Sr. Full Stack Engineer (Front End Focused) - Hybrid NYC

Sr. Full Stack Engineer (Front End Focused) - Hybrid NYC

Job Overview

Location: New York, New York (Hybrid)

Employment Type: W2

Candidate Pay Rate: $56

Experience: 8+ years

About the Role

• We are seeking an experienced Senior Full Stack Engineer with a strong focus on Frontend Architecture to design, build, and maintain scalable web and mobile applications.
• The ideal candidate brings deep expertise in modern frontend frameworks (React, Angular), solid full-stack integration capabilities (C# .NET, Python APIs), and experience delivering responsive, secure, and highly accessible user experiences.
• This role will establish frontend standards, develop reusable UI frameworks, and ensure seamless integration with our enterprise backend services and identity systems.

Responsibilities

• Lead frontend technical design, establish development standards, build reusable component libraries, and promote UI/UX best practices.
• Develop responsive single-page applications (SPAs) and integrate them seamlessly with backend microservices and RESTful APIs.
• Support cross-platform or native mobile application development to deliver a cohesive experience across web and mobile surfaces.
• Optimize applications for maximum speed, scalability, cross-browser compatibility, and strict WCAG accessibility compliance.
• Implement and maintain robust frontend security measures, including modern token-based authentication (OAuth2/OIDC, JWT) and secure session management.
• Partner closely with UX/UI designers, product owners, and backend teams. Mentor junior and mid-level developers through constructive code reviews.

Required Qualifications

• 8+ years of professional software development experience, with a proven track record of leading frontend architecture for enterprise web applications.
• Deep, advanced knowledge of TypeScript, React, and/or Angular, alongside modern HTML5, CSS3, and SCSS.
• Strong experience consuming and integrating with backend APIs built on C# .NET (.NET Core/.NET 8+) or Python.
• Experience with Git workflows, package managers (npm/yarn), and frontend build tools (Webpack, Vite).
• Deep experience implementing and enforcing strict WCAG accessibility compliance in web applications.
• Practical experience managing frontend session states, handling token lifecycles (silent refresh, JWT management), and integrating with enterprise Identity Providers (Active Directory, Okta, etc.).
• Experience working within collaborative, Agile/Scrum environments.

Preferred Qualifications

• Experience with native mobile development (Swift for iOS / Kotlin for Android) OR cross-platform mobile frameworks (React Native, MAUI, Flutter).
• Familiarity supporting legacy web patterns (e.g., .NET Framework 4.8.1 / MVC) during modernization phases.
• Experience with CI/CD pipelines (Azure DevOps, GitHub Actions) and container environments (Docker).
• Prior experience in a utility, energy, or highly regulated corporate environment.

Required Skills & Technologies

Primary Skills

• TypeScript
• React
• Angular
• HTML5
• CSS3
• SCSS
• C# .NET
• Python
• Git
• npm
• yarn
• Webpack
• Vite
• WCAG
• OAuth2
• JWT
• Agile
• Scrum

Secondary Skills

• Swift
• Kotlin
• React Native
• MAUI
• Flutter
• .NET Framework 4.8.1
• MVC
• Azure DevOps
• GitHub Actions
• Docker
• PWA
• Design Systems
• Component Libraries

How to Apply

To apply for this exciting opportunity, please contact:

Recruiter Contact: Show email

Phone: View phone number on product.excelhire.com

1. Update Your Resume: Please add any missing skills or certifications that align with the role.
2. Apply Online: Click the "Apply" button at the end of the job description and complete the required details.
3. Submit Supporting Documents: Upload a photo ID. If you are not a U.S. citizen or Green Card holder (GC-EAD), please include your work authorization details.
4. Confirmation: Once submitted, reply to this email to let me know. I'll review your updated materials and, if there's a match, schedule a video interview to discuss further.

We appreciate your time and interest in this opportunity. Our team will review your application carefully and respond promptly.