zx web is a Barcelona-based consultancy delivering founder-led software engineering and strategic consulting for startups, SMEs, and enterprise teams worldwide. We provide high-performance web solutions, technical assessments, and SEO strategy with a focus on scalable, maintainable systems.
We combine deep technical expertise in modern web development with strategic understanding of startup and business needs. Our team brings technical depth and real-world experience from both the engineering and investment sides of technology companies. Every project emphasizes clean code, performance optimization, and solutions that align with business objectives and investor expectations.
Architecture reviews, technology strategy, and system optimization for organizations at any scale. From startup MVPs to enterprise modernization, we provide hands-on guidance tailored to your technical challenges and growth stage.
Learn MoreCustom web applications built with modern JavaScript frameworks and cloud infrastructure. Specializing in Node.js/Deno backends, React/Preact frontends, and AWS deployments for reliable, maintainable systems.
Learn MoreTechnical SEO implementation and content strategy designed to increase organic visibility. We focus on measurable improvements in search rankings, qualified traffic, and conversion optimization.
Learn MoreComprehensive code reviews, architecture evaluations, and performance audits. We identify technical debt, security vulnerabilities, and optimization opportunities with actionable recommendations.
Learn MoreEvery project is led by our founding engineers, ensuring senior-level expertise and direct accountability from initial consultation through delivery.
Operating from Barcelona with international reach, we work seamlessly with teams across time zones. We understand the communication and coordination needs of distributed teams and global companies.
We prioritize working code over theoretical perfection. Our solutions are designed for real-world constraints, focusing on maintainability and team capability transfer.
**Primary:** Node.js, Deno, TypeScript
**Databases:** PostgreSQL, MongoDB, Redis
**APIs:** REST, GraphQL, WebSocket
**Frameworks:** React, Preact, Next.js
**State Management:** Redux, Zustand, Context API
**Styling:** Tailwind CSS, CSS Modules, Styled Components
**Cloud Platforms:** AWS (EC2, S3, Lambda, RDS, CloudFront)
**Infrastructure as Code:** CloudFormation, Terraform
**CI/CD:** GitHub Actions, GitLab CI, Jenkins
**Version Control:** Git, GitHub, GitLab
**Testing:** Jest, Vitest, Playwright, Cypress
**Monitoring:** CloudWatch, Sentry, New Relic
Connect with zx web' founders to discuss your technical challenges. We provide honest assessments, practical solutions, and hands-on engineering support for teams worldwide.