CaSE: Conversations about Software Engineering

Technology Governance with Sarah Wells Jun 15, 2026 2748 Sarah Wells spent years as Technical Director at the Financial Times, wrangling thousands of microservices and the technology decisions that come with them. In this conversation she shares how the FT kept things from spiralling out of control without turning into a bureaucracy. We talk AI tools and shadow IT, why "best tool for the job" can quietly become your worst nightmare, and how a simple two

Agent Harness, State of Play, Risk and AI Company Culture Mar 17, 2026 5113 Birgitta, Heinrich and Sven look back at the latest developments in AI-assisted development, tools and practices which emerged in 2025 and work for teams. Furthermore they discuss a few topics like "where does the rigor go in AI assistance" from the future of software development retreat in Utah

Guiding, not ruling: Architecture Governance Approaches Feb 2, 2026 4304 We want engineering teams to be as autonomous as possible, but also want that every team runs in the same direction. In this episode, Heinrich Hartmann and Sven Johann explore four approaches of guiding, not ruling, governance: golden paths, architecture advice processes, architecture principles and technology radars as practical tools for aligning autonomy with long-term organisational health.

Andrew Harmel-Law on Better Architecture Decision Making for Everyone Jan 13, 2026 4868 ### Description How do teams actually make better architectural decisions—without gatekeepers, power imbalances, or meetings full of opinions instead of insights? In this episode, Andrew, Heinrich, Sven and Alex discuss how the advice process, architecture decision records, and practiced sociotechnics help to make software architecture collaborative and transparent.

Data Marketplace, Data Products and Data Contracts Sep 22, 2025 4777 Alex, Heinrich and Sven talk with Simon Harrer about his journey to data contracts and marketplaces from being PhD in Software Engineering and Software Engineering consultant. They discuss what a data contract is and how it is build up, can be discovered in a data marketplace and how it relates to a data product. They close with the unavoidable MCP topic in the context of a data marketplace.

Data Architecture with Christoph Windheuser Jul 2, 2025 6548 The three of us talk with Christoph Windheuser about the styles in data architecture: data mesh, data lake (house) and data warehouse and how to make a decision. In between Christoph explains data quality, data lineage, and data catalog - cornerstones of any modern approach. We end with emerging trends, DuckDB and data governance.

Mirko Novakovic on Waves of Innovation and Observability Product Management Jun 5, 2025 6387 In this episode of the CaSE Podcast, Mirko Novakovic, a seasoned entrepreneur and investor, shares his journey through the waves of technological innovation—from the early days of online banking to the rise of AI and open telemetry. We explore with him how the lessons learned in diverse industries, including the food business, can reshape our approach to software development and architecture, emph

Architecture Sensitivity Points; Interactions with AI Assistance Apr 8, 2025 5393 In this episode of the CaSE Podcast, Sven Johann, Alex Heusingfeld, and Heinrich Hartmann dive into the concept of sensitivity points in software architecture, using the recent Volkswagen data leak as a striking example. They explore how seemingly minor architectural decisions and code changes can carry massive implications when balancing trade-offs like data privacy versus functionality. The tri

Ole Lensmar - From Swagger to TestCube: Evolving Testing Practices in the Kubernetes Era Mar 17, 2025 5675 How do you ensure the reliability of your cloud-native applications in an ever-evolving landscape? In this episode of CaSE, we dive deep into the intricate world of cloud-native testing with Ole Lensmar, the mind behind SoapUI, serial entrepreneur and Founder of TestKube. Join us as we explore the challenges of testing in Kubernetes environments, the balance between automation and manual testing,

Theo Schlossnagle on Meat, Machines, and Mastery in Software Engineering Feb 25, 2025 6642 Theo Schlossnagle is a world-class software engineer, serial entrepreneur and owner of a butcher shop. In the podcast he unpacks the mindset, practices, and strategies that have shaped his approach to software development. From the power of curiosity to the challenges of debugging distributed systems, we explore what it takes to build resilient, maintainable software in an ever-evolving landscape.

