4.125 Ofertas de Back End en España

because RED now has a new opportunity for a Back End Developer to join one of our key partners on an initial 12-month contract for an ongoing project.

• Start date: immediately
• Duration 12 month+
• Location: Madrid, Spain
• Hybrid: 1-2 days/ week in Madrid, rest remote
• Language: Spanish and English

Skills:

The ideal consultant should have at least 10 years of experience with Java (v. 17 and/or 21)

Experience with Node JS, Hexagonal architecture, Solid principles, patterns design.

Experience in Cloud projects

Senior Software Engineer (Backend) — Onsite

A global leader in FinTech is building a brand-new Engineering team and is looking for experienced Senior Software Engineers (Backend) to join them. They’re hiring across all levels, including Senior Engineers, Staff Engineers, Principal Engineers, even Team Leads.

This is an opportunity to work on deeply technical, innovative solutions as part of a collaborative, distributed team. If you’re a skilled developer who thrives on building high quality systems and mentoring others, this could be the perfect role for you.

What You’ll Be Doing

• Taking ownership of platform services, contributing to the development and delivery of new products, and improving existing ones through automation.
• Leading projects from start to finish, collaborating with product and operations teams to ensure alignment.
• Supporting less experienced colleagues, helping them develop their skills while improving the overall effectiveness of the team.
• Tackling technical debt by maintaining legacy systems and proposing enhancements once you’re familiar with the workflows.
• Following a ‘You build it, you own it’ approach, taking full responsibility for the solutions you deliver, including their ongoing maintenance.

What They’re Looking For

• Extensive experience in developing complex systems, ideally using Python , though experience with other OOP languages is also valued.
• Clear and concise communication skills in English, both written and verbal, for working with a diverse team.
• Strong skills in managing services, designing standard APIs, implementing monitoring systems, and integrating external platforms.
• Confidence in working with legacy code, with a proactive attitude towards suggesting and implementing improvements.
• A commitment to writing quality code, supported by unit and integration tests. Experience with CI/CD pipelines (Jenkins) and infrastructure as code (Terraform) is an advantage.
• Experience of working within Financial Services on similar products is also an advantage

Why Join This Team?

• Be part of a company that’s leading innovation in FinTech, with exciting plans for 2025 and beyond.
• Help shape a brand new Engineering team, laying the groundwork for ongoing success.
• Join an internal group focused on building a supportive, equitable workplace within the Technology Team.

About the Role

This role is based onsite in either Madrid or Malaga , with a chance to work in a fast paced environment while being part of a global distributed team.

intro Consulting Ltd are proud to represent this forward thinking FinTech client. We act as their trusted recruitment partner, connecting top talent with meaningful opportunities.

Job Description:

• Java (8 and 11, deep understanding of java core) with Spring boot and Spring Batch and Spring Cloud Stream.
• Framework testing: Junit, Mockito, Postman
• BBDD: Oracle, PostgreSQL, Redis
• Continuous Integration: Git, GitHub, Jenkins, SonarQube
• Web applications Servers/containers: Websphere and Openshift,
• Fluent English (B2, C1)
• Microservices
• APIs (REST & SOAP & Open API; software design patterns)
• Kafka (Event Driven Architecture)

NOTE: No Sponsorship will be Provided for this role

With a team of about 10,000 employees in 60 cities across Europe, adesso is one of the leading IT providers in the German-speaking market.

For our office in adesso Spain, we are looking for a skilled Back-end Developer to join our international team — someone with strong problem-solving abilities and a proactive approach to client interactions.

You will be part of the client’s project development team, where your mission will be to design and deliver robust, secure, and scalable web applications.

Work Setup:

• Hybrid model: a mix of remote work and regular on-site presence at the client’s office in Barcelona.
• Occasional travel to Germany every 1–2 months .

What We’re Looking For:

• Deep knowledge of microservices architecture .
• Proficiency in Java and the Spring Framework (Spring Boot, Spring Security, Spring Data, Spring Cloud) as well as unit testing (JUnit, Mockito…).
• Knowledge of DevOps practices and cloud ecosystems (Docker, Kubernetes, AWS…).
• Experience working with Agile methodologies (Scrum, Kanban).
• Strong communication skills in English (German is a plus).

What We Offer:

• Competitive salary and a comprehensive benefits package, including private health insurance.
• Agile, lean organization with optimized processes.
• Participation in exciting international projects .
• A hybrid work model for greater flexibility.
• A structured individual development plan covering technical and soft-skill training, certifications, and language learning.

If you are a passionate Back-end Engineer ready to contribute to our global success, send us your application with your CV.

