Mikkel S

Client : Hana Bank (LINE Bank Project) ● Served as a key contributor on the LINE Bank project, enhancing and maintaining features to achieve a 96% crash-free rate, and delivering significant improvements in application stability. ● Integrated internal company's third-party SDKs, such as VoIP, Biometric, QR System, etc ● Strengthen app using additional securities in keypad protection, device tampering detection, emulator detection, etc as a part to support penetration testing session enablement. ● Provided technical development best standards (git branching system, technical doc, etc), conducted code reviews, and mentoring team regularly to set a standard to junior and mid-level engineers.

I do freelancing (self-employed). Crafting several web apps for a few business units: 󠁯•󠁏󠁏 Banking 󠁯•󠁏󠁏 E-Commerce 󠁯•󠁏󠁏 Education 󠁯•󠁏 Etc

● Led a team of 4 Android engineers, driving high productivity and code quality to achieve a crash-free app rate of 96% or higher. ● Managed CI/CD processes using GitHub Actions to automate apk and aab generation, resulting in a 20% reduction in build time (30 min to 5.8 min) and improved deployment efficiency. ● Architecting, Designing and implementing the project doctor-side telemedicine app from scratch, also integrating it with the Jitsi Video Call SDK and Qiscus Chat to enable real-time communication features. ● Refined core functions and UI elements to meet strict code quality standards. ● Architecting from scratch the new development of "Medivet," a pet-vet app, utilizing React Native.

Client : BCA (Bank Central Asia) ● Contributed to a BCA (Bank Central Asia) project in Indonesia by managing the full spectrum of Android development, including technical implementation, architectural design, coding, and debugging optimization. ● Collaborated with cross-functional teams including designers and QA to develop and launch existing secure, efficient mobile solutions, achieving 78% improvement in user satisfaction and consistently meeting client milestones within deadlines.

● Developed and debugged an Android fintech loan and investment app, ensuring a 95% increase in crash-free usage. ● Created high-end custom view components, such as a loan selector with a roulette wheel interface, animated add-to-cart features, confetti animation build from scratch, etc. ● Collaborated with Expat engineers and the product manager to define technology and product requirements. ● Mentored new developers on coding standards, app architecture, and integration of new technology stacks while implementing additional requirements.

Taking care development from scratch and bug fixing first supplier FMCG warehouse management system (web) and customer POS app (android).

● Resolved Android app bugs and maintained a crash-free rate of 94% or higher. ● Enhanced Android consultation features by integrating WebRTC SDK and Socket.IO to enable seamless patient-doctor video calls. ● Developed and integrated delivery mapping and medicine purchasing features by collaborating with K24 and Goapotik, and added support for payments through multiple insurance providers (Jaga Diri and Great Eastern). ● Refactored the Android codebase from Java MVP to Kotlin MVVM architecture to improve maintainability. ● Mentored junior developers, reviewed code for quality, and delivered reusable UI components aligned with Google Material Design guidelines, resulting in improved team productivity and consistent application design.

Built an internal ERP web application for automotive service dealer parts, directly collaborating with end-users to understand and deliver business process requirements covering car maintenance after-sales management, queue management, appointment scheduling, and payroll systems.

Act as Founding Engineer who established all process of development including developing a web-based e-learning system using native PHP to connect private teachers with school students for educational purposes, such as online appointment booking and learning schedule management.

Crafting and Prompting web-based administrative management system (absent management and payroll system) from scratch.

We trained frontend, backend, and UML business process analysis for everyone who register to CEVEST development center by Minister of Manpower in Bekasi.

Assistant Lecturer of : - Programming (C# and C++) subjects (2015 - 2016) - Microsoft Office (Excel and Access) (2016-2016) for Accounting Major - Microsoft Office (Excel and Access) (2016 - 2017) for Management Major

Mentoring basic to advance English Course for elementary to senior high school

Mentoring Android Java native for all levels in: 1. Kwik Kian Gie School of Business Jakarta (Beginner Level) 2. STT Pelita Bangsa Cikarang (Beginner Level)