We're looking for a Senior Java Developer (with Python skills) to join our team in Spain in a remote working mode. In this role, you will design, develop, and maintain highly scalable backend applications using Java and Python/Django, working across the full software development lifecycle from requirements analysis to production deployment.You will contribute to business-critical financial platforms for a leading global financial market infrastructure provider, collaborate closely with architects, product owners, and security specialists, and help ensure adherence to secure coding practices and modern development standards.ResponsibilitiesDesign, develop, and maintain Java-based backend services and RESTful APIs using Spring BootImplement and enhance Python/Django components as part of integrated solutionsParticipate in requirements analysis, solution design, and technical planningEnsure robust database interaction leveraging relational databases (PostgreSQL, MySQL), including schema design and query optimizationFollow clean code practices and object-oriented design principles to deliver maintainable, production-ready codeWrite unit and integration tests using JUnit, Mockito or equivalent frameworksPerform peer code reviews, ensure code quality and adherence to standardsSupport CI/CD practices via GitLab pipelines and modern DevOps workflowsConfigure application observability via monitoring and logging tools (Datadog or similar)Ensure compliance with secure development best practices, including OWASP guidelinesCollaborate with cross-functional teams and contribute to end-to-end delivery, including release support and defect resolutionRequirements5+ years of professional software development experience, with Java backend expertise (Java 17+, Spring Boot, Spring Data JPA/Hibernate)Practical knowledge of Python and Django frameworksExperience designing scalable backend services and REST API architecturesProficiency with SQL and relational databases, including schema management and performance tuningDeep knowledge of clean code principles, OOP design patterns and maintainable architectureHands-on experience with CI/CD (Git, GitLab) and collaborative workflowsFamiliarity with monitoring, logging and observability frameworks (e.g., Datadog)Knowledge of secure coding standards including authentication and authorization frameworks (OAuth2, JWT, SSO)Strong analytical mindset and ability to troubleshoot complex problemsEnglish proficiency at B2 level or higherNice to haveExperience with cloud platforms (AWS or Azure)Knowledge of containerization/orchestration tools (Docker, Kubernetes)Familiarity with microservices architecture and event-driven systems (Kafka, RabbitMQ)Exposure to static code analysis and vulnerability scanning tools (SonarQube, BlackDuck, Trivy)Experience in system design, technical leadership or mentoring rolesAwareness of cybersecurity standards, HTTP fundamentals and networking conceptsWe offerPrivate health insuranceEPAM Employees Stock Purchase Plan100% paid sick leaveReferral ProgramProfessional certificationLanguage coursesEPAM is a leading digital transformation services and product engineering company with 61,700+ EPAMers in 55+ countries and regions. Since 1993, our multidisciplinary teams have been helping make the future real for our clients and communities around the world. In 2018, we opened an office in Spain that quickly grew to over 1,450 EPAMers distributed between the offices in Málaga, Madrid and Cáceres as well as remotely across the country. Here you will collaborate with multinational teams, contribute to numerous innovative projects, and have an opportunity to learn and grow continuously.Why Join EPAMWORK AND LIFE BALANCE. Enjoy more of your personal time with flexible work options, 24 working days of annual leave and paid time off for numerous public holidays.CONTINUOUS LEARNING CULTURE. Craft your personal Career Development Plan to align with your learning objectives. Take advantage of internal training, mentorship, sponsored certifications and LinkedIn courses.CLEAR AND DIFFERENT CAREER PATHS. Grow in engineering or managerial direction to become a People Manager, in-depth technical specialist, Solution Architect, or Project/Delivery Manager.STRONG PROFESSIONAL COMMUNITY. Join a global EPAM community of highly skilled experts and connect with them to solve challenges, exchange ideas, share expertise and make friends.