Senior .Net Developer

Hitachi Digital; Argentina; On-site; ARS 1,800,000 - 2,400,000; Full time

Job summary

Hitachi Digital LLC in Argentina is seeking a Senior Software Developer to design, develop, and modernize enterprise applications across the full technology stack.

You will work with ASP.NET MVC, C#, Vue.js, and cloud-based Azure services to build RESTful APIs, migrate on‑premise systems, and ensure robust data management with SQL Server.

Collaborate with business analysts, QA, and stakeholders in an Agile environment to deliver scalable software solutions.

Qualifications

• Experience designing, developing, maintaining enterprise applications.
• Experience with legacy and modern stacks.

Responsibilities

• Design, develop, maintain, and enhance enterprise applications on ASP.NET MVC and C#.
• Troubleshoot defects, performance issues, and production incidents.
• Refactor legacy code to improve maintainability and performance.
• Collaborate with business teams to implement new features.
• Design, develop, and maintain Microsoft SQL Server databases.
• Build RESTful APIs and backend services.
• Migrate applications to Microsoft Azure.

Skills

C#

Razor CSHTML

jQuery

DataTables

T-SQL

Git

Education

Bachelor's degree in Computer Science or related field

Tools

ASP.NET MVC

ASP.NET Core

Vue.js

Azure Cloud Services

Azure SQL

REST API Design

Entity Framework

Job description

The Senior Software Developer is responsible for the design, development, maintenance, and

modernization of enterprise business applications. This role supports both legacy and next-generation

systems, working across the full technology stack including backend development, frontend

implementation, database management, and cloud-based solutions.

The position involves maintaining existing applications built using C#, ASP.NET MVC, Razor (CSHTML),

jQuery, DataTables, and SQL Server, while contributing to the development of modern cloud-native

solutions utilizing the latest .NET technologies, Vue.js, Azure Cloud Services, and Azure-hosted SQL

Job Responsibilities

KEY RESPONSIBILITIES

Legacy Application Development & Support

Design, develop, maintain, and enhance enterprise applications built on ASP.NET MVC and C#.

Troubleshoot and resolve application defects, performance issues, and production incidents.

Refactor and improve legacy code to enhance maintainability and performance.

Collaborate with business teams to implement new features and enhancements.

Database Development

Design, develop, and maintain Microsoft SQL Server databases.

Create and optimize stored procedures, views, functions, and queries.

Analyse and improve database performance through indexing and query optimization.

Ensure data integrity, security, and reliability across enterprise systems.

Modern Application Development

Develop cloud-based applications using modern C# and .NET technologies.

Build responsive and maintainable frontend applications using Vue.js.

Design and implement RESTful APIs and backend services.

Contribute to scalable and maintainable application architecture following modern development practices.

Participate in the migration of applications and services from on-premises infrastructure to Microsoft Azure.

Develop and maintain Azure-hosted services and databases.

Support cloud deployment, configuration, monitoring, and optimization activities.

Assist in defining and implementing cloud architecture standards and best practices.

Software Quality & Collaboration

Participate in code reviews and promote coding standards and best practices.

Collaborate with cross-functional teams including business analysts, stakeholders, and QA personnel.

Produce technical documentation and system design documentation.

Support Agile development processes including sprint planning, estimation, and retrospectives.

Legacy Application Development & Support

Design, develop, maintain, and enhance enterprise applications built on ASP.NET MVC and C#.

Troubleshoot and resolve application defects, performance issues, and production incidents.

Refactor and improve legacy code to enhance maintainability and performance.

Collaborate with business teams to implement new features and enhancements.

Database Development

Design, develop, and maintain Microsoft SQL Server databases.

Create and optimize stored procedures, views, functions, and queries.

Analyze and improve database performance through indexing and query optimization.

Ensure data integrity, security, and reliability across enterprise systems.

Modern Application Development

Develop cloud-based applications using modern C# and .NET technologies.

Build responsive and maintainable frontend applications using Vue.js.

Design and implement RESTful APIs and backend services.

Contribute to scalable and maintainable application architecture following modern development practices.

Participate in the migration of applications and services from on-premises infrastructure to Microsoft Azure.

Develop and maintain Azure-hosted services and databases.

Support cloud deployment, configuration, monitoring, and optimization activities.

Assist in defining and implementing cloud architecture standards and best practices.

Software Quality & Collaboration

Participate in code reviews and promote coding standards and best practices.

Collaborate with cross-functional teams including business analysts, stakeholders, and QA personnel.

Produce technical documentation and system design documentation.

Support Agile development processes including sprint planning, estimation, and retrospectives.

KNOWLEDGE & EXPERIENCE

C#

Razor (CSHTML)

jQuery

DataTables

Microsoft SQL Server

T-SQL

Git Source Control

Preferred

Vue.js

REST API Design

Entity Framework

Cloud-Native Application Development

EDUCATION & CERTIFICATIONS

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or equivalent experience.

Proven experience developing and supporting enterprise-scale applications.

PERSONAL & PROFESSIONAL ATTRIBUTES

Strong understanding of software development lifecycle methodologies and best practices.

Experience working across both legacy and modern technology stacks.

Ability to analyse business requirements and translate them into technical solutions.