In compliance with the current regulations on the Protection of Personal Data, you are informed and, if you send us your CCVV, send us communications with your data or contact us with personal information, you consent to the processing of your data until you communicate otherwise by ADESSO SPAIN CONSULTORÍA Y SOLUCIONES TECNOLÓGICAS S.L.U., in order to participate in recruitment processes and HR management.

The legitimate basis of the treatment is the consent of the user and the pre-contractual relationship between the parties. The data provided are necessary in order to participate in any personnel selection procedure.

You may exercise your rights of access, rectification, deletion, opposition, limitation of processing, data portability and not to be subject to automated individualized decisions (including profiling), by sending a request with subject “Data Protection”, to the address: Avda. De la Vía Augusta, 85-87. 08174. Sant Cugat del Vallès, Barcelona, indicating in any case, the contact details and attaching a copy of your identity document. If you consider that your rights have been violated, you can file a complaint with our Data Protection Officer: Grupo Datcon Sur S.L.U. or with the Spanish Data Protection Agency (

Founded in 2012 by cyber-security experts Eduardo Cruz, Josep Gaspar, and Josh Gabel, Qustodio is the global leader in online safety and digital wellbeing for families. In 2022, Qustodio became part of the Qoria group , protecting every child's digital journey through a world-class collaboration between schools, parents, and educators in cyber safety. Qoria's mission is to support families and schools to live and navigate smarter in an increasingly connected world. Together, we help millions of families and educators across the globe protect children from online harm, while promoting healthy digital habits and awareness.

We are looking to incorporate to our team an experienced Backend Engineer that is motivated and passionate by solving cutting-edge Engineering challenges and automating QA processes, deployments and procedures.

If you:

• Have a relevant experience with Python and Django/Django Rest Framework
• Have knowledge on the Django ORM and its backends
• Have knowledge on NoSQL databases
• Have experience with Celery and know about it backends and brokers
• Are passionate on your code's quality
• Are oriented on good practices and thrive for improving your programming skills
• Apply software engineering fundamentals such SOLID, GRASP… principles in your daily work
• Uphold cybersecurity responsibilities, including secure coding practices, vulnerability assessment, and data protection.

and would be great if you:

• Have some previous experience with microservices
• Have designed hybrid SQL/NonSQL model schemas
• Have some previous experience with continuous integration and delivery/deployment pipelines
• Have work with kubernetes and its ecosystem
• Like to be up to date within the latest technologies in the industry

What we offer you:

• Exciting challenges in a fast-growing tech company where you can grow your skills and career.
• A strong team culture—we value collaboration, learning, and fun.
• A diverse workplace—our team includes professionals from 18+ nationalities.
• Flexible work environment—including remote work options.
• Competitive salary and private health insurance.
• Professional development opportunities—in-house training and team-building events.
• A great office in Barcelona—modern, fully equipped, and in the city center.

Perks and benefits include:

• Daily fruit and beverages
• Daily lunch catering
• 23 days of annual leave plus a half-day off on your birthday
• Flexible benefits package

At this stage we are only accepting applications from those with full working rights.

Shortlisting will commence immediately.

About Pepper Group Spain

Pepper Group Spain is investing in the development of a loan servicing platform and broader eco system with the aspiration to provide the modular elements of the platform to internal and third party customers on a SaaS basis.

About the role

The Backend Systems Developer is a key new appointment to Project Prism, who will work with the dedicated team to build the platform for both web and mobile access.

The Backend Systems Developer will be a can do, high achieving individual who will bring their product and domain expertise to the product, having experience of working with teams to build high quality enterprise level applications and have a passion for technology.

Location: Madrid

Main Responsibilities

• Development and maintenance of the new software platform.
• Design of a scalable and highly configurable cloud native solution targeting multiple geographic jurisdictions and asset types.
• Ensure all developments fit within the overall system architecture and design strategy, and make sure code is of a consistent and appropriate standard.
• Manage and maintain the company codebase using industry best practice to provide full audit and control capabilities.
• Work with all stakeholders to best prioritise system developments and deliver to agreed release schedules.
• Work closely with the test team to design and implement robust automatic testing in an agile fashion.
• Work as part of the Scrum team to analyse and estimate sprint items.
• Keep abreast with Testing best practices and new trends.

Your skills

• Excellent C# skills (WebAPI, ASP.NET Core), SQL Server, Azure SQL and NoSQL (CosmosDB) skills.
• Experience on API based systems: definition, implementation, and management.
• Good understanding of front-end technologies, specifically Angular and the supporting framework tools.
• Experienced in cloud-native applications (preferably Azure) with good understanding of modular design and asynchronous communication.
• Familiarity with IaaS, PaaS and IaC technologies – Kubernetes, Terraform, Ansible.
• Strong advocate of CI/CD principles familiar with the Azure DevOps stack.
• Competency in best practices and techniques – BDD, design patterns, SOLID principles, DDD.
• Experience in the Financial Services industry is desirable.
• Interest in Infrastructure Engineering is desirable.

