Full Stack Developer

Full Stack Developer Location: Vienna, VA (Hybrid - 3 days onsite/week) Duration: Contract Pay: $70–75/hr (Vienna, VA) | $64–70/hr (Pensacola, FL) Experience: 10+ Years Work Authorization: US Citizens, Green Card Holders, TN Visa, Green Card EAD Seeking a senior Full Stack Developer with extensive experience designing, developing, modernizing, and supporting enterprise applications. The ideal candidate will have expertise across the Microsoft technology stack, modern frontend frameworks, cloud platforms, databases, and API integrations while working throughout the SDLC. This role involves modernizing legacy applications, developing custom solutions, collaborating with business stakeholders, and supporting production environments. Required Technical Skills Backend C# .NET Framework / .NET Core ASP.NET REST APIs Microservices Frontend React.js JavaScript TypeScript (preferred) HTML5 CSS3 Database SQL Server SQL MongoDB Cloud & Integration Microsoft Azure Azure Cloud Services Azure DevOps MuleSoft REST APIs Development Tools Git CI/CD Visual Studio Azure DevOps Pipelines Core Experience End-to-end Full Stack Development Enterprise Application Development Legacy Application Modernization SDLC Production Support UAT Application Deployment System Integration Performance Optimization Root Cause Analysis Business Requirements Analysis Technical Documentation Agile/Scrum Responsibilities Design, develop, test, and deploy enterprise full-stack applications. Build scalable web applications using C#, .NET, React, JavaScript, SQL Server, MongoDB, Azure, and MuleSoft. Modernize legacy applications into modern architectures. Translate business requirements into technical solutions. Develop APIs and integrations with enterprise systems. Support application deployments across development, testing, and production environments. Participate in UAT, release management, and production support. Perform root cause analysis and troubleshoot production issues. Create technical documentation throughout the SDLC. Collaborate with business users, architects, QA, and project teams. Required Qualifications 10+ years of Full Stack Development experience. Strong expertise in C#, .NET, React, JavaScript. Experience with SQL Server and MongoDB. Azure Cloud development experience. Experience integrating applications using MuleSoft or REST APIs. Experience modernizing legacy applications. Strong SDLC knowledge. Experience supporting enterprise production applications. Excellent analytical, communication, and problem‑solving skills. Bachelor's degree in Computer Science, Information Technology, or related field. Preferred Qualifications Experience with Navy Federal systems. Experience with Project Portfolio Management (PPM). Master's degree. Financial services experience. Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply. #J-18808-Ljbffr