Crypto Wallet Backup/Restore: implemented single and multiple backup onto Cloud via Email/SMS OTP verification. Multiple components included in consideration, e.g. Apple & Google account state, backup file integrity and rotation, availability of backup storage options, backup storage distinct handling between iOS & Android, restore timelocking. All of these tasks were completed while preserving the integrity of the existing backup mechanism and mitigating potential security risks. This addresses the most common concern raised by users. Secure payment: implemented embedded browser for secure payment processing. Conducted security risk analysis and addressed native code bugs. Crypto News: doing research, designing system architecture in the form of Technical Design Document (TDD), code both UI and server, server deployment. Tight collaboration was required with all stakeholder: Product Manager, Project Manager, Engineering Manager, Security Risk Analyst, and senior Software Engineer. Optimizing Crypto News server: 30 CPUs & 38 GB RAM down to 1 CPU & less than 1 GB RAM. App optimization: omit unnecessary component re-renders and lifted heavy computation from UI, bringing back app refresh rate to 60 fps. Multiple language support: ensure all text on all flows are translated. Touched thousands of files while keeping the existing flow unchanged. Crypto transaction refactor: refactored error handling for crypto transactions to enhance reusability and prevent unexpected issues.

Lead Frontend Engineer: led the frontend development of 10 CRM applications and made significant contributions to an additional 20. Responsibilities include reporting directly to the project manager, supervising a team of 7 engineers, leading sprint ceremonies, consistently monitoring the progress of each engineer, and managing app deployment. Maps optimization: transformed sluggish maps into fluid, high-performance displays for neighborhood areas, listings, and agents, capable of handling up to 100,000 shapes/points simultaneously on Next.js. VP-Level collaboration: directly reported to the Vice President (VP) of Engineering, led a comprehensive CRM platform transformation to transition from single-account to team accounts. Spearheading the MVP for integrating big data analytics tools with all frontend applications. Microservice architect: collaborated with a Senior System Architect to design a microservice responsible for collecting and forwarding all user activities across the CRM platform. This service seamlessly integrates with the Google Cloud Platform (GCP). Dynamic-content email: pioneered the creation of a responsive and pixel-perfect email template, seamlessly rendering bar charts across diverse operating systems and devices. Achieved the company's first-ever widespread success in email design (HTML and CSS). Emails were sent to 200,000 agents. Streamlining development time: meticulously documented research trials and errors in dev logs while perfecting the email template. These logs proved invaluable to fellow frontend engineers, saving them precious time in their email-related work. UI perfectionist: conducted meticulous code reviews on frontend code to ensure pixel-perfect UI, adherence to best practices, and the implementation of safety measures in every workflow. Bugs terminator: swiftly responded to critical bugs, providing regular updates on progress towards fixes, ensuring smooth operations for end-users. Team player in challenging times: demonstrated resilience during a challenging period of consecutive firings due to the impact of COVID, showcasing commitment and dedication to my role and team.

Solo App Architect: developed the Muslimnesia app from scratch to a production-ready state with 50,000+ downloads using React Native. Optimization Expert: optimized app load times on Android and iOS from 5 seconds to 0.5 second. Creative Problem Solver: conducted in-depth research to overcome challenges, including drawing custom shadows, maintaining responsive layouts across various screen sizes, and implementing user-defined alarms. These tasks involved extensive customization on the native sides of React Native due to its inherent limitations. Design Alignment Pro: ensured a pixel-perfect UI and UX in collaboration with designers. Bugs Beater: skillfully resolved bugs across all versions of the app, catering to both Android and iOS platforms, maintaining a smooth and error-free user experience.

Platform for Doctors: solo-built platform for Prostate Cancer Specialist doctors in Indonesia to efficiently manage and secure medical records. Platform for Gas Company: solo-built platform offering comprehensive support for daily business operations, spanning from sales to production. Platform for Government: solo-built platform to support day-to-day work activities conducted by asset surveyors.