Product Design & Strategy
Hi! I’m Guillem.
Product Designer with 15+ of experience.
FinTech. TravelTech. Gaming.
Tech. Startups. Agencies.
Overview
01
Solution-Oriented
I’m highly pragmatic, with a creative and lean approach to design, and a consistent drive for quality. A big part of my role is to bridge the gap between user needs, technical constraints, and business goals.
02
Full-Stack
My expertise spans the entire design process, from research and strategy to UX/UI design and implementation, complemented by front-end experience and a strong product mindset.
03
Design Leadership
I thrive in early-stage environments, having held leadership roles as Lead, Principal, and Founding Product Designer, where I've driven design strategy and execution from the ground up.
04
Lean Design
I feel comfortable with ambiguity, adapting quickly to change, uncertainty, and fast-paced environments. I embrace failure as part of the learning process, combining experience with data-driven validation.
05
Team-Player
I’m a hands-on, autonomous, and proactive designer who enjoys learning from others and mentoring in return. A team player who values cross-functional collaboration as key to success.
06
Product Management
My experience as a startup founder, solo game developer (that's another story), and as an interim product manager has helped me develop solid product and project management skills.
Products
Launched
Enhanced
Co-Founded
Years
Companies
Sectors
Portfolio
Case Studies
This case study explores my journey as Sileon’s founding product designer, covering the end-to-end process of developing a cloud-based SaaS platform (MVP)—from inception to launch.
This case study reflects on the design journey and the decisions made designing a singular navigation system, highlighting the nuances of developing solutions for a hybrid product that merges digital and real-world environments.
Experience
Today
Founding Product Designer | Principal Product Designer
Sileon (Paynova) | Stockholm, Sweden
Overview
Sileon is a Stockholm-based fintech company specializing in BNPL (Buy Now Pay Later) solutions for banks, card issuers, fintechs, and merchants. Formerly known as Paynova, Sileon has developed a high-capacity, API-based BNPL SaaS solution that caters to both B2C and B2B markets. This scalable platform enables clients to serve their end-users without substantial investments in technology or expertise and operates across multiple markets, currencies, and payment methods, including credit and debit cards.
My Journey at Sileon
- Led Product Design from the ground up, establishing a design culture and laying the foundation for a growing design team while collaborating with the CPO to identify current and future needs, define role requirements, select candidates, conduct technical interviews, and provide ongoing mentorship.
- Directed Product Design strategy and execution during a major pivot from consumer-focused BNPL solutions to a SaaS-based BNPL platform, driving the process from conception to MVP, launch, and post-launch iterations.
- Contributed to the development and enhancement of a diverse range of products and projects, including fully responsive end-consumer applications, B2B SaaS solutions, and internal tools, collaborating closely with Product Designers, the CPO, Head of Product, PMs, POs, Tech teams (lead architects, front-end & back-end engineers), and Customer Support. Additionally, provided support to Sales and Marketing teams in product marketing efforts.
- Deployed and maintained design systems supporting Sileon’s core business areas and product portfolios, fostering consistency, efficiency, scalability, reusability, and the application of best practices and user-centric solutions, in close collaboration with the front-end team.Took on the role of interim Product Manager for several projects to support the Product team during an internal restructuring and transition period.
2021
Interactive Storytelling
Uppsala Universitet | Gotland, Sweden
Game Design in Practice
Uppsala Universitet | Gotland, Sweden
2020
Lead Product Designer
Strands Labs | Barcelona, Spain
Overview
Founded in Corvallis, Oregon, in 2004 and headquartered in Barcelona, Strands is a fintech company specializing in digital banking solutions. With over 20 years of expertise in Open Finance, Machine Learning, and AI, Strands is dedicated to enhancing customer engagement for financial institutions. As part of the CRIF group, Strands supports the financial wellness of over 70 million users and serves as a trusted partner to more than 700 banks worldwide.
My Journey at Strands
- Led product design with increasing autonomy, developing Strands’ first design system for both web and mobile platforms, and taking on key responsibilities within the company’s most strategic projects and products.
- Contributed to establishing a design culture within the organization by promoting best practices and a user-centric design approach.
- Played a key role in a two-year collaboration with Mastercard, designing solutions to integrate their services into Strands’ products. This collaboration ultimately evolved into a formal partnership between Strands and Mastercard.
- Secured second place in its category at the ‘Build an Open Bank Challenge,’ the first design hackathon of its kind organized by Lloyd’s in London in 2017. The event featured participation from 14 partnering organizations, ranging from major corporations to startups.
- Collaborated with a Business Insider analyst to explore how user-centered product design can help banks strengthen customer relationships.
