{"id":3102892,"url":"https://alion.io/job/dsi-group-tech-lead-net-c","title":"Tech Lead .NET / C#","company":{"id":3908468,"name":"DSI Group","domain":"group-dsi.com","url":"https://alion.io/company/dsi-5","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"freelance","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":78000,"max_usd":231000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2257},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"C#","optional":false},{"name":"Git","optional":false},{"name":"JavaScript","optional":false},{"name":"Scrum","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-10-22T13:48:55Z","employer_posted_date":null,"last_verified_at":"2026-10-22T13:48:55Z","board_verified":false,"closed_at":null,"days_open":7,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":7},"description":"Dans le cadre de la modernisation du système d’information d’un acteur de l’assurance-vie au Luxembourg, nous recherchons un Tech Lead .NET / C#.\nVous interviendrez sur la maintenance et l’évolution d’applications métiers, avec un rôle associant développement, orientation technique et accompagnement de l’équipe. Vous travaillerez avec les interlocuteurs métiers et les équipes projet pour construire des solutions fiables, sécurisées et adaptées aux usages.\nVos missions\nConcevoir et développer des fonctionnalités en C#/.NET et JavaScript/TypeScript.\n\nAnalyser les applications existantes et contribuer à leur refactoring ainsi qu’à leur modernisation.\n\nParticiper aux choix d’architecture et évaluer les impacts techniques des évolutions.\n\nAccompagner les développeurs dans la résolution des difficultés techniques et leur montée en compétences.\n\nOrganiser les revues de code et veiller à la qualité, à la maintenabilité et à la sécurité des développements.\n\nTraduire les besoins fonctionnels en solutions techniques, en collaboration avec les métiers et les responsables produit.\n\nContribuer à l’estimation des charges, à la priorisation des travaux et au suivi des livrables.\n\nRenforcer les pratiques de tests automatisés, d’intégration continue et de documentation.\n\nParticiper à la maintenance corrective et évolutive, identifier les risques et proposer des améliorations.\n\nFaciliter la coordination entre développeurs, chefs de projet et interlocuteurs métiers.\n\nProfil recherché\nFormation supérieure en informatique ou expérience équivalente.\n\nExpérience solide en développement C#/.NET, complétée par une maîtrise de JavaScript/TypeScript.\n\nExpérience préalable en tant que Tech Lead, Lead Developer ou référent technique.\n\nExpérience confirmée en assurance-vie au Luxembourg indispensable.\n\nBonne maîtrise de la conception logicielle, du refactoring et des principes de développement tels que SOLID et Clean Code.\n\nPratique des méthodes Agile/Scrum, de Git et des chaînes d’intégration continue.\n\nConnaissance des tests automatisés, de la sécurité applicative et des pratiques DevSecOps.\n\nCapacité à analyser les besoins, estimer les travaux et expliquer les choix techniques.\n\nFrançais et anglais professionnels, à l’oral comme à 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