We are looking for a skilled Senior Engineer to join our growing tech hub in Milan. As a global leader in AI-driven solutions for fintech, we are excited to expand our team and invite passionate software engineers to help shape the future of payments. At Klarna, you’ll work on innovative technologies that impact millions of users worldwide, redefining the future of shopping and payments. This is an opportunity to be part of a dynamic team in an agile, growth-driven environment.

Key Responsibilities

• Technical Leadership: Lead complex, high-impact initiatives, making independent strategic decisions and guiding the technical direction for key projects.
• Mentorship: Mentor mid-level and junior engineers, sharing best practices, reviewing code, and contributing to a culture of continuous improvement and innovation.
• Backend/Frontend Development: Utilize your deep expertise in software engineering to develop robust backend or frontend systems that support Klarna's AI-driven solutions.
• Collaboration: Work closely with other engineers, product teams, and stakeholders in a highly collaborative, transparent environment.
• System Design & Integration: Lead the design and development of scalable, high-performance systems, ensuring system integration across multiple platforms.
  
  

Required Experience And Skills

• Java Expertise: Strong experience with Java and the Spring Framework (Spring Boot, Spring MVC), Hibernate, or JPA for ORM.
• Cloud & Microservices: Experience with AWS cloud infrastructure and microservices architecture, ensuring scalability and robust system integration.
• Testing Skills: Proficiency with JUnit, Mockito, and other testing tools for unit and integration testing.
• Containerization & CI/CD: Hands-on experience with Docker, containerization technologies, and CI/CD pipeline tools like Jenkins or GitLab.
• Database Management: Strong SQL skills with hands-on experience in relational databases and solid experience with microservices architecture.
• Leadership & Collaboration: Proven ability to lead technical initiatives, mentor junior engineers, and collaborate in an agile, growth-focused environment.
  
  

Desirable Skills

• Java Version 17+ and experience with Spring Security or other modern Java frameworks.
• NoSQL Databases & Performance Tuning: Familiarity with NoSQL databases, PostgreSQL, and performance optimization techniques.
• Kubernetes & DevOps: Exposure to Kubernetes, CI/CD best practices, Terraform, CDK, and monitoring/logging tools like Prometheus, Datadog, and Sentry.
• Distributed Systems & Security: Understanding of distributed systems, high-availability design patterns, event-driven architecture (e.g., Kafka, RabbitMQ), and security best practices for Java applications.
• API Development: Knowledge of API design and development (RESTful or GraphQL) and experience with authentication protocols like OAuth 2.0, OpenID Connect, and JWT.
  
  

Benefits

• Competitive salary and benefits
• Opportunities for career growth and leadership within a rapidly growing global company
• Collaborative and innovative work environment
• Access to the latest tech to solve real-world challenges and impact millions globally
  
  

This role is perfect for someone with deep technical expertise, a passion for fintech, and a desire to work on impactful projects in an innovative, fast-paced environment.

Skills: prometheus,java,datadog,microservices,hibernate,sql,junit,kubernetes,spring framework,engineers,architecture,aws,rabbitmq,oauth 2.0,kafka,jwt,openid connect,nosql,docker,mockito,ci/cd,postgresql,terraform