Hi, I'm Khesa
I build systems that  ship. scale. last. endure. I build systems that ship, scale, last, and endure.

I build software that solves real-world problems. Over the past 6+ years, I've worked across mobile, web, backend, and cloud technologies, helping transform ideas into products used by businesses and everyday users

1. Apr 2025 – Apr 2026 Now

   Backend Developer & Technical Tester

   Maybank Indonesia

   • Designed Jenkins CI/CD pipelines, replacing manual deployment for faster, more reliable releases.
   • Migrated containerization from Docker to Podman for rootless, hardened operation.
   • Upgraded deprecated dependencies and Java runtimes across microservices to improve security posture.

   Spring BootSpring CloudSpring BatchRabbitMQJenkinsPodmanLinux
2. Jan 2025 – Mar 2025

   Android Developer

   Hitachi Channel Solution

   • Added full offline mode (Room/SQLite) to a legacy POS: receipts, transactions, catalog, customers.
   • Built local↔remote sync with WorkManager and connection-aware observers for seamless online/offline.
   • Modeled relational Room schemas (1:1, 1:N, N:N) to eliminate redundancy.

   AndroidKotlinClean ArchitectureRoomRetrofitGradle
3. Oct 2024 – Dec 2024

   Fullstack Developer

   Toyota Motor Manufacturing Indonesia

   • Built web views and reusable UI across multiple internal systems; designed the REST APIs behind them.
   • Implemented queue-based import/export to remove long blocking waits on bulk operations.
   • Built monthly schedulers powering recurring automated downstream tasks.

   VueVuexNode.jsExpressPostgreSQLSwagger
4. May 2024 – Oct 2024

   Backend Developer

   CSUL Finance

   • Architected a maintainable factoring platform from scratch with a unit-testing strategy and API docs.
   • Implemented JWT auth, rate limiting, and third-party integrations to harden the platform.
   • Tuned queries to cut API response times; managed multi-stage VPS environments.

   JavaSpring BootMavenPostgreSQLReactLinux
5. Jan 2024 – May 2024

   Telematics Flutter Trainer

   Toyota Motor Manufacturing Indonesia

   • Designed and delivered a production-grade Flutter curriculum for a cohort of 15.
   • Led building a Telematics app: Bluetooth + internet vehicle remote control, maintenance, GPS tracking.
   • Introduced Raspberry Pi + Flutter head-unit kiosks (flutter_pi, snap_installer) and systemd IoT services.

   FlutterPythonRaspberry PiLinuxNode.jsExpress
6. Oct 2022 – Nov 2023

   Mobile Engineer

   Aldmic (Floweradvisor)

   • Built the Florist Partner hybrid app from scratch off Figma, focused on maintainability and testability.
   • Owned end-to-end Play Store / App Store releases: keystores, submissions, review feedback.
   • Shipped multi-language support and responsive layouts across a wide device range.

   FlutterBLoCProviderFirebaseGoogle MapsSentry
7. Sep 2021 – Oct 2023

   Software Engineer

   Otomotives Platform Mobilitas

   • Built BengkelPro (10k+ downloads) and Otomotives (1k+) Android apps from scratch; onboarded 20+ workshops.
   • Designed system architecture and DB schemas with the CEO; built REST APIs across interconnected apps.
   • Stood up and ran VPS infra from scratch (DBs, Git, Nginx/Apache) and Excel import/export reporting.

   AndroidKotlinFlutterLaravelVueSpring BootLinux
8. Aug 2020 – Sep 2021

   Mobile & Web Developer

   Digital Mind System

   • Delivered mobile and web apps for banking clients (Bank DKI, Bank CIMB Niaga).
   • Built offline-capable Android features (Room) for uninterrupted field operations.
   • Added real-time chat and push via SignalR; managed SQL Server stored procedures and schema design.

   C#.NETSQL ServerAndroidSignalRjQuery