Reza Hosseinzadeh
Software Engineer · Founder of ReSpeak
I've spent the last ten years building software end to end — from my first PHP jobs to payment infrastructure that millions of people rely on every day. Now I'm building ReSpeak, a way to learn English through podcasts. I care about simple architecture, reliability, and code the next engineer enjoys reading.
- Now
- Founder - ReSpeak
- Prev
- Zarinpal · PodsFan · Safarijat
Experience
Founder · ReSpeak
Full-time · Tehran, Iran
ReSpeak is an English learning platform that helps you improve your listening, speaking, and pronunciation through podcasts, transcripts, and shadowing practice.
Software Engineer · Zarinpal · زرینپال
Full-time · Tehran, Iran
- Developed the new version of Zarinpal's payment gateway using microservices architecture.
- Built the Payment Gateway microservice — reduced response time through clean, optimized code and improved development velocity.
- Led the migration of critical services from monolith to scalable microservices.
- Developed the KYC microservice integrating machine learning for facial recognition and identity verification.
- Improved system reliability and reduced downtime during peak traffic.
Co-Founder · PodsFan
Co-founded a podcast platform and built it end to end with a small team.
Back-End Developer · Ide Pardazan Masir Part
Back-End Developer · Safarijat
Tehran, Iran
PHP Developer · Iranteam
Selected Work
ReSpeak
An English learning platform built around podcasts, transcripts, and shadowing practice — for listening, speaking, and pronunciation.
Zarinpal Payment Gateway
The new generation of Zarinpal's payment gateway, rebuilt on microservices — payments, ML-powered KYC, reliable at peak traffic for millions of users.
PodsFan
A podcast platform I co-founded — product and backend, end to end.
Stack
- Languages
- TypeScript, JavaScript, PHP, Go, Python
- Backend
- Node.js, PostgreSQL, Redis, Kafka
- Infra
- AWS, Docker, Kubernetes, Cloudflare
- Frontend
- React, Next.js