Role Description We are looking for an experienced Senior Software Engineer who specializes in company-wide cross-cutting topics and acts as a technical expert for cross-thematic software components. In this role, you will develop core services and frameworks used across all development teams. You will collaborate closely with cross-functional teams to continuously enhance our platform and deliver high-performance, scalable, and efficient solutions. Your deep expertise in various software architectures will contribute to driving technical excellence throughout the organization. This role can be carried out either in a hybrid model at our Munich Headquarter or fully remotely, assuming residency in Leipzig. - Take ownership of the entire software development lifecycle, from requirements analysis and architecture to design, implementation, and deployment. - Analyze, evolve, and transform existing design patterns. - Design of composite high-level APIs to standardize these services for customers. - Selection and introduction of suitable patterns for complex business processes. - Collaborate closely with Quality and Operations Engineers to ensure the highest software standards. - Perform root cause analysis and performance tuning to identify and resolve bottlenecks. Qualifications - At least 5 years of professional experience in Java development (Java 11+). - Sound knowledge of Spring Framework (Boot, Security, Cloud). - Expertise in microservices architectures and event-driven design. - Extensive experience in CI/CD pipelines, Docker and Kubernetes, and Linux environments. - Knowledge of database design (SQL/NoSQL: PostgreSQL, Redis). - Experience in developing and maintaining centralized authorization services (OAuth 2.0, OpenID Connect, JWT). - Proficiency with message brokers (Apache Kafka, ActiveMQ Artemis). - Skilled in API design and management (OpenAPI, Swagger, Postman). - Familiarity with monitoring and observability tools (Prometheus, Grafana, ELK Stack). - Experience with build tools (Maven, Gradle) and version control (Git). - Scripting skills (Bash, Python) for automation tasks. - Very good written and spoken German and English skills. Benefits - Mobile working and flexible working time. - Collaborative, diverse company culture and superior team spirit. - Flat hierarchies and great feedback culture. - Development opportunities & career perspective. - International business & cross-site collaboration. - Modern, dog-friendly offices with nice amenities. - Company-paid health insurance, public transportation, lunch vouchers, and further benefits. Company Description Retarus is a worldwide provider of cloud-based messaging solutions at enterprise scale. We serve over 40% of the companies listed on the S&P Global 100, e.g., Adidas, Bayer, SAP, BNP Paribas, Goldman Sachs, T-Systems, Swarovski, and UPS, as well as governmental agencies and major players in markets across the world. Privately owned and founder-managed for over thirty years, Retarus is customer-oriented, stable, a fair employer, and a strategic business partner with a long-term vision. With some 500 employees in 19 offices on four continents, Retarus operates locally and thinks globally: our teams are organized across borders and are highly integrated. This makes Retarus a multicultural, multilingual, and engaging workplace. We are committed to creating a diverse and dynamic environment for our employees, with generous compensation, time off, and a global, collaborative workplace.

• Build integrations with healthcare and financial systems • Automate end-to-end data ingestion and delivery pipelines, with a strong focus on observability and data quality • Build GenAI features and chat to solve real problems and build user confidence, backed by rigorous evaluation loops and guardrails • Design high-throughput, low-latency systems where performance is a mission-critical requirement • Be the glue between our PhD-level Data Scientists and Front-end Engineers, taking raw outputs and building the APIs that drive a full, impactful product

