Full Stack Developer

Full Stack Developer CrossTech is seeking a Full Stack Developer on an ongoing basis to design, develop, and maintain enterprise web applications and APIs that enable digital business operations. The ideal candidate will bring strong experience in both front-end and back-end development, using.NET and modern JavaScript frameworks to deliver scalable, secure, and high-performing solutions.

This role will collaborate closely with application architects, DevOps engineers, and database administrators to build integrated, cloud-ready systems that support core business functionality. The Full Stack Developer will participate in all phases of the software development lifecycle, from requirements analysis and design to deployment and support.

Key Responsibilities Design, develop, and maintain applications using the.NET framework and modern JavaScript frameworks (e.g., Angular, React, or Vue.js)

Build and manage RESTful APIs, microservices, and backend integrations using.NET Core or ASP.NET MVC

Develop responsive web interfaces with HTML, CSS, and JavaScript following modern UX best practices

Collaborate with business stakeholders to understand requirements and translate them into technical solutions

Ensure application reliability, scalability, and performance through proactive optimization and tuning

Participate in Agile ceremonies and contribute to sprint planning, peer code reviews, and daily scrums

Work with Azure DevOps, Git, or other CI/CD tools to manage code, automate builds, and deploy applications

Develop and maintain architecture diagrams, technical documentation, and design specifications

Ensure compliance with enterprise architecture, security, and data protection standards

Stay current with emerging technologies and recommend improvements to existing systems

Required Qualifications Bachelor's degree in Computer Science, Software Engineering, or related field — or equivalent experience

8+ years of experience in full-stack application development within enterprise environments

Strong expertise in ASP.NET MVC,.NET Core, C#, Entity Framework, and SQL Server

Proficiency in front-end frameworks such as Angular, React, or Vue.js

Hands-on experience with RESTful API and WCF service development

Strong understanding of object-oriented design, SOLID principles, and software design patterns

Familiarity with Agile methodologies, DevOps practices, and tools such as Jenkins, Azure DevOps, or GitHub Actions

Experience optimizing application performance and debugging complex issues

Excellent problem-solving, analytical, and communication skills

Ability to manage multiple priorities and deliver results in a fast-paced, collaborative environment

Preferred Qualifications Experience with cloud platforms (Azure, AWS, or GCP) and containerization (Docker, Kubernetes)

Familiarity with CI/CD pipelines and Infrastructure as Code (IaC)

Experience integrating with third-party APIs or enterprise data systems

Domain experience in healthcare or insurance is a plus

Compensation: Competitive compensation and comprehensive benefits

Location: Philadelphia, PA