Fast, elegant websites
Conversion-focused UX, technical SEO, green Core Web Vitals and accessibility. CRM and analytics integration.
Websites • Apps • E-commerce • SEO & AIO
Digital experiences that convert and inspire trust.
I build fast, secure and finely optimised websites and apps — from strategy to code. Focused on real results: more traffic, more leads, more sales.
+120Projects delivered
~1.2sAverage load time
99/100Average Lighthouse score
Brands and projects that trusted my work
Services
What I do for you
End-to-end strategy, design and engineering so your business grows without friction.
Custom apps (iOS, Android, Web)
Native apps and PWAs with back-office, notifications, payments and robust APIs. Like TakeGo, DSTBarth and Andreia.
Online stores that sell
Shopify and WooCommerce with local payments, Apple/Google Pay, automation and abandoned-cart recovery.
Visibility on Google and AI
Technical SEO, structured data (Schema.org) and AI optimisation (AIO/GEO) so you get cited by ChatGPT, Gemini and Perplexity.
Enterprise-grade security
HTTPS, security headers, protection against XSS/CSRF/SQLi, encrypted data and GDPR compliance on every project.
Speed and ongoing support
Image optimisation, caching, CDN and post-launch monitoring to keep everything fast and online.
Work
Selected work
A few websites and apps I designed, built and maintain.
Website
Braval Braval
Modern, fast corporate website for the Braval brand, focused on service presentation and lead generation.
braval.pt
Website
Artemental
Creative digital presence for Artemental, with distinctive design, optimised performance and SEO from the ground up.
artemental.pt
Website
Vitta Vitta
Web platform and email communication for Vitta — a clean, secure and conversion-driven experience.
vitta.ltd
Online store
Maballa Maballa
Online store (Shopify) for the fashion brand Maballa — catalogue, payments, automation and a conversion-optimised shopping experience.
maballa.com
Application
TakeGo TakeGo
Full TakeGo application with back-office, real-time metrics page, order management and payments.
Application
DSTBarth
DSTBarth app with custom workflows, a secure database and a management panel for the team.
Application
Andreia
Andreia app — a bespoke mobile solution with an intuitive experience and scalable architecture.
★★★★★
What clients say
“O Denis percebeu o nosso negócio e entregou um site rápido e que realmente gera contactos. Profissional do início ao fim.”
“A nossa loja online ficou impecável e segura. As vendas e a recuperação de carrinhos melhoraram logo nas primeiras semanas.”
“Desenvolveu-nos uma aplicação à medida com painel de gestão. Comunicação clara, prazos cumpridos e suporte contínuo.”
Process
Simple process, consistent results
Discovery
A quick call to understand goals, deadlines and success metrics.
A quick call to understand goals, deadlines and success metrics.
Strategy & Design
Information architecture, wireframes, minimalist UI and an SEO/AIO plan.
Information architecture, wireframes, minimalist UI and an SEO/AIO plan.
Secure Development
Clean, tested and secure code, integrating the tools you already use.
Clean, tested and secure code, integrating the tools you already use.
Launch & Optimisation
Testing, metrics, continuous improvement and post-launch monitoring.
Testing, metrics, continuous improvement and post-launch monitoring.
Performance guarantee
Pages that open in seconds, high Lighthouse scores and constant monitoring.
- Load times < 2s (average)
- On-page SEO and structured data
- Integrations: GA4, Pixels, Search Console
🛡️ Security
Maximum security, by default
On every project I apply industry-leading security practices — it is not an add-on, it is the starting point.
Full encryption (HTTPS/TLS)
All traffic encrypted with always-current certificates.
OWASP Top 10 protection
Defence against XSS, CSRF, SQL injection and other common threats.
Protected data and passwords
Strong hashing, prepared statements and least-privilege principle.
GDPR compliance
Consent, data minimisation and the right to be forgotten.
Hardened headers & CSP
CSP, HSTS and security headers on every page.
Monitoring & backups
Automatic backups and continuous monitoring.
Ready to elevate your digital presence?
Send me your idea and I’ll craft a tailored proposal.
FAQ
Frequently asked questions
How much does a website or app cost?
It depends on scope. A professional website starts around €1,200 and custom apps are quoted individually. I always send a tailored proposal after a short conversation.
How long does a project take?
A landing page can be ready in 1-2 weeks; a full website in 3-4 weeks; apps depend on complexity. I set clear deadlines up front.
Are the sites secure and GDPR compliant?
Yes. I apply HTTPS, OWASP protection, encrypted data, backups and GDPR compliance on every project, by default.
Do you do SEO and AI optimisation (AIO)?
Yes. Every project includes technical SEO, structured data and optimisation for AI engines (ChatGPT, Gemini, Perplexity) to maximise your visibility.
⚡ Instant estimate
How much does your project cost?
Answer 4 questions and get an investment and timeline estimate — no strings attached.
Your project estimate
Estimated investment—
Estimated timeline—
Indicative figures. I finalise the proposal after a short conversation.
Contact
Let’s talk about your project
I reply within the same business day. No strings attached.