Senior Backend Developer (Payments/Cash Management)

Be a part of Stefanini!

At Stefanini we are more than 30,000 geniuses, connected from more than 40 countries, we co-create a better future.

Apply Senior Backend Developer!

Requirements

• Bachelor’s degree in Systems Engineering, Computer Science, Electronic Engineering, or related fields.
• 5+ years in backend/API engineering; proven domain experience in Payments or Cash Management.
• Strong expertise with Java (Spring Boot) and Python (FastAPI).
• Hands-on experience with Kafka, schema registries, PostgreSQL, Redis.
• Deep understanding of OAuth 2.1, OIDC, mTLS, and enterprise secret management.
• Experience with Kubernetes (AKS), service mesh, Terraform, GitOps (ArgoCD). Familiarity with Datadog AI/Dynatrace and AI-assisted observability.

Looking to advance your Development & Programming career with relocation support? Explore Development & Programming Jobs with Relocation Packages that include comprehensive packages to help you move and settle in your new role.

• Experience with regulatory frameworks: PSD2, GDPR, DORA
• Experience in LLMOps, prompt engineering, and enterprise AI governance
• Preferred qualifications: vector databases, RAG, LangChain or equivalent frameworks, confluent platform and schema evolution best practices
• Proficiency in English and Spanish

Essential Duties and Responsibilities:

• Design, develop, and maintain scalable backend services and APIs
• Architect AI-native integrations within enterprise systems
• Ensure secure authentication and authorization mechanisms aligned with enterprise standards
• Implement event-driven architectures using Kafka and modern data streaming practices
• Deploy and manage containerized applications using Kubernetes (AKS)
• Apply Infrastructure as Code (Terraform) and GitOps best practices

Discover our full range of relocation jobs with comprehensive support packages to help you relocate and settle in your new location.

• Collaborate with cross-functional teams to ensure regulatory compliance (PSD2, GDPR, DORA)
• Monitor and optimize system performance using AI-assisted observability tools
• Contribute to AI integration strategies including RAG pipelines, vector databases, and LLM-based solutions

What’s in for you?

• Sponsorship under the Highly Qualified Professional Visa
• Full logistical support throughout the relocation process (Malaga, Spain)
• USD Payments
• Company Equipment
• Personnel Days
• Multicultural experience
• Path Career
• Mentoring/Learning Platforms