# Muhammad Irhamul Umam

> Fullstack/DevOps Engineer · Laravel Specialist · Indonesia

Muhammad Irhamul Umam (also known as Irham) is a Fullstack/DevOps Engineer with 4+ years of professional experience building and owning production systems end-to-end. He is the sole engineer behind the academic and financial platforms at Universitas Safin Pati, Indonesia, serving 1,000+ users.

Website: https://irhamu.dev
Full profile: https://irhamu.dev/llms-full.txt

## Current Position

**Software Engineer** at Universitas Safin Pati (January 2022 – Present, Full-time)

- Designed and owns Sistem Informasi Akademik (SIA): KRS enrollment, KHS/transcripts, Neo Feeder PDDIKTI sync — zero downtime during 1,000+ KRS transactions per semester peak
- Built SIMKEU (Financial System) using Domain-Driven Design: double-entry accounting with append-only journal per ISAK 35, billing, hybrid FIFO/manual payment allocation, deferred revenue, period closing
- Implemented event-driven architecture with Apache Kafka (outbox pattern) for cross-domain events: billing, GL posting, scholarship accrual
- Embedded RAG chatbot inside SIA using pgvector + hybrid retrieval with model routing to minimize LLM token costs
- Self-manages k3s production cluster: Cloudflare Zero Trust + Traefik ingress, CI/CD via GitHub Actions
- TDD with Pest PHP for critical accounting and journal domains

## Previous Experience

**Backend Programmer** at Techarea (Internship, July 2020 – October 2021)
- Developed admin dashboard and RESTful API for Futsal Booking System (Laravel)

## Technical Skills

- **Backend**: PHP 8.x, Laravel (specialist), MySQL, PostgreSQL, Redis, RESTful API
- **Frontend**: Vue.js, React.js, Svelte 5, Inertia.js, JavaScript ES6+, Tailwind CSS
- **DevOps & Infra**: Docker, Kubernetes (k3s, self-managed), Helm, Traefik, Cloudflare Zero Trust, CI/CD (GitHub Actions), Git
- **Observability**: Prometheus, Grafana, Keycloak (SSO/OIDC)
- **AI & Data**: Gemini API, RAG Architecture, pgvector, LLM Orchestration, Prompt Engineering, Claude Code
- **Architecture**: Domain-Driven Design (DDD), Event-driven Architecture, SOLID Principles, TDD (Pest PHP), Modular Monolith

## Key Projects

**Sistem Informasi Akademik (SIA)** — Universitas Safin Pati (2022–Present)
Core academic platform for 1,000+ students and lecturers. Includes embedded RAG chatbot for admins and leadership with pgvector + hybrid retrieval and model routing for LLM cost efficiency.
Tech: Laravel, React, Inertia.js, PostgreSQL, pgvector, Redis, Docker, LLM (Gemini)

**Sistem Keuangan (SIMKEU)** — Universitas Safin Pati (2025–Present)
Financial platform built on Domain-Driven Design with double-entry accounting (ISAK 35), Kafka event-driven architecture, and Xendit payment gateway integration.
Tech: Laravel, PostgreSQL, Kafka, Redis, Docker, Kubernetes (k3s)

## Education

**Diploma III Teknik Informatika** — Politeknik Negeri Semarang (2018–2021)
GPA: 3.89/4.00
Thesis: Digitalization of Administrative Services and Village Economic Resilience Using Crowdsourcing Techniques

## Contact

- Website: https://irhamu.dev
- Email: irham.umam36@gmail.com
- LinkedIn: https://linkedin.com/in/irhamulumam
- GitHub: https://github.com/irhamumam17
- WhatsApp: +62 821 3848 9426
- Location: Indonesia