{"id":3000360,"url":"https://alion.io/job/callista-senior-applikationsentwickler-java-kotlin-risk-applications","title":"Senior Applikationsentwickler Java / Kotlin – Risk Applications","company":{"id":693135,"name":"Callista","domain":"callista.ch","url":"https://alion.io/company/callista-3","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Zurich, Switzerland"],"countries":["CH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":106000,"max_usd":208000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":16},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"MS SQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"SQL","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2026-10-21T07:01:50Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-22T07:42:18Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Du möchtest deine Expertise in der Applikationsentwicklung auf Expertenniveau einbringen und anspruchsvolle Lösungen im Bereich Market Risk weiterentwickeln? In einem eingespielten Team aus acht Entwicklern und neun Fachmitarbeitenden gestaltest du die Weiterentwicklung eines bestehenden Systems sowie zukünftige technische Entwicklungen aktiv mit. Dabei setzt du deine fundierten Kenntnisse in Java, Kotlin und Datenbanktechnologien ein und leistest einen wichtigen Beitrag zur Qualität und kontinuierlichen Optimierung der Applikationen.\nHauptaufgaben:\nAnalyse von Anforderungen aus Fachbereich, Risk Management (Market & Credit Risk) und Handel sowie Übersetzung in technische Spezifikationen Design und Implementierung neuer Funktionen sowie Weiterentwicklung bestehender Komponenten in den Risiko- und Handelsapplikationen\n\nAnbindung und Weiterentwicklung von Schnittstellen zu Umsystemen (Handelssysteme, Marktdaten, Referenzdaten, Reporting, Risikoplattformen) Sicherstellung von Performance, Stabilität und Wartbarkeit der Anwendungen, insbesondere im Hinblick auf intraday- und end-of-day-Verarbeitung Durchführung von Unit-, Integrations- und Regressionstests sowie Unterstützung bei fachlichen Abnahmetests\n\nMitarbeit bei Fehleranalyse und -behebung (3rd-Level-Support) im Rahmen des Applikationsbetriebs\n\nErstellung und Pflege der technischen Dokumentation (Architektur, Design, Implementierungsdetails)\n\nRequirements\nAnforderungen:\nMehrjährige Berufserfahrung auf Expertenniveau in der Applikationsentwicklung mit Java und Kotlin\n\nSehr gute Kenntnisse in SQL, MSSQL, PostgreSQL und PL/SQL\n\nFundierte Kenntnisse in Linux sowie idealerweise Kubernetes und Windows\n\nErfahrung in der Schnittstellenintegration, Performanceoptimierung und im 3rd-Level-Support\n\nKenntnisse in Market Risk, Credit Risk oder Handelsapplikationen von Vorteil\n\nAnalytische, selbstständige und lösungsorientierte Arbeitsweise sowie gute Kommunikationsfähigkeiten\n\nSehr gute Deutsch- und Englischkenntnisse zwingend\n\nGenerelle Rahmenbedingungen:\nPensum: 100%\n\nEinsatz: ab sofort bis 31. 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