The Journal
The notes I would have wanted at fifteen.
Long-form notes on shipping production systems, scaling SaaS, hiring engineers, AI integration, and the engineering decisions behind Yashveer Labs — written by founder Yashveer Singh.
The CTO vs VP Engineering Distinction
The CTO and VP of Engineering are not the same role. Here is the difference and why getting it wrong costs founders team clarity and technical direction.
Tech Debt and RefactoringThe Critical Path Test Suite: A Founder's Definition
Not every feature needs tests. The critical path does. Here is what the critical path test suite is and how to build one that actually protects your product.
Software Costs and BudgetingThe Cost of \"We Will Fix It Later\": A Postmortem
Every team says it. Almost no team does it. Here is the real cost of deferred engineering decisions and what to do instead.
Software Costs and BudgetingThe Cost of Trying to Be Cheap: Founder Confessions
Cutting costs in software development is not the same as being frugal. Here is what founders get wrong when they optimize for the lowest price.
Software Costs and BudgetingThe Cost of Tech Debt: A Founder's Worst Bill
Tech debt is the hidden tax on every shortcut your team took. Here is what it actually costs and when to pay it down.
Software Costs and BudgetingThe Cost of Switching Developers Mid-Project
Switching developers mid-project is one of the most expensive decisions a founder can make. Here is what it actually costs and when it is justified.
AI Integration and Vibe Coding RescueThe Cost of Running LLMs in Production: A Realistic Budget
LLM API costs in production look different from development costs. Here is how to build a realistic budget before your AI features go live.
Software Costs and BudgetingThe Cost of Rebuilding Trust After a Bad Launch
A bad product launch costs more than the fix. It costs the reputation capital you needed to grow. Here is what rebuilding trust actually requires.
Performance OptimizationThe Cost of Overcaching: Stale Data Stories
Caching solves performance problems. Overcaching creates correctness problems. Here is the taxonomy of stale data bugs and how to prevent them.
Software Costs and BudgetingThe Cost of Internationalization: Going Global with Software
Internationalization is more than translating text. Here is what it actually costs to make a software product work correctly in multiple countries.
DevOps, Deployment, InfrastructureThe Cost of Free Tiers: When They Bite
Free tiers on cloud services and SaaS tools hide their costs until you need them most. Here is when they become expensive and how to plan for it.
AI Integration and Vibe Coding RescueThe Compliance Risk of AI in B2B SaaS
Adding AI features to B2B SaaS creates compliance questions your customers will ask. Here is how to think through the risk before you ship.
SaaS Architecture and ScalingThe Compliance Dashboard: A SaaS Asset Worth Building Internally
A compliance dashboard surfaces security and regulatory status in real time. Here is why it is worth building internally and what it should include.
Startup Failure Postmortems and FearThe Compliance Audit That Killed the Deal
Enterprise deals die in security questionnaires more often than in pricing negotiations. Here is how the compliance gap shows up and how to close it.
MVP Development and Startup BuildsThe Complete Startup App Development Process from Idea to Launch
Building a startup app is not one project. It is five sequential projects with different goals. Here is the complete process from idea to launched product.
Recruiter and Career PositioningThe Compensation Negotiation for Engineers in 2026
Engineer compensation negotiation has shifted since the layoff wave but is still negotiable. Here is how to approach it correctly in 2026's market.
Tech Debt and RefactoringThe Code Review That Actually Improves Code
Most code reviews catch bugs. The best ones improve the engineer. Here is how to make code review a tool for quality and growth, not just gatekeeping.
Startup Failure Postmortems and FearThe Co-Founder Conflict That Killed the Engineering Team
Cofounder conflict is a top predictor of startup failure. When it reaches the engineering team, the damage compounds fast. Here is how it plays out.
Startup Failure Postmortems and FearThe Cloud Bill That Crashed the Business
Cloud cost overruns are a category of startup failure that almost nobody talks about because it feels embarrassing. The narrative is "we got too popular too fast." The reality is almost always "we had no monitoring, no budgets, and no alerts on cloud spend until the invoice arrived." This post is the pattern of how it happens, reconstructed from the common threads across the incidents I have seen and heard about in the startup community.
Performance OptimizationThe Caching Hierarchy: Browser, CDN, Edge, Application, Database
Caching is the practice of storing computed results closer to where they are needed so future requests avoid the cost of recomputing them. Every modern web application has at least five caching layers: browser cache, CDN cache, edge cache, application cache, and database query cache. Each layer has different characteristics, different invalidation strategies, and different failure modes. Understanding which layer to use for which data is the difference between a fast application and one that is fast until it is not.
Tech Debt and RefactoringTest Coverage: A Metric With a Story
Test coverage tells you what percentage of your code runs during tests. It does not tell you whether those tests are meaningful. Here is how to use it correctly.
SaaS Architecture and ScalingTenant Isolation: How Much Is Enough for B2B Customers
B2B customers want their data separated from other customers. Here is how to think about the right level of tenant isolation for your SaaS product.
Security, Auth, and ComplianceTenant Aware Authorization: The Mistake That Leaks Data
Missing tenant context in authorization checks is the most common data leakage pattern in multi tenant SaaS. Here is how it happens and how to prevent it.
MVP Development and Startup BuildsTechnical Cofounder vs Hired Developer: The Decision That Decides Your Startup
Choosing between a technical cofounder and a hired developer is one of the most consequential early startup decisions. Here is the framework for making it correctly.