Senior Java Developer

Experience Required
● 5–8+ years of professional Java development experience● Minimum 3 years working with Spring Framework in production (both classic Spring MVC and Spring Boot)● Experience maintaining legacy enterprise Java applications alongside modern microservices is a strong plus
Core Responsibilities
● Maintain and extend a Java 21 / Spring 6.2.x MVC / Hibernate 6.6.x order fulfillment backend for visa, passport, and travel document services (not Spring Boot — manually configured, WARdeployed to Tomcat)● Design, build, and support Spring Boot microservices that integrate with other platform services● Work across two parallel data-access stacks in the platform: a legacy precompiled framework and a modern JPA/Hibernate stack — both operating on shared database tables● Develop and maintain JSP/Servlet views alongside newer Spring MVC views, plus supporting jQuery/JavaScript● Write and manage Flyway database migrations (MySQL/MariaDB) across multi-country/multidomain deployment configurations● Implement and troubleshoot audit trails (Javers), authentication/SSO (SAML via OneLogin, JWT), and authorization/IDOR protections across orders, payments, debtors, and documents● Support payment processor integrations with correct handling of PCI-sensitive data and financial precision (BigDecimal)● Generate reports and PDFs via JasperReports and iTextPDF● Build, containerize, and deploy services using Docker, front them with Nginx, and operate them on Linux servers● Maintain and extend Jenkins CI/CD pipelines (Groovy pipeline scripts) for build, test, and deployment automation, including ad-hoc Flyway migration pipelines● Collaborate with QA/DevOps to troubleshoot production issues across the monolith and microservices, including cross-service data consistency (orders, milestones, billing)
Required Technical SkillsLanguages & Core● Java 17/21 (strong OOP, collections, concurrency fundamentals)● SQL (MySQL/MariaDB), schema design, query optimization
Frameworks● Spring Framework 6.x (Core, MVC, Data JPA, TX, AOP) in a non-Boot, manually configured setup● Spring Boot 3.x for microservices development (REST APIs, auto-configuration, embedded Tomcat)● Hibernate/JPA 6.x (entity mapping, inheritance strategies, lazy loading pitfalls)● JSP, JSTL, Servlets (legacy web tier)
Data & Migrations● Flyway (versioned and repeatable migrations, multi-environment strategy)
Security & Integration● SAML SSO (OneLogin or equivalent), JWT-based authentication● REST API design; exposure to SOAP/WSDL a plus● Awareness of OWASP Top 10, especially IDOR/access-control issues in multi-tenant order/billing data
Reporting● JasperReports and/or iTextPDF (report/PDF generation experience)Frontend (supporting, not primary)● jQuery / vanilla JavaScript● Exposure to a modern frontend (React) is a plus, as some admin tooling is React-based
Build & Tooling● Gradle (multi-project builds, custom tasks/plugins)● Git
DevOps / Infrastructure● Docker (building/running containers, multi-service compose setups)● Nginx (reverse proxy/routing configuration)● Linux (comfortable administering/debugging services on Linux servers)● Jenkins (writing/maintaining Groovy pipeline scripts, CI/CD for build+deploy)
Nice to Have● Prior experience in travel, visa/passport processing, fintech, or order-management domains● Experience with audit/versioning libraries (e.g., Javers) or similar change-tracking systems● Exposure to Joda-Time and date/timezone handling across multi-country deployments● Familiarity with microservice patterns: service-to-service communication, eventual consistency, distributed transactions across a monolith + microservices boundary
Soft Skills / Working Style● Comfortable navigating and safely modifying a large legacy codebase without full documentation — must exercise judgment on what's safe to change vs. what's tribal-knowledge-dependent● Strong attention to financial and PII data handling given the sensitive nature of orders, payments, and travel documents● Ability to work across both monolith maintenance and new microservice development without forcingone architectural style onto the othe

Department: Technology & Innovation
Experience: 5 To 8 Years
Posted: 2026-08-14T09:27:26.457Z