MUHAMMAD RAFI AFRIZA

Software

01 — ABOUT

I am a Full-Stack Systems Engineer and Information Systems student with experience building scalable web applications and optimizing infrastructure using Node.js, Supabase, Laravel, and PostgreSQL. Currently working at PT Data Teknologi Terintegrasi ( Data Polis )

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02 — EXPERIENCE

Journey & Milestones

Software Engineer

PT Data Teknologi TerintegrasiWORK

Architected an AI-powered actuarial assistant (PSAK 219) as an LLM function-calling agent grounded on a Retrieval-Augmented knowledge base, hardened with enterprise data-privacy guardrails — per-employee PII masking, deterministic prompt-injection defenses, and audit logging — to deliver hallucination-free, source-based answers on regulated financial data, built on PHP Laravel.

Engineered the Node.js actuarial calculation engine at the core of the valuation platform, implementing PSAK 219 computations end-to-end (PVDBO, current/past service cost, employee-mutation impact, and weighted-average liability duration) with the numerical precision required for audited financial statements.

Developed the valuation platform backend serving multi-period valuation results and employee-level actuarial data through secured, shared-secret service-to-service APIs — the single source of truth consumed by both the AI assistant and the CRM. Delivered the end-to-end CRM with a React frontend and JWT-secured Laravel REST API (project management, Kanban, and real-time chat), backed by PostgreSQL/MySQL and covered by a comprehensive automated test suite.

Mar 2026Sekarang

Fullstack Developer Intern

PT Gemala Kempa Daya ( Astra Otoparts Group )WORK

Responsible for any develop and improvement for low-to-mid level projects.

Arranged User Meeting in order to discuss user needs and requirements.

Designed the new system based on user needs and requirements, in-field conditions, current business process, and documents used during the process.

Developed manufacture system modules using PHP Laravel framework and defined its databases with Oracle and PostgreSQL DBMS

Feb 2025Apr 2026

Vice President – Information Systems Student Association

Himasis Politeknik STMI JakartaORGANIZATION

Representing the chairman of the association if the chairman cannot be present

Assist the association chairman in coordinating divisions

Supervise, analyze, and assess the performance of the board and the internal work program of the association

20242025

03 — SELECTED WORKS

Portfolio & Projects

04 — SOFT AND HARD SKILLS

Technical Proficiency

INITIALIZING SYSTEMS...

05 — OPEN SOURCE

GitHub Repositories