Juan Cruz Viotti
Hey there! I'm the founder of Sourcemeta, O'Reilly author, TSC member of the JSON Schema organization, and award-winning University of Oxford alumnus
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Unifying Business, Data, and Code
If you enjoy my content, check out my book (Unifying Business, Data, and Code) that covers, for the first time in print, topics like:
- Writing your own JSON Schema vocabularies
- Understanding JSON Schema annotations
- Hosting your own JSON Schema registries
More importantly, our book teaches you a methodology for effective data management that will transform how you think about data.
Read it online on O'Reilly, or buy it from Amazon and eBooks.com.
Can my expertise help? I’m available for consulting on topics including C++, CMake, macOS, JSON Schema, software architecture, and data. Don’t hesitate in reaching out to discuss further.
Articles
- 2025 Studying C++ generated assembly using Xcode Instruments
- 2024 Running the Intel VTune Profiler on Fedora
- 2024 Debugging MSVC C++ crashes from the terminal using CDB
- 2024 Using Xcode Instruments for C++ CPU profiling
- 2024 Is
Objective-C
BOOLa boolean type? It depends - 2023 Understanding Objective-C by transpiling it to C++
- 2023 Spoofing Objective-C return values on Apple Silicon using LLDB
- 2023 Exploring macOS private frameworks
- 2022 Building Objective-C iOS apps with CMake
- 2022 Writing Objective-C iOS apps without Storyboards
- 2022 Launching macOS applications from the command-line
- 2022 Performance testing through proportional traces
- 2022 Debugging Electron.js native crashes on GNU/Linux
- 2022 Debugging the C++ standard library on macOS
- 2022 Attaching LLDB to production Electron.js builds on macOS
- 2022 Emitting Signposts to Instruments on macOS using C++
- 2021 Debugging Electron.js native crashes on macOS
- 2021 Employers should not own open-source contributions
- 2021 A deep dive on macOS universal binaries
- 2021 Speeding up Windows Electron.js builds with SCCACHE
- 2021 Building Electron.js on Windows using the Visual Studio Build Tools
- 2018 Evolutive Integration Testing of HTTP APIs with OpenAPI
- 2018 Easily switch between many NPM accounts
- 2017 An introduction to Ada’s simple numeric types
- 2017 An overview of arrays in Ada 2012
- 2016 How to manually package an Electron app for Windows
- 2016 How to code-sign OS X Electron apps in Travis CI
- 2016 Fixing a baffling issue when running Electron as root in GNU/Linux
- 2016 Debugging Electron to run shell scripts in a packaged application
External
- 2025 Maintaine.rs, Unveiling the Open Source heroes that power our digital infrastructure: Juan Cruz Viotti
- 2025 Sourcemeta Revamps JSON Schema Management
- 2025 Open Source Initiative Maintainer Story: Juan Cruz Viotti
- 2024 Understanding JSON Schema Lexical and Dynamic Scopes
- 2023 How Postman uses JSON Schema
- 2022 How the W3C Web of Things brings JSON Schema to the Internet of Things
- 2022 An Overview of the Current State of Node.js Single Executable Applications
Research
- 2025 (Paper) Blaze: Compiling JSON Schema for 10x Faster Validation
- 2022 (Dissertation) JSON BinPack: A
space-efficient schema-driven and schema-less binary serialization
specification based on JSON Schema
- Awarded two 2022 CAR Hoare prizes for best performance
- 2022 (Paper) Benchmarking JSON BinPack
- 2022 (Paper) JSON Stats Analyzer
- 2022 (Paper) A Benchmark of JSON-compatible Binary Serialization Specifications
- 2022 (Paper) A Survey of JSON-compatible Binary Serialization Specifications
Media
- 2025 (Talk) Tyk LEAP 2.0: API governance starts with JSON schema here’s why!
- 2025 (Interview) API Evangelist Conversation With Juan Cruz Viotti of Sourcemeta About Schema Registries
- 2025 (Podcast) Voxgig Fireside with Juan Cruz Viotti
- 2024 (Talk) JSON Schema Conference 2024 - Applying software engineering practices to JSON Schemas
- 2024 (Talk) How to Crush Node.js Performance by Orders of Magnitude (Slides)
- 2024 (Webinar) Demystifying Data Products
- 2024 (Live Stream) DM Radio - All Together Now - Unified Analytics
- 2023 (Live Stream) Creativity & problem solving with AlphaZero, Tom Zahavy
- 2023 (Live Stream) Venturing from Spreadsheets to Startups: The journey of venture capitalist Heidi Roizen
- 2023 (Live Stream) On collective intelligence, academic publishing, and programmable biology
- 2023 (Live Stream) An interview with Fanny Sie about open science networks
- 2023 (Live Stream) Going beyond JavaScript and Actor-Based Programming: an Interview with Douglas Crockford
- 2022 (Presentation) A Day in the Life of a Software Engineer
- 2022 (Discussion) Node.js SEA at OpenJS Foundation Collaborator Summit
- 2022 (Live Stream) How Postman Engineering is using Electron
- 2017 (Course) Building Electron Applications
- 2017 (Course) Distributing Electron Applications
Notes
This is a list of notes I took while studying various topics. Hopefully they’re also useful to other people.
- Algebra
- Automata Theory
- Boolean Algebra
- Communicating Sequential Processes
- Functions
- Graph Theory
- Linear Algebra
- Logic
- Matrices
- Order Theory
- Polynomials
- Relational Model
- Sequences
- Set Theory
- Z Notation
Programming related: