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Daniel S.DS

Daniel S.

Forward Deployed Engineer | AI Product Builder

€352/day
5 projects
Barcelona, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Daniel

Senior Full Stack Engineer and ex Engineering Manager with over 9 years of experience building digital products for mobile, web, and backend.

Over the past year, I have fully integrated AI-assisted development into my daily workflow. I use Claude Code, Cursor, and agentic processes to design architecture, implement features, review code, and accelerate delivery without compromising quality.

I am comfortable working from problem definition to production deployment, combining technical expertise, product vision, and stakeholder collaboration.

I have built products both within established companies and as a founder, developing end-to-end platforms and validating solutions with real users.

Specialties:

• Full Stack Development (TypeScript, React, Python)
• AI Agents and AI Automation
• Agentic Coding Workflows
• System Design
• Product Development
• Technical Leadership
• Architecture and scaling
  • English

    Fluent

  • Spanish

    Native or bilingual

Can work on-site
Barcelona (up to 50km), Madrid (up to 10km), Barcelona (up to 10km)

Experience

  • Maurique Labs
    Founder & Full Stack Product Builder
    November 2025 - Today (9 months)
    Barcelona, Spain
    Founder and full-stack developer focused on building digital products and automations using AI-assisted development workflows.

    I integrate Claude Code, Cursor, and agentic coding processes as part of the regular development cycle, from architecture design and technical planning to implementation, review, and documentation.

    I am currently developing my own products and end-to-end MVPs, combining product vision with technical execution.
    TypeScript React.js Claude Code AI Agents React Native
  • Taxfix
    Engineering Manager
    September 2024 - May 2025 (8 months)
    At Taxfix, my role as Engineering Manager combines my software engineering expertise with my project management background to effectively lead the Activation technical team. Our goal is to provide users with a frictionless start to their tax return, ensuring their engagement with the platform.

    I oversee key initiatives in critical domains such as Authentication, Onboarding Experience, User Management, and KYC, where we focus on optimizing the new user activation flow through experimentation, authentication improvements, and regulatory compliance. I also contribute to strategic initiatives like data lifecycle management and the definition of the Engineering Competency Framework.
    Team Management Team Leadership
  • Taxfix
    Senior Software Engineer
    January 2021 - October 2024 (3 years and 9 months)
    Madrid, Spain
    For 4 years, I worked as a Senior Software Engineer in the DIFM (Do It For Me) team, where I led initiatives related to system modularization and improving the user experience in the assisted tax filing service.

Reviews

5.0

Out of 2 ratings

SébastienS

Sébastien

Xpeer MedEd

Reviewed on 4/27/2021

It has been a pleasure working with Daniel, he contributes to the project at both a technical and functional level. He manages work well and understands needs quickly.
H

Hi

BWOW STUDIO S.L.

Reviewed on 11/30/2020

Recommendations

Manuel IbáñezMI
Sergio BlancoSB
Manuel Ibáñez and 1 other person have recommended Daniel

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Education

  • Computer Science Engineer
    Universidad Católica Andrés Bello (Caracas, Venezuela)
    2015
    Durante la carrera nos prepararon en áreas como desarrollo de software, base de datos, redes, gestión de proyectos y metodologías de software, entre otras cosas. Como trabajo especial de grado se desarrolló un sistema de reconocimiento de texto en tiempo real para el sistema operativo Android; donde se aplicaron conceptos como OCR, Visión por computador y procesamiento de imágenes.
  • Master in Development of Applications and Services for Mobile Devices
    Universidad Politécnica de Madrid
    2018
    Máster especializado en tecnologías de aplicaciones móviles como iOS, Android, Windows Phone y Xamarin, así como contenido de internet de las cosas. También nos formaron en materia relacionada con la ingeniería del software enfocada a las aplicaciones móviles.

Skill set

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