Full Stack Developer - .NET (Intermediate)
AIIM
Role Purpose
Reporting to the VP, Solutions & Delivery, we are looking for a talented and motivated Full Stack Developer – .NET to join our development team. The ideal candidate will have strong experience building scalable, secure, and high-performance web applications using the Microsoft .NET ecosystem, along with modern front-end technologies. You will be responsible for designing, developing, testing, deploying, and maintaining end-to-end applications while working closely with product managers, business analysts, QA engineers, DevOps teams, and other developers.
Core Responsibilities
- Design, develop, and maintain full-stack web applications using C#, .NET / .NET Core, ASP.NET Core, and Web API.
- Build responsive and user-friendly front-end applications using React, Angular, Blazor, or similar modern JavaScript/C# frameworks.
- Develop scalable RESTful APIs and integrate third-party services and enterprise systems.
- Design and optimize relational databases using SQL Server, including tables, stored procedures, views, functions, and queries.
- Implement secure authentication and authorization using technologies such as OAuth 2.0, OpenID Connect, JWT, and ASP.NET Core Identity.
- Process and transform large fixed-width and delimited (CSV/flat) input files as part of data integration and batch workflows.
- Generate large, well-structured XML output and associated XSD schemas for downstream systems and partners.
- Integrate with document/PDF generation platforms such as Quadient, Exstream, or SmartCOMM to support customer communications.
- Write clean, maintainable, reusable, and well-tested code following established coding standards and design patterns.
- Participate in architecture and technical design discussions and contribute to application modernization initiatives.
- Develop unit, integration, and automated tests to ensure application quality and reliability.
- Troubleshoot and resolve application defects, performance issues, and production incidents.
- Work with DevOps teams to support CI/CD pipelines, automated deployments, monitoring, and cloud infrastructure.
- Collaborate with cross-functional teams to understand requirements and translate them into technical solutions.
- Conduct code reviews and provide constructive feedback to team members.
- Create and maintain technical documentation, API documentation, and development standards.
- Stay current with emerging technologies and recommend improvements to development practices and application architecture.
Required Qualifications
Backend
- Strong proficiency in C#
- Hands-on experience with .NET / .NET Core
- Strong experience with ASP.NET Core
- Experience developing RESTful Web APIs
- Knowledge of Entity Framework Core
- Understanding of dependency injection, middleware, configuration, logging, and application lifecycle
- Good understanding of object-oriented programming and SOLID principles
- Experience with common design patterns and clean architecture principles
- Experience processing large fixed-width and delimited input files
- Experience generating large XML files and XSD schemas
- Experience integrating with PDF generation software such as Quadient, Exstream, SmartCOMM, or similar
Frontend
- Strong experience with JavaScript / TypeScript
- Hands-on experience with at least one modern framework: React, Angular, Vue.js, or Blazor (C#-based)
- Strong knowledge of HTML5, CSS3, and responsive web design
- Experience consuming REST APIs and handling client-side state
- Familiarity with frontend build tools and package managers such as npm
Database
- Strong experience with Microsoft SQL Server
- Proficiency in writing complex SQL queries
- Experience with stored procedures, functions, views, indexes, and query optimization
- Understanding of database design, normalization, transactions, and performance tuning
- Experience with Entity Framework Core or another ORM
Cloud & DevOps
- Experience with Microsoft Azure or another major cloud platform
- Familiarity with Azure services such as Azure App Service, Azure Functions, Azure SQL, Azure Storage, Azure Key Vault, and Azure Service Bus
- Experience with CI/CD pipelines
- Familiarity with Git-based source control and branching strategies
- Experience with Docker and containerization is a plus
- Understanding of application monitoring, logging, and observability
Testing & Quality
- Experience with unit testing using frameworks such as xUnit, NUnit, or MSTest
- Understanding of integration and API testing
- Familiarity with mocking frameworks such as Moq
- Experience with automated testing and continuous integration
- Strong understanding of secure coding and application performance practices
Preferred Skills
- Experience with microservices architecture
- Knowledge of Azure DevOps or GitHub Actions
- Experience with Docker and Kubernetes
- Knowledge of messaging technologies such as Azure Service Bus, RabbitMQ, or Kafka
- Experience with Redis or other caching technologies
- Knowledge of GraphQL is a plus
- Familiarity with Elasticsearch or similar search technologies
- Experience with Agile/Scrum development methodologies
- Understanding of Domain-Driven Design (DDD)
- Experience with application performance monitoring tools
- Knowledge of AI/ML integrations or consuming LLM APIs is a plus
Qualifications
- Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field, or equivalent practical experience.
- 3–7+ years of professional software development experience, depending on level.
- Strong hands-on experience with the .NET ecosystem and modern frontend development.
- Demonstrated experience delivering production-grade web applications.
- Strong analytical, problem-solving, and debugging skills.
- Excellent communication and collaboration skills.
What We're Looking For
- A strong problem solver with excellent attention to detail.
- Comfortable working across both frontend and backend technologies.
- Able to take ownership of features from requirements through deployment.
- Passionate about writing clean, maintainable, and scalable code.
- Comfortable working in a collaborative Agile environment.
- Able to communicate technical concepts effectively to both technical and non-technical stakeholders.
Typical Technology Stack
- Backend: C#, .NET 8/9+, ASP.NET Core, Web API, Entity Framework Core
- Frontend: React / Angular / Blazor, TypeScript, JavaScript, HTML5, CSS3
- Database: Microsoft SQL Server
- Cloud: Microsoft Azure
- DevOps: Azure DevOps / GitHub Actions, CI/CD, Docker
- Testing: xUnit / NUnit, Moq, Postman
- Version Control: Git / GitHub / Azure Repos
- Architecture: REST APIs, Microservices, Clean Architecture, SOLID, Design Patterns
- Data & Documents: Fixed-width & delimited file processing, XML/XSD generation, PDF/document composition (Quadient, Exstream, SmartCOMM)
Vacancy posted 9 hours ago
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