The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org
FexingoLucas and Luna sit down in front of a whiteboard to dissect the decisions that shape technical organizations. Each episode of The CTO Podcast with Fexingo examines a specific engineering leadership challenge — from scaling a microservices architecture without creating a distributed monolith, to managing the cognitive load of a 200-engineer org, to choosing between a monorepo and polyrepo strategy ... more
| Publishes | Daily | Episodes | 97 | Founded | 2 months ago |
|---|---|---|---|---|---|
| Number of Listeners | Category | Business | |||
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Latest Episodes
In this episode of The CTO Podcast, Lucas and Luna dive into the engineering challenges behind GitLab's continuous integration platform. With over 5 million CI jobs running daily in early 2026, GitLab had to redesign its job scheduling, artifact stor... more
Lucas and Luna dive into why MongoDB, after years of relying on the WiredTiger storage engine, decided to build a new storage layer from scratch. They explore the architectural trade-offs between B-trees and LSM trees, how the company handled write a... more
In this episode, Lucas and Luna explore how Square's engineering team rebuilt its payments processing stack to handle unreliable internet connections. They dive into the specific design decisions behind Square's offline mode — from local transaction ... more
Episode 94 of The CTO Podcast. Lucas and Luna examine the engineering behind the UK's Pensions Dashboard programme, which went live in March 2026. They walk through the core technical decisions: a federated data model where the dashboard doesn't cent... more
In this episode, Lucas and Luna dive into how Notion rebuilt its sync engine from the ground up to handle over 100 million blocks per workspace. They explore the shift from a naive JSON-based sync to a conflict-free replicated data type (CRDT) archit... more
This episode dives into the real technical challenge behind Figma's multiplayer architecture: not just cursor sync, but handling over 100,000 simultaneous vector objects in a single file. Lucas and Luna unpack how Figma moved from a naive OT approach... more
How Uber rebuilt its dispatch engine to handle 30 million daily rides without a single downtime event. Lucas and Luna break down the core architectural shift from a monolithic matching service to a fully distributed, event-driven system that uses pro... more
In episode 90 of The CTO Podcast, Lucas and Luna unpack the architectural story behind MongoDB's election protocol redesign. In 2023, MongoDB's replica sets could reliably handle about 10,000 writes per second per primary before election latency beca... more
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Frequently Asked Questions About This Podcast
What is This Podcast about and what kind of topics does it cover?
A practical deep-dive into engineering leadership and architectural strategy, focusing on real-world trade-offs behind large-scale tech decisions. Episodes explore how CTOs balance velocity, reliability, and cost when reshaping platforms, rewriting core systems, or choosing between monoliths and distributed architectures. Concrete case studies—from sunsetting complex integrations to migrating core stacks and building internal platforms—highlight decision-making frameworks, governance, risk management, and leadership dynamics. The show favors nuanced, non-splashy insights over generic “best practices,” often ending with unresolved tensions that invite listeners to apply similar thinking within their own teams.
Noteworthy angles include the ... more
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this podcast launched 2 months ago and published 97 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.
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Recent guests on this podcast include:
1. Oscar Stall
2. Sujata Bhatia
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