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CTO & Co-founder Maia Care

Byld


Job Location:

Barcelona - Spain

Salary: Not provided by the employer
Posted: 16 September 2026 (2 days ago)
Application Deadline: 14 December 2026
Vacancies: 1 Vacancy

Job Summary

Backed by GCO Ventures and Byld we are building Maia Care a digital platform aiming to transform how millions of women experience menopause.

Maia brings together science human support and technology to offer personalized plans access to certified professionals and a safe warm and scalable digital experience. Our goal is to help every woman navigate this stage with clarity support and confidence through an evidence-based proposition personalization and continuous accompaniment.

We have strong early validation active acquisition campaigns a first product version that is evolving and the momentum of two experienced venture builders who actively support the vision and growth of the project. After the CEO joined the next step is to strengthen the core team with someone who can turn the product and technology vision into a robust distinctive platform built to scale.

We are looking for an entrepreneurial strategic and deeply hands-on person to lead Maias technology as CTO. You will be responsible for defining the architecture making key stack and infrastructure decisions bringing AI in pragmatically and building the technical foundation on which Maia will grow over the coming years.

Responsibilities

Technology architecture & AI

  • Define and lead Maia Cares technical vision making decisions on architecture stack infrastructure integrations and data models.

  • Build a secure scalable platform ready to evolve from an initial version into a robust product.

  • Actively implement AI solutions both in development and in the product identifying opportunities to incorporate models agents and automations that create real value for users and the business.

  • Evaluate technologies tools partners and third-party services contributing to decisions on budget priorities and resource allocation.

  • Ensure best practices in development quality performance security privacy and technical maintenance.

Product & user experience

  • Work very closely with the CEO product business and health experts to translate user needs into simple useful and differentiated digital solutions.

  • Translate product strategy into a technical roadmap prioritizing speed learning and scalability.

  • Design and implement features that enable personalization symptom tracking access to experts content community and digital support models.

  • Ensure technology reinforces Maias value proposition: a human rigorous and personalized experience for women in peri-menopause and menopause.

  • Incorporate data and continuous learning into the product to improve user experience retention and outcomes.

Execution & 01 building

  • Lead the products technical development with a startup mindset: focus speed pragmatism and impact orientation.

  • Move from strategic decisions to real execution: writing code coordinating vendors or leading squads depending on the phase.

  • Manage the balance between building in-house leveraging partners and using external tools to maximize speed without compromising quality.

  • Create lightweight processes for development documentation deployment and tracking that enable fast learning and technical control.

  • Solve complex problems with autonomy good judgment and the ability to operate with incomplete information.

Team technical leadership & culture

  • Gradually build and lead Maias technical team defining profiles standards and ways of working.

  • Collaborate with external teams venture builders vendors and technology partners ensuring focus quality and alignment.

  • Foster a culture of ownership technical excellence continuous learning and collaboration across technology product business and health.

  • Act as the companys technical reference for the team the Board partners and key stakeholders.

Requirements
  • Strong experience in software development systems architecture and building digital products in real production environments.

  • Experience leading technical decisions around architecture stack infrastructure APIs integrations databases and cloud services.

  • Demonstrated ability to build digital products from early stages ideally in startups scaleups or 01 environments.

  • Experience or practical judgment in using AI applied to product automation personalization agents models or developer tools.

  • Hands-on mindset: comfort going deep into technical detail coding reviewing solutions or unblocking problems when needed.

  • Ability to work very closely with business and product translating strategic goals into clear technical decisions.

  • Judgment to decide when to build buy integrate or lean on external partners.

  • Sensitivity to security privacy data protection and responsible handling of sensitive information.

  • Collaborative leadership clear communication and the ability to align technical and non-technical profiles.

  • High autonomy adaptability and ownership to operate in an early-stage company.

  • Professional Spanish and English.

Nice to have
  • Previous experience as Tech Lead CPO Head of Engineering CTO Senior Full Stack Engineer or a similar role in digital startups.

  • Experience in digital health wellness femtech marketplaces communities B2C/B2B2C platforms or subscription models.

  • Knowledge of regulation data privacy compliance or security standards applicable to digital health products.

  • Experience integrating generative AI solutions conversational assistants recommendation engines automations or data-driven products.

  • Experience managing technology vendors or external development teams.

  • Genuine interest in womens health menopause and the social impact of building a solution that meets a real and growing need.

Benefits
  • Opportunity to join the founding team of an early-stage company with direct impact on key product and technology decisions.

  • Participate in Maia Cares long-term value creation through a phantom share plan aligning your contribution with the companys growth and future success.

  • Chance to build the architecture stack technical standards and future engineering team from scratch.

  • Build with the backing of two leading venture builders with strategic support and ecosystem synergies.

  • Active participation in building and scaling a purpose-driven company in a space with real long-term impact.

  • Autonomy to make meaningful technical decisions experiment with AI and build a distinctive platform from the ground up.

  • Work model: Hybrid with regular presence in Barcelona and coordination with teams and partners in Madrid.


About Company

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Byld, Spain's first corporate venture builder, creates businesses alongside major corporations. Its model focuses on leveraging a company's key assets (customers, distribution, know-how, intellectual property, resources, etc.) in the new venture, reducing risk and increasing the chanc ... View more

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