About Skills Experience Projects Hire Me
Andy Marthin Christo
Hey! I'm Andy Marthin Christo

Software Engineer focused on backend services, APIs, and macOS applications

I design and deliver scalable backend systems and native macOS applications.

Contact me
Based in Jakarta, Indonesia
Available for freelance and contract
Ruby on Rails • Python • Swift • macOS
GitHub LinkedIn
Software engineer illustration

About Me

I’m a software engineer with a dual passion: crafting robust, scalable back-end systems and building native applications. With a strong background in Ruby on Rails and Python, I excel at creating the logic that powers complex web services.

Separately, as a Swift developer, I have a deep appreciation for the Apple ecosystem and user-centric design, which I bring to my macOS app development. I thrive on solving complex problems, whether on a server or a desktop.

Contact me

Skills & Technologies

Technologies I use across frontend, backend, and infrastructure.

languages
Swift Ruby Python JavaScript TypeScript
Frameworks & Libraries
Ruby on Rails SwiftUI React Redux Node.js Next.js
Databases
PostgreSQL Redis MongoDB
Cloud Platforms
GCP AWS
DevOps & Automation
Ansible Docker NGINX GitHub Actions

Professional Experience

Roles, responsibilities, and impact across teams and products.

Jakarta, Indonesia (Hybrid)

Senior Software Engineer

Jun 2023 - Oct 2023

  • Delivered marketplace backend services for orders, inventory, and user flows
  • Built secure REST APIs with RBAC and token-based authentication
  • Tuned PostgreSQL indexes and caching to reduce query latency
  • Integrated payments and notifications with idempotent retries and webhooks
  • Set up CI/CD pipelines enabling safe rollouts and quick rollbacks
M
MoFe - Motorcycle For Everyone
Remote

Senior Software Engineer

Jun 2021 - May 2023

  • Led backend API development for multi-team product initiatives
  • Designed service boundaries, data models, and migrations for scale
  • Integrated third-party platforms and internal systems with robust error handling
  • Raised reliability via structured logging, metrics, and actionable alerts
  • Mentored engineers and performed thorough code reviews
Q
Questeon
Jakarta, Indonesia

Software Engineer

Oct 2017 - Jun 2021

  • Developed backend services with Ruby on Rails and RESTful APIs
  • Researched and introduced new stack technologies to improve delivery
  • Provisioned, hardened, and monitored servers and cloud resources
  • Reviewed pull requests and enforced coding standards
  • Maintained legacy systems and shipped new features with zero-downtime deploys
O
Owner Digital Agency

Projects

A selection of projects across platforms and stacks.

Philo

Swift SwiftUI

Playful Mac desktop companion and focus tool that blocks distractions.

View Project

PetPalBar

Swift SwiftUI

Cute virtual pet in your Mac menu bar that reacts to your healthy habits and focus sessions.

View Project

MoFE

Ruby on Rails Next.js

Used motorcycle marketplace in Indonesia with end-to-end solutions and upcoming full-stack services.

View Project

Let's Clear Things Up

Common questions answered clearly and concisely.

Profile

Got a question?

Ask me anything below.

1. What is your main tech stack?
2. Are you available for hire?

Ready to Start a Project?

Have an idea? Let's build something amazing together.

Contact Info

I am open to freelance, contract, or full-time opportunities.