Lead UI Designer
Wanup (Catalonia Hotels) | Barcelona, Spain
Overview
Wanup was a hotel booking platform with capabilities similar to OTAs like Booking.com, Agoda, and Airbnb, designed to bring together selected independent hotels and hotel chains under a single loyalty program for affiliates. As a full-time consultant and lead UI designer, I joined Wanup’s team in its early development stages. Working closely with the UX lead, we took over the initial concepts and designed the entire prototype for the final commercial product. Wanup, an award-winning startup and spinoff from Hotels Catalonia—a top-10 Spanish hotel chain—eventually pivoted and fully merged into the Hotels Catalonia Loyalty Program.
My Journey at Wanup
- Designed the full prototype for Wanup’s hotel booking platform and back-office, working closely with the UX Lead and Front-end team.
Lean Startup Creation
Universitat Politècnica de Catalunya | Barcelona, Spain
2016
Webmaster | Graphic Designer
ADP | Barcelona, Spain
Overview
ADP is a leading global provider of human capital management (HCM) solutions, offering a comprehensive range of services including payroll, talent management, HR, and benefits administration. With innovative technology and data-driven insights, ADP helps organizations streamline operations, improve efficiency, and manage their workforce effectively.
My Journey at ADP
- Managed ADP Streamline’s Client and Partner portals, providing support to ADP Streamline users worldwide.
- Regularly designed and implemented HTML email templates.
- Assisted the Communications and Marketing teams with various graphic design tasks.
2011
Web & Interactive Media Designer | Front-end Developer | Webmaster
Vyrtucom | Barcelona, Spain
Overview
Vyrtucom is a digital agency and online communication specialist, focused on digital strategy, graphic design, corporate identity, and audiovisual production, with years of experience providing services to top brands and companies.
My Journey at Vyrtucom
- Designed and co-developed landing pages for multiple clients using HTML and CSS.
- Created standalone touchscreen applications for Piaggio Group showrooms in Italy using Flash and ActionScript.
- Managed and maintained the international websites for Aprilia, Vespa, Moto-Guzzi, Derbi, and Piaggio.
- Designed social media pages for Aprilia and Vespa.
2010
Junior Web Designer & Developer | Junior Graphic Designer
AMG | Manchester, UK
Overview
Creative Media Mavericks is a digital agency based in central Manchester, established in 1998. The agency provides a variety of services, including graphic design, high-quality printing, e-commerce, and responsive web development.
My Journey at Creative Media Mavericks (Former AMG)
- Designed and developed websites using HTML, CSS, Flash, and ActionScript, managing tight budgets and time constraints, while improving speed and efficiency to ensure on-time delivery.
- Worked independently with clients on numerous graphic design assignments, including vouchers, restaurant menus, flyers, logos, and banner signs, in a fast-paced agency environment with tight budgets and time constraints.
- Gained experience and took on more responsibilities, including leading art direction and design for key client projects.
- Balanced the job with my final year at university and another role as a resident DJ for Erasmus and international community events across the UK on a weekly basis.
Bachelor’s Degree in Design | BA (Hons) Design Futures
The University of Salford | Manchester, UK
2008
Higher National Diploma in Interactive Media | HND Interactive Media Design
City College Manchester | Manchester, UK
2006
Gigs
UX Designer
Genioo | Barcelona, Spain
Product Designer | Visual Designer
Savety | Barcelona, Spain
UI Designer
Subasta de Ocio | Barcelona, Spain
Founding Product Designer
Homestay Mountain | Zaragoza, Spain
Side Projects
Solo Developer
The Campsite (Indie Game) | Stockholm, Sweden
Co-Founder
Rid’m | Barcelona, Spain
Lead Co-Founder
Appventure Games | Barcelona, Spain
Skills
“He takes on challenges with his solution-oriented mindset, which always lead to great result. On top of that, he is an excellent team member and appreciated colleague.”
Bahareh Zand, CPO at Sileon
“Guillem is an excellent partner to work with. He is very reliable, always delivers with high quality and on time.”
Therese Brede, Communications Manager at ADP
“Very knowledgable and highly skilled professional. Thank you for teaching me a great deal about UI/UX.”
Miroslav M. (Front-end Engineer), Team Lead at Strands
“There are very strong UX and UI design profiles, but for an MVP context, we should have included a User Research profile early on, which we did months later with Vaida and Guillem’s team, achieving spectacular results!”
Sebi Collell, CEO at Genioo
Note: iPhone 16, iPad Pro, and Apple Watch illustrations created by Guillem Espias in Figma. Background mesh animation programmed using ChatGPT.
