Java Developer

Andersen is hiring a Java Developer for a project developing a digital banking SuperApp and delivering secure, scalable banking services, payment processing, and seamless system integrations. The customer is a prominent financial institution, offering a wide range of services to individuals and businesses. With a focus on digital transformation, the company leverages advanced technologies to enhance efficiency, security, and customer experience. It invests in modern infrastructure, including cloud solutions, data centers, and cybersecurity measures, to support its growing operations and meet client needs. The project is focused on developing and enhancing a digital banking SuperApp that integrates mobile applications, backend services, banking products, and external systems. It includes delivering secure banking and payment functionality, ensuring reliable transaction processing and data exchange, and supporting the full software development lifecycle to provide a seamless and scalable digital banking experience.

Responsibilities: - Independently developing, delivering, and supporting end-to-end banking backend workflows using Java, taking ownership beyond individual development tasks. - Tracing customer transactions across multiple backend services to analyze data flows, dependencies, and system behavior. - Investigating and reproducing production incidents using application logs and database state to identify root causes. - Implementing, testing, and safely deploying fixes to production, ensuring system stability and minimizing release risks.

Requirements: - Commercial Java development experience for 2+ years. - Hands-on experience in FinTech, banking, or payments, including production backend systems. - Experience with banking workflows such as customer registration and verification, cards, transfers, loans, deposits, or currency exchange. - Experience integrating external systems, such as core banking, card processing, payment networks, or other external services. - Familiarity with secure banking flows such as OTP, authentication, transaction signing, and biometric verification, including their behavior under load and in failure scenarios. - Good knowledge of Java 17+, Spring Boot 3, Spring MVC, Spring Data JPA, Hibernate, and Spring Security. - Experience with REST APIs, SOAP, OAuth2/OIDC, and JWT. - Experience with Kafka or other messaging systems; understanding of idempotency, retries, and error handling. - Good knowledge of PostgreSQL and SQL, including transactions and query optimization. - Familiarity with microservices architecture and Camunda BPMN. - Experience with Docker, Git, Maven, and CI/CD; basic knowledge of Kubernetes/OpenShift. - Experience with application logging, monitoring, debugging, and production issue investigation. - Experience with unit and integration testing using JUnit 5 and Mockito. - Level of English – Intermediate and above.

Nice to have: - Familiarity with GraphQL, Resilience4j, mTLS, X.509 certificates, or hexagonal architecture. - Experience with Testcontainers and production monitoring tools such as ELK and Prometheus. - Experience extending vendor-based banking platforms. - Knowledge of Uzbek.

Compensation: 980–2600 EUR per month.