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Designs and leads Paymentus’s enterprise payments platform, defining scalable microservices, APIs, and data flows while mentoring engineers and translating business needs into technical solutions.
Builds and maintains data pipelines, ETL/ELT workflows, and a data warehouse to feed internal apps and analytics for a Polish energy-trading company.
Build and maintain banking apps for insurance and investment workflows using Java, Spring Boot, Angular, and cloud tools like AWS/Azure.
Lead DevOps Engineer designs, builds, and operates secure cloud microservices on Azure AKS/OpenShift, automating CI/CD pipelines and ensuring high availability for a central bank’s critical systems.
Builds and maintains Java 17+ microservices with Spring Boot and integrates them via SOAP/REST, while contributing Angular-based frontend components for a public-sector project.
Build and maintain high-performance .NET backend services for risk and portfolio management, using C#, ASP.NET Core, and Entity Framework, with optional Angular frontend work.
Build and run automated tests for backend, UI, and APIs, and help maintain CI/CD pipelines using Java/Kotlin and cloud tooling.
Builds and maintains Java-based systems for sales support, insurance, and billing in a client-facing outsourcing role.
Build and maintain a tax administration system using Java, Spring/Quarkus, Angular, and microservices, integrating with external systems and databases.
Senior Java developer building enterprise applications with JEE, Spring, Hibernate, and relational databases for a growing IT company in Zielona Góra.
Designs and maintains cloud-based data pipelines, ETL/ELT processes, and governance frameworks using GCP/AWS/Azure, SQL, Python, and Collibra to ensure secure, scalable, and well-documented data assets.
Develop and maintain a Java-based CRM backend, integrating SOAP APIs and Tomcat servers while troubleshooting and documenting work in Confluence.
Builds and maintains Java-based microservices and Angular frontends for a public-sector project, using Spring Boot, Docker, and CI/CD pipelines.
Build and maintain Java-based microservices and APIs for international clients using Spring Boot, PostgreSQL, Docker, and Kubernetes, while collaborating directly with clients in an Agile environment.
Build and maintain mission-critical backend microservices for a global investment bank using Java 11+, Spring Boot, Kafka, and Kubernetes in a cloud-native environment.
Build and maintain a tax-administration system in Java/Spring, integrating with external systems and deploying via Kubernetes; troubleshoot and optimize CI/CD pipelines.
Junior Java Developer builds and maintains sales-support, insurance, and billing systems using Java 17/21, REST/SOAP integrations, and databases.
Build and maintain enterprise Java backend services, integrating core systems like Guidewire and SAP using Spring Boot, Kafka, and Oracle/PostgreSQL.
Build and maintain a large-scale Terminal Management System for 300k+ payment terminals using Java, Spring, Hibernate, RabbitMQ, and distributed architectures.
Senior Java engineer building and maintaining core banking backend services, designing RESTful APIs, and integrating systems via Kafka and REST/SOAP in a regulated financial environment.
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