Senior Software Engineer (Java, TypeScript, React)

Ability to visit office in Rzeszów5+ years of professional Java development experienceStrong knowledge of Java 17+, Spring, and REST APIsSolid understanding of design patterns and clean architecture principlesHands-on experience with microservices, Docker, and KubernetesExperience with PostgreSQL and/or MySQLExperience with messaging systems such as Kafka, RabbitMQ, SQS, or similarCommercial experience with TypeScript and ReactStrong debugging, troubleshooting, and Linux command-line skillsUpper-Intermediate English level or higher We are looking for a skilled Software Engineer to join a team developing a cloud-native service orchestration platform (iPaaS). The product helps enterprise-level clients connect different systems and applications, automate workflows, and build API integrations using low-code tools, connectors, and distributed cloud services. Although the primary focus of the role is on back-end development, candidates are expected to have experience with TypeScript and React to be able to build complete features, covering both back-end and front-end components when necessary.We offer:Comfortable and fully equipped offices in RzeszówCompetitive compensation18 paid vacation days per year12 days of paid sick leave per year with certificate of incapacity for workEnglish, German, and Polish language coursesCorporate subscription to learning platforms, regular meetups and webinarsFriendly team that values accountability, innovation, teamwork, and customer satisfactionHealth & wellness support: either a monthly budget for medical insurance and sports activities, or a full medical insurance plan, depending on your cooperation model ,[Design and deliver new product features while enhancing and extending existing functionality to meet evolving customer needs , Contribute to the modernization of a cloud-native platform, helping drive architectural improvements and technology upgrades , Develop, maintain, and optimize scalable backend services using Java, Spring, and related technologies , Participate in architecture discussions and technical decision-making, helping shape the future direction of the product , Write clean, maintainable, and well-tested code with a strong focus on quality, performance, and reliability , Conduct code reviews, share best practices, and provide technical guidance to fellow engineers , Support production environments by investigating, troubleshooting, and resolving complex technical issues , Collaborate closely with QA, DevOps, Product Managers, and other stakeholders throughout the entire software development lifecycle , Take ownership of technical solutions and actively contribute to continuous improvement initiatives across the engineering team] Requirements: Java, Spring, JavaScript, TypeScript, REST, SOAP, NoSQL, Grafana, Helm Additionally: Free parking.