We Engineer
Pixel-Perfect
Digital Systems
Calle Juan Sebastián Elcano, 3, 4º Izq. 24404 Ponferrada (León) Spain
Precision Over
Convention
Modern, clean, and conversion-focused web layouts. We design unique digital interfaces engineered to optimize user engagement and scale your online presence seamlessly.
Pixel Governance
Every component is measured, tested, and verified against a strict visual spec before deployment.
Performance Core
Sub-second load times are non-negotiable. We engineer every millisecond of the critical rendering path.
Modular Systems
Design systems and component libraries that scale with your product without accumulating debt.
Data-Driven Decisions
Every design choice is backed by analytics, A/B testing, and conversion data — never intuition alone.
Core Systems
Custom Design System Architecture
Phase 1: Discovery & Audit
We conduct a comprehensive audit of your existing brand assets, component libraries, and design tokens. Through stakeholder interviews and competitive analysis, we map your visual language to a scalable design system framework. Deliverables include a design token specification, typography scale, color matrix, and a component inventory with dependency mapping across your entire digital ecosystem.
Phase 2: System Construction
Our engineers build a modular, multi-platform design system using Figma as the source of truth, compiled into a living Storybook environment. Every component is built with atomic design principles, WCAG 2.1 AA compliance baked in, and responsive behavior defined across 5 breakpoints. We implement automated visual regression testing with Chromatic to catch drift before it ships.
Phase 3: Adoption & Governance
We deliver the complete design system with integration guides for React, Vue, and vanilla Web Components. Documentation is hosted as an interactive portal with live code playgrounds. We establish versioning protocols, contribution guidelines, and a deprecation workflow so your system scales with your product roadmap without accumulating technical debt.
High-Performance Frontend Engineering
Phase 1: Architecture Planning
We analyze your traffic patterns, user journeys, and performance bottlenecks using Lighthouse, WebPageTest, and real user monitoring data. Our architects select the optimal rendering strategy — SSR, SSG, ISR, or hybrid — based on your content volatility and SEO requirements. We define the critical rendering path, code-splitting boundaries, and resource loading priorities to achieve sub-second LCP scores.
Phase 2: Implementation Sprint
Frontend engineers build your application using Next.js, Remix, or Astro depending on the chosen architecture. Every component implements intersection observer-based lazy loading, image optimization via Sharp/AVIF, and font subsetting. We implement edge-cached CDN strategies, service worker offline shells, and predictive prefetching based on navigation probability models.
Phase 3: Performance Validation
We run a full Core Web Vitals audit across mobile and desktop profiles, documenting LCP, FID, CLS, and TTFB metrics. Load testing with k6 simulates traffic spikes up to 10x baseline. We deliver a performance budget configuration, monitoring dashboards, and a quarterly optimization playbook to maintain sub-2s load times as your content scales.
Headless CMS Integration
Phase 1: Content Modeling
We map your existing content structures into a flexible, headless-native schema. Whether migrating from WordPress, Drupal, or spreadsheets, we design content types with relational linking, localized variants, and scheduled publishing workflows. Our content architects define taxonomies, global fields, and reusable blocks that give editors maximum flexibility without breaking downstream templates.
Phase 2: Platform Build & API Layer
We deploy your headless CMS — Contentful, Strapi, Sanity, or a custom solution — and build a GraphQL/REST API layer with automated type generation. Webhook pipelines trigger incremental rebuilds on content changes. We implement preview deployments, draft modes, and role-based access control so editorial teams can iterate without engineering bottlenecks.
Phase 3: Editorial Handover
We deliver a custom editorial interface with structured content previews, inline validation, and media asset management. Training sessions cover content modeling best practices, SEO field management, and A/B test configuration. We provide a 60-day editorial support window with SLA-backed response times to ensure your team operates independently from day one.
Progressive Web App Development
Phase 1: Offline Strategy & Shell Design
We analyze your application's core functionality to determine which features require offline capability. Our engineers design an app shell architecture with network-first, cache-first, and stale-while-revalidate strategies mapped to each content type. We define the service worker lifecycle, background sync protocols, and push notification architecture for re-engagement campaigns.
Phase 2: PWA Core Implementation
We build the service worker with Workbox, implementing intelligent caching strategies, periodic background sync for data freshness, and a install prompt with custom beforeinstallprompt handling. The web app manifest is configured with adaptive icons, splash screens for every device, and standalone display mode. We implement Web Push notifications with VAPID authentication and segmentation.
Phase 3: Store Submission & Analytics
We prepare and submit your PWA to the Google Play Store via TWA (Trusted Web Activity) and document the Apple Add to Home Screen requirements. Lighthouse PWA audit achieves 100/100 across all categories. We deliver analytics dashboards tracking install rates, session depth, offline usage patterns, and push notification engagement metrics.