New Hosts and Formats, Observability Costs and Training Feb 3, 2025 4902 The CaSE Podcast returns with new hosts and a renewed focus on software architecture, reliability engineering, and data engineering. In this episode we start with discussing the cost of observability, sparked by Coinbase’s leaked $65 million Datadog bill, raising questions about how much organizations should spend on monitoring. We also discuss the most important content of observability training

Aino Corry on Better Tech Meetings Sep 11, 2023 4154 Aino explains to Sven what skills are required to make meetings more successful. They talk about the different roles of meeting attendees. They continue with the thinking process to organize a meeting: do we need it at all? What is the expected outcome? Who should be invited? How long it should take? Do we need preparation for the attendees? Icebreakers? How do we craft an agenda? Then they discus

Angelo Veltens on Solid May 16, 2022 2665 Solid is a specification that lets people store their data securely in decentralized data stores called Pods. But why do we want to keep our data decentralized? What problems does Solid solve? In this episode, Angelo Veltens explains to Lucas Dohmen the advantages (but also potential disadvantages) of this project.

Mark Seemann on heuristics for software engineering Mar 14, 2022 3643 Stefan Tilkov talks to Mark Seemann about his book “Code that fits in your head”, heuristics about software engineering, and the role of craftspeople and engineers. They dive into three selected topics: Vertical slices, triangulation, and rhythm.

Chris Richardson on Service Templates and Service Chassis Feb 21, 2022 3623 How do you enable a developer to quickly start the development of business logic of a new microservice without losing too much time on setting up everything else like monitoring, tracing, dependency management, security, configuration and much more. After the motivation, they move from service templates to service chassis, continue with governance as code and close with the possible need of produc

Adam Tornhill on Software Design X-Rays Jan 17, 2022 3272 Sven Johann talks to Adam Tornhill about the link between how organizations write code and how teams work together. Adam Tornhill can make this link visible to help improve your team’s code and your organization's work. The interview is based on Adam's book "Software Design X-Rays".

Manuel Pais on Team Topologies Oct 25, 2021 3758 Sven Johann talks with Manuel Pais about the challenges of development teams being asked to be responsible for many topics like their problem domain, technology/programming languages, security, infrastructure and operations, UX, etc. Manuel explains what cognitive load is, which types of cognitive load exist and where it can be reduced and where not. They then discuss the four fundamental team top

Michele Hansen on Customer Interviews and Deploying Empathy Oct 4, 2021 2960 Michele shares her journey in the software industry and how she got involved in product development. Customer interviews are not just something for product people -- Michele shares concrete ways that developers can get value from talking to their customers. She also shares a few tips for how to get involved with the customer research process and how to convince stakeholders of the value of the pro

Eric Normand on Functional Thinking Jun 21, 2021 5810 In this conversation about software engineering, Lucas Dohmen talks with Eric Normand. Eric first explains the origins of his book, Grokking Simplicity. He explains how to think in calculations, actions, and data. Lucas asks him about real-life situations dealing with concurrency and how he would solve them thinking functionally. Then they dive deep into their conversation about immutability, type

Nicolas Steenhout on Accessibility Jun 1, 2021 3278 In this episode, web accessibility expert Nicolas Steenhout talks to Stefan Tilkov about ways to improve web sites to make them usable by everyone. They cover the basics of web accessibility, the role of frameworks, common pitfalls and how to overcome them, blueberry muffins, and the perils of snake oil vendor tools.

Joy Heron on Responsible Web Applications May 10, 2021 4486 In this episode of the CaSE Podcast, Lucas Dohmen talks to Joy Heron about Responsible Web Applications. They start talking about responsive web design and how it works nowadays with features like CSS Grid and Flexbox. Then Joy explains how to make a website usable with assistive technologies. Responsive and Accessible — That’s how we can create a responsible web application.

