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Aditya Junianto

@adityajunianto

Backend Developer at PT Qoin Digital Indonesia who built a configurable reconciliation engine processing CSV files with 300K+ rows.

Indonesia

Message

At PT Qoin Digital Indonesia, I designed and built a financial reconciliation engine from scratch as the sole engineer, without senior guidance. It supports user-defined column mapping, custom arithmetic expressions, and CSV files with 300K+ rows.

I also owned delivery across seven core services and built RabbitMQ event-driven pipelines for payment and notification flows. In freelance projects, I built a multi-source price comparison engine and systems for turbine monitoring and real-time mask detection.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

PT Qoin Digital Indonesia

Oct 2022 - Present (4 years)

Designed and built a dynamic financial reconciliation engine from scratch, supporting user-defined column mapping and custom arithmetic. Owned 70-85% of core service delivery across 7 services and built event-driven pipelines using RabbitMQ.

Go Microservices Event Driven Architecture RabbitMQ REST APIs PostgreSQL HashiCorp Vault Keycloak Jenkins Rancher Docker

Current

Backend Developer

Current

Freelance

Jan 2021 - Present (5 years 9 months)

Built a multi-source price comparison engine, a turbine monitoring system, and a real-time mask detection collector. Developed company profile CMS and payment-integrated microservices.

NodeJS Express MySQL Go Redis PostgreSQL Firebase Cloud Messaging Pusher Laravel Bootstrap Xendit

Backend Developer

PT Datamax Teknologi Internasional

Oct 2021 - Feb 2023 (1 year 4 months)

Started as junior backend engineer and was appointed as PIC across auth, product, backoffice, and lending services after senior engineers resigned. Led integration of Gopay payment gateway and contributed to microservice architecture.

Go NodeJS Redis Elasticsearch PostgreSQL gRPC Microservices Alibaba Cloud