I’m César Hernández.
Product management and software engineering with Artificial Intelligence
Products and systems that best show the work I do.
01
A wallet for collecting funds and paying education providers across countries and currencies. Agencies could hold balances, reduce FX exposure, and generate additional revenue through markups.
$10M+ annual payments
02
A platform for agencies to issue and manage student insurance policies in minutes, add markups, and collect payments directly from students, with commissions paid monthly.
1,200+ monthly bookings
03
A platform for education agencies to search and quote courses, manage customers and sales, and guide the quotation process from one place. It combined quoting tools, CRM, pricing, and structured data entry.
100+ active agencies
Blog
A place for ideas about software, product, technology, and where they’re heading.
Jev: A Frontier Model for Calibrated Decisions and a Different Way to Think About AI
A closer look at what we actually estimate in software projects.
Using Git Flow to keep branches, releases, and growing software projects under control.
Exploring a more semantic way to reuse styles without filling HTML with arbitrary classes.
An early exploration of what it means to think about CSS in modules.
I’m a product builder who likes complex systems, ambiguous problems, and getting close to the technology. I’ve always been curious across disciplines, which is probably why my path has moved through design, product, software development, and even philosophy and economics.
I started in graphic communication design, where I learned to research and appreciate things like typography, spacing, visual balance and semiotics. From there, around 2010, I gradually moved into software, first building websites with WordPress, and then building complete web applications.
I co-founded Book&Learn in 2015. It became my first opportunity to build a product from scratch: figuring things out with limited resources, learning by doing, and eventually leading technology in a startup. In 2020, Book&Learn merged with Edvisor, giving us an exit and opening the door to a new set of challenges.
At Edvisor, I went much deeper into product, developed more technical rigor, and moved between different roles as the company and the problems changed: from delivery and product management to technical leadership and Product Engineering.
I’ve also kept a long-running interest in philosophy, economics, technology, and sociology, mostly out of curiosity.
Right now, I’m spending a lot of time building with AI and trying to understand what it changes: in software, in product development, and in general in the society. I’m particularly interested in how we can navigate this shift in a way that extends what people can do rather than simply replacing what they do.
I’m also starting a Master’s degree in AI applied to finance to build a stronger technical foundation and take this work further.
Contact
Is there something we could build together? I'm available for full-time opportunities and selected projects.