with. We set our own goals and deadlines.
Free car parking space – No more stress or extra cost if you drive to work. We offer free parking space for our employees. Best Culture
Clear focus.
Diverse Workplace (Our members are from around the world!)
Thai and Non-Thai are both welcome!
Non-hierarchical and agile environment
Growth opportunity and career path

Tech Lead, React Native

Key skills