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. Responsibilities Design develop and maintain Java-based backend services and RESTful APIs using Spring Boot Implement and enhance Python/Django components as part of integrated solutions Participate in requirements analysis solution design and technical planning Ensure robust database interaction leveraging relational databases (PostgreSQL MySQL) including schema design and query optimization Follow clean code practices and object-oriented design principles to deliver maintainable production-ready code Write unit and integration tests using JUnit Mockito or equivalent frameworks Perform peer code reviews ensure code quality and adherence to standards Support CI/CD practices via GitLab pipelines and modern DevOps workflows Configure application observability via monitoring and logging tools (Datadog or similar) Ensure compliance with secure development best practices including OWASP guidelines Collaborate with cross-functional teams and contribute to end-to-end delivery including release support and defect resolution Requirements 5+ years of professional software development experience with Java backend expertise (Java 17+ Spring Boot Spring Data JPA/Hibernate) Practical knowledge of Python and Django frameworks Experience designing scalable backend services and REST API architectures Proficiency with SQL and relational databases including schema management and performance tuning Deep knowledge of clean code principles OOP design patterns and maintainable architecture Hands-on experience with CI/CD (Git GitLab) and collaborative workflows Familiarity 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 problems English proficiency at B2 level or higher Nice to have Experience 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 roles Awareness of cybersecurity standards HTTP fundamentals and networking concepts We offer Private health insurance EPAM Employees Stock Purchase Plan 100% paid sick leave Referral Program Professional certification Language courses EPAM is a leading digital transformation services and product engineering company with 61700+ 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 1450 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 EPAM WORK 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.