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rifqisyandi

Hi, I'm Rifqi 👋

Rifqisyandi Khairurrizal

Full-stack developer moving into ML / AI engineering. Computer Science @ Universitas Indonesia (Fasilkom UI), class of 2023.

  • Jakarta, Indonesia
  • Currently: speech recognition for stuttered speech

01 / about

About

I'm a Computer Science student at Universitas Indonesia who likes building real products end to end — backend, frontend, and lately machine learning.

I was Scrum Master for a 9-person team shipping an invoice risk-scoring SaaS, won 1st place at CodeFest ICP Hackathon 3.0, and I'm now working on speech recognition for people who stutter.

The areas I want to go deeper in are ML engineering, backend systems, and post-quantum cryptography.

Studying
B.Sc. Computer Science, Fasilkom UI
Class of
2023 · expected graduation July 2027
Interests
ML engineering, backend systems, post-quantum cryptography

02 / skills

Skills

Languages

  • Python
  • Java
  • TypeScript
  • JavaScript
  • Rust
  • SQL
  • C++

Frameworks

  • FastAPI
  • Django
  • Spring Boot
  • React
  • Celery
  • Azle

Machine learning

  • PyTorch
  • Whisper
  • scikit-learn

Tools & cloud

  • Git
  • Docker
  • PostgreSQL
  • AWS EC2
  • Linux
  • Vercel
  • Linear

03 / experience

Experience

  1. –

    Teaching Assistant — Introduction to Computer Organization

    Fakultas Ilmu Komputer, Universitas Indonesia

    • Assisted students in the course through lab sessions, grading, and Q&A.

04 / projects

Projects

2026 · Featured

Smart Invoice Reminder AI (SIRA)

SaaS accounts-receivable platform that automatically reminds customers to pay their invoices. Team of 9 — I was Scrum Master and a full-stack developer.

  • Built a deterministic, weighted credit-risk scoring engine that rates each customer LOW / MEDIUM / HIGH, so businesses know who to follow up first.
  • Profiled a Celery background task with pyinstrument and removed an N+1 query bottleneck, then refactored it with Extract Class and dependency injection.
  • Python
  • FastAPI
  • React
  • Celery
  • PostgreSQL

Performance

121 ms to 4 ms

~97% faster · Celery task after removing an N+1 query

  • 2024

    SubmiD

    1st place · CodeFest ICP Hackathon 3.0

    Decentralized form builder and response-collection platform on the Internet Computer, built by a team of 4 in about two weeks. I owned testing and deployment for the final demo.

    • TypeScript
    • Azle
    • React
    • Internet Computer

  • Ongoing

    Speech Recognition for Stuttered Speech

    In progress

    Disfluency-aware ASR for Indonesian speech: reproducing an existing research pipeline and adapting it so Whisper handles stuttered speech better, and exploring a live streaming version.

    • Python
    • OpenAI Whisper

  • Solo

    SCeLE Deadline Bot

    Monitors SCeLE, UI's Moodle-based learning platform, and sends Discord alerts when deadlines or course content change.

    • TypeScript
    • Node.js
    • GitHub Actions
    • Vercel
See all projects

05 / awards

Awards

  • May 2024

    Champion · CodeFest ICP Hackathon 3.0

    With SubmiD, a decentralized form builder on the Internet Computer.

06 / writing

Writing

I write about the engineering behind my projects: profiling, refactoring, testing, and team workflow.

  1. Git, Linear, Discord: The Automation Layer That Replaced Manual Status Updates (opens in a new tab)
  2. Static Analysis Isn't Optional: How We Built a Three-Tier Quality Gate for SIRA (opens in a new tab)
  3. TDD Isn't Enough: How Benchmarks Turned Green Tests Into Real Evidence (opens in a new tab)
All posts on rifqi-blog (opens in a new tab)

07 / contact

Contact

Email is the best way to reach me. I'm also on GitHub and LinkedIn.

rifqisyandik@gmail.com