Brandon Card has always been involved in sports. In High School, he was a 3 sport athlete and still plays today, along side working out, doing yoga and pilates. He's heavily interested in holistic healing and alternative medicine, mentioning a big interest in quantum frequency healing, using the sun and ocean to add voltage to the body. He has also started a foundation around mental health, as sadly, he lost his co-founder to suicide, and wishes to remove the stigma from the mental health conversation.

Brandon and his co-founder realized that all software platforms around contracts were directed towards lawyers - not towards finance. This was mind blowing, as negotiations are mostly finance driven, not based on the paragraphs of legal jargon. Brandon wanted to build something to serve this need.

This is the creation story of Terzo.

Sponsors

• Incogni
• NordProtect
• Vention
• CodeCrafters helps you become a better engineer by building real-world, production-grade projects. Learn hands-on by creating your own Git, Redis, HTTP server, SQLite, or DNS server from scratch. Sign up for free today using this link and enjoy 40% off.
• Full Scale
• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://terzo.ai/
• https://www.linkedin.com/in/brandonrcard

Juan DeAngulo was born and raised in South America - then eventually, came to the status in 2017 for college to play Tennis. He kept playing throughout college and into his 40's, at which point he switched to golf and never picked up a racket again. He's been married for 25 years, with 2 older kids - one in law school, and one studying software development. As a family, they enjoy comedy, which funny enough was an acquired taste for Juan. They also love being outdoors, anywhere they can get out and about.

At a prior company, Juan and his team created proprietary algorithms to intelligently predict and tie revenue. These models were based on tried and true processes. While Juan was obtaining an advanced degree at Harvard, his current venture was incubated around predictive revenue, and these algorithms.

This is the creation story of Inselligence.

Sponsors

• Incogni
• NordProtect
• Vention
• CodeCrafters helps you become a better engineer by building real-world, production-grade projects. Learn hands-on by creating your own Git, Redis, HTTP server, SQLite, or DNS server from scratch. Sign up for free today using this link and enjoy 40% off.
• Full Scale
• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://inselligence.com/
• https://www.linkedin.com/in/juandeangulo/

Today, we are continuing our series, entitled Developer Chats - hearing from the large scale system builders themselves.

In this episode, we are talking with Petr Petrenko, Senior PHP Backend Engineer at Bumble. Petr will take us through his developer journey, in working on large scale backends, managing the tension between stability and innovation, and designing systems to interact with culturally different economies.

Questions

• You’ve worked on large-scale backends that serve millions of users. At what point do systems start to outgrow the teams that built them?
• At some point, every mature backend reaches a stage where rewriting is no longer realistic. How do you recognize when a system has crossed that line, and what’s the right way to handle it?
• There’s always this tension between stability and innovation. How do you decide when a system needs refactoring versus when you just need to live with the technical debt?
• Let’s talk about the human side of legacy systems — what have you learned about culture, documentation, and knowledge transfer that keeps old systems alive and reliable?
• You’ve also built and maintained complex payment systems for global users. What’s something most engineers underestimate about cross-border transactions?
• When you’re designing systems that deal with different currencies, laws, and tax regulations, how do you balance the technical with the ethical — for example, user privacy or data sovereignty?
• For engineers listening who want to build something durable — not just fast — what advice would you give about writing code that will still make sense years from now?
• One of your most impressive projects is a high-performance image-matching system you built yourself, capable of scanning tens of millions of images with sub-second results. Can you walk us through the moment you realized you needed to redesign the system — and what engineering choices made that level of performance possible?
• You’ve also worked on billing systems and fraud mitigation at scale. Was there ever a moment when you had to choose between a technically “clean” solution and a solution that better protected users or the business? How did you make that call?

Sponsors

• Incogni
• NordProtect
• Vention
• CodeCrafters helps you become a better engineer by building real-world, production-grade projects. Learn hands-on by creating your own Git, Redis, HTTP server, SQLite, or DNS server from scratch. Sign up for free today using this link and enjoy 40% off.
• Full Scale
• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://www.bumble.com/
• https://www.linkedin.com/in/petr-petrenko-006534150/