Tech Consulting - Full-Stack C# Developer - Senior

Location:

Los Angeles, New York City, Hoboken, San Francisco, San Jose, Seattle, Boston, Chicago, St. Louis, Philadelphia, Dallas, Houston, Irvine, San Diego, Portland, Denver, Minneapolis, Nashville, Phoenix, Pittsburgh, McLean, Atlanta, Charlotte, Detroit, Columbus, Cleveland, Akron, Cincinnati, Miami

At EY, we’re all in to shape your future with confidence.

We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go. Join EY and help to build a better working world.

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.

As a Senior in Application Design and Development, you will lead the effective management and delivery of processes, solutions, and projects, ensuring a strong focus on quality and risk management. This role presents exciting challenges and opportunities for growth, allowing you to apply your expertise in guiding others and recommending quality solutions. You will engage regularly with external clients, actively participating in working sessions and leading work streams from planning through execution and closure.

Travel may be required as needed by external clients.

• 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.

To thrive in this role, you will need a blend of technical and business skills that will make a significant impact. Your ability to build and manage relationships, communicate effectively, and lead teams will be essential.

• 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 Type Script, 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…