{"id":3058928,"url":"https://alion.io/job/arhs-group-senior-net-software-engineer","title":"Senior .NET Software Engineer","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":49,"computed_at":"2026-10-28T05:59:10Z"}},"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":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":92000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":352},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ASP.NET Core","optional":false},{"name":"Azure DevOps","optional":false},{"name":"C#","optional":false},{"name":"Checkmarx","optional":false},{"name":"Core Data","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"Hangfire","optional":false},{"name":"Machine Learning","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"OpenShift","optional":false},{"name":"Scrum","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"UML","optional":false},{"name":"Windows","optional":false},{"name":"Azure","optional":true}],"status":"live","first_seen_at":"2026-10-22T05:24:02Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-10-28T13:19:27Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"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. Arηs Group was acquired by Accenture in July 2024.\n Designs and develops the system\nLead development teams\nTranslates requirements into design\nOptimizes software from performance, security and quality points of view\nProduces technical documentation\nEstimates effort and time for development\nSets software development standards\nProposes technical solutions for business needs and technical problems\nCollects and interprets software metrics\nManages configuration and releases\nContributes to requirements analysis, testing, quality assurance, change management, deployment\nTests solutions and develops testing tools\nDocuments developments\nPrototypes solutions\nActs as 2nd and 3rd line support\n Mandatory:\nBachelor's degree plus 6 years of IT relevant professional experience\nMinimum English language skills at the Level B2\nMinimum 3 years project experience relevant to the profile or at similar position\nRequired Certificates (At least 1 certification among:\nAdvanced level certificate in software development technology domain\nor an equivalent certification recognized internationally (subject to acceptance as a valid credential by the Contracting Authority)\n\nKnowledge and Skills\nHas gone at least 1 time through the complete lifecycle of the solution\nExpert in developing enterprise level software systems in specified technology domain\nKnows UML and can design applications in UML\nProficient in designing and developing: data layer, business logic layer and UI layer\nWorked in Scrum development\nIs capable for leading technical teams\nHolds ability to document effectively technical solutions\nPresents problem solving skills\nSpecific Requirements\nProven development and support of enterprise web applications on .NET (Core / 8) with C#, Entity Framework and SQL Server, and of React/Typescript single-page applications, including build and deployment through Azure DevOps Pipelines\nHands-on experience with deployment and operation of applications on Windows/IIS and container or virtualised platforms (Nutanix / OpenShift), background-job frameworks (e.g. Hangfire), ASP.NET Core Data Protection and certificate management, and with security-scan (Checkmarx) and penetration-test remediation\nExperience integrating applications with SAML 2.0 / Entra ID, PDF and image-processing libraries and document-management interfaces, and with taking over a code base delivered by an external contractor (code review, technical-debt management, third-line support)\nExperience supporting production systems in a large organization context (release management through a Change Advisory Board, UAT support, incident analysis) and readiness to work alongside a 3rd party development contractor during its third-level-support 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