Alex Bramley on The Art of SLO, Part 3 May 3, 2021 4646 Alex Bramley continuous his conversation with Sven Johann. They begin with how granular you should monitor your user journeys and then discuss error budget policies in depth. They continue on how to iterate on SLIs, SLOs and error budget policies. They close the conversation with SLO alerting.

Alex Bramley on The Art of SLO, Part 2 Apr 26, 2021 3335 Alex Bramley continuous his conversation with Sven Johann. They start with what external and internal dependencies do with your availability requirements and how you calculate availability if you have a microservices dependency tree. They look into how you can introduce SLOs to your organisation. After that, they switch to measure user happiness with your monitoring system, measurement windows and

Alex Bramley on The Art of SLO, Part 1 Apr 19, 2021 4257 Alex Bramley talks to Sven Johann about the basics of service level objectives. They begin with terminologies (SLI, SLO, SLA, Error Budget), look at costs of outages and discuss what reliability has to do with customer happiness. They continue with having 100% reliability is the wrong target and what’s possibly the right target. Alex then explains how to get started with collecting data about your

Simon Brown on Software Architecture Mar 29, 2021 2855 Simon Brown talks to Stefan Tilkov about software architecture – the importance for developers, its role in agile software development, documentation and tooling, and the importance (or lack of importance) of UML.

Eoin Woods on Bringing Systems into Production and Keeping them there Mar 1, 2021 5387 Eoin Woods discusses with Sven Johann all the things developers need to know to bring systems successfully into production and how to keep them there. They discuss production environments, what goes wrong in production, architectural requirements for operations, cost of very high availability, stability and capacity, communicating operational concerns, observability, learning from incidents, chaos

Christin Gorman on Why large projects fail and what to do about it Jan 28, 2021 3688 In this episode, Stefan talks to software developer Christin Gorman about her experience with very large software projects and the reasons why they fail, especially in the public sector. The two address issues of size, approaches that do and don’t work, share some of their favorite failure stories and try to enumerate some strategies to do something about them.

Artur Ortega on GraphQL Jan 4, 2021 4019 In this episode, Artur Ortega explains to Stefan Tilkov what GraphQL is, how it came to be, and how it differs from REST. Predictably, the two debate whether it’s better or not, but also spend some time going over its technical details and applicability to different usage scenarios.

Markus Völter on Language Engineering Oct 7, 2020 4912 In this episode, Markus Völter talks with Stefan Tilkov about language engineering and its connection to domain-driven design. Picking up from their past interactions in various different podcasts, the two agree and disagree fundamentally in equal parts, on topics such as the usefulness of DSLs, the costs and benefits of domain experts writing code, and the tradeoffs of various architectural appro

Birgitta Böckeler on Cultivating Architecture Principles Aug 24, 2020 2649 Birgitta Böckeler talks with Sven Johann about cultivating architecture principles. They first discuss what architecture principles are, why they are useful, how they are structured and how they help to guide decision making across multiple teams. They then talk about their lifecycle: who creates them, checks if they are aligned with business goals, prioritizes them, how they should be communicate

Rachel Andrew on contributing to CSS and CSS Layout May 28, 2020 2794 Joy Heron talks with Rachel Andrew about CSS Layout. Rachel shares her journey as a web developer and how the web has changed over that time. They discuss Rachel’s work with the CSS working group and how developers can get involved to improve the web for the future. Rachel also talks about the current status of CSS layout and what we can expect in the near future. To wrap up, Rachel shares some pr

Daniel Bryant on Service Meshes and API Gateways for Application Modernization May 7, 2020 5629 Daniel Bryant talks with Sven Johann about the business problems to modernize applications. They need to be decoupled from the compute fabric and the network fabric and Daniel explains the reasons for that, what products are available and what strategies the different cloud vendors follow. They move on with how to get started, questions to select an API gateway, technologies behind them and the ch

Mike Sperber on Functional Architecture Apr 16, 2020 4054 Does functional programming matter? Stefan and Mike continue an interesting conversation they had on Twitter: Does the style of programming matter if you look at it from a larger distance? Mike describes two distinguishing characteristics of functional programming: Immutable data and high-level models, and how they influence the architecture of your application.

