{"id":2112383,"url":"https://alion.io/job/teems-it-senior-backend-developer","title":"Senior Backend Developer","company":{"id":3913597,"name":"teems.it","domain":"teems.it","url":"https://alion.io/company/teems-it","size_band":null,"is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Kraków, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":18500,"max":21500,"currency":"PLN","period":"month","gross":null,"usd_annual":66000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"JavaScript","optional":false},{"name":"Kanban","optional":false},{"name":"Kotlin","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"TypeScript","optional":false},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"ElasticSearch","optional":true},{"name":"Java","optional":true},{"name":"Vue.js","optional":true}],"status":"live","first_seen_at":"2026-10-02T12:47:51Z","employer_posted_date":null,"last_verified_at":"2026-10-02T12:47:51Z","board_verified":false,"closed_at":null,"days_open":15,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":15},"description":"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.\nWe 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.\nBeyond a transparent business environment, we offer:\nPrivate medical care\nIndividual training budget\nEducational and development initiatives\nInternal workshops in Krakow 2-3 times a year (travel and accommodation costs covered)\nOption to work from the office\nTeam integrations and training-integration trips\nCommitment to the highest project management standards\nZakres obowiązków\nDevelop and maintain high-quality backend services and REST APIs using Kotlin and Spring Boot\nDesign and optimize performant data models with MongoDB\nTake end-to-end responsibility for services, ensuring high availability and performance, supporting API integration and frontend tasks.\nActively engage in cross-team collaboration, participate in code reviews, and share knowledge to elevate the team's technical standards\nWork in a remote-first, agile environment (Scrum or Kanban) focused on collaboration and high impact.\nWymagania\nMust-have:\n\n6+ years of professional software development experience.\nStrong proficiency in Kotlin or Java with the Spring Boot framework.\nSolid experience with MongoDB or other NoSQL databases.\nPractical experience with JavaScript or TypeScript is required to support the full product development process and manage cross-stack dependencies.\nProficiency with Docker, containerization, and modern CI/CD pipelines.\nOpenness to utilizing AI tools to enhance productivity and a drive to quickly adapt to new technological trends.\nA proactive, ownership-driven mindset with a commitment to continuous learning and sharing knowledge within the team.\nExcellent English skills (minimum B2+) with the ability to communicate technical 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