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.
You will contribute to partner-facing platforms that allow banks, brokers, and financial advisors to offer Raisin deposit products to their customers. The team owns the full development lifecycle - from solution design and implementation to deployment and production support.
Responsibilities:
- 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.
Requirements:
- 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.
Nice to have:
- 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.
We offer*:
- 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
*not applicable for freelancers
Skills Required
- 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
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
