Dotnet Developer

Job Title: .NET Full Stack Software Engineer

Location: Rockville, MD/Tysons, VA (3 days onsite in a week) *Only Local Candidates required

Full stack experience in .NET, Javascript/react or similar, test automations, cloud, GenAI. React Native is a nice to have.:

• Backend .Net
• Frontend React Native, Javascript/Typescript, react)  IOS/Android and React Native. It is not the major requirements but we will give that candidate preference.
• Cloud/AWS
• AI, LLM (e.g., using GenAI as code assistant
• Automated testing ideally Selenium, Playwright or similar. Automated testing experience will really help since all engineers should be doing development and testing.

JD:

Senior Full Stack Software Engineer

We are seeking an experienced Senior Full Stack Software Engineer to join our team. The ideal candidate will have deep expertise in .NET Framework development (both backend and frontend), React Native mobile development, automated testing frameworks, and AWS cloud technologies. This role requires a versatile engineer who can maintain and enhance .Net applications while building modern mobile solutions.

Core Technical Requirements

.NET Full Stack Development (.NET Framework 4.7.2)

• Primary Backend: .NET Framework 4.7.2, C#, WCF Services,ASP.NET
• Primary Frontend:ASP.NETWeb Forms,ASP.NETMVC, Razor
• Related Technologies:

o UI Frameworks:ASP.NETWeb Forms (.aspx), Master Pages, User Controls (.ascx)

o AJAX: AJAX Control Toolkit, UpdatePanel, ScriptManager

o MVC:ASP.NETMVC 4.0/5.2.3, Razor view engine

o Client-Side: JavaScript, jQuery (1.7.2, 1.9.1, 3.2.1), jQuery UI, jQuery Validation

o CSS Frameworks: Semantic UI, jQuery UI themes, custom stylesheets

o Reporting: ActiveReports/MESCIUS ActiveReports (v10, v18)

o Web APIs: RESTful services, SOAP, WCF

o Databases: Oracle, PostgreSQL

o AWS Technology: AWS SQS & SES

o Modern Stack (for migration): .NET Core/.NET 6+,ASP.NETCore

Frontend Development (React Native)

• Primary: React Native, JavaScript/TypeScript, React
• Related Technologies:

o State Management: Redux, Redux Toolkit

o Navigation: React Navigation

o UI Components: React Native Paper, Native Base, React Native Elements

o Build Tools: Metro, Expo

o Mobile APIs: Camera, Geolocation, Push Notifications

o React Hooks & functional components

o Responsive design & cross-platform development (iOS/Android)

o Web: React.js, Next.js (bonus)

Testing & Quality Assurance

• Primary: Selenium, Playwright
• Related Technologies:

o Unit Testing: xUnit, NUnit, MSTest (for .NET), Jest, react-native-testing-library(for React/React Native)

o Integration Testing: Selenium, Appium, Playwright

o API Testing: Postman, SoapUI, Swagger

o Mocking: axios-mock-adapter, NSubstitute, Mock Service Worker

o Test Runners: TestNG, Cucumber

o Performance Testing: JMeter, Gatling

o Code Coverage: SonarQube

Cloud Technologies (AWS)

• Required: Experience designing, deploying, and maintaining applications on AWS cloud platform, including services such as EC2, ECS, S3, DMS, RDS, Lambda, CloudFormation

AI & LLM Technologies

• Primary: Experience leveraging AI-assisted development tools and Large Language Models for software engineering tasks

Related Technologies:

o AI-Powered Development: Amazon Q Developer, GitHub Copilot, Amazon CodeWhisperer, Tabnine, or similar AI code assistants

o Agentic AI: Experience with autonomous AI agents for development workflows

o AI Integration: REST APIs for LLM services, prompt engineering, context management

o AI Use Cases: Code generation, code review, documentation generation, test case creation, debugging assistance, refactoring support

Key Responsibilities

• Maintain and enhance existing .NET Framework 4.7.2 applications includingASP.NETWeb Forms, Master Pages, User Controls, and WCF Services
• Develop and maintain complex web UIs usingASP.NETWeb Forms, AJAX Control Toolkit, and jQuery
• Build and maintainASP.NETMVC components with Razor views
• Develop cross-platform mobile applications for iOS and Android using React Native
• Create and maintain reporting solutions using ActiveReports
• Build and maintain RESTful APIs, SOAP services, and WCF services
• Design and implement AWS cloud solutions with high availability and scalability
• Implement comprehensive automated testing strategies including unit, integration, and end-to-end tests
• Write clean, maintainable, and well-documented code following best practices
• Collaborate with product managers, designers, and other engineers to deliver high-quality solutions
• Actively participate in conduct code reviews
• Optimize application performance, security, and scalability across legacy and modern platforms
• Participate in architecture and design decisions, including modernization strategies
• Troubleshoot and resolve complex technical issues in both frontend and backend environments
• Contribute to DevOps practices and CI/CD pipeline improvements

Required Qualifications

• 7+ years of professional software development experience
• 3+ years of hands-on experience with .NET Framework, includingASP.NETWeb Forms and WCF Services
• Strong experience withASP.NETWeb Forms UI development (.aspx, Master Pages, User Controls)
• Proficiency with JavaScript, jQuery, and AJAX technologies
• Experience withASP.NETMVC and Razor view engine
• 3+ years of experience with React Native development
• 2+ years of experience with automated testing frameworks (Selenium, Playwright)
• 3+ years of experience with AWS cloud services
• Strong understanding of software design patterns and SOLID principles
• Experience with version control systems (Git/Bitbucket)
• Proficiency in SQL and database design
• Experience with Agile/Scrum methodologies
• Strong problem-solving and analytical skills
• Excellent communication and collaboration abilities

Preferred Qualifications

• Experience with AJAX Control Toolkit and advanced AJAX patterns
• Experience with ActiveReports or similar reporting frameworks
• Experience migrating legacy .NET Framework applications to .NET Core
• AWS certifications (AWS Solutions Architect, AWS Developer, or equivalent)
• Experience with containerization (Docker) and orchestration (Kubernetes, ECS)
• Experience with Infrastructure as Code tools (Terraform, CloudFormation)
• Familiarity with microservices and event-driven architecture
• Understanding of security best practices, OWASP guidelines, and AWS security
• Experience with CI/CD pipelines (Jenkins, GitHub Actions)
• Experience with monitoring and logging tools (AWS CloudWatch, Splunk)
• Knowledge of cost optimization strategies in AWS environments
• Contributions to open-source projects
• Bachelor's degree in Computer Science or related field (or equivalent experience)