# Dallonses

> Dallonses is a Barcelona-based digital product agency of ~20 senior technologists. We think, design, and develop custom-built digital solutions that solve complex problems and unlock business growth. Everything is done in-house, end to end — no handoffs, no subcontracting. Founded 8 years ago. B Corp certified. ISO 27001 certified. Sister agency of Vasava.

The canonical English site is at https://www.dallonses.com/en/. The site is also available in Català (/ca/), Español (/es/), and Deutsch (/de/).

Contact: hello@dallonses.com · +34 93 595 1727 · C/ Aragó 14, 08015 Barcelona


## Core pages

- [Home](https://www.dallonses.com/en/): Agency positioning, recent work highlights, client list, team culture teaser.
- [About](https://www.dallonses.com/en/about/): Company history, team size (20+), methodology, numbers (8+ years, 60+ projects, 500h donated to social causes, 33% women in leadership, 78% team satisfaction), Vasava relationship.
- [Services](https://www.dallonses.com/en/services/): Full catalogue of ~40 services across four pillars — Digital Development, Data Intelligence, Digital Design, QA & Engineering.
- [Projects](https://www.dallonses.com/en/projects/): Portfolio index with filters by service pillar. Six published case studies as of June 2026.
- [Culture](https://www.dallonses.com/en/culture/): Team life, values, how the agency works internally.
- [Contact](https://www.dallonses.com/en/contact/): Three entry points — Start a project, Book a call, Join our team.
- [Knowledge](https://www.dallonses.com/en/knowledge/): Editorial section (articles, insights).
- [Work with us](https://www.dallonses.com/en/job-offers/): Open positions.


## Services

Services are grouped under four pillars. Each pillar has a landing page and individual service pages.

### Digital Development
https://www.dallonses.com/en/digital-development/

- [AI & Machine Learning Solutions](https://www.dallonses.com/en/digital-development/ai-machine-learning-solutions/): Custom AI models, recommendation engines, and ML pipelines integrated into products and business workflows.
- [API-First & Headless Development](https://www.dallonses.com/en/digital-development/api-first-headless/): Decoupled architectures where the backend exposes clean APIs consumed by any frontend or third-party system.
- [Analytics Implementation](https://www.dallonses.com/en/digital-development/analytics-implementation/): Accurate, privacy-conscious tracking setups across GA4, Meta Pixel, and other tools — from tagging strategy to validation.
- [CI/CD Pipelines and Automation](https://www.dallonses.com/en/digital-development/cicd-pipelines/): Automated build, test, and deployment pipelines that reduce release friction and improve engineering reliability.
- [CRM & Marketing Automation](https://www.dallonses.com/en/digital-development/crm-marketing-automation/): CRM integrations, lead flows, and automated marketing sequences connected to the product data layer.
- [Chatbots & Virtual Assistants](https://www.dallonses.com/en/digital-development/chatbots-virtual-assistants/): Conversational interfaces — from simple FAQ bots to AI-driven assistants that guide users through complex decisions.
- [Custom Web Applications](https://www.dallonses.com/en/digital-development/custom-web-applications/): Bespoke web platforms engineered from scratch for complex business logic, performance, and scale.
- [E-commerce Development](https://www.dallonses.com/en/digital-development/ecommerce-development/): Custom e-commerce builds and integrations focused on conversion, catalog complexity, and operational reliability.
- [Enterprise Portals & Intranets](https://www.dallonses.com/en/digital-development/enterprise-portals-intranets/): Internal platforms and employee-facing tools for large, distributed organizations.
- [Integration Platforms](https://www.dallonses.com/en/digital-development/api-integration-service/): Connecting disparate systems — ERPs, CRMs, third-party APIs — into coherent, maintainable data flows.
- [Interactive Installations](https://www.dallonses.com/en/digital-development/interactive-installations/): Software for physical interactive experiences: events, retail spaces, exhibitions, and brand activations.
- [IoT Applications](https://www.dallonses.com/en/digital-development/iot-applications/): Software connecting physical devices to digital systems — real-time data, remote control, event-driven logic.
- [Mobile App Development](https://www.dallonses.com/en/digital-development/app-development/): Native and cross-platform mobile apps (iOS and Android) built for performance and real-world reliability.
- [Progressive Web Apps (PWAs)](https://www.dallonses.com/en/digital-development/progressive-web-apps/): Web applications with native-like capabilities — offline support, installability, push notifications — without an app store.
- [Sustainable Tech Consulting](https://www.dallonses.com/en/digital-development/digital-consulting/): Technical strategy and architecture guidance for teams navigating complex digital transformation decisions.
- [Web Accessibility & WCAG Compliance](https://www.dallonses.com/en/digital-development/accessibility-wcag/): Audits, remediation, and development practices that bring products into WCAG compliance.
- [Web Development](https://www.dallonses.com/en/digital-development/web-development/): Full-stack web development across frontend, backend, and infrastructure — from greenfield builds to long-term evolution.

