Episode 5 of The Technical Co-Founder Podcast dives into a concrete cloud-cost optimization case study. Lucas and Luna walk through how a real startup's engineering team reduced their AWS bill by 40 percent — not by turning off servers, but by rethinking architecture patterns, choosing the right instance families, and negotiating reserved-instance pricing. They break down the specific decisions: moving from on-demand to three-year committed-use discounts, switching from general-purpose to compute-optimized instances for their ML workloads, and implementing auto-scaling with spot instances for batch jobs. The episode also covers the hidden cost of data transfer between regions and how one simple change — colocating services in the same availability zone — saved $12,000 a month. No fluff, no theory: just the playbook a CTO actually used. Hosts Lucas and Luna keep it conversational and specific, with numbers you can take to your next budget meeting.

#CloudCosts #AWSOptimization #CTOPlaybook #StartupEngineering #FinOps #Infrastructure #CostReduction #TechLeadership #EngineeringCulture #ReservedInstances #SpotInstances #DataTransfer #AutoScaling #StartupLessons #BusinessAndTechnology #FexingoBusiness #BusinessPodcast #TheTechnicalCoFounderPodcast

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Every technical co-founder has faced it: the moment a co-founder or early engineer insists the codebase is 'too messy' and needs a full rewrite. Lucas and Luna unpack what tends to happen next — the six-month rebuild that ships nothing, the startup that dies in the refactor. They walk through a concrete case: a fintech startup that burned $1.2 million on a rewrite before realizing the original code, for all its warts, actually worked. They discuss the one question to ask before any rewrite, the difference between 'technical debt' and 'bad architecture,' and why well-funded startups are more likely to fall into the trap. Lucas shares a rule of thumb from a CTO who's overseen three successful pivots: never rewrite unless you're also changing the business model. Luna pushes back on the 'move fast and break things' mentality and asks when a rewrite is actually the right call. Specific, practical, and grounded in real startup dynamics.

#TechnicalCoFounder #CodeRewrite #TechnicalDebt #StartupEngineering #CTO #Fintech #SoftwareArchitecture #StartupLessons #EngineeringCulture #FounderAdvice #Refactoring #BusinessAndTechnology #FexingoBusiness #BusinessPodcast #LucasAndLuna #TheTechnicalCoFounder #StartupPivot #ShipOrDie

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Episode 3 of The Technical Co-Founder Podcast. Most technical founders over-engineer their first product, spending months building infrastructure that nobody wants. Lucas and Luna unpack the Minimum Viable Product philosophy using the story of Buffer's Joel Gascoigne, who launched a two-page landing page with no product, just to test demand. They discuss Reid Hoffman's famous line about being 'embarrassed by your first product,' the tension between craftsmanship and speed, and how to decide what to cut. If you're building something from code and feeling the itch to polish before launch, this episode will save you months of wasted effort. Listeners who find this useful can support the show at buy me a coffee dot com slash fexingo.

#MinimumViableProduct #MVP #Buffer #JoelGascoigne #StartupAdvice #ProductLaunch #LeanStartup #EricRies #TechnicalCoFounder #FirstProduct #BuildMeasureLearn #StartupStrategy #Entrepreneurship #BusinessAndTechnology #TechnicalCoFounderPodcast #FexingoBusiness #BusinessPodcast #Bootstrapping

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In this episode of The Technical Co-Founder Podcast, Lucas and Luna explore why engineering founders often build the wrong feature first — and how to fix it. They dive into the story of a startup that spent six months building a scalable back end before talking to a single customer, burning through seed capital on unused infrastructure. Lucas breaks down the distinction between 'buildable' and 'valuable', citing data that 70% of early-stage technical work gets rewritten or scrapped. Luna shares a counter-example from her own experience building an internal tool that accidentally became the product. The conversation covers concrete frameworks like the 'minimum viable test' and the '90-day rule' — practical heuristics any technical founder can apply tomorrow. No abstract theory, just specific decisions that separate funded survivors from vaporware.

#TechnicalCoFounder #EngineeringFounders #MinimumViableProduct #StartupMistakes #BuildVsBuy #ProductMarketFit #SeedStage #LeanStartup #CTO #SoftwareEngineering #TechStartups #FounderAdvice #CustomerDevelopment #FeatureSelection #Business #Technology #FexingoBusiness #BusinessPodcast

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In the debut episode of The Technical Co-Founder Podcast, hosts Lucas and Luna dissect the story of Brex, the corporate credit card startup that reached a $12 billion valuation while losing hundreds of millions of dollars. They explore the technical co-founders' decision to build a rewards engine that cost $10 million a year to run before the company had significant revenue, the treacherous moment when the bank partner pulled out three weeks before launch, and the engineering-first culture that allowed them to rewrite their core infrastructure in nine months. Lucas and Luna explain why Brex's story is a case study in the tension between building for scale and building for survival, and they set the tone for future episodes—conversations that get into the specific technical and business trade-offs founders make when they come from code. No hot takes, no breathless hype—just the real numbers and decisions that shaped a unicorn that took venture money and lost money at the same time.

#Brex #TechnicalCoFounder #HenriqueDubugras #PedroFranceschi #CorporateCreditCards #Fintech #VentureCapital #Unicorn #StartupEconomics #EngineeringCulture #TechDebt #RewardsProgram #BankingPartnerships #LossLeader #ScaleVsSurvival #BusinessAndTechnology #FexingoBusiness #BusinessPodcast

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