Haikal Hilmi
Foto profil Haikal Hilmi

Specialized in Data Engineering

Reliable data pipelines & automated extraction.

I design and operate robust data systems—from complex web scraping to clean warehousing—so your data stays accurate and ready to use.

Web Scraping • Automation • ETL Pipelines • Data Quality

Available for work (Remote/Onsite)
Discuss Your Data Needs
ByteDance logo
DataIns logo
Gadjah Mada Aerospace logo
PetaData logo
PPSMB logo
Robota logo
Semesta Data Digital logo
Telkom Indonesia logo
Tilikan logo
Tokopedia logo
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Data Engineering Work

Production scraping systems and pipelines processing data at scale

Infrastructure I've Operated

High-performance computing clusters for large-scale data processing.

8

HPC Servers

4 main + 4 additional

64

Cores (max)

AMD EPYC 7502P

200GB+

RAM (max)

Ubuntu 22.04 / CentOS

100K+

Records / day

Pipeline throughput

Tesla V100 GPUs

NVIDIA DGX Station

128GB

VRAM (total)

32GB per GPU

2× AMD EPYC 7502P (64-core) · 2× AMD EPYC 7252 (32-core) · 4× 16-core · Ubuntu 22.04 & CentOS · NVIDIA DGX Station: Xeon E5-2698 v4 (20c/40t) · 251GB RAM · 4× Tesla V100 32GB

Engineering Standards

How I keep large-scale data work reliable, clean, and responsible.

  • Respect ToS & robots.txt
  • Rate-limiting + rotating proxies
  • Schema validation & dedup
  • Retry & dead-letter queues
  • PII anonymization
  • Data-freshness monitoring

Data Stack

The tools I use to extract, process, and deliver clean, reliable data.

  • Python
  • Selenium
  • BeautifulSoup
  • Scrapy
  • newspaper4k
  • Airflow
  • RabbitMQ
  • Elasticsearch
  • PostgreSQL
  • Docker
  • Grafana
  • Prometheus
  • Speech-to-Text AI
  • Linux

About

I'm Haikal Hilmi, a freelance data & software engineer. I build large-scale scraping systems and data pipelines, ship full-stack products for clients, and operate HPC infrastructure. Backend Engineer intern at ByteDance (100k+ RPS), 5.0★ on Upwork, and multiple international hackathon wins. I do my best work on long-term engagements where I can own systems end to end.

Experience

Roles where I've owned systems, led teams, and shipped at scale.

  1. ByteDance

    Feb 2025 – Jun 2025

    Built a microservice handling 100,000+ requests/second.

    Backend Engineer · Intern · Yogyakarta, ID

    Contributed to Tokopedia × TikTok-Shop system integrations.

    • Go
    • gRPC
    • RocketMQ
    • NSQ
    • Bytecloud
  2. Semesta Data Digital

    Jan 2024 – Nov 2025

    Designed HPC data pipelines — reliability +25%, processing time −40%.

    Data Engineer · Contract · Jakarta, ID

    Operated an 8-server HPC cluster ingesting social-media & news data at scale.

    • Python
    • Elasticsearch
    • PostgreSQL
    • RabbitMQ
    • Docker
    • Grafana
  3. Tilikan Indonesia

    Sep 2023 – Mar 2024

    Analytics dashboards — reliability +50%, cross-team efficiency +70%.

    Web App Developer · Contract · Yogyakarta, ID

    • Next.js 14
    • React
    • TypeScript
    • MongoDB

How I Work

Straightforward collaboration, built for results.

Engagement

Fixed-price or hourly—whatever fits the project. Open to long-term collaboration.

Communication

Clear, responsive updates throughout the project—no surprises.

Process

Understand the goal, propose the approach, then build and iterate to delivery.

Ownership

I can own a system end-to-end—from tech selection to production.

What clients say

Trusted by teams and organizations to deliver.

As commissioner of Semesta Data Digital and Global Data Inspirasi, I've seen first-hand how Haikal designs data infrastructure, runs large-scale pipelines and scraping with high reliability, and helped shape products like Robota. He was also my teaching assistant for a year—consistent, a fast learner, and highly dependable. He combines genuine technical depth with a strong sense of ownership.
Widyawan, S.T., M.Sc., Ph.D.

Widyawan, S.T., M.Sc., Ph.D.

Commissioner, Semesta Data Digital & Global Data Inspirasi

Yogyakarta, ID

As Director of PT Aksarakan Bhumi Indonesia, I deeply appreciate his work—he not only built the company's website and digital infrastructure, but also drafted our IT security SOPs and actively took part in negotiations with strategic clients, showing a remarkable combination of technical skill, leadership, and business sense.
Alamsyah Pangestu

Alamsyah Pangestu

Director, PT Aksarakan Bhumi Indonesia

Yogyakarta, ID

I had the pleasure of working with Haikal on a scraping project, and he exceeded my expectations in every aspect. Professional, responsive, and highly skilled, delivering high-quality work on time. I highly recommend Haikal—he's a fantastic contractor.
J

Jeesun Kim

Upwork client · Twitter/X Scraper

Aurora, Canada

Haikal is very smart, creative and good at what he does. He is a great communicator and very efficient.
C

Claire Bartolozzi

Upwork client · Tweet Collector

South Yarra, Australia

Haikal was very quick to respond and professional in his work. He even suggested some improvements to the deliverables, which I found useful. I would definitely work with him again.
C

Cristian Buda

Upwork client · PDF→JSON Extraction

Cluj-Napoca, Romania

Also building software?

Beyond data, I ship production-ready full-stack web applications—from UI to API to database.

See my software engineering work