Backend engineering, with the parts that actually run in production.
Thirteen years across freelance, consulting, and product teams. I work mostly on .NET, mostly on the seams: auth, observability, the line between a monolith and the services that should have been carved out two years ago.
Short version.
I grew up reading manuals before I read books, and I never quite stopped. I studied software engineering at the University of Seville, took my first paid contract in 2013, and have been writing backend code in some form ever since.
The work I'm proudest of is unglamorous: a billing extraction that paid for itself the next quarter, an OIDC migration that nobody noticed, a tracing rollout that cut a four-second tail latency to under five hundred milliseconds. The interesting part of architecture is operational maturity, not the diagram.
I write at kike.dev/blog when a thing is worth a longer take. The blog is half-automated by a Claude pipeline I run on this site — see /projects.
Where the time went.
Five roles, mostly .NET, mostly remote since 2020.
Principal-level .NET Engineer
Lead the design and delivery of cloud and service-oriented systems for clients in regulated industries. Mentor engineers across teams; own architecture decisions, cross-cutting auth, and observability foundations.
Senior Software Engineer
Migrated a ten-year-old ASP.NET monolith toward a service-oriented platform: extracted billing and catalog as separate bounded contexts, introduced distributed tracing as a first-class concern, and rolled out Duende-based auth across the estate.
Software Engineer
Consulted on .NET modernisation projects across multiple sectors. Shipped greenfield CQRS systems, mentored junior engineers, and contributed to internal architecture playbooks.
Software Engineer
Built customer-facing real-estate software end-to-end: domain modelling, REST APIs, and the SQL backing store. First serious exposure to DDD and bounded-context thinking.
Software Consultant (Freelance)
Delivered small-business backends, internal tools, and integrations. Learned to scope, estimate, and ship in front of a customer who pays the invoice.
The full grid.
Education, languages, organizations.
University of Seville · B.Sc. Software Engineering · 2005 — 2012.
Final-year project on distributed event processing — the first time I wrote anything that ran on more than one machine.
LAUDE El Altillo School · High School Diploma, Physical Sciences · 2003 — 2005.
Elemental and 2nd Medium Degree in Conservatory (Piano) alongside the diploma.
BeYourSoft S.L. — independent consulting vehicle for small B2B engagements.