C# Fullstack Engineer - Senior - Consulting - Location OPEN

EY•Hartford, DC

1d•$102,500 - $213,400•Hybrid

About The Position

As a Senior Full Stack Software Engineer, you will independently develop, test, and maintain high-quality software solutions across the technology stack. You will work closely with multidisciplinary teams to deliver scalable, secure, and production-ready applications that are increasingly shaped by intelligent, data-driven capabilities. In this role, engineers are expected to approach problem-solving with a modern mindset, considering how automation, AI-assisted workflows, and intelligent features can improve system design, developer productivity, and user experience. You will help shape solutions where AI is treated as a core design consideration rather than an afterthought, while maintaining strong software engineering fundamentals. The role values adaptability across programming languages and platforms, comfort working across frontend and backend systems, and the ability to apply sound engineering judgment in evolving technical landscapes. You will take ownership of your work, contribute to system design decisions, and support solutions from inception through launch and ongoing evolution. At EY, we partner with the world’s leading organizations to adopt emerging technologies responsibly and effectively. We believe in transforming how companies operate by asking better questions, applying engineering rigor, and delivering trusted, intelligent solutions that scale.

Requirements

Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent experience
3 or more years of professional software engineering experience
Proficiency in at least one modern backend programming language, such as Python, Java, C#, or JavaScript or TypeScript
Experience with full stack development and one or more backend frameworks or technology ecosystems
Working knowledge of modern frontend frameworks such as React, Angular, or equivalent
Experience designing and implementing RESTful APIs
Strong database skills across relational and non-relational data stores, including query optimization
Experience using Git-based version control and collaborative development workflows
Comfort working in local and cloud environments, including command-line tooling and system configuration
Ability to independently identify, debug, and resolve issues
Strong written and verbal communication skills
Willingness and ability to travel based on client needs, up to approximately 25 percent

Nice To Haves

Experience building and operating cloud-native or microservices-based applications, preferably on Azure or similar cloud platforms
Hands-on exposure to cloud services for compute, data, identity, and monitoring
Familiarity with service-oriented, API-driven, and distributed system architectures, including event-driven patterns
Experience with containerization and orchestration technologies such as Docker and Kubernetes
Experience designing or integrating intelligent application capabilities, including large language models, embeddings, or retrieval-based approaches
Comfort designing systems where AI-driven capabilities are considered early, with an understanding of when AI is appropriate versus traditional deterministic logic
Familiarity with AI-assisted development workflows, agent-based patterns, or orchestration approaches
Understanding of security, identity, and access management in cloud environments
Familiarity with CI/CD pipelines, DevOps practices, and production observability
Experience supporting applications post-launch in enterprise or regulated environments

Responsibilities

Develop solutions to complex problems, recommending changes to policies and establishing procedures that impact your work area.
Exercise judgment in selecting methods, techniques, and evaluation criteria for obtaining results.
Provide direction and feedback to team members, ensuring successful task completion.
Independently design, develop, test, and deploy end-to-end applications with a focus on scalability, security, and reliability
Build and maintain backend services and APIs using modern backend programming languages such as Python, Java, C#, or JavaScript or TypeScript, across technology ecosystems including Node.js, Spring, and .NET
Implement new features and enhancements across frontend and backend systems while optimizing performance
Contribute to building and shipping intelligent application features, including integrations with large language models, predictive capabilities, and agent-driven workflows
Collaborate with cross-functional teams to refine requirements and translate them into technical designs and functional code
Contribute to system and application architecture, including data models, integrations, security, and cloud deployment considerations
Participate fully in agile delivery, including sprint planning, refinement, reviews, demos, and retrospectives
Conduct code reviews and help establish high standards for code quality, testing, and maintainability
Create and maintain technical documentation aligned with best practices across the software development lifecycle
Identify, troubleshoot, and resolve issues across development and production environments
Mentor junior engineers and contribute to a collaborative, high-performing engineering culture
See projects through from inception to launch and continued evolution in partnership with EY and client leadership