EY (Ernst & Young) is a global leader in assurance, tax, consulting, and strategy and transactions services. As one of the "Big Four" professional services firms, it operates a vast network of member firms across more than 150 countries, employing nearly 400,000 professionals worldwide to help clients navigate complex regulatory and business challenges.

In Spain, EY maintains a significant footprint with a major headquarters in Madrid and a strong presence in Barcelona and other regional hubs. The firm is a major recruiter of international talent, offering diverse opportunities in digital transformation, financial services, and sustainability, often within multicultural teams where English is a primary working language.

EY was formed in 1989 through the merger of Ernst & Whinney and Arthur Young & Co. Its roots date back to the 19th century with founders Arthur Young and Alwin C. Ernst, who established their respective firms in the US and UK.

For international professionals

EY Spain frequently hires international profiles for its Global Delivery Services and specialized consulting arms.
The company provides a structured career development framework and extensive internal training programs.
Many roles in technology and consulting hubs allow for hybrid work arrangements.
The firm has a dedicated International Mobility program to facilitate internal transfers and relocations.
Offices are located in major Spanish business hubs, offering flexibility in geographic placement.

Blockchain Architect

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

At EY, we shape the future with confidence.
Here you will find more than a job: an opportunity to grow, learn, and leave a mark.

Join our 7,000 professionals in Spain across 15 offices and a global network of 400,000 people working every day to transform businesses and societies.

#ShapeTheFutureWithConfidence | #EYCareers | #BuildingABetterWorkingWorld

The Opportunity

At EY, we are a leading global firm in audit, consulting, strategy and transactions, and legal and tax services.
We are driven by innovation, technology, and the purpose of generating a lasting positive impact.

We are looking for a Blockchain Architect - Digital Assets with at least 4 years of experience in technology, preferably in the banking sector.

Within the Emerging Technologies area for the Financial Services and Insurance sector, the individual will join strategic programs related to the adoption of digital assets and blockchain technology in financial entities. They will be responsible for the definition and evolution of technical architectures for digital asset platforms (custody, tokenization, payments), designing end-to-end solutions that integrate on-chain and off-chain components. The role requires designing secure, scalable architectures aligned with the regulatory context, combining technical blockchain knowledge with an understanding of the financial business. They will act as a technical reference and Subject Matter Expert (SME), ensuring the viability of solutions and aligning architectural decisions with principles of security, efficiency, scalability, and progressive adoption.

Your Main Responsibilities

Definition of blockchain and digital asset solution architecture.

- Design of custody, tokenization, and payment platforms.

- Definition of on-chain / off-chain components.

- Custody models and key management.

Design of blockchain integrations:

- Integration with custodians, exchanges, and crypto providers.

- Design of APIs and blockchain access services.

Participation in digital asset adoption:

- Definition of use cases (custody, tokenization, stablecoins, payments).

- Support in technological strategy and roadmap.

Evaluation of technological solutions and vendors:

- Digital custodians.

- Blockchain providers (nodes, APIs).

- Tokenization platforms. Collaboration with:

- Business teams (banking, digital assets).

- Development teams (backend/frontend).

- Cloud and infrastructure teams.

Requirements:

Degree in Computer Engineering, Telecommunications, or similar.

+4 years of experience in technology, preferably in the banking sector

High level of English (international environment experience is a plus)

Desirable:

- Blockchain certifications (CHFP, CBP, CCSSA, CCSSI).

- Certifications in architecture or integration.

Experience in:

- Technical architecture

- Blockchain and digital assets.

Participation in programs for:

- Design and implementation of crypto platforms

- Integration of blockchain solutions.

Blockchain and digital assets experience in:

- Digital asset ecosystem (custody, trading, tokenization).

- Blockchain architectures.

- EVM networks and smart contracts.

Integration with:

- Blockchain nodes.

- Web3 APIs.

- Custodians and crypto providers.

Development and technology:

Experience in:

- Backend (APIs, services).

- Frontend knowledge (desirable).

- Integration of complex systems.

Cloud and distributed systems:

- Experience in cloud environments (AWS, Azure, GCP).

- Cloud-native architectures.

- Containers and orchestration (Docker, Kubernetes).

Financial sector knowledge

- Asset custody

- Market infrastructure

- Financial products

What do we offer you?

Well-being and personal benefits

Wellbeing HUB: includes policies and actions for physical (Wellhub) and mental health.
Life and Accident Insurance.
Bankinter Office with special conditions.
EY Flex Flexible Compensation Plan (transport, training, restaurant card, childcare...).

Flexibility and work-life balance

Hybrid work and flexibility depending on the project.

Professional Development

Continuous training through EY University, with an individualized training itinerary.
Career plan to boost annual growth within the firm.
Personalized support: you will have the support of a Buddy and a Counselor throughout your journey.

