Provider of ultra high performance building blocks and consultancy services for developing low-latency sustainable software solutions.
Embedded Softwaresoftware engineeringRoboticsAutomotiveInternet of ThingsCloud Computing
Juan Cruz Viotti
Fractional CTO, O'Reilly author, JSON Schema TSC, Open-Source Maintainer
London, United Kingdom (+00:00 UTC) Englishfrom London, United Kingdom
Usually responds in 11 hour
Free
Price per hour
30 min60 min
Time Blocks Available
5.00
12 reviews / 23 sessions
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30
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I had an exceptional mentoring session with Juan! He is not only highly skilled and knowledgeable, but also the nicest mentor I have met on GrowthMentor! Ivan quickly understood my current situation and gave me insightful, actionable, and specific advice. I highly recommend working with him and am excited for continued mentorship. Thank you so much Juan!
Ray Funahashi
Bio
Hey there! I'm an accomplished computer scientist and engineering leader with more than 12 years of experience mostly across early stage startups, and mid-size companies across industries that include APIs, Data, and Internet of Things. Right now I'm CTO at my own startup and do plenty of consultancy on my areas of expertise (high-performance software, data management, and JSON Schema). FOR NON-TECHNICAL FOUNDERS: Are you looking to launch a startup but lack the necessary technical skills in your team? I can play a CTO role, give you tons of advice and architecture help to get you going, and we can check-in every once in a while! I can also help you hire developers and/or outsourcing agencies to do the work. Some facts about me: - I'm the co-author of the O'Reilly book "Unifying Business, Data, and Code: Designing Data Products with JSON Schema", which proposes that data quality is the main bottleneck for effective AI and teaches a practical methodology to think about and fix the data quality problem - At the University of Oxford, I won the 2022 CAR Hoare prize for the best dissertation and accompanying papers in the area of Software Engineering for my research around JSON BinPack (https://jsonbinpack.sourcemeta.com). JSON BinPack made a breakthrough on 40 years of space-efficient telecommunication and binary serialisation technologies, being more space-efficient than 13 other popular technologies in every single tested case (https://arxiv.org/abs/2211.12799). I'm continuing to develop this technology for reducing satellite data transfer costs on Robotics, IoT, and Automotive - I'm a member of the Technical Steering Committee of JSON Schema (https://json-schema.org), the world most popular schema language, which powers virtually every API specification such as OpenAPI, AsyncAPI, RAML, and others. I'm the key provider of commercial JSON Schema tooling at Sourcemeta (https://www.sourcemeta.com) and I also maintain the popular Learn JSON Schema website (https://www.learnjsonschema.com/2020-12/). I'm developing the world's fastest JSON Schema validator, providing nano-second validation for developing low-latency APIs - I'm also a prolific open-source maintainer. I've been involved with projects like Node.js (as an architect behind their Single Executable Applications initiative), I created the popular Etcher IoT image flashing cross-platform desktop application (within the top 700 public repositories on GitHub), and now lead my own open-source foundation (https://www.sourcemeta.com)
Expertise
Building a team
During my career, I have been deeply involved in technical recruitment; building, growing, and retaining engineering teams. Mainly at early stage startups, I have done all of it: job posts, sourcing, interviews, salary negotiations, performance reviews, dismissing engineers, and more.
Data science
I'm the author of an O'Reilly book around data management and data quality: Unifying Business Data and Code (https://www.oreilly.com/library/view/unifying-business-data/9781098144999/), my second upcoming startup (Intelligence.AI) is all about data, and I can help creating a data-first culture, optimising data pipelines, data products, and more.
Personal branding
My credentials, such as being a University of Oxford alumni, and my accomplishments, such as writing an O'Reilly book, publishing a variety of academic papers, developing successful open-source projects, and blogging have been a key part of my success, and happy to share any advice I can give for you to do the same.
Remote work
I'm a huge remote work advocate and I have done it myself for most of my career, including growing a ~5 people early stage startup into a successful >150 people fully remote business. I can help you make sure you do remote work correctly, you hire correctly for it, and avoid all the common pitfalls.
Technology and tools
I have plenty of experience both as an individual contributor and leader in almost every aspect of technology startups, ranging from architecting products and technical recruitment all the way to technical sales, open-source strategies, and day-to-day engineering management. I worked on APIs, data science, embedded devices, operating systems, mobile apps, desktop apps, web apps, and more.
Venting frustration
Working in the tech industry is all but a walk in the park. Work can be extremely complex, people can be difficult, and users can be overly negative and annoying. I went through all of it myself, including a pretty bad burnt out. I can provide my brutally honest advice and help you get back on track!
Toolkit
C++
13 years of experienceI come from a strong embedded and high-performance software background. C++ is my programming language of choice and I have deep expertise on it and its ecosystem.
Zoom
11 years of experienceAs an engineering leader and remote working advocate, Zoom is my video conferencing tool of choice. While the Zoom application is easy to use, conducting productive remote meetings and a healthy remote working culture is hard, but I can help! I have been almost exclusively working remote for the last 10+ years.
Javascript
13 years of experienceJavaScript is ubiquitous on the software industry. I not only have plenty of experience with it, but have been involved with the Node.js project and the OpenJS Foundation, as the key architect behind the Single Executable Application (SEA) initiative (https://nodejs.org/api/single-executable-applications.html) to provide applications embedded into Node.js executables.
Experience
The organisation behind my O'Reilly book (Unifying Business, Data, and Code). We provide consultancy services around data quality, and we are building a product to do technical recruitment in a data-driven manner.
I came in as an external contractor to lead an R&D team to research and experiment with high-performance improvements to the native desktop stack that powers their cross-platform desktop application.
software engineeringEnterprise Software
I was one of the first employees and helped grow the startup into a successful >150 people business. I managed a variety of teams and contributed, to some degree, to almost every part of the company.
Embedded SoftwareEmbedded SystemsInternet of Things
My best written content
- https://www.jviotti.com/2024/01/29/using-xcode-instruments-for-cpp-cpu-profiling.html
- https://www.jviotti.com/2024/01/05/is-objective-c-bool-a-boolean-type-it-depends.html
- https://www.jviotti.com/2023/12/01/understanding-objective-c-by-transpiling-it-to-cpp.html
- https://www.jviotti.com/2023/11/22/spoofing-objective-c-return-values-on-apple-silicon-using-lldb.html
- https://www.jviotti.com/2023/11/20/exploring-macos-private-frameworks.html
- https://www.jviotti.com/2022/05/05/debugging-the-cxx-standard-library-on-macos.html
- https://www.jviotti.com/2021/07/23/a-deep-dive-on-macos-universal-binaries.html
- https://json-schema.org/blog/posts/understanding-lexical-dynamic-scopes
- https://www.jviotti.com/dissertation.pdf
- https://arxiv.org/abs/2201.02089
- https://arxiv.org/abs/2201.03051
- https://arxiv.org/abs/2211.11314
- https://arxiv.org/abs/2211.12799