Andoni Vianez Ulloa

Yes. My availability depends on the project and is assessed at kick-off, compatible with my current employment at Orbis Tecnología Eléctrica. I prefer projects with a defined duration or monthly hourly retainer.

I work on fixed projects or hourly retainers, with a customized quote after an initial scope analysis. To inquire about specific rates, email me at [email protected] or through my Malt profile.

Yes, remote is my preferred mode. I can also work hybrid in the Basque Country (Gipuzkoa) for occasional meetings or project kick-offs.

Yes, I invoice as self-employed (Andoni Vianez Ulloa, Tax ID 72523047K). I issue invoices in compliance with Spanish regulations.

Full stack web development (React, Next.js, Node.js, Symfony), mobile apps with React Native, applied AI integration (RAG, assistants), DevOps/infrastructure (AWS, Docker, CI/CD) and technical consulting. I mainly work with SMEs and freelancers in the Basque Country and remotely across Spain.

Yes, I sign NDAs and confidentiality agreements without issue when the project requires it.

Yes. I always formalize work with a service provision contract defining scope, deadlines, deliverables and payment terms.

Yes, intellectual property rights for custom-developed code are agreed in the contract, typically transferred to the client upon payment.

Yes. I can take on evolutionary and corrective maintenance after delivery, either with a monthly hourly retainer or ad-hoc agreement as needed.

Yes, a monthly hourly retainer is one of my preferred modes for projects with continuous evolution or recurring support.

Yes. I have experience taking over legacy or half-finished projects: I analyze existing code, identify technical debt and propose a realistic continuation plan.

It depends on my current workload at Orbis and other freelance commitments. We discuss it on first contact and I give you a realistic date at kick-off.

Yes. I prefer dealing directly with whoever needs the project: clearer communication, fewer layers and better alignment with the business goal.

I'm not looking to change jobs. I'm happy at Orbis and combine my work with select freelance projects.

Because I cover development and infrastructure in one person, I have 15+ years across very different sectors (energy, healthcare, IoT, industry, education), I master mobile with native modules and can go from firmware to cloud. Plus, you talk directly to the person who codes.

I'm not a graphic designer. I implement interfaces from existing designs (Figma, etc.) or with component libraries like shadcn/ui. If you need visual identity or UI/UX from scratch, I recommend collaborating with a designer.

That's not my specialty. My usual backend is Node.js, PHP/Symfony and Python/Django. For Java/.NET enterprise ecosystems I recommend a specialized profile.

No. My main frontend stack is React, Next.js and Angular. If your project is already in Vue or Svelte, I can guide you, but that's not where I add the most value.

I don't train models from scratch or do pure data science. I do integrate applied AI: RAG, assistants, browser-local models (WebLLM, Chrome Prompt API) and LLMs via AI SDK.

Spanish (native), Basque (B2), English (B1/B2 basic professional) and Portuguese (intermediate). I can communicate with clients in Spanish, Basque and English.

I built a portfolio with 100% local AI (BigIA Master's thesis): lexical RAG over structured data, multi-provider abstraction (Chrome Prompt API, WebLLM, extractive fallback), experimental metrics and latency evaluation. I also have training in cybersecurity and web application auditing.

By email ([email protected]), LinkedIn (linkedin.com/in/andoni-vianez) or Malt (malt.es/profile/andonivianez). I respond in Spanish, Basque or English.

Yes. I've been a freelance ICT teacher for 15+ years (Windows, Office, hardware, web basics) and taught professional training at INKORFORMACION on cloud APIs.

The Zetup app at BQ: React Native with native modules in Java, Kotlin, Swift and Objective-C for device hardware access, plus IoT communication with BLE, MQTT and REST, CI with Jenkins and publication on App Store and Google Play.

I've used React Native since BQ (2018-2019) with native modules, through Onkologikoa (Ionic-React), TuMaker (Voladd), ConnectHealth (healthcare apps) and Orbis (iOS/Android apps in production).

Yes. I developed C++/Qt firmware at Wattiocorp (IoT home automation with MQTT) and TuMaker (3D printers), deployed on production devices with ARM cross-compiling.

Yes. I developed clinical apps at Fundación Onkologikoa (React/TypeScript, Symfony, Docker, hospital environment) and cross-platform health apps at ConnectHealth with React Native.

Yes. I currently develop the web and mobile stack for energy management products at Orbis Tecnología Eléctrica, with React, Angular, Node.js and React Native in continuous production.

Yes. I've combined development with sysadmin for 15+ years: Docker, CI/CD (GitHub Actions, Jenkins), AWS, Proxmox, Linux/Windows Server, pfSense and hardening. I can cover infra and code in one profile.

Yes. I appeared on episode #17 of Opground's Discovery Tech Stories (2021), where I talked about my career, the sysadmin-to-developer transition, my T-shaped profile and IT teaching. You can watch it in the Interviews section of my About page or on YouTube.

I live in Astigarraga, Gipuzkoa (Basque Country). I mainly work remotely and can travel within Gipuzkoa for occasional meetings.

Yes. I have musical training in txistu and percussion (Conservatory, level 2). It's a hobby that complements my technical profile.

In my free time I experiment with Arduino and Raspberry Pi, play txistu and percussion, and keep learning about electronics and computing on my own.

It's the Master's Degree in Development with Artificial Intelligence from Universidad Isabel I (2026). My thesis was this portfolio with 100% local AI: RAG, multi-provider and experimental metrics.

Yes. My profile is github.com/andonivianez with IoT, API, mobile app and development tool projects. Some professional projects are private due to client agreements.

It's a lexical RAG over local JSON data: I index my CV into chunks, retrieve the most relevant ones by token and synonym scoring, and pass them as context to local models (Chrome Prompt API, WebLLM) or an extractive fallback. No paid APIs or sending data to external servers.

I don't store the literal text of your questions. Processing is local in your browser. I only record anonymous aggregated metrics (topic, language, provider) if you accept analytics. More details in the privacy policy.

Yes. I was CTO at Titaneumáticos (2018-2023) and CTO at startup WeGetIt (2019), plus dual development and technical leadership roles.

Energy (Orbis), healthcare (Onkologikoa, ConnectHealth), IoT/home automation (Wattiocorp), consumer electronics (BQ), 3D printing (TuMaker), industry (Titaneumáticos), education, banking (Bankoa), retail/ecommerce and professional services as a freelancer.