Peter Elger on Commodity AI Feb 27, 2020 3828 Peter Elger talks with Sven Johann about AI as a service - commodity web services offered by large cloud providers, which make it very easy to use AI in your application just by using an API. They start the discussion with the typical AI use cases companies in finance, retail and so on have and which of those are already as a commodity available and which are not. They then discuss how those APIs

Lars Hupel on Algebraic Design Feb 6, 2020 3683 In this episode of the CaSE podcast, Lucas talks to Lars Hupel of Typelevel-fame about algebraic design. Lars starts to explain how the expression problem views the difference between the functional and Object Oriented style of programming. He then explains the concept of an algebra – from coupling trains to CRDTs. This leads to a discussion on comprehensive and iterative thinking styles and how d

Ryan Singer on Shape Up Jan 9, 2020 4774 In this Conversation about Software Engineering, Stefan Tilkov talks with Ryan Singer about Shape Up. Ryan works on the product strategy for Basecamp. Over time the company started growing, and they needed to step up how they managed their product development work. In his book Shape Up and this podcast, Ryan shares the methodology Basecamp uses nowadays.

Felienne Hermans on Programming Education Dec 19, 2019 3924 In this episode, Stefan Tilkov talks with Felienne Hermans, associate Professor at Leiden University in the Netherlands heading the Programming Education Research Lab. They talk about programming education with a focus on people learning their first programming skills and how the current approach in schools and university is flawed. Felienne explains the concept of deliberate practice and code voc

Philippe Kruchten on Managing Technical Debt Jul 8, 2019 3683 In this episode, Sven Johann hosts Philippe Kruchten, the author of the Managing Technical Debt book. They talk about the research leading to the book and the practical implications the book and the research offer. They start the conversation with discussing terms: technical debt, interest, principal and then start with technical debt on the code level, e.g. code smells, tests and refactoring foll

Sam Newman on Insecure Transit – Microservices Security May 17, 2019 4886 In this episode, Sven Johann hosts Sam Newman, the author of the first Microservices book, to talk about security in the world of Microservices. They discuss why and where it is different to security in a monolithic architecture and why developers must care. They start with automatically rolling out passwords, credentials and API keys in a secure way and continue with patching containers and secur

Richard Rodger on Message-based, Generic Microservices Feb 19, 2019 3847 In this episode, Stefan Tilkov talks to author and microservices expert Richard Rodger about his approach to microservices, which focuses on small services that exchange messages, are built using a “generalize first” approach, and rely on content-based routing to allow for dynamic evolution of the resulting system.

Mentoring Engineers with Steve Vinoski Aug 14, 2018 3294 In this episode, Stefan Tilkov hosts well-known distributed systems expert Steve Vinoski to talk about lessons learned in 30+ years of software engineering. In their conversation, they cover topics such as what to learn and what to avoid, how to deal with zealous and disillusioned developers, the relation of engineering to other disciplines, ethics and patents, careers and coding, publishing and p

Micro Frontends with Gustaf Nilsson Kotte Jul 5, 2018 4454 In this conversation about software engineering, Gustaf Nilsson Kotte, web architect at IKEA, talks to host Stefan Tilkov about ways to build large web sites and applications with multiple teams. Topics covered include team organization and Conway’s law, horizontal vs. vertical splits, and options and tools for server-side and client-side integration.

