Bali & Yogyakarta

Pande Nyoman Pradnya Darsana

< Software Engineer / Backend & Large Data Processing >

Software Engineer with a deep foundation in Java Spring Boot, C# .NET, SQL Server, and PostgreSQL. Over 4 years of battlefield-tested experience in the high-volume retail e-commerce sector and enterprise applications. Passionate about high-throughput system using message brokers (RabbitMQ & Kafka), parallel computing, and transforming legacy monoliths into clean, scalable microservices.

Production Tech Stack

Java Spring Boot C# .NET Core Apache Kafka RabbitMQ PostgreSQL AWS S3 Parallel Computing Docker

Explore Experience

pradnya@engineer: ~

bash

$ curl -s https://pradnyadarsana.com/profile.json

✓ Copied to clipboard! Run in your terminal or browser.

{

"engineer": "Pande Nyoman Pradnya Darsana",

"years_active": 4,

"current_org": "Indomaret Group (KlikIndomaret)",

"core_architecture": [

"Event-Driven (Kafka / RabbitMQ)",

"High-Throughput Data Pipeline",

"Parallel Computing Streams",

"C# to Java Spring Boot Migration"

"status": "PRODUCTION_READY"

}

HTTP 200 OK

JVM / CLR Architecture

4+ Years

Enterprise Experience

Specializing in high-volume retail e-commerce & distributed backend services.

3.8 / 4.0

GPA - S.Kom

Universitas Atma Jaya Yogyakarta, Assistant Lecturer in Computer Networks & Platform-Based Development.

1M+ Datas/Day

Data Processing Pipeline

Developed event driven architecture & paralel data pipelines.

0-Downtime Target

Event-Driven Decoupling

Decoupled mission-critical order & refund flows with message broker.

01 // PROFESSIONAL TRAJECTORY

Work Experiences

Over four years engineering backend systems, event-driven pipelines, and distributed e-commerce architecture.

Software Engineer

ACTIVE

Indomaret Group – IT E-Commerce (KlikIndomaret)

Jan 2022 - Present Yogyakarta

Driving core operational systems supporting one of Indonesia’s largest retail e-commerce chain, focusing on KlikIndomaret CMS, automated Refund System, and enterprise Reporting Systems.

Key Contributions & Engineering Impact:

▸ Enhanced overall system security and mitigated vulnerabilities across the core CMS KlikIndomaret Application.
▸ Implemented message broker architecture using RabbitMQ & Kafka to optimize asynchronous workflows and event-driven decoupling.
▸ Integrated AWS S3 object storage within the Reporting System, boosting performance, retrieval speed, and horizontal scalability.
▸ Architected and completely refactored sales & refund data report data pipelines, significantly improving performance, memory footprint, and code maintainability.
▸ Employed parallel programming techniques and multi-threaded streams to process massive batch datasets with sub-second latency targets.
▸ Spearheaded the migration of the daily reporting system from legacy C# .NET to modern Java Spring Boot microservice architecture.

Stack: Java Spring Boot C# .NET Apache Kafka RabbitMQ AWS S3 PostgreSQL SQL Server Parallel Processing Microservices

.NET Core Developer

Astra Group – Berijalan

May 2024 Yogyakarta

Contracted to develop an enterprise-grade web application for internal team workflow optimization.

Key Contributions & Engineering Impact:

▸ Develop new internal Project Management Tools to streamline multi-team sprint tracking and deliverable management.

Stack: C# ASP.NET Core Bootstrap

Web Developer

Maha Auto Gallery (Rent Car & Motorcycle)

Jan 2023 - Feb 2023 Denpasar, Bali

End-to-end development and production maintenance of a commercial digital presence.

Key Contributions & Engineering Impact:

▸ Designed and developed a modern, conversion-optimized company profile website for a premium automotive rental provider.
▸ Managed complete deployment and provided 1-year continuous SLA post-launch maintenance.

Stack: PHP Wordpress MySQL

Software Engineer Internship

Indomaret Group – IT E-Commerce (KlikIndomaret)

Jan 2021 - Dec 2021 Yogyakarta

Contributed to production enterprise codebases supporting nationwide retail e-commerce operations.

Key Contributions & Engineering Impact:

▸ Delivered production-ready features for CMS KlikIndomaret, Refund System, and Large Data Processing & Reporting System.
▸ Engineered the Business Member management system, dedicated to handling exclusive business accounts within KlikIndomaret.
▸ Developed a automated daily report calculation engine to reconcile and compute nationwide completed sales amounts.

Stack: C# .NET SQL Server TFS

Software Engineer

Drinking Water Manufacturer & Warehouse

Jul 2020 - Oct 2020 Pati, Central Java (Remote Yogyakarta)

Digital transformation of industrial supply chain operations.

Key Contributions & Engineering Impact:

▸ Designed and engineered a custom web application to modernize warehouse supply chain and inventory tracking.
▸ Eliminated manual spreadsheet bottlenecks and minimized inventory discrepancies through real-time stock balance auditing.

Stack: PHP MySQL

02 // PROJECTS & CASE STUDIES

High-Impact Systems & Technical Solutions

Highlights of mission-critical engineering initiatives, legacy modernizations, and scalable distributed architectures.

High-Throughput Refactor Enterprise Architecture

Sales & Refund Data Processing Engine

Client / Org: KlikIndomaret (Indomaret Group)

Complete re-engineering and refactoring of the critical daily reconciliation engine responsible for parsing all nationwide sales orders and refund transactions.

Architecture Impact: Dramatically slashed batch execution time, reduced memory spikes, and enabled parallel computing across large transactional datasets.

C# .NET Parallel Processing SQL Server PostgreSQL

Distributed Systems Message Broker

Event-Driven Order & Refund Messaging Broker

Client / Org: KlikIndomaret (Indomaret Group)

Integrated Apache Kafka to decouple heavy synchronous reporting and refund processes from user-facing transaction paths.

Architecture Impact: Zero blockage on user checkout flow, guaranteed message delivery, and robust dead-letter queue resilience.

Apache Kafka Java Spring Boot Event-Driven

System Modernization Microservices

Legacy Migration: C# .NET to Spring Boot Services

Client / Org: KlikIndomaret (Indomaret Group)

Developing the architectural transition of the legacy reporting subsystem from monolithic C# .NET into clean, modular Java Spring Boot microservices.

Architecture Impact: Enhanced test coverage, system performance, and boosted long-term team velocity and maintainability.

Java Spring Boot C# .NET Microservices SQL Server PostgreSQL AWS S3 Apache Kafka

Enterprise Web App Productivity & Workflows

Warehouse Management System

Client / Org: PT. Anugerah Tirta Alami

Designed and created a new web-based ERP application for supporting and modernizing the operations in a drinking water company's warehouse.

Architecture Impact: It provides end-to-end operational visibility, eliminates manual recording errors, and centralizes data for seamless tracking and business evaluation.

PHP MySQL RESTful API

03 // TECHNICAL STACK & PROFICIENCY

Engineering Skills & Competencies

Categorized breakdown of technical proficiencies from enterprise core backend to distributed infrastructure.

EXPERT TIER

Expertise (Core Strengths)

Technologies and methodologies mastered through extensive production usage and architecture design.