About the role

We are looking for a talented Senior Backend Engineer to join our innovative FinTech team in Madrid. In this Full-time, on-site position, you will be responsible for designing, developing, and maintaining robust payment processing systems that handle millions of transactions daily. You'll work with cutting-edge technologies and collaborate with cross-functional teams to deliver scalable solutions that power the future of digital finance.

Who are we looking for

We seek an experienced backend engineer with a strong track record in building high-performance systems. You should have deep expertise in distributed systems, microservices architecture, and payment processing platforms. The ideal candidate is a problem-solver who thrives in fast-paced environments, mentors junior developers, and demonstrates leadership qualities. You must be passionate about clean code, security best practices, and continuous improvement. Strong communication skills in Spanish and English are essential for this role.

Skills and competencies

8+ years of professional backend development experience
Expert-level proficiency in Java, Python, or Go
Deep understanding of microservices architecture and distributed systems
Experience with payment gateways and financial transaction systems
Proficiency in SQL and NoSQL databases (PostgreSQL, MongoDB, Redis)
Strong knowledge of API design, REST, and gRPC protocols
Experience with Docker, Kubernetes, and cloud platforms (AWS, Azure, GCP)
Expertise in CI/CD pipelines and DevOps practices
Knowledge of security protocols, encryption, and PCI DSS compliance
Excellent problem-solving abilities and attention to detail
Proven mentoring and leadership experience
Fluent in Spanish and English

What we offer

Competitive salary package with performance-based bonuses
Comprehensive health insurance and wellness programs
Flexible working hours with a modern on-site facility in Madrid
Professional development and training budget (€2,000/year)
Career advancement opportunities in a rapidly growing company
Collaborative culture with international team members
Modern tech stack and cutting-edge tools
Quarterly team building events and social activities

Contract details

This is a Full-time, permanent position based on-site in our Madrid office. We are looking for immediate starters or candidates available within two weeks. The role offers a dynamic work environment with opportunities for technical leadership and innovation in the financial technology sector.

Senior Backend Engineer - Payment Systems

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