Role Description RIVA Solutions is seeking a Senior Software Engineer (Java/Cloud) who is a hands-on senior engineer, not a purely feature-focused developer. This role requires deep technical expertise, strong system design instincts, and direct ownership of production systems. - The ideal candidate has experience building, deploying, and supporting complex applications in live environments. - Comfortable being accountable for system behavior after release. - Enjoys owning systems end-to-end, including deployment support, troubleshooting production issues, addressing technical debt, and improving operational reliability. - Collaborates closely with product managers, architects, and DevOps teams to bridge legacy systems and modern cloud-based solutions while ensuring code quality, scalability, and system stability. Core Responsibilities - Design, develop, and maintain high-quality Java-based applications with a strong focus on scalability, reliability, and performance. - Take hands-on ownership of production systems, including supporting deployments, troubleshooting production issues, and resolving incidents. - Lead full-stack development efforts across backend services and front-end integrations, with a backend-leaning focus. - Architect and implement services using Java 20+, Spring Boot/Core/Cloud and Hibernate/JPA to build maintainable, testable, high-performing services. - Design and optimize data access layers using Hibernate (JPA) and advanced SQL; support Oracle today while contributing to future migration efforts to PostgreSQL. - Troubleshoot and remediate production performance issues across the stack (API, ORM, database), including Hibernate query tuning, indexing, and SQL optimization. - Design and implement secure, scalable RESTful APIs. - Participate directly in CI/CD pipeline troubleshooting, deployment support, and release validation using GitLab and SonarQube. - Manage build automation and dependency management using Maven. - Implement and enforce testing strategies using TDD and BDD, leveraging JUnit, Mockito, Cucumber, and Spock. - Build accessibility considerations into application design and implementation, ensuring compliance with Section 508 standards. - Support containerized and serverless workloads in AWS, including ECS, Fargate, and Kubernetes. - Collaborate with DevOps teams to understand, maintain, and troubleshoot Infrastructure as Code (Terraform or similar tools). - Make informed architectural trade-offs related to performance, scalability, maintainability, and operational risk. - Conduct code reviews, mentor other developers, and uphold engineering best practices. - Ensure system uptime, performance, and stability across development, test, and production environments. Qualifications - Bachelor’s degree (BA/BS) and 10+ years of experience, or Master’s degree (MA/MS) and 8+ years of experience in software development. - Extensive hands-on experience with Java 20+ and object-oriented design principles. - Strong expertise with Oracle databases and advanced SQL, with hands-on PostgreSQL experience. - Deep knowledge of the Spring ecosystem (Spring Boot, Spring Core, Spring Cloud) and Hibernate/JPA for ORM-based enterprise applications. - Proven experience designing and maintaining enterprise persistence layers using Hibernate/JPA. - Proven experience designing and supporting distributed systems and service-based architecture. - Demonstrated ownership of production systems, including post-deployment support. - Experience troubleshooting CI/CD pipelines and deployment issues. - Proficiency with Git and modern branching and release strategies. - Experience working in Agile development environments. - Strong communication skills and ability to collaborate across technical and non-technical teams. - Ability to obtain and maintain a High-Level Public Trust clearance. Preferred Qualifications - Experience with Angular or similar front-end frameworks. - Experience supporting database modernization efforts, including Oracle-to-PostgreSQL migrations. - Strong experience with AWS cloud services, particularly containerized and serverless workloads. - Hands-on experience with Terraform or similar infrastructure-as-code tools. - Prior experience supporting USPTO or other federal systems. - Experience serving as a senior engineer on complex, long-lived, product-centric platforms. - Exposure to performance tuning, production monitoring, and system observability. Preferred Certifications - AWS Certified Cloud Practitioner. - AWS Certified Solutions Architect. - AWS Certified Developer. Salary Up to $150,000 per year, based on experience. Benefits - Paid Time Off / Sick Leave. - Health, Dental, and Vision Coverage. - Life Insurance. - Retirement Benefits / 401K with company matching. - HSA/FSA Spending Accounts. - Long- and Short-term Disability. - Pet Insurance. - Wellness Program Initiatives. - RIVA Flex. Equal Opportunity Statement RIVA Solutions is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any protected class. If you need a reasonable accommodation to search for a job opening or to submit an online application, please email accommodations@rivasolutionsinc.com. Only messages left for this purpose will be returned.

• Manage a small team of highly motivated developers and Systems Analysts • Evaluate and respond to customer needs in a fashion that provides long-term benefit to WEX by finding strategic solutions to issues and driving that forward. • Resolve customer reported issues; take ownership of the support process and collaborate on best solutions • Become product domain expert and develop techniques to help team members gain expertise • Contribute to the development and maintenance of the application architecture • Analyze, design, program, debug and modify software enhancements and/or new products