Sr. Net Engineer

Valiant Technologies LLC; Wilmington (DE); Sur place; USD 140 000 - 190 000; Plein temps

Résumé du poste

Valiant Technologies LLC is seeking a skilled software engineer to design, develop, and maintain scalable applications using C# and .NET Core. You will build modern web interfaces with Blazor, leverage AI-assisted tools, and implement AI-enabled SDLC workflows.

You will optimize data models with EF Core and SQL Server, develop serverless Azure Functions, and ensure robust testing with Playwright. Collaboration in Agile teams and CI/CD delivery is essential for success.

Qualifications

• Experience designing scalable C#/.NET applications in a distributed environment.
• Proficient with Blazor and modern front-end frameworks for responsive UI.
• Experience with AI-assisted development tools (e.g., Copilot, Claude) to improve code quality.
• Strong data modeling with EF Core and SQL Server for scalable apps.
• Experience building serverless Azure Functions and related patterns.
• Translate business requirements into scalable, maintainable technical solutions.
• Design AI-enabled SDLC workflows with measurable efficiency gains.
• Experience with automated UI/API/database testing using Playwright.
• Participate in Agile teams, CI/CD, code reviews, and cross-functional delivery.
• Troubleshoot performance and testing issues; improve automation frameworks.

Responsabilités

• Participate in sprint planning, code reviews, testing, and CI/CD processes.
• Develop and maintain scalable, modular applications in C#/.NET.
• Build AI-enabled workflows and agentic patterns within the platform.
• Optimize data models, schemas, and application performance.
• Develop automated UI, API, and database tests with Playwright.
• Collaborate with cross-functional teams to deliver high-quality software.

Connaissances

C#/.NET

Blazor

AI-assisted development

Entity Framework Core

Azure Functions

SQL Server

Bootstrap UI

Agile development

AI-enabled workflows

Playwright

LLM architecture

Prompt engineering

Outils

GitHub Copilot

Cursor

Claude Code

Playwright

Artillery/JMeter/K6/Locust

Azure OpenAI Service

Azure AI Foundry

Semantic search

Vector databases

Description du poste

What technical skills, experience and qualifications do you need?

• 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.

Core Development & SDLC:

• 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.