.NET Software Developer

Valiant Technologies LLC; Wilmington (DE); On-site; USD 90,000 - 130,000; Full time

Job summary

Valiant Technologies LLC seeks skilled .NET Software Developers to design, build, and maintain robust solutions for Global Trust and Agency capabilities. You will work on a global platform, building scalable C#/.NET Core applications and modern front-ends with Blazor, while leveraging AI-assisted tools to boost code quality and speed.

Responsibilities include implementing EF Core data models, SQL Server tuning, serverless Azure Functions, and responsive UI with Bootstrap in an Agile team.

Qualifications

• Strong grounding in OOP principles and developing maintainable, scalable code.
• Proficiency in SQL Server, including scripting, execution-plan analysis, indexing, and query tuning.
• Experience building scalable, modular applications with C# and .NET Core.
• Proficiency in at least one modern front-end framework (Blazor, React, Angular, or Vue).
• Proficiency with JavaScript and/or TypeScript for modern web development.
• Practical use of AI-assisted development tools such as GitHub Copilot, Cursor, or Claude Code.
• Hands-on experience with Azure Functions or other serverless technologies.
• Proficiency in responsive UI development using Bootstrap.
• Familiarity with Git, CI/CD pipelines, and collaborative workflows.
• Experience in Agile/Scrum environments.
• Nice-to-have: MediatR, Clean Architecture, Fluxor, Polly.
• Nice-to-have: Docker and Kubernetes.

Responsibilities

• Design, develop, and maintain modular applications using C# and .NET Core.
• Build modern web apps with Blazor Server/WebAssembly or similar frameworks.
• Apply AI-assisted development tools to improve quality and efficiency.
• Design data models with EF Core and SQL Server.
• Develop serverless solutions with Azure Functions.
• Create responsive UI using Bootstrap.
• Translate requirements into scalable solutions within Agile teams.
• Design and support AI-enabled apps and intelligent workflows.
• Evaluate and optimize AI-augmented SDLC practices.
• Develop automated UI/API/database tests with Playwright.
• Participate in sprint planning, code reviews, and CI/CD activities.
• Troubleshoot issues and improve test reliability.
• Collaborate with cross-functional teams to deliver quality software.

Skills

C#/.NET Core

Blazor

Entity Framework

SQL Server

Azure Functions

Bootstrap

JavaScript/TypeScript

AI-assisted development

GitHub Copilot

CI/CD

Agile/Scrum

Docker

Kubernetes

MediatR

Clean Architecture

Tools

Git

Azure

Playwright

React/Angular/Vue

Job description

We are seeking skilled .NET Software Developers to join our customer’s engineering team. In these roles, you will design, build, and maintain robust solutions for our customer’s Global Trust and Agency business domain. The ideal candidate brings strong .NET expertise, a commitment to code quality, and the ability to collaborate effectively across cross-functional teams.

Global Trust and Agency provide trustee, agency, and fiduciary services across structured finance, debt capital markets, and corporate trust transactions worldwide. This role supports development of a global platform within the Global Trust and Agency domain enabling our customer’s global operations.

Some of the things you’ll be doing:

• Design, develop, and maintain scalable, modular applications using C# and .NET Core.
• Build and enhance modern web applications using Blazor Server, Blazor WebAssembly, or similar front-end frameworks.
• Leverage AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude Code) to improve code quality, testing, refactoring, and development efficiency.
• Design and optimize data models, database schemas, and application performance using Entity Framework Core and SQL Server.
• Develop and maintain serverless solutions using Azure Functions or comparable technologies.
• Create responsive and user-friendly interfaces using Bootstrap or similar CSS frameworks.
• Translate business requirements into scalable, maintainable technical solutions within Agile development teams.
• Design, build, and support AI-enabled applications, agents, and intelligent workflows.
• Evaluate, implement, and optimize AI-augmented software development lifecycle (SDLC) practices.
• Develop and maintain automated testing solutions for UI, API, and database validation using Playwright and related technologies.
• Participate in sprint planning, code reviews, testing, CI/CD processes, and collaborative software delivery activities.
• Troubleshoot application, performance, and testing issues, including test reliability and automation framework improvements.
• Collaborate with cross-functional teams to deliver high-quality software and drive continuous improvement initiatives.

What technical skills, experience and qualifications do you need? Core Development & SDLC:

• Strong grounding in OOP principles and developing high-quality, maintainable, scalable code Strong understanding of data modeling, migrations, LINQ, and performance optimization with Entity Framework Core
• Proficiency in SQL Server, including scripting, execution-plan analysis, indexing, and query tuning
• Experience building scalable, modular applications with C# and .NET Core
• Proficiency in at least one modern front-end framework for building responsive, interactive web applications (e.g., Blazor, React, Angular, or Vue)
• Proficiency with JavaScript and/or TypeScript for modern web application development
• Practical use of AI-assisted development tools such as GitHub Copilot, Cursor, or Claude Code for code generation, refactoring, testing, and review
• Hands-on experience with Azure Functions or comparable serverless technologies
• Proficiency in responsive UI development using Bootstrap or similar CSS frameworks
• Familiarity with Git, CI/CD pipelines, and collaborative development workflows
• Experience working in Agile/Scrum environments and delivering moderate- to high-complexity work within sprint cycles
• Preferred: familiarity with MediatR, Clean Architecture, Fluxor (or similar state-management libraries), and resilience patterns such as Polly
• Preferred: experience with containers and orchestration technologies such as Docker and Kubernetes

AI & Intelligent Systems:

• Experience with LLM architecture, prompt engineering, RAG, semantic search, vector databases, and agentic AI patterns
• Hands-on experience building AI agents or AI-enabled workflows for development, QA, performance testing, or security automation
• Strong knowledge of Azure AI Foundry, Azure OpenAI Service, and modern AI/ML frameworks
• Ability to design and optimize AI-augmented SDLC workflows with measurable efficiency gains
• Ability to build and incorporate AI-enabled, streamlined platform workflows
• Familiarity with AI-assisted documentation practices and the ability to evaluate AI-generated output, including awareness of model limitations and risks

Test Automation & Quality Engineering:

• Experience with test parallelization, test-data management, and flaky-test triage
• Preferred: proficiency with Playwright for UI, API, and database testing, including mocking
• Preferred: experience with performance-testing tools such as Artillery, JMeter, K6, or Locust
• Preferred: experience in a risk-based, automation-first engineering environment

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.