Web Frontend with Lucas Dohmen Jun 7, 2018 3845 Joy Clark talks with Lucas Dohmen about Web Front-End development. They first discuss the role of front-end development and frontend architecture. Lucas then explains his view on the role of JavaScript and the separation between front-end and back-end development. They continue their discussion by looking at the role of design and UX in front-end development and how styleguides can help. Then Luca

Problem Solving and Clojure 1.9 with Rich Hickey May 3, 2018 3600 Joy Clark talks with Rich Hickey about Clojure and Datomic and the reasons that Rich decided to design them the way that he did. They discuss the dependency problem and how we should change our method of developing libraries so that we do not introduce breaking changes. Rich also introduces Clojure spec and describes what it can be used for and how it differs from a static type system. To wrap up

Security and Privacy with Susan Landau Apr 19, 2018 4543 Sven Johann talks with Susan Landau about Security and Privacy. After defining those terms they proceed to find out why this important to individuals and societies. They discuss why its the job of intelligence agencies to collect data, but how we can protect us against them. Then Susan discusses the importance of Two-Factor Authentication, how wiretapping and backdoors work these days and how the

Application Security with Peter Chestna Mar 29, 2018 1479 Joy Clark talks with Peter Chestna about application security. The overarching topic of the podcast was what a developer can do in order to make applications more secure. This included talking about some of the most prevalent security vulnerabilities and discussing what application security is and what it entails. Peter also gave some great tips on how to integrate security into the development pr

Blockchain Technology with Andreas M. Antonopoulos (Part 2) Mar 22, 2018 3116 In this second episode of a two-part interview, Stefan Tilkov talks to Bitcoin and cryptocurrency expert Andreas M. Antonopoulos about Bitcoin vs. blockchain tech, the programmable Ethereum system, alternatives to the proof of work approach, and using Bitcoin in hybrid scenarios.

Blockchain Technology with Andreas M. Antonopoulos (Part 1) Mar 1, 2018 3448 In the first episode of a two-part interview, Stefan Tilkov talks to Bitcoin and cryptocurrency expert Andreas M. Antonopoulos about the Bitcoin system’s technical foundation and architecture. Andreas addresses common questions about Bitcoin’s usefulness, scalability, and energy consumption.

Domain-Driven Design with Vaughn Vernon Jan 25, 2018 2852 Joy talks with Vaughn Vernon about Domain-Driven Design. Vaughn shares his journey to DDD and the reasons behind his DDD books. They then go on to discuss strategic design, the broad brush strokes of DDD, what a model actually looks like and how to use bounded contexts to keep a system from becoming a big ball of mud. Vaughn then answers some questions about domain events and event sourcing, and m

aim42 with Gernot Starke Dec 21, 2017 3623 Joy Clark talks with Gernot Starke about aim42, a method for systematically improving software. They discuss in detail the three phases of the process: Analyze, Evaluate, and Improve. Gernot shares his wisdom about how to carry out each phase using stories of his experiences in many different situations. In this way, listeners will get the big picture of how the whole process works: from visualizi

Advanced Scala with Daniel Westheide Nov 30, 2017 3242 Daniel Westheide, author of “The Neophyte’s guide to Scala” and Stefan Tilkov talk about some advanced Scala features and challenges, such as case classes and the problems they can create, algebraic data types, type classes and implicits, using the compiler for Prolog-like type level programming and programming with generic data structures.

ClojureScript with David Nolen Nov 9, 2017 3660 Joy Clark talks with David Nolen about ClojureScript. David introduces the language and discusses the direction that the language is heading in. He talks about how the language is compiled to JavaScript and how it takes advantage of the the Google Closure Compiler. They then talk about designing user interfaces and how functional programming relates to UI design. To wrap up, David mentions differe

Management for Developers with Camille Fournier Oct 19, 2017 4874 Stefan Tilkov talks to Camille Fournier about making a career as a manager in a software development organization. Camille shares her insights about when or why someone would want to become a manager and how to become good at it. Other topics include different levels of management from tech lead to CTO, the role of one-on-one meetings, and how managers influence company culture.

