{"id":155708,"url":"https://alion.io/job/ares-group-senior-java-developer-mf","title":"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":73000,"max_usd":214000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6933},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"GitLab CI","optional":false},{"name":"Java","optional":false},{"name":"Machine Learning","optional":false},{"name":"MS SQL","optional":false},{"name":"OpenShift","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"OWASP","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Security","optional":false},{"name":"JavaScript","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-08-19T13:18:34Z","employer_posted_date":"2026-08-19","last_verified_at":"2026-10-17T02:31:18Z","board_verified":true,"closed_at":null,"days_open":58,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":58},"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 ARHS Group, part of Accenture, is looking for a Senior Java Developer to join one of our client teams in Luxembourg within the banking sector.\nYou will work on business-critical applications where software quality, performance, security, and reliability are key. Alongside hands-on Java development, you will contribute to the modernization of existing solutions, investigate complex technical issues, and help build a robust foundation for new projects.\nPlease note that fluency in French is mandatory for this position.\nTHE WORK:\nDevelop and maintain robust backend solutions using Java 17+ and the Spring ecosystem.\nContribute to application upgrades and technology modernization, addressing technical debt and obsolescence.\nInvestigate complex technical issues using logs and monitoring tools, perform root cause analysis, and improve application resilience.\nApply Security by Design principles, including authentication, authorization, secrets management, and data protection.\nIdentify and address application vulnerabilities, including OWASP-related risks and dependency vulnerabilities.\nImprove application performance, code quality, error handling, and observability.\nContribute to the modernization of existing services and the development of new solutions, ensuring smooth integration with web and mobile applications.\nMaintain technical documentation and automate testing to support reliable and stable production releases.\nOnsite at client site: This role requires an onsite presence with our clients and partners to support project delivery and strengthen collaboration.\nOur roles require in-person time to encourage collaboration, learning, and relationship-building with clients, colleagues, and communities. As an employer, we will be as flexible as possible to support your specific work/life needs.\nHERE’S WHAT YOU’LL NEED:\n5+ years of experience in Java development.\nStrong hands-on experience with Java 17+, Spring Boot, and Spring Security.\nStrong analytical and troubleshooting skills, including experience investigating logs and monitoring data to identify root causes.\nGood knowledge of MS SQL.\nExperience with OpenShift and GitLab CI.\nStrong understanding of software testing, application security, and OWASP best practices.\nExperience with observability tools and technologies such as OpenTelemetry and/or the ELK Stack.\nBasic knowledge of Angular and an understanding of mobile environments such as iOS, Android, and Capacitor.\nStrong focus on code quality, performance, reliability, and maintainability.\nFluency in French is mandatory.\nBONUS POINTS IF YOU HAVE:\nExperience working in the banking or financial services sector.\nExperience with application modernization or large-scale technical upgrade projects.\nExperience working with business-critical, high-availability applications.","description_format":"text","description_chars":3311,"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":"All levels","optional":false},{"language":"French","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":"2026-08-19T13:18:34Z"}],"visa":[],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.695,"p_room":0.55,"age_days":57,"expected_fill_days":41,"reasons":["conf:0","velocity","win:tail"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/ares-group-senior-java-developer-mf","json_url":"https://alion.io/job/ares-group-senior-java-developer-mf.json","meta":{"generated_at":"2026-10-17T04:17:36Z","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":5559,"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-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-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-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-senior-java-developer-mf\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fares-group-senior-java-developer-mf"}]}