JetSer. Digital partner for
web design and strategy
Web design at your brand level.
Digital strategy that grows your business.
Construverty
Construction
Barcelona
Single-family home builder in the Barcelona metropolitan area and the Costa Dorada.
Public health
Seki
Berlin
European vaccination outreach platform for families, healthcare professionals, and researchers.
Industrial steel
UNESID
Madrid
Business association representing the interests of the steel sector before national and European institutions.
Industrial paper
Mimcord
Barcelona
Europe’s leading manufacturer of paper yarns and cords, offering sustainable alternatives across multiple sectors.
Science and innovation
Future Insight
Frankfurt
Scientific association connecting researchers, innovators, and Nobel Prize winners to shape a better future.
Analytica Investor
Finance and investment
Vancouver
Research and financial news firm guiding investors in mining, metals, energy, and cryptocurrency markets.
Technology consulting
InfaPartner
Prague
Data and analytics consultancy focused on regulated sectors: banking, insurance, pharma, and telecommunications.
DeepPlants
Climate tech
Rome
Startup born at the Sapienza University of Rome developing deep learning algorithms to fight climate change.
REMAX
Corporate real estate
EU
World-leading real estate network to buy, sell, and grow professionally in the sector.
VariedForms
Luxury interior design
London
Manufacturer of high-end taps and accessories for bathrooms and kitchens, with unique finishes in marble, metal, and noble materials.
Offline marketing
Scamp
Barcelona
Agency specializing in the production and distribution of direct mail marketing campaigns at an international scale.
Industrial gas
Industrial gas
Madrid
Business association defending access to competitive, efficient gas for Spanish industry.
BCN Clinic
Aesthetic medicine
Barcelona
Aesthetic medicine and surgery clinic specializing in facial, body, and hair treatments.
Corporate Energies
Renewable energy
Berlin
International holding company specializing in the planning, financing, and construction of renewable energy plants.
KEA Advisory
Financial consulting
Málaga
Financial consultancy specializing in modelling, analysis, and strategic advisory for businesses and entrepreneurs.
Services
Web design and development
Websites that reflect your brand identity, connect with your audience, and guide visitors to take action. Built to be scalable and easy for your team to manage.
SEO and strategy
Technical optimisation for search engines and AI, content marketing to grow, and mentions to build authority. Increasing organic visibility that’s sustained over time.
Ads campaigns
Google, LinkedIn, and Instagram campaigns focused on attracting qualified leads and optimised to deliver the highest return on investment.
Email marketing and CRM
I work across every funnel audience, from curious visitors to warm leads. I integrate newsletters to nurture your audience and a CRM for sales follow-up.
Why JetSer
Strategy, Web, Marketing. In that order
On the first call, clients usually come in with scattered ideas and the very real fear of burning money without seeing results. They sense there’s something to improve, but they don’t know exactly what. That’s why I always start by auditing what they already have, defining what goals we could achieve and how, and from there we decide on the most efficient roadmap and timelines. Even when things feel urgent, a solid plan is always worth it.
Balancing branding and marketing to maximise results
Pure creatives chase detail and originality, but neglect profitability. Pure marketers control the numbers, but forget to build lasting differentiation. I aim to combine my experience in both worlds to bring the most to every project. No expensive designs that end up with no traffic, and no budgets wasted on visibility that doesn’t sell.
Efficient, scalable systems with no technical lock-in
I don’t build Frankenstein websites with 50 plugins and weekly compatibility issues, or websites built 100% with AI where you depend on the developer and have to pay for every change. I work with WordPress and my own Toolkit, which I improve year after year to guarantee bespoke, scalable websites that clients can manage themselves. Plus, my system effectively covers everything related to performance, on-page SEO, security, and compliance, so both my clients and I can sleep easy.
Let’s talk about your project!
Hi, I’m Sergio! Web designer and digital strategist for companies across Europe. I specialise in the combo many businesses and agencies value: premium design with a growth strategy.
If you think your business needs a visual refresh or an expansion plan, we can talk with no obligation whatsoever. I’ll be happy to help.