### Data Intelligence
https://www.dallonses.com/en/data-intelligence/

- [Business Intelligence (BI) & Reporting](https://www.dallonses.com/en/data-intelligence/business-intelligence/): Dashboards and BSC reporting systems that turn operational data into decisions for leadership teams.
- [Campaign Attribution & Performance Dashboards](https://www.dallonses.com/en/data-intelligence/campaign-attribution/): Multi-touch attribution models and real-time marketing dashboards that connect spend to outcomes.
- [Customer Data Platforms (CDPs)](https://www.dallonses.com/en/data-intelligence/customer-data-platforms/): Unified customer profiles built from first-party data across touchpoints, enabling personalization and segmentation at scale.
- [Data Analytics & Visualization](https://www.dallonses.com/en/data-intelligence/data-analytics-visualization/): Turning raw data into clear, actionable visual intelligence for product, marketing, and operations teams.
- [Data Lakes & Data Warehouses](https://www.dallonses.com/en/data-intelligence/data-lakes-data-warehouses/): Scalable data infrastructure for storing, processing, and querying large volumes of structured and unstructured data.
- [Data-Driven Customer Insights](https://www.dallonses.com/en/data-intelligence/data-driven-customer-insights/): Behavioral analysis and segmentation that reveals how customers actually interact with products and where to improve.
- [Lead Scoring & Marketing Insights](https://www.dallonses.com/en/data-intelligence/lead-scoring/): ML-powered lead scoring models integrated with CRM and CDP data to prioritize sales effort.
- [Predictive Analytics & Machine Learning](https://www.dallonses.com/en/data-intelligence/predictive-analytics-machine-learning/): Forecasting models and ML pipelines that help businesses anticipate demand, churn, and opportunity.

### Digital Design
https://www.dallonses.com/en/digital-design/

- [Design Systems Development](https://www.dallonses.com/en/digital-design/design-systems/): Component libraries and design tokens that keep large products consistent across teams and over time.
- [Iterative Prototyping](https://www.dallonses.com/en/digital-design/iterative-prototyping/): Rapid, testable prototypes that validate concepts and reduce risk before full development begins.
- [Mobile App Design](https://www.dallonses.com/en/digital-design/app-design/): UX and UI for iOS and Android apps, designed around how people actually use their phones.
- [UX Research & Behavioural Insights](https://www.dallonses.com/en/digital-design/ux-research-behavioural-insights/): User interviews, usability studies, and behavioral analysis that ground design decisions in real evidence.
- [User Experience (UX) Design](https://www.dallonses.com/en/digital-design/user-experience-design-ux/): End-to-end experience design — flows, information architecture, interaction patterns — for complex digital products.
- [User Interface (UI) Design](https://www.dallonses.com/en/digital-design/ui-design/): Visual design that balances brand expression, usability, and technical constraints into polished interfaces.
- [User Testing & Optimization](https://www.dallonses.com/en/digital-design/user-testing-optimization/): Structured testing with real users to identify friction, validate changes, and improve conversion.
- [Website Design](https://www.dallonses.com/en/digital-design/web-design/): Design for marketing sites and content platforms — built to convert, communicate, and scale editorially.

### QA & Engineering
https://www.dallonses.com/en/qa-engineering/

- [Accessibility Testing](https://www.dallonses.com/en/qa-engineering/accessibility-testing/): Manual and automated testing against WCAG standards to identify and document accessibility barriers.
- [Automated Testing Frameworks](https://www.dallonses.com/en/qa-engineering/automated-testing-frameworks/): End-to-end, integration, and unit test suites that catch regressions before they reach production.
- [Cost Optimization](https://www.dallonses.com/en/qa-engineering/cost-optimization/): Infrastructure and architecture reviews that reduce cloud spend without compromising performance or reliability.
- [Performance & SEO QA](https://www.dallonses.com/en/qa-engineering/seo-qa/): Technical audits covering Core Web Vitals, crawlability, structured data, and on-page SEO implementation quality.
- [Performance Testing & Monitoring](https://www.dallonses.com/en/qa-engineering/performance-testing-monitoring/): Load testing, stress testing, and ongoing monitoring to ensure systems hold up under real and peak traffic.
- [Platform Standardization](https://www.dallonses.com/en/qa-engineering/platform-standardization/): Bringing consistency to codebases, tooling, and deployment practices across teams and projects.
- [QA Strategy & Governance](https://www.dallonses.com/en/qa-engineering/qa-strategy/): Quality assurance frameworks, testing policies, and governance processes for engineering teams that need structure.


