Backend Engineer
Building Scalable Systems

4+ years building high-performance backend systems with Go, Rust, and Python. Based in Jakarta, working with teams across US, Australia, and APAC.

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I Love Backends!

A personal journey through backend development - from building reliable APIs to architecting scalable systems. Insights gained from real-world projects and continuous learning.

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About

I build backend systems that scale. From fintech payment processing to e-commerce platforms handling 10k+ products, I focus on reliability, performance, and maintainability.

My journey: Bachelor's in Informatics from Del Institute of Technology (2022), then shipped features at Kredivo Group with Kafka-driven architectures, optimized e-commerce at Catalyst Tech, and strengthened integrations at Tokopedia.

Currently exploring Rust for high-performance systems. Based in Jakarta with US/APAC timezone overlap.

Experience

Backend Engineer

May 2025 - Present

Kredivo Group

  • Event-driven architecture with Apache Kafka on dedicated ECS instances
  • Microservices communication using gRPC and REST APIs
  • Sub-millisecond database query optimization with Redis caching

Backend Engineer

Mar 2022 - Apr 2025

Catalyst Tech (voila.id)

  • 60% API performance improvement via GraphQL optimization
  • Concurrent processing for 10k+ products simultaneously
  • Real-time inventory with Redis pub/sub, ElasticSearch sync

Backend Engineer

Aug 2022 - Nov 2022

Tokopedia

  • Fraud prevention features and encrypted PII data sharing
  • Automated endpoint monitoring for partner integrations

Tech Stack

Go
Expert
Rust
Advanced
Python
Expert
Kotlin
Advanced
REST API
Expert
gRPC
Advanced
GraphQL
Expert
Redis
Expert
Kafka
Expert
PostgreSQL
Expert
MongoDB
Expert
ElasticSearch
Advanced
RabbitMQ
Advanced
NSQ
Advanced

Services

API Development

REST, GraphQL, and gRPC APIs built for scale and performance.

$150–200/hr

Microservices Architecture

Design and implement scalable microservices with Go, Python, or Rust.

$180–250/hr

Event-Driven Systems

Kafka, RabbitMQ, and NSQ implementations for real-time data processing.

$200–250/hr

Database Optimization

PostgreSQL, MongoDB, and Redis optimization for performance.

$150–200/hr

Search & Analytics

ElasticSearch implementation and data pipeline optimization.

$180–220/hr

Code Review & Consulting

Architecture reviews, performance audits, and technical consulting.

$120–180/hr

Monthly Retainer

For ongoing projects, I offer discounted monthly rates starting at $4,000/month for 20 hours/week.

Book Consultation

Contact

Email
apridosimarmata@gmail.com
Phone
+62-822-4938-4331
Location
Jakarta, Indonesia (UTC+7)