Senior Backend Engineer (Java)

We are looking for a Senior Backend Software Engineer to join the B2B Portals Team working with Raisin, a fintech company operating a digital savings and investment marketplace. The role involves developing backend services using Java and Spring Boot, contributing to partner-facing platforms, and owning the full development lifecycle.

• Develop and maintain backend services using Java and Spring Boot
• Deliver features from technical design to production rollout
• Build APIs and integrations for banks and other B2B partners
• Write unit, integration, and contract tests
• Investigate production issues using logs, metrics, and traces
• Conduct code reviews and contribute to engineering standards
• Improve service performance, security, and reliability
• Participate in the team’s on-call rotation
• Mentor engineers and support knowledge sharing
• Promote the effective and safe use of AI-assisted development tools
• Collaborate with distributed teams and stakeholders across Europe and the US

• 5+ years of commercial Java development experience
• Strong knowledge of Java, Spring Boot, and Spring Data
• Experience with AWS and cloud-based applications
• Experience with REST APIs, distributed systems, and service integrations
• Knowledge of relational databases, preferably MySQL
• Experience with asynchronous messaging, particularly Amazon SQS
• Strong testing skills with JUnit and Testcontainers
• Experience with CI/CD, Docker, and Kubernetes
• Ability to independently own and deliver backend features
• Experience debugging production systems
• Mentoring and code review experience
• Fluent English
• Experience with fintech or banking integrations
• Knowledge of Pact contract testing
• Experience with Apache Kafka or Amazon MSK
• Experience with event-driven systems
• Experience with OpenTelemetry, Datadog, or Splunk
• Familiarity with GitLab CI/CD, Harness, Amazon EKS, or Airflow
• Experience with multi-tenant B2B platforms
• Practical experience with AI-assisted development tools

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits