Build vs. Buy

Mang-Git sits down with Matthias Wagner, founder of Flux.ai, to explore how AI is finally making hardware design as accessible as software development. Matthias shares how Flux uses a combination of LLMs and proprietary spatial models to let anyone design PCB boards through a simple chat interface – and why LLMs alone fall flat when it comes to physical, geometric reasoning. The conversation digs deep into the build vs. buy dilemma in an era of rapidly shifting AI tooling, from when to roll your own stack to when to trust a third-party abstraction. Matthias also makes a case for using high-level AI agents like Devin to stop chasing the latest models and start compounding on integrations instead. 1:07 — Intro & Guest Background 4:30 — The Origin of Flux.ai 6:51 — Build vs. Buy: The AI Stack Reality 9:54 — Abstraction Layers & Developer Tooling 13:34 — How Flux.ai Uses AI to Design Hardware 15:53 — Where LLMs Fail: Spatial & Physical Reasoning 17:30 — Feedback Loops as the Real Moat 26:37 — Deterministic Tools vs. ML Models: How to Decide 31:27 — Lightning Round & Wrap-Up This episode was brought to you by Anvil [https://useanvil.com].

Mang-Git interviews Danil Kolesnikov, previously a founding engineer at Shepherd, a commercial insurance MGA for construction that underwrites on behalf of carriers and distributes through brokers. He explains Shepherd’s thesis that tech-enabled contractors are better risks and should receive better pricing and coverage. The core build-vs-buy decision was whether to buy a policy administration system or build one; Shepherd chose to build due to vendor pricing that takes a percentage of premium (a lasting “tax”) and the need for flexibility and speed. Danil says owning the platform improved onboarding and day-one productivity across underwriting, claims, and compliance, and helped Shepherd deliver quotes in under 24 hours versus weeks for legacy carriers. They also discuss the complexity of commercial lines, a painful Salesforce integration, and how AI shifts the bottleneck from coding to domain understanding and workflow automation.  00:00 Introductions  02:38 What an MGA Does  04:30 Shepherd’s Tech Advantage  06:10 The Build vs Buy Call  11:45 Evaluating PAS Vendors  13:17 Why Owning the Stack Wins  16:14 Org Design and Automation  18:59 Vertical Integration and Salesforce Pain  22:56 Secret Sauce Not for Sale  24:12 Lessons and AI Prompting  26:22 Lightning Round and Wrap Up This episode was brought to you by Anvil [https://useanvil.com].

Rowland Hobbs, founder and CEO of Stake, joins the show to talk about his startup background and Stake’s mission to help renters build wealth amid rising rents. Stake offers cash-back and financial services across a network of about 550,000 homes, including free checking that rewards rent payments and credit building by reporting on-time rent to the three bureaus, benefiting renters while reducing landlord delinquencies. Rowland explains Stake’s model, funded by landlords for leasing plus banking, brand, property, and government partners, including Colorado Renter Rewards. For a build-vs-buy decision, Stake tested distributing renter incentives through rental brokers, saw higher lease conversions, and acquired the largest Texas rental brokerage, Yu Move Free, to accelerate go-to-market and onboard renters into Stake’s broader platform. 00:00 Welcome and Introductions 01:02 Roland’s Startup Journey 02:13 Photo Startup Lessons 03:56 What Stake Does 05:06 Business Model and Network 08:24 Build Versus Buy Setup 08:49 Testing Brokers Then Buying 10:49 Rental Brokers Explained 14:01 Why Acquire Not Build 19:08 Costco Model for Renters 22:07 Deposits and Trust 24:05 Favorite Recent Purchases 26:46 Personal Growth and Yoga 28:18 Closing and Farewell This episode was brought to you by Anvil [https://useanvil.com].

Michael Grinich, founder of WorkOS, joins Mang-Git to discuss challenges and insights from his career, including his journey from founding Nylas to creating WorkOS. They delve into the critical considerations for build versus buy decisions, the impact of AI on software development, and the importance of leveraging stable infrastructure. The episode highlights how modern AI tools are accelerating enterprise readiness and shaping the future of software development. 00:00 Introduction 01:51 Michael's Early Career02:59 Challenges with Enterprise Adoption 04:23 Founding WorkOS 04:59 The Shift in Enterprise Software 08:03 The Rise of AI and Enterprise Adoption 08:38 The Importance of Enterprise Capabilities 09:40 Build vs. Buy: The Time Machine Argument 14:06 AI's Role in Modern Development 16:15 The Future of Development and Infrastructure 24:58 The Hidden Infrastructure of New York City 25:38 Frameworks for Build vs. Buy Decisions 26:28 The Value of Time in Business Decisions 28:31 Challenges with Vendor Lock-In 29:10 The Future of Internal Tools and AI 34:18 Personalized Software and Its Implications 40:18 Exciting Projects and Personal Favorites 44:23 Conclusion and Final Thoughts This episode was brought to you by Anvil [https://useanvil.com].

In this episode of Build vs. Buy, Mang-Git hosts Alex Klarfeld, founder and CEO of Supergood, previously co-founder of Divvy Homes. They discuss Alex's career journey, the business model of Supergood, which creates unofficial APIs for enterprise portals using automated reverse engineering, and the company's growth strategy. The conversation highlights a build versus buy decision Alex faced with integrating Temporal for job execution monitoring, ultimately leading them to inadvertently develop their own solution. 00:00 Introduction01:38 Alex's Background and Supergood Overview02:36 Supergood's Unique Approach to APIs04:07 Challenges and Solutions in API Integration06:42 Technical Insights into Supergood's Operations10:53 The Evolution of Supergood13:43 Build Versus Buy: A Deep Dive21:25 Challenges with Temporal 23:39 Exploring Alternative Vendors24:51 Choosing Masra for Better Support28:30 Building In-House Solutions30:58 Reflections on Vendor Relationships33:51 Exciting Projects and Future Plans37:07 Product Recommendations and Closing Remarks This episode was brought to you by Anvil [https://useanvil.com].

