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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Enterprise Application Developer (Full Stack) - **Company:** Exponent - **Location:** Philadelphia, PA, United States - **Experience:** Expert - **Salary:** $135,000 - $180,000 - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Multitier Architecture, Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Amazon S3, Data Analysis, Architectural Patterns, Automation of Tests, Microsoft Azure, Cloud Computing, Cloud Engineering, Software Quality, Data Validation, Data Security, DevOps, Distributed Systems, Fault Tolerance, Github, PostgreSQL, Machine Learning, Microsoft SQL Server, NoSQL, Open Web Application Security, Performance Tuning, Scrum Methodology, Query Optimization, Software Engineering, Systems Architecture, Web Applications, Enterprise Software Applications, Spring Cloud, ReactJS, Large Language Models, Database Optimization, AWS Lambda, Backend, Servicebus, Event Driven Architecture, Build Management, Amazon Relational Database Service, Solid Principles, Information Technology, Amazon Bedrock, Front End Software Development, Azure AI, Api Design, Restful APIs, Amazon Simple Queue Service (SQS), Serverless Computing, Microservices - **Published:** November 14, 2026 - **Apply:** https://diversityjobs.com/career/18933342/Senior-Enterprise-Application-Developer-Full-Stack-Pennsylvania-Philadelphia ## About the Role Full Stack Expertise * Strong experience building modern web applications with React (or similar frontend frameworks) * Deep expertise in backend development using .NET / ASP.NET Core * Proven ability to design and implement scalable system architectures, RESTful APIs, and cloud-integrated applications Cloud & AWS * Extensive experience designing and deploying solutions on AWS * Strong hands-on experience with serverless architectures and event-driven systems * Experience building and operating cloud-native applications in production environments Architecture & Systems Design * Proven experience designing distributed, scalable systems * Strong understanding of microservices, event-driven architectures, and system integration patterns * Ability to balance performance, scalability, maintainability, and cost in system design AI & Modern Tooling * Experience integrating AI/ML or LLM-based solutions into enterprise applications * Familiarity with platforms such as Amazon Bedrock, Azure AI, or similar * Experience using AI tools to enhance software development workflows Data & Persistence * Strong experience with relational and NoSQL databases (e.g., SQL Server, PostgreSQL, RDS) * Expertise in data modeling, query optimization, and database performance tuning DevOps & Agile * Experience with CI/CD pipelines and modern DevOps practices (GitHub, Azure DevOps) * Strong understanding of Agile methodologies (Scrum, Kanban) and iterative delivery Leadership * Excellent leadership, mentorship, and communication skills * Proven ability to collaborate effectively across cross-functional teams and deliver results in dynamic environments Presently legally authorized to work in the United States; no immigration sponsorship or processing required. Life @ Exponent ## Description We are currently seeking a Senior Enterprise Application Developer (Full Stack) to join our Information Technology team in any US office or remote from the US. In this role, you will work within a collaborative team of internal developers to design and deliver high-impact, business-critical applications across the full technology stack. You will take ownership of end-to-end solution delivery, spanning modern frontend development with React, backend services in .NET, and scalable, cloud-native architectures on Amazon Web Services. This role includes responsibility for system architecture, technical leadership, and hands-on development, with a strong emphasis on building and integrating AI-driven solutions, including applications powered by large language models and modern AI platforms. You will partner closely with business stakeholders and engineering teams to translate complex requirements into scalable, maintainable systems that deliver measurable value to the organization. You will be responsible for Full Stack Development * Design and build modern, responsive web applications using React and related ecosystems * Develop robust, scalable backend services using .NET / ASP.NET Core * Own features end-to-end, from user experience and frontend implementation to API design, data access, and persistence * Build intuitive, high-performance interfaces that enable complex workflows and data interactions AI-Driven Application Development * Design and implement applications leveraging LLMs and modern AI tooling * Integrate AI into core business workflows, including: + Document processing + Intelligent automation + Advanced data analysis * Utilize modern AI platforms (e.g., Amazon Bedrock, Azure AI APIs) to deliver production-grade solutions * Apply AI/ML techniques to enhance application capabilities, improve efficiency, and unlock new business value Cloud & Serverless Architecture * Architect, build, and deploy scalable, cloud-native solutions on Amazon Web Services * Design and implement event-driven and serverless systems, leveraging services such as: + AWS Lambda + Step Functions + ECS + S3, EventBridge, SQS + Bedrock/Agent Core * Ensure systems are resilient, cost-efficient, and optimized for performance at scale * Apply best practices for distributed systems, observability, and fault tolerance Architecture & Technical Leadership * Lead the design and development of scalable, mission-critical systems, including N-tier architectures * Define and evolve system architecture across frontend, backend, and cloud infrastructure * Interface directly with business stakeholders to gather requirements, translate needs into technical solutions, and ensure alignment with business objectives * Provide technical leadership across projects, guiding design decisions and ensuring engineering excellence * Mentor developers and foster a culture of continuous learning, collaboration, and high-quality delivery Engineering Excellence & Delivery * Apply best practices such as SOLID principles and modern architectural patterns * Operate within Agile SDLC frameworks (Scrum, Kanban) to deliver high-quality, maintainable solutions * Build and maintain CI/CD pipelines using GitHub and Azure DevOps, enabling automated testing and reliable deployments * Leverage AI-assisted development tools to improve developer productivity, automate testing, and enhance code quality * Implement secure coding practices aligned with industry standards (e.g., OWASP), including input validation, authentication/authorization, data protection, and vulnerability mitigation * Ensure applications meet security, compliance, and data protection requirements across all layers of the system * Oversee the ongoing support, performance optimization, and continuous improvement of enterprise applications