Side Projects
Mustafa Erbay Projects
System architecture is my day job — on the side, I ship products. Most are built from scratch to solve a real, everyday problem in Turkey, run solo and self-hosted.
BurnCPU
The social network I built from scratch, self-hosted
A self-hosted social network I built from scratch. Rust + Axum backend, SolidJS frontend; powered by PostgreSQL, Redis and Meilisearch. AI-assisted moderation and a federation-ready architecture. The project behind my "first 100 users" career story.
- High-performance backend with Rust + Axum
- AI-assisted content moderation
- Instant search via Meilisearch
- Federation-ready, open architecture
Tech stack
- Rust
- Axum
- SolidJS
- PostgreSQL
- Redis
- Meilisearch
Other projects
Hesapciyiz
34 calculators for Turkey — instant, in-browser
34 calculators tailored for Turkey: salary, VAT, severance, BMI and more. Up-to-date 2026 parameters, runs instantly in the browser, no sign-up.
- Salary net-gross conversion
- VAT, income tax, vehicle tax
- Loan & interest calculator
Spam Kalkanı
0850 & scam blocker — fully on-device
Android spam-call blocker tailored for Turkey. Auto-filters 0850 and known scam numbers. Privacy-first: calls are processed entirely on-device.
- 0850 & scam auto-block
- On-device processing (no server)
- Quiet hours & family mode
İş Listesi
Turkish task manager — web & mobile, free
Turkish-first task management app. Web + iOS + Android, free and no sign-up. Microsoft To Do's practicality with Things 3's clean design. Privacy-first: no location, microphone or contacts access.
- Multi-device sync + offline mode
- Recurring tasks & reminders
- #tags + color-coded priority
GerçekVeri
Anonymous Turkey data — by city & role
An anonymous data platform that collects real-life Turkey numbers (salary, rent, bills, fees) and compares them by city and position. No personal info asked, contribute in 30 seconds.
- 100% anonymous contribution
- Median + P25-P75 by city/role
- Salary, rent, internet, fees, bills
HRMarge
Multi-tenant attendance — multi-company, one panel
Modular multi-tenant time and attendance (PDKS) platform for Turkish companies. Manage multiple companies and branches from one panel; shift, overtime, leave workflows and PDKS device integrations work out of the box. Connects to payroll and ERP via API.
- Multi-company & branch in one panel
- Shift, overtime, leave workflows
- PDKS device integration
Mustafa Erbay Blog
AI-powered, fully autonomous tech blog
870+ technical writings on system architecture, network, infrastructure, security and operations. AI-powered fully autonomous publishing platform, self-hosted on my own VPS.
- 870+ technical posts
- AI-driven full-automation pipeline
- Hosted on my own VPS
Contact
Have a project idea?
For architecture decisions, enterprise infrastructure, or building a product together — find what I’m open to on my about page.
Message on LinkedIn