Scala with Sofia Vaughn-Jones Sep 14, 2017 2195 Joy Clark talks with Sofia Vaughn-Jones (née Cole) about Scala. Sofia introduces the language and describes its features. They then discuss what kinds of programs can be written with Scala and the tooling and frameworks that are available. They attempt to define what a monad is and how it can be used. To wrap up, Sofia mentions some great resources for getting started with Scala.

Microservices with Michele Leroux Bustamante Aug 25, 2017 3758 In this episode, Stefan Tilkov talks to Michele Leroux Bustamante about Microservices. Michele shares her perspective on microservices and what she sees as the difference between SOA and microservices: The way they share data. Stefan and Michele also talk about orchestration, getting started with microservices, platforms for microservices as well as a few short other topics.

Clojure with Alex Miller Aug 3, 2017 2276 Joy Clark talks with Alex Miller about Clojure. Topics include the Clojure language and how it compares to other languages as far as features and maintainability are concerned. The benefits of dynamic languages are also discussed, and clojure.spec is introduced as a way to gain the benefits of statically typed languages. Alex also talks about ways to structure Clojure code and gives a great list o

Microservices with Eberhard Wolff Jul 13, 2017 3333 Lucas Dohmen talks with Eberhard Wolff about microservices. Eberhard Wolff is a fellow at innoQ and wrote a book as well as a primer about microservices. He talks about what lead to microservices and the advantages, and disadvantages of as well as the preconditions for the architecture. He then introduces different styles of microservices and how they influence and are influenced by organizational

Rails Girls with Ute Mayer Jun 22, 2017 2689 Eberhard Wolff talks with Ute Mayer about Rails Girls. Topics include how Rails Girls increase diversity in IT and thereby influence the live of the attendees. Rails Girls is a global movement and does workshops to introduce women to programming. Attendees can then join project groups to work on specific projects and apply for the Rails Girls Summer of Code to develop open source projects. The tra

Legacy Software and Immutable Infrastructure with Chad Fowler Jun 1, 2017 3005 Joy Clark talks with Chad Fowler about legacy software and immutable infrastructure. They begin by discussing legacy software and why the description 'legacy' shouldn't actually be a bad thing. Then they contrast how reusable libraries differ from a system of services which is flexible and can change over time. Chad then describes how they developed Wunderlist using a microservices architecture an

Software Architecture with Stefan Tilkov May 11, 2017 3867 Joy Clark talks with Stefan Tilkov about software architecture. After discussing the definition of software architecture, they go on to cover what the role 'Software Architect' actually means and what tools and skills an architect needs to do their job. They also discuss several different architectural styles which can be used and look at the most common styles that are currently employed today. T

OpenTechSchool with Martin Stadler Apr 20, 2017 3691 Eberhard Wolff talks with Martin Stadler about OpenTechSchool, an organization that helps people to learn about programming and software development. Topics include the different types of events and material OpenTechSchool offers and how OpenTechSchool enables a hands-on, empowering, and peer-driven approach. We also discuss the organization, the core values and how OpenTechSchool increases divers

Spring Data with Oliver Gierke Mar 30, 2017 3797 Eberhard Wolff talks with Oliver Gierke about Spring Data. The show starts with an overview of the Java framework Spring and its ecosystem. The focus of the show is Spring Data: A set of frameworks that support many different relational and NoSQL datastores. The show then discusses how Spring Data is developed and released. Another topic is how reactive programming influences persistence and how t

Modern CSS with Jen Simmons Mar 9, 2017 3955 Stefan Tilkov talks to Jen Simmons about CSS, the standard for applying layout rules to HTML pages. Jen talks about the often misunderstood role of CSS in the Web stack, why it matters, and how it has grown ever more powerful over the course of time. Also included: Some discussion about why so many developers don’t like CSS and what to do about it, and new features coming to the CSS standard.

Episodes

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