E-Commerce Conversion Optimization
Phase 1: Funnel Audit & Data Mapping
We instrument your entire purchase funnel with event tracking, heatmaps, and session recordings via Posthog and Hotjar. Our analysts identify drop-off points, cart abandonment triggers, and micro-friction areas through cohort analysis and funnel visualization. We benchmark your conversion rate against industry medians and define a prioritized optimization roadmap with projected revenue impact for each intervention.
Phase 2: Interface Re-Engineering
We rebuild critical conversion touchpoints — product pages, cart flows, checkout sequences — using evidence-based UX patterns. Implementations include instant product previews, progressive disclosure for variant selection, one-click checkout with Stripe/PayPal, and real-time inventory indicators. Every change is A/B tested with statistical significance requirements before full rollout.
Phase 3: Measurement & Iteration
We deploy a conversion analytics dashboard tracking revenue per visitor, average order value, checkout completion time, and device-specific conversion deltas. Automated alerts trigger when metrics deviate from baseline. We deliver a 90-day optimization calendar with bi-weekly test cycles, ensuring continuous improvement long after the initial engagement.
API & Backend Architecture
Phase 1: System Design & Schema
We design your backend architecture using domain-driven design principles, mapping business entities to API resources with proper RESTful or GraphQL conventions. Database schemas are normalized with indexed query patterns optimized for your access patterns. We define authentication flows (OAuth 2.0, JWT), rate limiting strategies, and API versioning policies to ensure long-term maintainability.
Phase 2: Core Development
Backend engineers implement the API layer using FastAPI, Django REST Framework, or Express depending on your stack preference. Every endpoint includes input validation via Pydantic/Zod, automated OpenAPI documentation, and comprehensive error handling with structured response formats. We implement database migrations, seed scripts, and integration test suites with 90%+ coverage on critical paths.
Phase 3: Deployment & Scaling
We containerize the application with Docker, configure CI/CD pipelines via GitHub Actions, and deploy to your preferred infrastructure (AWS, GCP, Railway). Monitoring is set up with Prometheus and Grafana dashboards tracking request latency, error rates, and database connection pools. We deliver runbooks for common operational scenarios and a scaling playbook for traffic growth projections.
SEO & Technical Visibility
Phase 1: Technical SEO Audit
We crawl your entire site architecture with Screaming Frog and Sitebulb, identifying broken links, orphan pages, duplicate content, and crawl budget waste. Core Web Vitals are measured across real user data from Search Console. We audit structured data implementation, XML sitemap coverage, robots.txt directives, and canonical tag consistency. Deliverable is a prioritized remediation matrix ranked by traffic impact and implementation effort.
Phase 2: On-Page & Schema Implementation
We implement JSON-LD structured data for Organization, Product, FAQ, and Breadcrumb schemas as applicable. Meta titles and descriptions are rewritten with keyword mapping to search intent clusters. Internal linking is restructured using topic cluster models with pillar pages and supporting content nodes. Image alt text, heading hierarchy, and semantic HTML are normalized across all templates.
Phase 3: Monitoring & Reporting
We configure Search Console property validation, set up rank tracking for 50+ target keywords, and build a monthly reporting dashboard with organic traffic trends, indexing coverage, and position changes. Automated alerts notify you of ranking drops, manual actions, or index coverage anomalies. We deliver a 6-month content and technical roadmap aligned with your growth targets.
Accessibility & Compliance Engineering
Phase 1: WCAG Compliance Audit
We conduct a manual and automated accessibility audit against WCAG 2.1 AA standards using axe-core, WAVE, and screen reader testing with NVDA and VoiceOver. Every interactive element is tested for keyboard navigation, focus management, and ARIA attribute correctness. We document color contrast failures, missing alternative text, form label associations, and motion sensitivity violations with exact remediation instructions.
Phase 2: Remediation Sprint
Our engineers implement semantic HTML rewrites, ARIA live regions for dynamic content, skip navigation links, and focus trap management for modals and drawers. Form components receive real-time validation with accessible error announcements. Interactive widgets are rebuilt to match WAI-ARIA Authoring Practices. All animations respect prefers-reduced-motion media queries.
Phase 3: Verification & Documentation
We re-run the full WCAG audit confirming zero violations at AA level. An Accessibility Statement is drafted and published on your site with conformance claims and contact information for reporting issues. We deliver a developer accessibility guide with coding standards, a component-level checklist, and training materials for your team to maintain compliance across future releases.
Our Workflow
System Diagnostics
We map your existing digital infrastructure, identify bottlenecks, and model user interaction patterns. Full technical audit with prioritized remediation matrix.
Architecture Design
We engineer the system architecture — component hierarchies, data flows, API contracts, and deployment pipelines. Every decision is documented and reversible.
Iterative Build
Two-week sprint cycles with live staging previews. You review, we refine. Every build passes automated performance and accessibility gates before delivery.
Deployment & Handover
Production launch with zero-downtime deployment, monitoring dashboards configured, documentation delivered, and a 30-day stabilization window included.
Engineered Outcomes
Ready to Initialize?
Let's architect a digital system that scales with your ambition. Every project begins with a diagnostic protocol.
Execute Node Protocol