In episode 23, Mang-Git chats with Chris Dean, Co-Founder and CEO of Treasury Prime. Chris shares his journey from machine learning researcher to serial entrepreneur, culminating in the founding of Treasury Prime. The discussion covers Treasury Prime's unique business model, which focuses on providing APIs to banks for managing FinTech relationships safely. They delve into the complexities of the American banking system, the challenges of ensuring safe money management, and the merits of building versus buying solutions. The conversation also touches on the use of AI in enhancing productivity and the future of FinTech integrations. 00:00 Introduction  02:03 Chris Dean's Background and Journey 05:17 Founding Treasury Prime 07:37 Treasury Prime's Unique Business Model15:18 Challenges and Decisions in FinTech20:39 Building a Robust Workflow System 23:45 Handling System Failures and Retries 25:32 Reconciling Financial Discrepancies 26:03 AI in Banking Operations 28:22 Regulatory Challenges and Opportunities 32:09 The Importance of Optionality 32:42 Personal Insights and AI Tools 38:50 Conclusion and Future Outlook This episode was brought to you by Anvil [https://useanvil.com].

John-Denis Greze joins Mang-Git Ng to dive into JDG's extensive career in tech, including his tenure as CTO at Plaid. JDG shares his decision-making process on build vs. buy, highlighting examples from his time at Plaid. He also discusses his current venture, Town AI, which aims to automate small business tax prep through AI. The conversation touches on the challenges and joys of being a founder, including management philosophies and leveraging modern AI tools. 00:00 Introduction and Guest Welcome 01:33 JD's Background and Career Journey 02:25 Joining Dropbox and Career Growth 04:59 Transition to Plaid and Leadership Roles 06:51 Challenges and Reflections on Management 08:52 Networking and Fairness in Tech 14:20 Management Lessons and CTO vs VP of Engineering 23:18 Starting Town and the SMB Tax Space 26:32 Building Products in Existing Markets 28:26 The Build vs. Buy Dilemma 30:58 Strategic Decisions in Product Development 38:17 AI and Rapid Prototyping 43:53 Personal Projects and Tools 47:14 Final Thoughts and Recommendations This episode was brought to you by Anvil [https://useanvil.com].

Tom Elliot, founder of Ocuroot, joins Mang-Git to discuss Tom's background in the tech industry, his experiences at companies like VMware and Yext, and the inception of Ocuroot. The conversation digs into build vs buy decisions, emphasizing the case study of monitoring tool Checkly. Tom shares insights on the complexities of self-built solutions versus external services and how to present these decisions to senior leadership. They also explore the benefits and challenges of various AI development tools.00:00 Introduction and Guest Welcome01:33 Tom Elliot's Career Journey02:50 Challenges and Innovations at Yext03:55 The Concept and Benefits of OccuRoot11:27 Build vs. Buy: A Real-World Example15:04 The Decision-Making Process21:12 Reflections on Build vs. Buy28:42 Fun Questions and Closing Remarks This episode was brought to you by Anvil [https://useanvil.com].

Pulkit Agrawal, co-founder and CEO of Chameleon, joins Mang-Git Ng to discuss Pulkit's journey founding Chameleon, a tool that simplifies user onboarding and adoption for software applications. Pulkit shares insights into the importance of personalized user experiences and the intricacies of build versus buy decisions. He elaborates on his company's switch from custom-built UI components to using Radix UI, the role of trust in choosing software, and the tension between self-service growth and sales-assisted models. 00:00 Introduction 02:06 Pulkit's Background and Chameleon Origin 03:35 Challenges in User Onboarding 05:57 The Impact of AI on UI Development 09:45 Build vs Buy: A Personal Experience 13:00 Choosing Radix UI for Speed and Trust 16:15 Factors Influencing Build vs Buy Decisions 22:04 Chameleon's Go-to-Market Strategy 26:07 Personalization in Onboarding and Campaigns 31:31 Reflecting on the Entrepreneurial Journey 32:56 Exciting New Projects and Personal Updates 34:11 Product Recommendations and Closing Remarks This episode was brought to you by Anvil [https://useanvil.com].

On this episode of the Build vs. Buy podcast, Mang-Git talks with Sumeet Vaidya, the founder and CEO of Crafting. Sumeet shares his career journey, which includes roles at Facebook, Uber, and Discord, and his current company, Crafting, which focuses on developing enterprise-ready cloud dev environments. They discuss the evolution of software development from local applications to complex cloud-based environments, the challenges of developer collaboration, and the costs associated with running multiple services. They also explore the importance of trust and reliability in enterprise products, particularly in the context of building vs. buying internal tools. The conversation wraps up with a discussion on the future potential of AI tools and personal anecdotes from both Mang-Git and Sumeet.00:00 Introduction 01:30 Sumeet's Background 02:59 The Evolution of Development Environments 04:51 Challenges in Scaling Development 08:46 The Future of Crafting 11:42 In-House Solutions vs. Off-the-Shelf 17:29 Trust in Internal Tools 19:41 Challenging 'Move Fast and Break Things' in Enterprise 21:21 Building Trust in Enterprise Applications 24:03 Addressing Developer Control and Customization 26:14 Deploying in Customer Clouds 28:27 Reflections on Internal Chat Applications 30:40 Excitement for AI and Personal Life Updates 33:03 Fun Questions and Product Recommendations This episode was brought to you by Anvil [https://useanvil.com].