P—01XLSmart
XLSMART Web Grosir
Wholesale platform that retail outlets use to buy XL, AXIS, and Smartfren products.
Developed and maintained the backend services for payments and transaction history.
- Java
- Spring Boot
- PostgreSQL
- Microservices
Davin Reyhan Setiawan
Backend Developer
Backend Developer with 3+ years of professional experience designing, developing, and maintaining APIs and microservices with Java and Spring Boot for the telecommunications and banking industries, including payment integrations, system integration, and production support.
Projects
P—02XLSmart
XL Postpaid PayLater E-Wallet Autopay
Automatic payment for XL Postpaid PayLater through e-wallet providers.
Built the backend services and payment-provider integrations, including duplicate-payment protection and asynchronous payment-status handling.
- Java
- Spring Boot
- REST API
P—03Next TI
1QonAPIM
Enterprise API management platform for the Hana Bank core banking system, used to configure APIs and review their request logs.
Developed and enhanced the backend and frontend with cross-functional teams: payment-related and other banking APIs, faster log browsing with pagination and date filters, a SIT-to-production migration workflow with approval steps, and API transformation scripts that migrated services from the legacy API management platform.
- Java
- Spring Boot
- PostgreSQL
- Vue.js 2
- Vuetify
P—04Next TI
TxBroker
Enterprise middleware platform for the OK Bank core banking system.
Maintained and enhanced the platform by implementing new features, resolving issues, and supporting production activities.
Experience
Nov 2024 – PresentContract
Backend Developer
PT XLSmart Telecom Sejahtera Tbk (formerly PT XL Axiata Tbk)
Backend engineer for the XL Postpaid and XLSMART Web Grosir digital products, building Java/Spring Boot microservices with event-driven integration.
- Applied the January 2025 VAT regulation change across XL Postpaid and Prepaid payment services through centralized configuration, and reverted it before release after the government revised the policy.
- Provided BAU and production support for XL Postpaid and payment-related services through log and monitoring analysis, and supported pre-release testing of new XL Postpaid products.
- Collaborated with the tech lead, product owners, business analysts, frontend engineers, QA, and external partners from design through deployment.
Projects in this role:
Jun 2023 – Nov 2024
Java Web Developer
PT Next Transformtech Indonesia (Next TI)
Developed and maintained enterprise API management and middleware platforms for banking clients' core banking systems, with Java/Spring Boot, PostgreSQL, and Vue.js.
- Optimized application performance by identifying system bottlenecks and implementing enhancements that made transaction processing faster.
- Supported production deployments, troubleshooting, and post-go-live activities to keep systems stable and reliable.
- Worked directly with clients on requirements and technical consultation, and maintained technical documentation for future maintenance.
Skills
Education
Degree
Bachelor of Engineering in Telecommunication Engineering
Telkom University · Bandung, Indonesia · 2018 – 2022
Training
Java Backend
JuaraCoding by PT Danamas Insan Kreasi Andalan (DIKA) · Jun 2023 – Aug 2023
Java backend development, database design, application development, and software testing.
UI/UX Research & Design Online Bootcamp
Binar Academy (Kampus Merdeka) · Feb 2022 – Jul 2022
UI/UX research, design thinking, prototyping, and usability testing.
Contact.
Hiring for a backend role? Let's talk.