Senior Backend Developer

O projekcie: teems.it is a growing IT company delivering solutions that have a real impact on the development of the European technology market. We are committed to ensuring our applications meet the highest quality standards, focusing on usability, modern technology, and transparency in everything we do. We offer participation in stable international projects in a remote-first model, with the option to work from a modern office located in the heart of Krakow. Beyond a transparent business environment, we offer: - Private medical care- Individual training budget- Educational and development initiatives- Internal workshops in Krakow 2-3 times a year (travel and accommodation costs covered)- Option to work from the office- Team integrations and training-integration trips- Commitment to the highest project management standards Wymagania: Must-have: - 6+ years of professional software development experience.- Strong proficiency in Kotlin or Java with the Spring Boot framework.- Solid experience with MongoDB or other NoSQL databases.- Practical experience with JavaScript or TypeScript is required to support the full product development process and manage cross-stack dependencies.- Proficiency with Docker, containerization, and modern CI/CD pipelines.- Openness to utilizing AI tools to enhance productivity and a drive to quickly adapt to new technological trends.- A proactive, ownership-driven mindset with a commitment to continuous learning and sharing knowledge within the team.- Excellent English skills (minimum B2+) with the ability to communicate technical concepts and interpersonal perceptions clearly. Nice-to-have: - Experience with event-driven architectures and Apache Kafka.- Practical knowledge of cloud computing (e.g. Azure, AWS).- Experience with Vue.js.- Familiarity with SOLR or ElasticSearch.- Experience with high-availability, customer-facing systems. - Experience with e-commerce platforms Codzienne zadania: - Develop and maintain high-quality backend services and REST APIs using Kotlin and Spring Boot - Design and optimize performant data models with MongoDB - Take end-to-end responsibility for services, ensuring high availability and performance, supporting API integration and frontend tasks. - Actively engage in cross-team collaboration, participate in code reviews, and share knowledge to elevate the team's technical standards - Work in a remote-first, agile environment (Scrum or Kanban) focused on collaboration and high impact.