👋 Hi there, I'm
Ahmad Wijaya
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A Software Engineer with solid skills across front end, back end, and cloud technologies. Passionate about building scalable systems and embracing cutting-edge technologies to solve complex challenges.
Tech Stack
About Me
Hi, I'm Ahmad! 👨💻
Currently working as a Java Developer Specialist @ PAYOK in Dubai, United Arab Emirates. With over 5 years of experience in software development industry, I've worked across various domains including:
Digital Services
Telecommunications
Finance
Payment Gateway
Core Competencies
5+
Years of Experience
50+
Projects Completed
3
Countries Worked
Experience
Java Developer Specialist
PAYOK Sep 2024 - Present Dubai, United Arab Emirates 🇦🇪- Performing payment integration with banks or channels from various countries starting by writing channel analysis, coordinating with channel, writing coding, UAT testing, and go-live
- Architected secure and highly available Three-Tier AWS infrastructure using Terraform, implementing separate VPCs, auto-scaling, and environment isolation patterns for P2P Project's development and production environments
- Optimized P2P Backend Service by implementing distributed scheduling with ElasticJob, creating Payin/Payout reporting systems, and resolving cross-origin issues
- Built an internal library to transfer USDT balances from wallet to wallet on top of the Tron Network
- Support merchants if they experience difficulties in integrating the API made by the company
Technology Specialist
TIMWETECH Jun 2023 - Sep 2024 Lisbon, Portugal 🇵🇹- Architect new projects and solutions based on CR (Change Request) from Indonesia clients such as Indosat and XL Axiata
- Added new features on Digital Services Project such as Indosat PRM (Portal Relationship Management), MEP (Mobile Engagement Platform), Services Management of Indosat, Portal Admin of XL Axiata, etc
- Support TIMWETECH clients such as Indosat and XL Axiata during SIT & UAT testing
Backend Engineer
Alto Network Sep 2022 - Jun 2023 Jakarta, Indonesia 🇮🇩- Spearheaded BCA Flazz payment integration project, architecting complete system design (ERD, Service Architecture) and developing core transaction, consumer, scheduler, and settlement microservices
- Spearheaded Tiket.com reservation platform, architecting system design (ERD, Service Architecture) and developing core, consumer, and booking microservices
- Enhanced and optimized Biller Projects for Dana and ShopeePay services, implementing new features and resolving critical system issues
API & Microservices Developer
XL Axiata Apr 2020 - Sep 2022 Jakarta, Indonesia 🇮🇩- Built APIs for Channel Business (Traditional and Modern Channel) such as SiDOMPUL, XL Grosir, RO Server, Master Aggregator, etc
- Part of the Channel Team that successfully delivered the Master Aggregator project that simplified the modern channel business and increased profits for the company
- Being part of the Pecel Lele Scrum Team that has successfully improved the retail store experience, fixed operational issues, enhancement platform, migrated systems and new initiatives
Get in Touch
Let's Connect!
I'm always open to discussing new projects, opportunities in software development, or tech in general.