## Projects (case studies)

### Wikiparfum — Puig
https://www.dallonses.com/en/projects/wikiparfum/
A universal fragrance discovery platform built for Puig (Paco Rabanne, Jean Paul Gaultier, Carolina Herrera, Nina Ricci). A database of 30,000 fragrances enriched with ingredients, olfactive families, brand stories, and connections. Custom search, personalization engine, editorial CMS, and SEO architecture. Published in 9 languages including Arabic and Chinese. React Native mobile app (iOS + Android) sharing the same GraphQL API. A custom data lake captures all user interactions in real time, feeding market intelligence back to Puig's product and strategy teams. Additionally, a multi-tenant GraphQL API opens the catalog to external partners with scoped permissions. Result: 1M+ users, 2x year-over-year growth, 70% mobile traffic.
Services: Web development, Mobile App Development, UX/UI Design, AI & ML, Data Analytics, BI, CRM, Design Systems, Performance & SEO QA, CI/CD.

### Scentbot — Puig
https://www.dallonses.com/en/projects/scentbot/
The first AI chatbot for perfumery. Built on Puig's Wikiparfum data layer (30,000 fragrances, 1,400+ brands, 1,498+ ingredients). Users describe a mood, memory, or occasion in text or image; Scentbot responds conversationally and narrows to a recommendation with visuals, olfactive context, live pricing, and a buy button. The recommendation engine learns from every conversation. Embeds into any retailer site with minimal setup; fully white-labelable per brand. Shares the same CMS as Wikiparfum. Engine is product-agnostic and can power discovery for any high-choice category.
Services: AI & ML Solutions, API-First & Headless Development, E-commerce Development, QA Strategy, Automated Testing.

### AccessTicket — Primavera Sound
https://www.dallonses.com/en/projects/accessticket/
Full event access management platform built for Primavera Sound's return post-COVID (2022), handling 500,200 attendees across two weekends and multiple venues. Pre-event KYC identity validation links each wristband to a verified person. Up to 60 simultaneous access lanes via a control app on tablets with QR scanners; offline mode prevents network outages from blocking gates. In-app credit wallet for cashless transactions; ticket sales with a queue system that absorbs high-demand drops. Real-time organizer dashboard: attendance by zone, entry/exit peaks, bar consumption by ticket type. All behavioral data linked to verified identities feeds Primavera Sound's CRM. Platform has run four years with zero incidents. Now a standalone product available to any event organizer.
Services: Mobile App Development, Mobile App Design, IoT Applications, API-First & Headless Development, BI & Reporting, Data-Driven Customer Insights.

### HP Content Hub — HP Large Format
https://www.dallonses.com/en/projects/content-hub/
Website and CMS for HP's Large Format business, serving 78 countries across all alphabets and scripts (Latin, CJK, Arabic RTL). A library of 50+ branded content blocks (stats, video, gated documents, testimonials, product showcases, comparison tables) that enforce brand consistency by design. Role-based permissions let regional teams publish independently while global leadership maintains oversight. FlexibleContent drag-and-drop layout composer enables any page structure without engineering involvement. Gated content generates leads that flow directly into HP's CRM with full attribution. Five-year ongoing partnership.
Services: Web Development, Custom Web Applications, UX/UI Design, Design Systems, Analytics Implementation, CRM & Marketing Automation, CI/CD, Automated Testing, Performance Testing, API-First & Headless Development.

### Spring GDS 25th Anniversary — Spring GDS (PostNL)
https://www.dallonses.com/en/projects/spring-gds-25-anniversary/
Internal connection platform for Spring GDS, the cross-border logistics arm of PostNL, operating across 30+ countries and 190 delivery destinations. Core feature: a real-time 3D globe of the company where employees spin, explore by country, and find colleagues. Affinity-based matching algorithm surfaces the colleagues most worth connecting with — not by org chart, but by shared values and interests. Direct messaging and a company-wide forum both run through AI moderation checking messages against Spring GDS's code of conduct in real time. Employee profile system, achievements layer, and a 25-year photo time capsule. Custom inward-facing CRM gives leadership segmented audience visibility — by country, role, interest, affinity cluster — for targeted communications and workforce analytics. Platform is live and being extended beyond the anniversary into a permanent internal network.
Services: Web Development, Enterprise Portals & Intranets, Website Design, CRM & Marketing Automation, Web Accessibility & WCAG Compliance.

