{"id":3695464,"url":"https://alion.io/job/xantura-senior-java-developer","title":"Senior Java Developer","company":{"id":685225,"name":"Xantura","domain":"xantura.com","url":"https://alion.io/company/xantura","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Pinpoint","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":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure DevOps","optional":false},{"name":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"JUnit","optional":false},{"name":"Maven","optional":false},{"name":"Azure","optional":true}],"status":"live","first_seen_at":"2026-11-02T17:53:56Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-08T03:55:45Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"We are looking for an experienced Senior Java Developer to join the engineering team at Xantura, helping to design, build, and evolve our cloud-based data and analytics platform used by local authorities and public sector organisations across the UK.\nThis is a hands-on senior engineering role focused on developing scalable backend systems, improving platform reliability and performance, and contributing to the ongoing evolution of our architecture, engineering standards, and development practices.\n\nThe role would suit someone who enjoys solving complex technical problems, working with large-scale data processing systems, and contributing to both technical delivery and engineering improvement initiatives.\nKey Responsibilities\nDesign, develop, maintain and support Java-based backend services for data acquisition, processing, matching, analytics and integration, built to scale and perform under load\nBuild and maintain applications that use Java RMI for communication between services (hands-on RMI experience is essential)\nShow real depth of understanding in your solutions: explain and justify your design decisions, and judge when to use an existing library and when a custom implementation is the better choice\nWrite clean, maintainable, well-tested code to agreed engineering standards, and collaborate with QA to meet the Definition of Done\nInvestigate and resolve complex production issues and performance bottlenecks, and improve resilience, monitoring and operational reliability\nContribute to architecture discussions, design and peer reviews, and mentor junior and mid-level developers\n\nWhat are we looking for?\nWe’d love to hear from you if you have:\nA degree in Computer Science, Software Engineering or a related technical discipline, or equivalent practical experience\nStrong commercial experience developing enterprise applications in Java, with excellent knowledge of Java 17+, Maven, and JUnit and automated testing approaches\nProven skill in performance optimisation and troubleshooting\nExperience with CI/CD pipelines, source control workflows and Azure DevOps or similar lifecycle tooling\nStrong grasp of software engineering principles, clean code and maintainable design, backed by sharp analytical and problem-solving skills\nClear communicator who collaborates well in multi-disciplinary teams, with a proactive mindset, strong ownership and a commitment to continuous improvement\n\nLocation - This is a hybrid role based in our office in London (Borough). You would be expected to be able to work from the office at least 1-2 days per week. Some travel is also required for on-site client engagements as needed.\nWhat can we offer you?\nCompetitive salary reviewed annually\nWork for a passionate, mission-driven company solving society’s big problems\nTraining and development opportunities\n25 days annual leave (plus bank holidays)\nCompany pension\nPrivate medical insurance\nGenerous enhanced parental leave policies\nCycle to work scheme\nFlu Vaccinations,\nEye Test and contribution towards Glasses for VDU use\nEmployee Assistance ProgrammeMental health and wellbeing support\nRemote GP access\nCounselling/therapy\nPhysiotherapy\nMedical second opinions","description_format":"text","description_chars":3180,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave","Health insurance","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Government","Data Marketplaces, Sharing & Clean Rooms"],"lifecycle":[{"event":"open","at":"2026-11-03T17:53:56Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":4,"expected_fill_days":30,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/xantura-senior-java-developer","json_url":"https://alion.io/job/xantura-senior-java-developer.json","meta":{"generated_at":"2026-11-08T04:57:30Z","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":10723,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"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":685225},"rest":"https://alion.io/mcp/rest/get_company?id=685225"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxantura-senior-java-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%2Fxantura-senior-java-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%2Fxantura-senior-java-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/xantura-senior-java-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxantura-senior-java-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3695464}},{"tool":"search_jobs","arguments":{"company":"xantura.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3695464},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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