Senior .NET full stack developer

Active Alliance; King of Prussia (PA); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Active Alliance in King of Prussia, PA is seeking a Senior .NET full stack developer to drive enterprise-grade solutions.

You will lead and mentor a development team, modernize legacy systems to .NET Core, and deliver secure, scalable applications using Azure, REST services, and CI/CD.

The role requires 12–14 years of experience, hands-on expertise with ASP.NET Core, React, SQL Server, and a strong Agile mindset.

Qualifications

• 12+ years of professional experience as a Full Stack Developer.
• Strong hands-on experience with .NET Core / ASP.NET Core, C#, and Web API development.
• Proficiency in React.js, JavaScript (ES6+), HTML5, and CSS3.
• Experience with SQL Server and relational database design.
• Experience with RESTful services, microservices, and cloud integration (Azure or AWS).
• Familiarity with Agile/Scrum methodologies and DevOps practices (CI/CD pipelines, Git, containers, security).

Responsibilities

• Drive enterprise-grade .NET solutions from concept to deployment, providing technical leadership and mentoring in a fast-paced Agile environment.
• Design, development, and delivery of scalable .NET applications while guiding a development team and ensuring adherence to coding standards and architectural best practices.
• Modernize the legacy systems by migrating applications from .NET Framework to .NET Core, aligning with modern design and cloud practices.
• Oversee full-stack development using .NET Core and Angular/React, ensuring high-performance web applications and seamless integration across layers.
• Lead the development of secure, cloud-native applications using .NET Core and Azure, while ensuring CI/CD and DevOps best practices.
• Lead database solution design and implementation with MS SQL, including complex query and stored procedure development.
• Oversee ETL process development and deployment using SSIS.
• Implement reporting solutions using SSRS to meet organizational requirements.
• Provide technical leadership, mentorship, and conduct code reviews to ensure adherence to architectural standards and best practices.

Skills

NET Core

C#

Web API

React.js

JavaScript ES6

HTML5

CSS3

SQL Server

RESTful services

Microservices

Azure/AWS

CI/CD

Git

Agile/Scrum

DevOps

Job description

Title: Senior .NET full stack developer

Location: king of Prussia PA onsite (3 days to office 2 days remote) locals only no relocation

Mode of client interview: face to face at client office

Years of exp : 12-14 Years only not more than that

Job Duties

• Drive enterprise-grade .NET solutions from concept to deployment, providing technical leadership and mentoring in a fast-paced Agile environment
• Design, development, and delivery of scalable .NET applications while guiding a development team and ensuring adherence to coding standards and architectural best practices.
• Modernize the legacy systems by migrating applications from .NET Framework to .NET Core, aligning with modern design and cloud practices.
• Oversee full-stack development using .NET Core and Angular/React, ensuring high-performance web applications and seamless integration across layers
• Lead the development of secure, cloud-native applications using .NET Core and Azure, while ensuring CI/CD and DevOps best practices.
• Lead database solution design and implementation with MS SQL, including complex query and stored procedure development.
• Oversee ETL process development and deployment using SSIS.
• Implement reporting solutions using SSRS to meet organizational requirements.
• Provide technical leadership, mentorship, and conduct code reviews to ensure adherence to architectural standards and best practices.

Required Skills & Qualifications

• 12+ years of professional experience as a Full Stack Developer.
• Strong hands-on experience with .NET Core / ASP.NET Core, C#, and Web API development.
• Proficiency in React.js, JavaScript (ES6+), HTML5, and CSS3.
• Experience with SQL Server and relational database design.
• Strong understanding of object-oriented programming (OOP) and design patterns.
• Experience with RESTful services, microservices architecture, and cloud integration (Azure or AWS preferred).
• Familiarity with Agile/Scrum methodologies and DevOps practices (CI/CD pipelines, Git, containers, security).
• Excellent problem-solving, analytical, and communication skills.