AI Full-Stack Engineer
Building Secure, Scalable Products
I am Manuel Alejandro Madero, Founder and CTO of Arkthemis.com, a privacy-first AI platform featuring end-to-end encrypted AI agents.
I design and build AI-powered applications, scalable cloud infrastructures, and modern web platforms using JavaScript, TypeScript, Python, React, Next.js, Node.js, AWS, and Large Language Model integrations — with a proven track record leading products from concept to production.
Based in
Granada, Spain
The engineer behind the architecture
I'm Manuel Alejandro Madero, an AI Full-Stack Engineer and founder working at the intersection of product, infrastructure, and applied AI. As Founder & CTO of Arkthemis.com, I design privacy-first agent platforms end-to-end — architecture, backend, frontend, and everything that gets them safely in front of real users.
Before founding Arkthemis.com, I built and maintained production web platforms for clients, and spent time evaluating Large Language Model outputs for accuracy and reasoning quality — work that shapes how I think about reliability in the AI systems I build today. I care about software that's secure by default, fast to iterate on, and genuinely useful to the people who depend on it.
How i can help you grow
I connect the dots between your business goals and the technical heavy lifting, using enterprise-grade tech to build solutions that make sense for you.
Scalable Product Engineering
I build custom web apps that grow right alongside you. I make sure your product is fast, secure, and easy to maintain, saving you from future tech headaches and expensive rewrites.
Robust Cloud Architecture
You should be able to sleep well knowing your app won't crash. I design scalable, privacy-first cloud setups (AWS) to keep your business online 24/7 and your users' data completely safe.
Next-Gen AI Integration
AI doesn't have to be intimidating. I'll help you integrate custom LLMs, RAG, and smart agents to automate your most tedious tasks. Imagine getting your time back so you can focus on wowing your clients.
Technical Stack
Languages
Frameworks & Runtime
Cloud & Data
Cloud & Data
AI & ML
AI & ML
Professional Experience
CEO & CTO
Arkthemis.comLed the end-to-end architecture, development, and deployment of a privacy-first AI platform featuring six specialized AI agents with end-to-end encryption, reducing time-to-market from concept to production in under 6 months. Built secure authentication and integrated multiple LLM providers using scalable AWS & Vercel infrastructure.
CTO
Tilden.appLed the end-to-end architecture, development, and deployment of a privacy-first AI platform featuring six specialized AI agents with end-to-end encryption, reducing time-to-market from concept to production in under 6 months. Built secure authentication and integrated multiple LLM providers using scalable AWS & Vercel infrastructure.
Web Developer
Balinot Tech ConsultingDesigned and developed responsive websites and e-commerce solutions using WordPress and WooCommerce, with custom landing pages built in HTML, CSS, JavaScript, and PHP. Managed website migrations, VPS deployments, and DNS configurations, implementing security hardening, monitoring, backups, and performance optimization.
AI Software Developer
Scale.ai / Outlier.aiPerformed technical audits and evaluations of Large Language Model responses. Validated AI outputs for accuracy, reasoning quality, and alignment with complex user requirements to improve model quality.
Featured Projects
Current production projects.
Arkthemis.com
Privacy-first AI platform featuring six specialized AI agents with end-to-end encryption, secure cloud infrastructure, and multi-LLM integrations.
Tilden.app
Developed an AI-powered travel assistant capable of understanding user preferences and generating personalized travel recommendations and itineraries.
Portfolio Projects
Portfolio proyects version DEMO.
Bskyt.store
WordPress-based website with WooCommerce, plus API integrations (Stripe payments) and plugins
Cubic Tech Consulting
A landing page-style website simulating a hypothetical web technology consulting firm, with integrated plugins and cookies.
I design fast websites that rank on Google and generate sales
I design WordPress websites that work 24/7 for you. Fast, SEO-optimized, and built to multiply your online sales.
100% custom web design, no templates
No generic, soulless websites. Every site I design is built from scratch, tailored to your brand, goals, and buyer persona. Your website will be unique.
Guaranteed speed and performance
A slow website is a website that loses sales. That's why I take care of every technical detail so your site loads in seconds and works like a Swiss watch.
Priority on SEO rankings
I apply SEO principles from the start and design every URL on your site with a commercial strategy, so your website doesn't just look good... it ranks on Google and sells!
Personalized attention. No middlemen
By working directly with me, you get 1-on-1 communication, total clarity, and real commitment. I treat your project as if it were my own website.
Everything you need in a single professional web design service
I don't just design WordPress websites: I deliver complete, strategic, and optimized solutions so your business grows from day one.
100% custom WordPress design...
Your website will be unique...
SEO and speed to stand out on Google
From day one...
Responsive, legal, and 100% secure
Your website will adapt...
Maintenance, guarantee, and real support
I include one month...
What it's like to hire my expert WordPress web design service
No complications or weird stuff. This is the clear process we will follow to have your website ready and working in 21 days.
Request your custom quote
You fill out a short form...
I design the homepage of your website
We'll start with the homepage...
Development of the remaining pages
With the main design approved...
I deliver your website with a guarantee
We review the final result...
Trusted by businesses to drive digital growth
Marcus Vance
Local Guide
"Our old site was bleeding sales because of poor load speeds. Manuel re-architected everything on Next.js. Page speeds skyrocketed, and our Google rankings jumped to the first page within a month. Incredible attention to technical details."
Elena Rostova
CEO, Bloom Media
"Working 1-on-1 without middlemen made a massive difference. Manuel actually treated our custom WordPress design as if it were his own project. Clear timeline, delivered exactly in 21 days as promised, and highly secure."
David K.
Local Business
"Most developers just build what you ask without thinking. Manuel challenged our strategy and optimized our conversion pathing. The custom theme is incredibly fast and intuitive. Our conversion rate increased by 25%."
Sarah Jenkins
CTO, TechFlow
"We needed a seamless migration from a messy legacy system to a headless WordPress setup. Manuel handled the transition flawlessly with zero downtime. The new architecture is bulletproof and our editorial team loves the custom backend."
James O'Connor
E-commerce Director
"Mobile conversions were our biggest bottleneck. Manuel didn't just rebuild the site; he crafted a mobile-first experience that feels like a native app. Core web vitals are perfect, and our bounce rate dropped by 40%."
Aisha Patel
Startup Founder
"Finding a developer who understands both clean code and business scaling is rare. Manuel delivered a blazing-fast site that easily handled our recent traffic spike during product launch. Worth every penny for the peace of mind."
Work with a freelance WordPress expert...
It's not just about having an online presence...
Request a QuoteFrequently Asked Questions
What if I don't like the result? ▼
Yes, you can request...
Do I have to pay everything upfront? ▼
It depends on the project amount...
What real guarantees do I have? ▼
Once the website is delivered...
Why does it cost what it costs when there are websites for €300? ▼
Because what I offer has nothing to do with that type of professional...
Will the domain and hosting be under my name? ▼
Always. This is something I am inflexible about...
Ready to build something amazing?
Let's discuss how custom AI tools and modern web architecture can elevate your product.
Contact Mealexandermarvfr@gmail.com | +34 644 457 802 | Granada, Spain