Full Stack Developer - .NET (Intermediate)

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

The successful candidate should be:

• 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)