DhimasHire Me
Pekanbaru, Indonesia · Backend & AI Engineer
GMT+7

Building Reliable Systems
& Intelligent Apps

I'm Muhammad Dhimas Hadid Fachrezy — a software engineer and AI enthusiast from Pekanbaru. I turn complex problems into dependable software, from REST APIs to Hybrid RAG architectures.

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3+Years Learning
0+Active Users
3.74GPA Score
SINTA 4First-Author Publication
Muhammad Dhimas Hadid Fachrezy
Node.jsExpressFastAPIPythonJavaScriptTypeScriptPostgreSQLMySQLDockerGitGitHubPostman
Selected Projects

Things I've Built

A selection of products and systems I've designed, developed, and brought to life.

About Me

A Software Engineer
with an AI Mindset

> dhimas@portfolio ~ whoami

Informatics Engineering graduate from UIN Sultan Syarif Kasim Riau (GPA 3.74). I build reliable backend systems with Node.js, FastAPI, and PostgreSQL, and work on Hybrid RAG for AI-powered applications.

My research, published in a SINTA 4 journal, explores a dual-path retrieval system for a mental health chatbot. The system is now used by more than 120 medical professionals.

UIN Sultan Syarif Kasim Riau — BSc in Informatics Engineering
Pekanbaru, Riau, Indonesia
Open to backend and AI engineering roles

> dhimas@portfolio ~ ls certifications

Certifications & Training
JavaScript Essentials 1Cisco Networking Academy
Sep 2026
Software EngineerHackerRank
Aug 2026
Database Programming with PL/SQLOracle Academy
Jan 2024
Backend Development FundamentalMySkill
Sep 2024
Data Analysis & VisualizationMySkill × Deloitte
Aug 2024
Tech Stack

Tools I Build With

From backend APIs to intelligent retrieval systems, these are some of the tools I use to solve real problems.

01 / STACK

Backend Engineering

6 tools
Node.jsExpressFastAPIRESTful APIJWTAPI Integration
02 / STACK

Programming Languages

4 tools
PythonJavaScriptTypeScriptSQL
03 / STACK

Database & SQL

5 tools
PostgreSQLMySQLQdrantDatabase DesignPL/SQL
04 / STACK

AI & Retrieval

6 tools
Hybrid RAGLLM APIVector DatabaseBM25EmbeddingsRAGAS
05 / STACK

System Analysis

5 tools
SDLCUML DiagramsERDDatabase NormalizationCOBIT 4.1
06 / STACK

Tools & DevOps

6 tools
GitGitHubDockerVPSPostmanLooker Studio
Experience

Engineering in Practice

A short log of the teams, systems, and work that have shaped my engineering journey.

01Oct 2026 — PresentInternship

CHANGELOG / 01

Software Developer

PT Genesis Digital Indonesia

Current

HIGHLIGHTS

  • 01Technical training program focused on Web Development fundamentals
  • 02Studying HTML semantic elements, CSS Flexbox/Grid, Responsive Design
  • 03Learning JavaScript: DOM manipulation, event handling, problem-solving
02Sep 2025 — Jan 2026Project

CHANGELOG / 02

Software Engineer

Technopreneurship Lab & IT Business Incubator, UIN Suska Riau

Completed

HIGHLIGHTS

  • 01Built a mental health screening chatbot using 66 questions from 5 clinical instruments
  • 02Took the system from requirements and design through implementation and testing, then deployed it to a VPS
  • 03Used by more than 120 medical staff at RS Dr. M. Djamil Padang
03Sep 2024 — Jan 2025Project

CHANGELOG / 03

Backend Developer

Warung UMKM Riau

Completed

HIGHLIGHTS

  • 01Replaced manual rental and sales tracking with a system built using Node.js, Express, and TypeScript
  • 02Set up role-based access for directors, division heads, and customers
  • 03Added Leaflet maps to monitor booth locations in real time
Research

First-Author
SINTA 4 Publication

I built a Hybrid RAG system for a mental health chatbot, combining structured screening data in PostgreSQL with semantic search through Qdrant and BM25.

Published in JUPTIK, Vol. 4 No. 1, 2026.

Read Paper
0.7039LaBSE F1 Score
0.9234E5 Cosine Similarity
0.9350RAGAS Faithfulness
100%Query Router Accuracy
Contact

Let's Build Something Useful

I’m open to opportunities in backend, software, and AI engineering. If you have a project in mind, feel free to get in touch.

muhammaddhimas1410@gmail.com