Author Image

Teiva Harsanyi

Senior Software Engineer at Google

Current status: Reading Python Crash Course by Robert Nystrom

I’m a software engineer specializing in distributed systems, scalability, reliability, and observability topics. I have extensive experience designing, implementing, and operating resilient, responsive, scalable, and maintainable systems. Meanwhile, I love meeting challenges, learning, and sharing.

My life philosophy relies on 改善 (Kaizen, ‘change for better’). In a nutshell, it’s not important how fast you can be; what’s essential is to improve continuously. I strive to apply this philosophy to my personal and professional life, constantly seeking to learn and grow.

I have 12 years of experience in software engineering. I’m currently working at Google as a senior software engineer in the ML SRE team. Before that, I worked in different companies. At Docker, I was a software engineer in the registry team, maintaining systems like Docker registry, Hub & search. At Beat, I was a staff engineer in the matching domain, where I designed, implemented, and operated critical services with a strong focus on reliability and observability. At Utility Warehouse, I refactored the company’s notification platform from a distributed monolith to a microservice paradigm leading to an elastic architecture and an average latency reduction of +90%. At SkySoft-ATM, I worked in a safety-critical environment in the context of the Swiss air navigation service provider, where I designed, proposed, and implemented the company’s central data repository used to store and compute flight events. Before, I worked as a tech lead and architect at Axa and Airbus Helicopters on integration platforms.

In 2022, I published a book called 100 Go Mistakes and How to Avoid Them. In summary, it shows common programming mistakes in Go and how to fix them using idiomatic code. So far, it has a pretty cool note of 4.7/5 (avg on,, and, and I’m delighted that it helped that many people (over 8k copies sold, translated in five languages). Meanwhile, I keep writing on my blog: (50+ posts, ~800k visits).

Furthermore, you can access my GitHub page and find the list of my talks.