Zainal ArifinFull-stack developer · Surakarta, Indonesia
Backend, web, mobile, and the servers underneath. Since 2016 I’ve worked at a foundation running an orphanage and boarding school, where I now run the information system its staff use every day.
Selected work
One flagship case study running in production, plus mobile, IoT, and research projects I’ve built.
Case study · In production
Finances, donations, reports, and the children’s education records were kept by hand, and monthly reports often disagreed. I replaced it with one system: a Go API, a React web admin, a Flutter app, and MySQL, running on a VPS with Docker and shipped through GitHub Actions.
An open point-of-sale app for small businesses: products and stock, a cashier screen with barcode scanning, 58 mm receipts, daily and monthly reports, and a REST API.
AIoT research: incubator temperature control using PID assisted by a 1D-CNN model.
Turns a manual washing machine into an IoT-controlled one, operated from a phone app.
Household-level organic waste records for Gentan village (Sukoharjo) to map an integrated waste management plan. Each household is tagged with a QR code.
Bangkit capstone (team C242-PR599): scan a food product to see its nutrition content. I worked on the Android app.
I joined this foundation in administration. Knowing exactly where the manual process went wrong, I built the system that fixes it, and I run it from the code to the servers.
Experience
Jan 2024 – present
Yayasan Majlis Ta'lim Nurul Huda
Full-time. Building and running the SIM Wisma Asuhan system: backend, web, mobile, and servers.
Dec 2016 – present
Yayasan Majlis Ta'lim Nurul Huda
Part-time. Foundation administration, which is how I came to know the processes I later digitized.
Jul 2022 – Aug 2026
Institut Teknologi Bisnis AAS Indonesia
Graduated August 2026.
earlier
Pondok Pesantren Al-Islam Surakarta
Credentials
Indonesia’s national BNSP certification plus intensive training programs from Google, Indosat, DBS Foundation, and IBM.
BNSP · LSP Teknologi Digital2026
Indonesian national certification (Pengembang Web Pratama). Six competency units, from UI implementation to working with libraries. Valid until 2029.
62090 2513 3 0170323 2026
Indosat Ooredoo Hutchison · Dicoding2026
MLOps Engineer learning path, about 90 hours.
IDCAMP2025/L3-ML-048
IBM SkillsBuild · Hacktiv82026
IBM SkillsBuild University Education program, including a final project.
00180/H8/CSR/ISUE/V/2026
Bangkit Academy (Google) · Kampus Merdeka2024
Full graduate, 912 hours including the NutriGo capstone. Part of the MSIB Independent Study program, batch 7.
DBS Foundation · Dicoding2023
DevOps learning path: Linux, networking, CI/CD, and microservices.
DBSFCC2023/L2-DO-098
Contact
I’m open to full-time and freelance work. Email is the fastest way to reach me.