Sr Software Engineer • Ledger

PayPal PayPal · Fintech · Stockholm, Stockholm County, Sweden · Software Engineering

Senior Backend Software Engineer role on the Ledger team at PayPal, focusing on designing and implementing scalable backend systems, optimizing performance and reliability, and collaborating with cross-functional teams. Requires advanced proficiency in Java, Spring, Hibernate, RESTful services, and cloud platforms.

What you'd actually do

  1. Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles.
  2. Advises immediate management on project-level issues
  3. Guides junior engineers
  4. Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices
  5. Applies knowledge of technical best practices in making decisions

Skills

Required

  • 3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience.
  • Advanced proficiency in Java, with strong expertise in core concepts, design patterns, and optimization techniques.
  • Extensive hands-on experience with Java frameworks like Spring (Spring Boot, Spring MVC) and Hibernate, building scalable and maintainable solutions.
  • Proven experience in designing and implementing high-performance RESTful services, focusing on scalability, reliability, and performance in production environments.
  • Strong ability to collaborate with cross-functional teams, contributing to technical leadership through code reviews, design discussions, and mentoring junior engineers.
  • Deep knowledge of cloud platforms (AWS, GCP, Azure), utilizing them to deliver cost-effective and scalable solutions.
  • Expert understanding of both relational and NoSQL databases, with hands-on experience in ORM tools like Hibernate to ensure efficient data handling and performance tuning.

Nice to have

  • Experience with large-scale, high-performance systems.
  • Knowledge of the payment processing industry and relevant regulations.
  • Contributions to open-source projects.
  • Familiarity with microservices architecture and containerization.