Application Engineering Senior Developer - .NET Full Stack&Integrations - EY Global Delivery Service
Ernst and Young2 months ago
Buenos Aires, ArgentinaSenior
Responsibilities
- Design and implement .NET full-stack applications, Angular frontends, REST API integrations, and reverse or batch integrations.
- Develop SQL Server queries, stored procedures, performance-tuning solutions, production data fixes, and data-reconciliation processes.
- Implement ETL and scalable data pipelines using Azure Data Factory and/or SSIS for high-volume enterprise processing.
- Own production systems and integrations, including issue triage, root-cause analysis, remediation, observability, and operational readiness.
- Serve as a technical authority and escalation point during migrations, production incidents, and release cutovers.
- Coordinate with stakeholders, architects, and delivery teams and mentor engineers on integration patterns, coding standards, and operational practices.
Requirements
- At least 6 years of application engineering or full-stack development experience with significant enterprise-integration exposure.
- Prior experience in lead or senior technical roles with ownership of production systems.
- Strong hands-on experience with .NET, .NET Core, C#, Angular, TypeScript, HTML5, CSS3, JavaScript, and full-stack application development.
- Advanced SQL Server expertise, including complex queries, stored procedures, indexing, performance optimization, and controlled production data fixes.
- Experience with REST APIs, JSON, OAuth2, JWT, API keys, authentication and authorization, structured error handling, and resiliency patterns.
- Experience with Angular component architectures, dependency injection, routing, state management, RxJS, observables, subscription management, authentication guards, lazy loading, and performance optimization.
- Hands-on experience with Azure Data Factory and/or SSIS, batch processing, scheduling, dependency management, and scalable enterprise data pipelines.
- Experience supporting large migrations, platform transitions, or enterprise cutovers is highly desirable.
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About Ernst and Young
Ernst & Young (EY) provides audit/assurance, tax, consulting, strategy and transactions services to enterprises, financial institutions, and public‑sector clients. Structured as a global network of partner‑owned member firms, it sells professional services on a fee basis, including a dedicated Financial Services Organization for banking, insurance, and capital markets. Headquartered in London, EY was formed in 1989 from the merger of Ernst & Whinney and Arthur Young, and operates in 150+ countries.