{"id":3564257,"url":"https://alion.io/job/cs-informatica-desarrollador-fullstack-net-react-semi-senior-2","title":"Desarrollador Fullstack .NET + React | Semi Senior","company":{"id":3852599,"name":"C&S Informática","domain":"cys.com.ar","url":"https://alion.io/company/cys-com-ar","size_band":null,"is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Axios","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"ESLint","optional":false},{"name":"Git","optional":false},{"name":"npm","optional":false},{"name":"Prettier","optional":false},{"name":"React Router","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"SQL","optional":false},{"name":"Swagger","optional":false},{"name":"TypeScript","optional":false},{"name":"Webpack","optional":false},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true}],"status":"live","first_seen_at":"2026-10-30T14:50:16Z","employer_posted_date":null,"last_verified_at":"2026-10-30T14:50:16Z","board_verified":false,"closed_at":null,"days_open":9,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":9},"description":"Desarrollador Fullstack .\n\nNET + React | Semi Senior Desde C&S Talent nos encontramos en búsqueda de un/a Desarrollador/a Fullstack .\n\nNET + React Semi Senior para sumarse a un proyecto en Banco. Modalidad: Híbrida Se aceptan candidatos de otras provincias. Horario: Lunes a viernes de 9 a 18 hs. Responsabilidades y tareas Desarrollar y mantener aplicaciones utilizando C# y .\n\nNET 8 / ASP.\n\nNET Core Web API.\n\nConstruir interfaces web con React 18 y TypeScript.\n\nDiseñar, desarrollar e integrar APIs REST y arquitecturas basadas en microservicios.\n\nTrabajar con servicios, BFF y comunicación entre APIs.\n\nImplementar validaciones, manejo de errores y documentación de APIs.\n\nTrabajar con bases de datos SQL Server y Entity Framework Core.\n\nParticipar en pruebas unitarias, depuración y mantenimiento de suites de testing.\n\nColaborar en la integración de servicios y en la evolución de las soluciones existentes. Requisitos mandatorios Experiencia mínima de 3 años en desarrollo con C# y .\n\nNET.\n\nExperiencia mínima de 2 años con React y TypeScript.\n\nConocimientos de .\n\nNET 8 y ASP.\n\nNET Core Web API.\n\nExperiencia con React 18, HTML, CSS y consumo de APIs REST.\n\nConocimientos de arquitectura de microservicios, servicios y BFF.\n\nExperiencia con SQL Server y Entity Framework Core.\n\nManejo de Swagger/OpenAPI, validaciones y manejo de errores.\n\nConocimientos de autenticación y autorización, JWT y OAuth.\n\nManejo de Git, NuGet, npm y herramientas de depuración.\n\nExperiencia realizando testing unitario en .\n\nNET y frontend.\n\nConocimientos de Webpack, ESLint y Prettier.\n\nExperiencia en sistemas transaccionales o de alta criticidad. Conocimientos deseables React Router y Axios.\n\nMicrofrontends y Design Systems / Component Libraries.\n\nIntegración con servicios SOAP/WCF.\n\nMongoDB, mensajería, colas y procesos batch.\n\nObservabilidad, logging y trazabilidad distribuida.\n\nIntegración con APIs internas, contratos versionados y BFFs.\n\nDocker, CI/CD y despliegues en plataformas PaaS.","description_format":"text","description_chars":1986,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Custom Software Development","Enterprise Apps Implementation Partners"],"lifecycle":[{"event":"open","at":"2026-10-31T08:40:09Z"}],"visa":[],"liveness":{"score":84,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.887,"p_room":0.945,"age_days":8,"expected_fill_days":15,"reasons":["seen:8","velocity","win:mid"],"computed_at":"2026-11-08T05:47:12Z"},"pay":null,"html_url":"https://alion.io/job/cs-informatica-desarrollador-fullstack-net-react-semi-senior-2","json_url":"https://alion.io/job/cs-informatica-desarrollador-fullstack-net-react-semi-senior-2.json","meta":{"generated_at":"2026-11-08T15:14:18Z","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":32207,"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":0.1,"usd":0.01,"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":3852599},"rest":"https://alion.io/mcp/rest/get_company?id=3852599"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcs-informatica-desarrollador-fullstack-net-react-semi-senior-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fcs-informatica-desarrollador-fullstack-net-react-semi-senior-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fcs-informatica-desarrollador-fullstack-net-react-semi-senior-2"},{"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/cs-informatica-desarrollador-fullstack-net-react-semi-senior-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcs-informatica-desarrollador-fullstack-net-react-semi-senior-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3564257}},{"tool":"search_jobs","arguments":{"company":"cys.com.ar","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3564257},"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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