Mohamed Risvan
Systems architect and engineering leader

I build software that grows, and the teams that run it.

I plan big systems, build them with my own hands, and help engineers do their best work. From a college startup to platforms used every day by thousands of businesses.

Source data apps and databases Debezium spots data changes Kafka carries the messages Redpanda Connect sorts and filters Elasticsearch fast search
How data moves in a workflow system I built. It handles 5 million requests a day.
10 yrsbuilding software
2000+pharmacies served by my startup
5Mrequests a day through one system I built
4 to 20+engineers on a team I grew
What I do

Three things I am good at

I work where big technical choices meet the people who build them.

Plan systems

I design how the parts of a big system fit together, so it stays fast and reliable as it grows. Data flows, databases, logins and access, and systems that serve many customers at once.

Build with AI

I build AI voice assistants that talk to real customers on the phone. One of them handles about 80% of calls on its own, across more than 20 locations.

Lead teams

I hire engineers, teach them, and review their plans. I have hired a full team from zero and reviewed system plans for a group of over 200 developers.

Selected work

Things I have built

A few projects I am proud of, in plain words.

VoiceStack

A system that turns events into work

When something changes in many different apps, this system notices it and turns it into a task for call and contact teams. It also keeps 50,000+ contacts in sync with clinic software every day.

5M requests a day
CareStack

A base for AI voice assistants

One shared base that new AI helpers plug into, so the team does not rebuild the voice basics each time. It decides what step comes next and has a safe backup plan if the AI fails.

20,000+ patient talks a day
Pillsbee

Software for pharmacies

At my own startup I chose every product, hired every engineer, and built pharmacy software, shopping apps and a truck-hiring app. We moved everything to a new cloud with zero downtime.

2000+ pharmacies
Zoho

License limits for a security product

A main server shares licenses with many client servers. If a client goes over its limit, it gets 30 days to fix it before new devices stop sending logs. It runs with real customers.

Live in production
About me

From circuit boards to cloud platforms

I started with hardware in college. I built a pill dispenser with my own circuit boards and a 3D printer that decorates cakes. That same year, I co-founded a startup.

Then I joined Zoho and learned how large, serious software is built. Later I went back to my startup as CTO, raised money, hired a team and served over 2000 pharmacies. After that, I moved to AI voice and platform work at CareStack and VoiceStack.

I like the mix of both worlds. A founder's sense of ownership, and the care of a big company.

  • VoiceStack
  • CareStack
  • Pillsbee
  • Zoho
Contact

Let's talk.

About systems, AI, building teams, or anything in between.