Senior Java Software Engineer (On-site)

About the role

AlvaCore Solutions is looking for an experienced Senior Java Developer Engineer (on-site) to help design, build and strengthen secure, reliable and long-lived software platforms. The role suits someone who goes beyond tickets, challenges weak designs, improves engineering standards and takes ownership of backend architecture, API design, security and production-ready delivery.

Key responsibilities

• Implement robust backend services with Java, Spring Boot, Spring Security and Hibernate/JPA
• Build clean REST APIs with DTOs, validation, error handling, versioning, idempotency and clear status models
• Work with authentication and identity integrations such as JWT, SAML2, Azure AD and ADFS
• Optimise PostgreSQL persistence layers, including transactions, constraints, indexes and performance-critical queries
• Contribute to Docker-based delivery, CI/CD pipelines, SonarQube quality gates and production readiness
• Review code, coach developers and help the team make better long-term technical decisions

Required profile

• Mandatory: minimum 6 years of hands-on professional Java engineering experience; academic study does not count
• Strong experience with Spring Boot and enterprise backend systems
• Solid knowledge of Spring Security, authentication, authorization and secure software design
• Deep practical experience with JPA/Hibernate, PostgreSQL and persistence design
• Experience with Docker, Jenkins, GitHub, Harbor or SonarQube
• Nice to have: regulated industry experience (banking, insurance, FinTech, HealthTech, public sector), OpenAPI, integration testing, cloud-native deployment, OpenShift or Helm

Required skills

• Backend: Java, Spring Boot, Spring Security, Hibernate/JPA, Maven
• Database: PostgreSQL
• Frontend collaboration: Angular, TypeScript, NPM
• DevOps and infrastructure: Docker, Jenkins, GitHub, Harbor, SonarQube
• Security and identity: JWT, SAML2, Azure AD, ADFS

Candidates apply through LinkedIn with their CV. The company offers a senior technical role on secure, business-critical systems in a focused engineering environment with ownership and direct communication.