Senior Full Stack .Net Developer

Starr Insurance Companies • $110K — $130K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of professional software development experience in a senior role
  • Strong expertise in modern .NET, C#, Angular, Azure, and SQL Server
  • Deep understanding of enterprise application architecture and design principles
  • Experience with secure coding practices and authentication protocols
  • Proficient in building and maintaining RESTful APIs and cloud-native applications
  • Familiarity with AI-assisted development tools and practices

Responsibilities

  • Design and develop scalable web applications with .NET, Angular, and SQL Server
  • Build and maintain RESTful APIs and backend services
  • Implement secure coding and enterprise security standards
  • Create efficient data models and optimize database performance
  • Troubleshoot and resolve complex production issues effectively

Benefits

  • Opportunities for professional growth and mentoring
  • Collaborative work environment with diverse teams
  • Access to the latest technologies and tools
  • Flexibility in work arrangements
  • Participation in innovative and impactful projects
Full Job Description
Senior Full Stack .NET Developer

We are seeking a highly experienced Senior Full Stack .NET Developer to design, build, enhance, and support secure, scalable, cloud-native business applications. This role will work across the full software delivery lifecycle-from architecture and technical design through implementation, deployment, monitoring, and ongoing optimization.

The ideal candidate is an experienced hands-on engineer with deep expertise in modern .NET/C#, Angular, Azure, SQL Server, and enterprise application architecture. You will help establish technical standards, mentor other developers, and partner closely with product owners, business stakeholders, QA, DevOps, and security teams.

Responsibilities
  • Design, develop, test, deploy, and maintain modern web applications using .NET, C#, Angular, SQL Server, and Microsoft Azure.
  • Build and maintain RESTful APIs, backend services, integration layers, and user-facing Angular applications.
  • Apply secure coding practices, authentication and authorization patterns, and enterprise security standards throughout the application stack.
  • Design efficient data models, database schemas, queries, and performance-tuning strategies for SQL Server.
  • Troubleshoot complex production issues involving application code, database performance, cloud infrastructure, integrations, and deployment processes.

Required Qualifications

Modern .NET and C#
  • Extensive professional experience developing enterprise applications using recent versions of .NET and C#.
  • Strong understanding of object-oriented design, SOLID principles, dependency injection, asynchronous programming, exception handling, logging, and performance optimization.
  • Experience building and maintaining ASP.NET Core web APIs, background services, worker processes, and service-oriented applications.
  • Experience designing API contracts, versioning APIs, implementing validation, handling errors consistently, and securing endpoints.
  • Strong knowledge of authentication and authorization approaches such as OAuth 2.0, OpenID Connect, JWT, role-based access control, and claims-based authorization.
  • Experience with unit testing, integration testing, mocking frameworks, and testable application architecture.

Entity Framework Core
  • Strong experience using Entity Framework Core for database access, migrations, data modeling, and repository/service-layer patterns.
  • Ability to diagnose and improve EF Core performance issues, including inefficient queries, excessive database round trips, tracking behavior, eager versus lazy loading, and query projections.
  • Strong understanding of transactional behavior, concurrency handling, data integrity, and error recovery.

Angular Front-End Development
  • Extensive experience building single-page applications with recent versions of Angular and TypeScript.
  • Strong knowledge of Angular components, services, dependency injection, routing, forms, HTTP clients, RxJS, observables, signals, stores, state management, and reusable UI patterns.
  • Experience developing responsive, accessible, and performant web interfaces using HTML, CSS/SCSS, and modern UI component libraries.
  • Familiarity with Angular testing practices, including unit tests and end-to-end testing.

Azure Cloud Development
  • Strong hands-on experience designing, deploying, and supporting applications in Microsoft Azure.
  • Experience with Azure App Service, Azure Functions, Azure SQL Database, Azure Storage, Azure Key Vault, Application Insights, Azure Monitor, and Azure API Management or equivalent services.
  • Experience implementing cloud-native patterns such as managed identities, configuration management, secret management, background processing, event-driven workflows, and scalable deployment architectures.
  • Ability to diagnose application, infrastructure, networking, identity, and configuration issues in Azure environments.
  • Experience with Infrastructure as Code using tools such as Bicep, ARM templates, Terraform, or similar technologies.
  • Familiarity with cost optimization, availability, resiliency, disaster recovery, and security best practices in Azure.

