Folded from one square · no scissors, no glue

Sevian Arivyartha

Software Engineer. Rails, Go, Python, and AI Workflows.

About

Sevian Arivyartha. Software engineer with 5 years in Rails, Go, Python, and AI Workflows.

Jakarta, Indonesia, UTC+7.

My background spans C++ CGI on a single EC2 instance through to LLM systems in production, including model evals, AI-as-judge audits, speech-to-text pipelines, and guardrails. I build and operate systems that businesses depend on daily, from design and release through incident response and follow-up fixes.

What I fold with

Backend

Ruby on Rails
Go
Python
FastAPI
Flask
GraphQL
Sidekiq
PostgreSQL
MySQL
Redis

Tooling and Monitoring

Docker
DigitalOcean
CircleCI
RSpec
New Relic
Sentry
AppSignal

Integrations and AI

Stripe
Twilio
HubSpot
Dynamics 365 Business Central (AL)
LLM workflows

Frontend

TypeScript
React
React Native

Languages

Indonesian (native)
English (fluent)

The folds so far

Most recent first

Lucecurrent

Software Engineer I, Sep 2026 to Present

Associate Software Engineer I to III, Sep 2024 to Aug 2026

Jakarta (hybrid)Singapore home-services platform, FT Asia-Pacific high-growth list

Promoted twice in the first year, the first immediately after probation, and again in the second.

AI & Automation: Designed and delivered AI-powered products for customer interactions, agent quality workflows, and lead management.
Financial Systems: Built a virtual wallet and booking system supporting credit top-ups, invoicing, and multi-vertical transactions.
Architecture & Technical Design: Contribute to system architecture, technical design reviews, and implementation decisions across product initiatives.
Production Engineering: Investigate high-impact incidents, identify root causes, and implement fixes and optimizations to improve system reliability, performance, and cost efficiency.

Also on file: design reviews, incident investigations, release planning.

Ukirama

Junior Software Engineer

Mar 2023 to Sep 2024Jakarta · Cloud ERP SaaS for manufacturing, logistics and F&B retail

Built the approval-workflow engine from scratch, giving customers configurable multi-step approvals across ERP processes.
Halved ERP report generation time by extracting a core library from the Rails monolith into a standalone Go service.

Orami (SIRCLO)

Junior System Operation (L2 Support Engineer)

Nov 2021 to Jan 2023Tangerang · E-commerce platform for mother and baby products

Resolved PostgreSQL and MySQL incidents in high-traffic e-commerce workflows; runbooks built from recurring failure patterns cut resolution time ~90%.

Larona Prima Solusi

Web Developer and IT Technical Support

Aug 2019 to Jan 2021Tangerang · ERP software for Indonesian SMBs

Sole backend engineer on a C++ CGI stack behind Apache on EC2. Led an offline-first web ERP client (IndexedDB, sync to the central system) so customers could keep working on unreliable connections.

Bunda Mulia University

Bachelor of Computer Science (S.Kom.), Information Systems (Sistem Informasi)

Aug 2018 to Oct 2022Tangerang · education

MySkill

Product Management: Fullstack Intensive Bootcamp

Mar 2023certification

Open source

redacted (Rust)

Claude Code PostToolUse hook that scans tool output at ingest and replaces secrets with placeholders, keeping API keys out of the model's context window and reducing accidental or prompt-injection-driven exfiltration.

redacted.my.id

event_timeline (Ruby gem)

A Rails engine that traces method calls, parameters, and return values during each request so you can replay failures and see exactly what happened beyond a stack trace.

github.com/svn-arv/event_timeline

Say hello

In case of interesting problems, notify

hi@sevian.my.id

github.com/svn-arv (opens in a new tab)
linkedin.com/in/sevian-arivyartha (opens in a new tab)

These are summary entries. Happy to answer questions on LinkedIn (opens in a new tab).

One (1) rubber duck, standard issue, folded from one square. Most bugs confess before the duck says a word.