Open to new opportunities · Valencia, Spain · Remote
I am Nacho Ruiz, a fullstack Software Engineer based in Valencia, Spain. I take part from functional analysis and architecture through to testing, deployment and product evolution, and I build the process AI agents work within: they propose, I review, and nothing lands without passing the tests.
Fullstack software engineer with 3+ years building products end to end, currently completing a BSc in Software Engineering. I close every feature completely: OpenAPI 3.1 spec, Java 17 / Spring Boot backend and SPA in Vue 3 / Nuxt or Angular.
I own both the feature and the system that sustains it: hexagonal architecture enforced by ArchUnit, testing with coverage gates in CI, zero-warning linting and living documentation. At inSuit I work on an accessibility platform deployed across more than 1,200 public-sector portals, and I took test coverage from zero to the 80% build gate.
Since 2025 I have worked with AI agents daily, and what I bring is not using them: it is the system that governs them. A versioned process shared across projects, context rules specific to each stack validated by scripts with tests, and MCP servers where the agent stops being an assistant and becomes the feature itself.
Working on digital accessibility for the public sector left me with a way of building that I apply to everything: if a site works for someone navigating by keyboard or screen reader, it works for everyone. I do not sell it as an extra, it comes as standard. And as founder and sole developer of Booqo I know what it takes to keep a product running in production, not just to ship it.
A selection of my most recent work. Dynamic, fast and scalable interfaces.
Founder
Multi-tenant management SaaS for clinics and wellness centres: scheduling, client records, services, prepaid packs, VeriFactu-compliant invoicing, stock and analytics. Includes a ~4.5 KB embeddable booking widget each centre pastes into its own site. Monorepo with API, dashboard and widget, live in production as sole developer and founder.
Instant quote generator optimised for the modern web. Focused on local persistence and client-side document generation (in-browser PDF rendering).
URL shortener with usage statistics and custom link management.
Four principles I apply to everything I build, whether it is my own product or a team's.
I close what I start: from the OpenAPI contract to deployment and whatever comes after. I own the feature and the system that sustains it.
Testing with coverage gates, zero-warning linting and architecture enforced by rules rather than promised in a meeting. The point is being able to change code without fear.
I founded, built and keep Booqo running in production with no team behind me: data model, API, dashboard, widget and deployment. I know what it costs to keep something alive, not just to ship it.
Living documentation, code review and mentoring colleagues. Code is read far more often than it is written.
Fast loads and Core Web Vitals in the green. Measured with data, not assumed.
I come from building for the public sector: keyboard, screen reader and contrast are there from the start, not a final pass.
Tidy and documented, so anyone can pick it up tomorrow without doing archaeology.
CI running tests, linting and architecture rules on every push. If it does not pass, it does not land.
I work with AI agents every day, but my contribution is not using them: it is building and maintaining the system that governs them.
A lifecycle of propose, review, apply and archive, shipped as a git submodule and shared across projects, with each one pinning the version it consumes. The system itself is modified by going through its own cycle.
The agent proposes and waits; it never applies its own proposal. One that approves itself is blazing fast right up until the first incident.
Rules and workflows specific to each stack, versioned and validated by scripts with tests. Third-party skills are pinned by hash, like any other dependency.
MCP servers exposing an API as outcome-oriented tools, and automations where the model acts as a structured extractor with a person validating before anything becomes final.
How I have grown professionally building digital products and learning from every challenge.
Feb 2026 - Present
Booqo
Personal project · booqo.es
Multi-tenant management SaaS for clinics and wellness centres: scheduling, client records, services, prepaid packs, VeriFactu-compliant invoicing, stock and analytics. Monorepo with API, web dashboard and embeddable booking widget, live in production.
Mar 2025 - Present
inSuit
Digital accessibility · Valencia
Web accessibility platform (automatic remediation plus a navigation assistant driven by voice, keyboard and switches) deployed on more than 1,200 portals of public administrations and large organisations subject to RD 1112/2018 and the European Accessibility Act, reaching 60 M+ users a year. I work across two products and six repositories.
Jan 2025 - Mar 2025
The Bridge
Tech bootcamp · Valencia
Technical mentoring in a fullstack bootcamp aimed at people with disabilities (ONCE), teaching HTML, CSS, JavaScript and React with Hooks from scratch. Troubleshooting support and project reviews, adapting explanations to very different learning paces and accessibility needs.
May 2023 - Sep 2024
Crocantickets
Ticketing SaaS
Fullstack development on a ticket-selling SaaS platform, in a team following Agile methodology: new frontend and backend features, interface modernisation and performance optimisation.
My academic foundation and the continuous learning that complements my hands-on experience.
University degree
UOC · ~60% of credits completed
2021 - Present
Higher VET diploma
IES Camp de Morvedre · Completed
2024 - 2026
Bootcamp
The Bridge
2023
Spanish / Valencian
Native
English
B2 Upper Intermediate
Udemy
Udemy
Udemy
Open to software engineering roles and to occasional collaborations. Tell me what you have in mind and I will get back to you within 24 hours.
Phone
Location
Valencia, Spain · Remote
Response time
Under 24 working hours