### Vizitio
https://www.dallonses.com/en/projects/vizitio/
Full-stack build of a two-sided activity booking marketplace from zero. AI search is the primary interface — users describe intent in natural language ("what can I do this weekend with three friends, outdoors?") and the platform returns matching plans. Streaming-style discovery home page with themed sliders. End-to-end booking and payment flow engineered for reliability. Custom CMS for activity providers to manage listings and availability. Business intelligence dashboard for the Vizitio team covering bookings, billing, host performance, and growth. Architecture informed by AccessTicket booking and payment experience.
Services: Web Development, UX/UI Design, UX Research, User Testing, Data Analytics, Chatbots & Virtual Assistants, Web Accessibility & WCAG Compliance.


## Industries and verticals

Dallonses has hands-on project experience across these sectors:

- **Luxury & fragrance**: Multi-year partnership with Puig (Paco Rabanne, Jean Paul Gaultier, Carolina Herrera, Nina Ricci) — fragrance discovery platforms, AI chatbots, B2B API products.
- **Live events & ticketing**: AccessTicket for Primavera Sound — access control, KYC, cashless payments, and real-time analytics at 500,000+ attendee scale.
- **Enterprise technology**: HP Large Format — global CMS and content platform serving 78 countries.
- **Logistics & operations**: Spring GDS (PostNL) — internal employee network and workforce intelligence platform for a 30-country logistics operation.
- **Marketplaces & booking**: Vizitio — two-sided activity booking marketplace with AI search, host CMS, and payment processing.
- **Legal tech**: Web presence and platform for a legal technology company.
- **Fashion & retail**: Long-term digital partnerships with global fashion brands.
- **Hospitality & food**: Customer-facing and internal platforms for hospitality operators.


## Technology stack

### Frontend
React · Next.js · Angular · Vue.js · TypeScript · Tailwind CSS · Web Components

### Backend & APIs
Node.js · Express · Fastify · NestJS · Python · FastAPI · Django · REST · GraphQL · AWS Lambda

### Mobile
React Native · Expo · iOS (Swift) · Android (Kotlin)

### Databases
MongoDB · PostgreSQL · MySQL · Redis · Aurora · Firebase · Vector DB

### Cloud & Infrastructure
AWS · CloudFront · S3 · GitHub Actions · Docker

### AI & Integrations
Claude API · OpenAI · TensorFlow · Higgsfield

### Analytics & Data
Snowflake · Databricks · Grafana · Custom visual analytics dashboards


## Engagement model

Dallonses works both on fixed-scope projects and ongoing retainer relationships. Long-term partnerships are common — several clients have worked with the agency for multiple years across successive products (HP 5+ years, Puig multiple products, Primavera Sound 4+ years). The agency takes full ownership of delivery end to end, from discovery through design, engineering, QA, and post-launch evolution.


## Geography

Headquartered in Barcelona. Primary market is Spain, with a strong presence across Europe. International project experience includes work with global brands operating across North America, Asia, the Middle East, and 190+ countries (Spring GDS / PostNL). The team works in English, Spanish, Catalan, and German.


## Not a good fit

Dallonses is a product engineering agency focused on complex, custom-built digital products. It is likely not the right fit for:

- Marketing campaigns, brand identity, or creative advertising
- Low-code or no-code builds (Webflow, Wix, and similar)
- One-off small projects with no ongoing relationship or growth ambition


## Key facts

- All work done exclusively in-house — no freelancers, no subcontracting.
- The agency's stated edge is seniority: all projects are run by experienced practitioners, not juniors.
- B Corp certified and ISO 27001 certified.
- Sister agency of Vasava (https://www.vasava.es/), a Barcelona design studio — they share an office and collaborate on projects requiring high-end visual design.
- Site available in: English, Català, Español, Deutsch.
- To start a project: https://www.dallonses.com/en/start-a-project/
- To book a call: https://calendar.app.google/2GGnrwvitkQwDaoh6
- To view open positions: https://www.dallonses.com/en/job-offers/