{"id":2117220,"url":"https://alion.io/job/apifonica-senior-software-engineer-java-cloud-communications-mfd","title":"Senior Software Engineer (Java) – Cloud Communications (m/f/d)","company":{"id":2210120,"name":"Apifonica","domain":"apifonica.com","url":"https://alion.io/company/apifonica","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":21000,"max":25000,"currency":"PLN","period":"month","gross":false,"usd_annual":76752},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ArgoCD","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GitHub Actions","optional":false},{"name":"GitLab CI","optional":false},{"name":"Hibernate","optional":false},{"name":"Java","optional":false},{"name":"Jenkins","optional":false},{"name":"Kanban","optional":false},{"name":"Kubernetes","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Framework","optional":false},{"name":"AI Agents","optional":true},{"name":"Apache Kafka","optional":true},{"name":"Claude Code","optional":true},{"name":"Copilot","optional":true},{"name":"Edge AI","optional":true},{"name":"GDPR","optional":true},{"name":"RabbitMQ","optional":true},{"name":"SLI/SLO/SLA","optional":true},{"name":"WebRTC","optional":true}],"status":"live","first_seen_at":"2026-09-28T17:21:34Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-17T01:42:43Z","board_verified":true,"closed_at":null,"days_open":19,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":19},"description":"In this role you will:\n Design & buildDesign and implement backend services and APIs in modern Java (21+), Spring Boot and related frameworks\nBuild distributed, cloud-native applications using microservice architectures\nWork with container technologies (Docker) and Kubernetes, and collaborate with Platform Engineering on infrastructure-related changes\nContribute to CI/CD pipelines and deployment automation\nShip & operate\nOwn services end to end following a “you build it, you run it” mindset - including monitoring, logging, troubleshooting and incident response\nUse observability tooling (metrics, centralized logging, distributed tracing, APM) to keep services healthy in production\nApply secure software development practices, including OWASP Top 10, dependency and secrets management\nCollaborate & improve\nWork in Agile product teams (Scrum/Kanban) with a collaborative, ownership-driven mindset\nReview code, mentor colleagues, and help raise engineering quality across the team\nUse AI-assisted engineering tools where useful to speed up delivery without compromising quality or security\nImportant to know\nYou will own services end to end. From design through to running them in production\nCloud-native and DevOps skills (Kubernetes, CI/CD, observability) matter as much as core Java expertise\nYou will work closely with Platform Engineering, Security and Product - this is a collaborative, not a siloed, role\nOur domain is telecommunications and cloud communications, so telecom background is a strong plus but not a requirement\nWe use AI-assisted engineering tools as part of our normal workflow and expect openness to themWe’re looking for a person who has:\n•5+ years of professional experience in software engineering with a strong focus on Java-based backend systems\nStrong knowledge of modern Java (21+), Spring Boot, Spring Framework, JPA/Hibernate and RESTful API design\nExperience designing and implementing distributed, cloud-native applications using microservices\nHands-on experience with Docker, Kubernetes, and at least one modern CI/CD tool (e.g. GitHub Actions, GitLab CI, Jenkins, Argo CD)\nFast learning curve with a track record of adapting to changing tech stacks\nSolid grounding in software quality practices: automated testing, code reviews, CI/CD\nGood understanding of secure development practices (OWASP Top 10, dependency & secrets management)\nExperience with observability tooling: metrics, centralized logging, distributed tracing, APM\nComfortable operating production services and responding to incidents\nStrong analytical thinking and sound technical decision-making in complex distributed systems\nFluent in English (written and spoken); German is a plusSome nice-to-have skills:\nPractical experience using AI-assisted engineering tools (e.g. Claude Code, GitHub Copilot) or genuine openness to adopting them\nExperience with CPaaS or cloud communications platforms, telecom protocols (SIP, RTP, WebRTC), or related open-source frameworks (FreeSWITCH, Kamailio, Asterisk)\nFamiliarity with carrier-grade, highly available, low-latency distributed systems\nExperience with asynchronous messaging / event-driven architectures (Kafka, RabbitMQ)Why Apifonica?\n What we offer\nCompensation: 21,000-25,000 PLN net + VAT/month (B2B), depending on experience\nHybrid working model based in the very center of Warsaw\nPrivate health insurance package and sports card coverage (details will be provided during the recruitment process)\nAn international B2B technology environment: working with clients from various European markets within a rapidly growing technology company\nFocus on artificial intelligence and technology: day-to-day work with cutting-edge AI solutions and digital tools\nAn influential team: an international, highly productive team with a fast decision-making process and a tangible impact on the company’s growth\nApifonica is a communications automation platform that has been operating in the market for over ten years. AI agents, messaging, voice services and numbers operate on our own telecoms infrastructure, managed by Tenios - a company within our group and a licensed German operator that has been operating in the telecoms sector since 2001. A single contract and a single SLA cover all channels, and a single team is responsible for both the AI logic and call quality.\nEvery month, we handle over 250 million calls and 70 million messages for more than 1,800 business clients, including MAN, ERGO, Toyota, Generali and Leroy Merlin. Our teams are based in Germany, Poland and Latvia; our head office is in Tallinn; and our infrastructure remains in Europe - it is located in Frankfurt, is ISO/IEC 27001:2022 certified and complies with GDPR requirements.","description_format":"text","description_chars":4704,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Health insurance","Hybrid work"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"},{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T23:31:57Z"}],"visa":[],"liveness":{"score":56,"band":"ok","label":"Likely open","p_open":1,"p_active":0.749,"p_room":0.75,"age_days":18,"expected_fill_days":26,"reasons":["conf:4","win:late"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":76752,"is_top_pay":false},"html_url":"https://alion.io/job/apifonica-senior-software-engineer-java-cloud-communications-mfd","json_url":"https://alion.io/job/apifonica-senior-software-engineer-java-cloud-communications-mfd.json","meta":{"generated_at":"2026-10-18T06:39:16Z","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":9880,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":2210120},"rest":"https://alion.io/mcp/rest/get_company?id=2210120"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fapifonica-senior-software-engineer-java-cloud-communications-mfd"},{"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%2Fapifonica-senior-software-engineer-java-cloud-communications-mfd"},{"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%2Fapifonica-senior-software-engineer-java-cloud-communications-mfd"},{"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/apifonica-senior-software-engineer-java-cloud-communications-mfd\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fapifonica-senior-software-engineer-java-cloud-communications-mfd"}]}