{"id":1116401,"url":"https://alion.io/job/winged-it-senior-backend-fullstack-developer","title":"Senior Backend / Fullstack Developer","company":{"id":1756,"name":"Winged IT","domain":"wingedit.pl","url":"https://alion.io/company/winged-it","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Traffit","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Poland"],"countries":["PL"],"hiring_countries":["DE","PL"],"hiring_countries_total":2,"salary":{"min":160,"max":180,"currency":"PLN","period":"hour","gross":null,"usd_annual":94000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"JavaScript","optional":false},{"name":"Kotlin","optional":false},{"name":"GDPR","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-22T11:03:06Z","employer_posted_date":"2026-09-25","last_verified_at":"2026-10-12T08:10:15Z","board_verified":true,"closed_at":null,"days_open":20,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":20},"description":"Client:Leading Global Consulting Company\nLocation:Remotely from Poland with occasional business trips to Germany\nRate:160-180 PLN/h\nCooperation model:B2B or EmploymentContract\nStart date:ASAP\nRecruitment process:2 online interviews\nTechnology stack:Java, Spring, Kotlin, Apache Kafka, AWS, JavaScript, Angular\nWe are looking for a Senior Backend / Fullstack Developer to join an international product team working within the Customer Data Management domain.\nThe team is responsible for designing, developing and operating scalable services that represent the relationship between customers and vehicles throughout the entire lifecycle. The platform integrates with multiple enterprise systems, including customer-facing applications, CRM platforms and other internal services.\nA key element of the ecosystem is Apache Kafka, which is used as the central event-streaming platform to exchange large volumes of data in real time between different systems and applications. Therefore, strong hands-on experience with Kafka is essential for this role.\nThis is a hands-on engineering position combining backend development, cloud technologies, system integration and architecture. We are looking for someone who is comfortable taking end-to-end ownership of solutions in line with the “you build it, you run it” approach.\nYour role is:\nDesign, develop and maintain scalable backend services using Java and/or Kotlin with Spring. \nBuild and maintain APIs and integrations between customer-facing applications, CRM platforms and other enterprise systems. \nWork extensively with Apache Kafka to support event-driven communication and real-time data exchange. \nDesign and develop solutions based on distributed and event-driven architectures. \nContribute to software architecture, system design and technical decision-making. \nDevelop and operate cloud-native solutions running on AWS. \nApply cloud engineering best practices, including Infrastructure as Code, cloud security, automation and observability. \nTake end-to-end ownership of developed services, including deployment, monitoring, troubleshooting and production support. \nWork according to a DevOps-oriented “you build it, you run it” approach. \nCollaborate closely with developers, architects, product teams and other technical stakeholders in an international environment. \nEnsure solutions are scalable, maintainable, secure and reliable throughout their lifecycle. \nYour skills and experiences:\nSeveral years of professional software development experience with Java and/or Kotlin.\nStrong hands-on experience with Spring.\nStrong practical experience with Apache Kafka in production environments.\nExperience designing and implementing APIs and system integrations.\nSolid experience with software architecture and system design.\nGood understanding of event-driven architectures, asynchronous communication and distributed systems.\nPractical experience with AWS and cloud-native application development.\nKnowledge of cloud engineering best practices, including Infrastructure as Code and cloud security.\nStrong DevOps mindset and experience taking responsibility for applications after deployment.\nExperience working with CI/CD, monitoring, troubleshooting and production environments.\nStrong ownership mentality and a hands-on approach to software engineering.\nVery good English communication skills, as you will work in an international environment.\nNice to have:\nExperience with JavaScript and Angular.\nExperience integrating with Salesforce APIs.\nOur client offers:\nOpportunity to work on a large-scale international technology project.\nFully remote cooperation.\nOccasional business trips to Germany, typically once every few months.\nWork with modern cloud, event-streaming and distributed system technologies.\nDirect involvement in architecture and technical decision-making.\nHigh level of ownership and responsibility for developed solutions.\nCooperation with experienced engineering and product teams in an international environment.\nLong-term project perspective and opportunities for professional development.\nIf interested, please apply safely through this portal (application rules are in accordance with GDPR). Employment agency Nr 17138.","description_format":"text","description_chars":4201,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Professional development"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"},{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Professional Services","Information Security"],"lifecycle":[{"event":"open","at":"2026-09-22T16:02:12Z"}],"visa":[],"liveness":{"score":66,"band":"ok","label":"Likely open","p_open":1,"p_active":0.732,"p_room":0.9,"age_days":19,"expected_fill_days":52,"reasons":["conf:3","win:mid"],"computed_at":"2026-10-12T06:55:09Z"},"pay":{"stated_usd_annual":94000,"is_top_pay":false},"html_url":"https://alion.io/job/winged-it-senior-backend-fullstack-developer","json_url":"https://alion.io/job/winged-it-senior-backend-fullstack-developer.json","meta":{"generated_at":"2026-10-12T14:55:20Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":23560,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":1756},"rest":"https://alion.io/mcp/rest/get_company?id=1756"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwinged-it-senior-backend-fullstack-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fwinged-it-senior-backend-fullstack-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fwinged-it-senior-backend-fullstack-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/winged-it-senior-backend-fullstack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwinged-it-senior-backend-fullstack-developer"}]}