Sr. .NET Developer - USC or Green Card is a Must - FULL TIME POSITION

Career Developers Inc., a distinguished staffing and consulting firm, is proud to celebrate 30 years of service excellence. As a GSA Contract holder, we offer comprehensive staffing solutions for both commercial and government sectors nationwide. By selectively partnering with clients who share our values, we ensure productive collaborations that set us apart in the industry. Our dedication to candidates involves managing expectations with precision through business intelligence, thorough interview preparation, transparent communication, and exceptional feedback throughout the process.

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Senior Full-Stack Software Developer – .NET, React, Python & AI
White Plains, NY or New York, NY
Remote with on-site presence 1–2 times per month
Salary: $160,000 - $180,000Must Have

• 5 years of related software development experience in a professional services or enterprise application development environment.
• Strong hands-on development experience with C# and .NET.
• Experience building modern front-end applications using ReactJS and TypeScript/JavaScript.
• Experience with Python development.
• Strong experience designing and developing enterprise applications, APIs, application logic, database structures, and system integrations.
• Experience translating business requirements into scalable, maintainable technical solutions.
• Ability to contribute to application architecture and technical design decisions.
• Experience with code reviews, debugging, performance optimization, testing, and software development best practices.
• Strong communication and cross-functional collaboration skills with the ability to work effectively with product owners, data teams, business stakeholders, DevOps, infrastructure, and other technical teams.
• Bachelor's degree in Computer Science or a related field.

Responsibilities

• Design and develop complex enterprise application components, including APIs, application logic, database structures, integrations, and modern web-based user interfaces.
• Build and enhance full-stack applications using C#, .NET, ReactJS, TypeScript, and Python.
• Participate in the architecture and technical design of modern enterprise applications and contribute to decisions around scalability, performance, maintainability, and integration.
• Develop AI-enabled application capabilities, including integrations with large language models (LLMs), semantic search, and Retrieval-Augmented Generation (RAG) where appropriate.
• Lead complex development assignments and support architectural initiatives across multiple application workstreams.
• Translate business and functional requirements into scalable technical designs and production-quality solutions.
• Collaborate with product owners, data teams, business stakeholders, developers, database administrators, DevOps, and infrastructure teams throughout the application lifecycle.
• Support modernization initiatives for existing enterprise applications, including debugging, performance optimization, integration improvements, and technical upgrades.
• Participate in code reviews and help maintain engineering standards, development patterns, testing practices, and overall code quality.
• Provide technical guidance and mentorship to junior developers.
• Create and maintain system designs, technical specifications, architecture diagrams, and operational documentation.
• Support CI/CD pipelines, deployment strategies, QA, interoperability testing, and post-implementation monitoring.
• Stay current with modern software engineering frameworks, development methodologies, and AI-enabled application technologies.

RequirementsRequired

• Bachelor's degree in Computer Science or a related field.
• Minimum 5 years of related technical experience in professional services or enterprise application development.
• Strong hands-on experience with C#/.NET.
• Full-stack development experience with ReactJS and TypeScript/JavaScript.
• Experience developing solutions with Python.
• Experience developing enterprise APIs, integrations, application logic, and data-driven applications.
• Understanding of modern software architecture, development patterns, testing, and application lifecycle practices.
• Experience participating in technical design and architecture discussions.
• Strong troubleshooting, debugging, and performance optimization skills.
• Ability to communicate technical concepts clearly and collaborate with both technical and business stakeholders.
• Ability to work effectively across multidisciplinary teams.

Relevant/Highly Valuable Experience

• Hands-on exposure to AI-enabled application development.
• Experience integrating applications with LLMs.
• Knowledge of Retrieval-Augmented Generation (RAG) architectures and semantic search.
• Experience with CI/CD, DevOps practices, and modern deployment strategies.
• Experience modernizing established enterprise applications.
• Professional services experience.
• Experience mentoring or providing technical guidance to other developers.

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