{"id":155736,"url":"https://alion.io/job/ares-group-mid-level-senior-java-developer-mf","title":"Mid-level / Senior Java Developer (m/f)","company":{"id":54633,"name":"Arhs Group","domain":"arhs-group.com","url":"https://alion.io/company/ares-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":7,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":41,"computed_at":"2026-10-16T05:45:00Z"}},"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":["Luxembourg City, Luxembourg"],"countries":["LU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":74000,"max_usd":218000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6933},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"JUnit","optional":false},{"name":"Kubernetes","optional":false},{"name":"Machine Learning","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"Testcontainers","optional":false},{"name":"Angular","optional":true},{"name":"Go","optional":true},{"name":"GraphQL","optional":true},{"name":"JavaScript","optional":true},{"name":"Knative","optional":true},{"name":"Node JS","optional":true},{"name":"Open Policy Agent","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2025-12-05T11:32:38Z","employer_posted_date":"2025-12-05","last_verified_at":"2026-10-17T02:31:18Z","board_verified":true,"closed_at":null,"days_open":315,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":314},"description":"Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.\nArηs Group was acquired by Accenture in July 2024.\n We are expanding our internal development teams and are looking for a Mid-level or Senior Java Developers to join ARHS Group, part of Accenture. This role offers a hands-on opportunity to work on microservice-based platforms using Java and Spring Boot in a collaborative, international environment.\nTHE WORK:\nDesign, build, test, and maintain backend applications using Java and Spring / Spring Boot.\nDevelop scalable microservices and REST APIs aligned with modern architectural standards.\nContribute to technical design discussions and participate in code reviews to maintain high-quality coding practices.\nIntegrate systems with databases, messaging platforms, and authentication services, following security and compliance guidelines.\nCollaborate with developers, architects, business analysts, QA, and DevOps teams to deliver end-to-end features.\nTroubleshoot production issues and contribute to improvements in performance, reliability, and observability.\nSupport CI/CD processes and automation alongside the DevOps team.\nMaintain clear technical documentation and share knowledge within the team.\nOur roles require in-person time to encourage collaboration, learning, and relationship-building with colleagues and partners. As an employer, we will be as flexible as possible to support your specific work-life needs.\nHERE’S WHAT YOU’LL NEED:\n 4+ years of experience (Mid-level) or 7+ years of experience (Senior) in professional software development.\nStrong hands-on expertise with Java and Spring / Spring Boot.\nSolid experience designing and building RESTful APIs, microservice architectures, and unit/integration testing (JUnit, Testcontainers or similar).\nExperience working with both relational and non-relational databases (e.g., PostgreSQL, MongoDB).\nPractical knowledge of Kafka or Kubernetes (strong proficiency in at least one of these is required).\nComfortable working in collaborative Agile environments.\nStrong communication skills and a team-oriented mindset.\n Fluency in English (written and spoken).\nBONUS POINTS IF YOU HAVE:\nExperience with Angular for basic to intermediate frontend development.\nExperience developing Kubernetes operators or working with advanced Kubernetes features.\nFamiliarity with GraphQL (Apollo Federation is a plus).\nKnowledge of Open Policy Agent (OPA) or security policy frameworks.\nExposure to eventual consistency patterns or distributed system design.\nExperience with Go (Golang) or Node.js backend development.\nExperience with Knative or other serverless/container platforms.","description_format":"text","description_chars":3028,"description_truncated":false,"requirements":{"experience_years_min":7,"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":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Government","IT Consulting & Digital Transformation","Custom Software Development"],"lifecycle":[{"event":"open","at":"2025-12-05T11:32:38Z"},{"event":"open","at":"2026-09-25T17:17:00Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.228,"p_room":0.28,"age_days":314,"expected_fill_days":41,"reasons":["conf:0","velocity","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/ares-group-mid-level-senior-java-developer-mf","json_url":"https://alion.io/job/ares-group-mid-level-senior-java-developer-mf.json","meta":{"generated_at":"2026-10-17T03:24:08Z","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":4396,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":54633},"rest":"https://alion.io/mcp/rest/get_company?id=54633"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fares-group-mid-level-senior-java-developer-mf"},{"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%2Fares-group-mid-level-senior-java-developer-mf"},{"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%2Fares-group-mid-level-senior-java-developer-mf"},{"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/ares-group-mid-level-senior-java-developer-mf\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fares-group-mid-level-senior-java-developer-mf"}]}