Our benefits

• Private health insurance + dental program for all employees from 3rd month.
• Tax benefits in services such as day care, commuting cost, health, and food.
• Life insurance from day 1 for all employees.
• Flexible hybrid working model.
• Healthy snacks at the office.
• Wellness program with workshops and webinars.
• Team building activities such as Christmas, Summer event, Football team.
• Voluntary initiatives (Ningún Niño sin sonrisa, Ningún niño sin mochila, Fundación Aladina, Asociación Española Ayuda contra el Cancer, Fundación Prader Willi, Guillermo Prieto Ciclista, Bancos de Alimentos)

Pepper’s values and culture

Our mission is to help people succeed. Our clients, our customers, our employees. Our Values are ‘Can do’, ‘Balanced’ and ‘Real’.

Pepper Advantage’s values support our vision, shape our culture and define how we interact with other employees and the attitudes we adopt towards our customers and clients. The values of Pepper Advantage support the organisation’s mission statement.

Pepper Advantage’s unique outcome focused corporate culture aims to deliver fairness and value for clients and customers, consistently exceeding expectations in all measurable performance areas.

Pepper is an equal opportunities employer.

Role Profiles are subject to change in line with business needs.

Con un equipo de aproximadamente 10.000 profesionales en 60 ciudades de Europa, adesso es uno de los principales proveedores de servicios IT en el mercado de habla alemana.

Para nuestra oficina en adesso Spain , buscamos un Back-End Developer con experiencia en Java para incorporarse a un equipo internacional en proyectos de desarrollo de aplicaciones web robustas y escalables.

¿Qué valoramos?

• Experiencia con arquitecturas de microservicios.
• Dominio de Java y Spring (Spring Boot, Spring Security, Spring Data.).
• Buen nivel en testing (JUnit, Mockito) y prácticas de CI/CD.
• Familiaridad con metodologías ágiles (Scrum, Kanban).
• Capacidad para comunicarse eficazmente en inglés, en entornos técnicos internacionales.

¿Qué ofrecemos?

• Contrato indefinido con salario competitivo y seguro médico privado.
• Modelo híbrido de trabajo en Madrid (zona Paseo de la Castellana).
• Participación en proyectos internacionales.
• Organización ágil, con procesos de trabajo optimizados.
• Plan de desarrollo profesional personalizado: formación técnica, habilidades blandas, certificaciones y aprendizaje de idiomas.

Si te apasiona el desarrollo back-end y estás preparad@ para dar el siguiente paso en tu carrera, ¡queremos conocerte!

Únete a nuestro equipo en adesso Spain y forma parte de un entorno dinámico, innovador y en crecimiento.

In compliance with the current regulations on the Protection of Personal Data, you are informed and, if you send us your CCVV, send us communications with your data or contact us with personal information, you consent to the processing of your data until you communicate otherwise by ADESSO SPAIN CONSULTORÍA Y SOLUCIONES TECNOLÓGICAS S.L.U., in order to participate in recruitment processes and HR management.

The legitimate basis of the treatment is the consent of the user and the pre-contractual relationship between the parties. The data provided are necessary in order to participate in any personnel selection procedure.

You may exercise your rights of access, rectification, deletion, opposition, limitation of processing, data portability and not to be subject to automated individualized decisions (including profiling), by sending a request with subject “Data Protection”, to the address: Avda. De la Vía Augusta, 85-87. 08174. Sant Cugat del Vallès, Barcelona, indicating in any case, the contact details and attaching a copy of your identity document. If you consider that your rights have been violated, you can file a complaint with our Data Protection Officer: Grupo Datcon Sur S.L.U. or with the Spanish Data Protection Agency (

Location:  Remote (EU/US friendly time zones) | Full-time

At Alinia AI , we help enterprises in finance, insurance, and healthcare deploy generative AI safely and responsibly. Our platform provides alignment guardrails and compliance monitoring to ensure AI systems are trustworthy.

We’re hiring a Backend Engineer  to design and scale privacy-first backend systems, APIs, and services that meet enterprise-grade security and compliance standards.

What you’ll do:

• Build and maintain backend APIs and services.
• Implement security & privacy safeguards (SOC2, GDPR, ISO 42001).
• Support SaaS, VPC, and on-prem deployments.
• Collaborate across engineering, ML, and compliance teams.

What we’re looking for:

• 3–5+ years backend engineering experience.
• Strong Python (FastAPI/Flask/Django) + PostgreSQL.
• Cloud + Kubernetes/Docker.
• Data security expertise (encryption, IAM, logging).

Bonus: VPC/on-prem experience, regulated industries, gRPC/distributed systems.

Remote | Competitive comp + equity | High-impact role

To apply send your resume to