Culture and work environment

Work in a dynamic and collaborative environment.
Opportunity to collaborate with global and multidisciplinary teams.
Expansion of your professional network in a diverse and enriching context.

Social Commitment

Social impact actions through the EY Foundation.

#LI-HYBRID

View original advert (Spanish)

En EY, damos forma al futuro con confianza.
Aquí encontrarás más que un trabajo: una oportunidad para crecer, aprender y dejar huella.

Únete a nuestros 7.000 profesionales en España y 15 oficinas y a una red global de 400.000 personas que trabajan cada día para transformar negocios y sociedades.

#ShapeTheFutureWithConfidence | #EYCareers | #BuildingABetterWorkingWorld

La oportunidad

En EY, somos una firma global líder en auditoría, consultoría, estrategia y transacciones y servicios legales y fiscales.
Nos impulsa la innovación, la tecnología y el propósito de generar un impacto positivo duradero.

Estamos buscando un Arquitecto/a Blockchain - Activos Digitales con al menos 4 años de experiencia en tecnología, preferiblemente en sector bancario

Dentro del área de Emerging Technologies en Sector Financiero y Seguros, la persona se incorporará a programas estratégicos relacionados con la adopción de activos digitales y tecnología blockchain en entidades financieras. Será responsable de la definición y evolución de arquitecturas técnicas para plataformas de activos digitales (custodia, tokenización, pagos), diseñando soluciones end-to-end que integran componentes on-chain y off-chain. El rol requiere diseñar arquitecturas seguras, escalables y alineadas con el contexto regulatorio, combinando conocimiento técnico en blockchain con entendimiento del negocio financiero. Actuará como referente técnico y Subject Matter Expert (SME), asegurando la viabilidad de las soluciones y alineando las decisiones de arquitectura con principios de seguridad, eficiencia, escalabilidad y adopción progresiva.

Tus principales funciones

Definición de arquitectura de soluciones blockchain y activos digitales.

- Diseño de plataformas de custodia, tokenización y pagos.

- Definición de componentes on-chain / off-chain.

- Modelos de custodia y gestión de claves.

Diseño de integraciones blockchain:

- Integración con custodios, exchanges y proveedores crypto.

- Diseño de APIs y servicios de acceso a blockchain.

Participación en la adopción de activos digitales:

- Definición de casos de uso (custodia, tokenización, stablecoins, pagos).

- Soporte en estrategia tecnológica y roadmap.

Evaluación de soluciones tecnológicas y vendors:

- Custodios digitales.

- Proveedores blockchain (nodos, APIs).

- Plataformas de tokenización. Colaboración con:

- Equipos de negocio (banca, activos digitales).

- Equipos de desarrollo (backend/frontend).

- Equipos de cloud e infraestructura.

Requisitos:

Grado en Ingeniería Informática, Telecomunicaciones o similar.

+4 años de experiencia en tecnología, preferiblemente en sector bancario

Inglés alto (valorable entorno internacional)

Valorable:

- Certificaciones blockchcain (CHFP, CBP, CCSSA, CCSSI).

- Certificaciones en arquitectura o integración.

Experiencia en:

- Arquitectura técnica

- Blockchain y activos digitales.

Participación en programas de:

- Diseño e implementación de plataformas crypto

- Integración de soluciones blockchain.

Blockchain y activos digitales Experiencia en:

- Ecosistema de activos digitales (custodia, trading, tokenización).

- Arquitecturas blockchain.

- Redes EVM y smart contracts.

Integración con:

- Nodos blockchain.

- APIs Web3.

- Custodios y proveedores crypto.

Desarrollo y tecnología:

Experiencia en:

- Backend (APIs, servicios).

- Conocimientos de frontend (valorable).

- Integración de sistemas complejos.

Cloud y sistemas distribuidos:

- Experiencia en entornos cloud (AWS, Azure, GCP).

- Arquitecturas cloud-native.

- Contenedores y orquestación (Docker, Kubernetes).

Conocimiento sector financiero

- Custodia de activos

- Infraestructura de mercado

- Productos financieros

¿Qué te ofrecemos?

Bienestar y beneficios personales

Wellbeing HUB: incluye políticas y acciones para la salud física (Wellhub) y mental.
Seguro de Vida y Accidentes.
Oficina Bankinter con condiciones especiales.
Plan de Compensación Flexible EY Flex (transporte, formación, tarjeta restaurante, guardería...).

Flexibilidad y conciliación

Trabajo híbrido y flexibilidad según proyecto.

Desarollo profesional

Formación continua a través de EY University, con un itinerario formativo individualizado.
Plan de carrera para potenciar el crecimiento anual dentro de la firma.
Acompañamiento personalizado: contarás con el apoyo de un Buddy y un Counselor durante toda tu trayectoria.

Cultura y entorno de trabajo