SQL Server Database Development
  • Strong experience designing, developing, and optimizing Microsoft SQL Server databases.
  • Advanced SQL skills, including complex queries, joins, common table expressions, window functions, stored procedures, views, functions, and transactions.
  • Experience with schema design, normalization, indexing strategies, execution plan analysis, query tuning, and database performance troubleshooting.
  • Understanding of database security, permissions, auditing, backup/recovery concepts, and data-retention considerations.
  • Experience supporting database deployments and coordinating schema changes across development, test, staging, and production environments.
  • Familiarity with Azure SQL Database and the differences between cloud-managed and self-hosted SQL Server environments.

AI-Assisted Development
  • Strong experience using AI-assisted development tools to improve productivity, code quality, documentation, testing, and analysis.
  • Ability to use tools such as GitHub Copilot or comparable developer-assistance platforms responsibly and effectively.
  • Ability to identify practical opportunities for AI to assist with code generation, refactoring, test creation, documentation, troubleshooting, and developer workflows.

Additional Preferred Qualifications
  • Bachelor's degree in Computer Science, Software Engineering, Information Systems, or equivalent practical experience.
  • 8+ years of professional software development experience, including significant experience in senior or technical leadership roles.
  • Experience with Agile delivery methodologies, including Scrum or Kanban.
  • Experience with Git-based source control, pull requests, branching strategies, and code-review practices.
  • Experience building CI/CD pipelines using Azure DevOps, GitHub Actions, or similar platforms.
  • Familiarity with Docker, containerized workloads, Kubernetes, or Azure Kubernetes Service is preferred.
  • Experience with caching technologies such as Redis.
  • Experience working in regulated, security-conscious, or high-availability enterprise environments is a plus.
  • Strong written and verbal communication skills, including the ability to explain complex technical concepts to both technical and non-technical stakeholders.

About Starr Insurance Companies

Starr Insurance Companies Careers

There has never been a better time to join the global team of Starr Insurance Companies—the leading provider of insurance and investment solutions worldwide.

Work You’ll Do

Join Starr Insurance Companies' top-tier team to assist some of the most prestigious clients in navigating their risk management and insurance strategies. Transform the approach to global insurance solutions with the brightest minds at Starr Insurance Companies. This is where innovation meets industry expertise in a dynamic environment. Lead from a unique position in the marketplace, at the crossroads of deep industry knowledge and extensive insurance innovation. Engage with a worldwide network of professionals dedicated to redefining the future of insurance and risk management. Collaborate with a diverse and inclusive team, fostering a culture of professional growth and diversity training.

Introducing the Starr Insurance Companies Professional Growth Path

The team is committed to building a leading career development framework to help individuals master their professional journey within the insurance industry.

Do Innovative Work

Be part of a team that is at the forefront of industry innovation—delivering targeted solutions through a depth of expertise that is unmatched in the insurance sector.

Drive Innovation and Leadership

Develop and implement groundbreaking solutions on trusted platforms, enhancing Starr Insurance Companies' position as a leader in the insurance industry.

Be Part of a Great Team

Join a team that values diversity and leadership, working on a wide range of initiatives that harness the capabilities of Starr Insurance Companies' global presence.

Future-proof Your Career

Advance your career with limitless opportunities supported by unmatched training, development, and certification programs.

Explore

Discover how Starr Insurance Companies is leading the way in predictive analytics to revolutionize risk assessment and management solutions.

The Starr Insurance Companies Edge

With a commitment to innovation and leadership, Starr Insurance Companies helps clients tackle the challenges of today’s dynamic market. Clients globally turn to Starr Insurance Companies for strategic insights and solutions that drive growth and success in the insurance industry.

Stay Connected

Join the Team

Search open positions that match your skills and interests. Starr Insurance Companies seeks passionate, curious, and solution-driven team players. SEARCH STARR INSURANCE COMPANIES JOBS

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