Senior .NET Full-Stack Engineer — AI-Driven Enterprise Apps

Cygnus Professionals Inc.; Harrisburg (Dauphin County); On-site; USD 120,000 - 190,000; Full time

Job summary

Cygnus Professionals Inc. is seeking a Senior Full Stack Developer to design, build, and evolve AI-enabled enterprise applications in a 100% onsite role in Harrisburg, PA.

The candidate will lead development across front-end and back-end stacks, integrate cloud-native architectures, and apply AI-assisted tooling to improve productivity, code quality, and deployment velocity. The ideal candidate brings 10+ years of hands-on software development experience, deep expertise in RESTful APIs,

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or related field.
• Minimum 10 years of professional software development experience, including hands-on full stack work.
• Experience delivering complex enterprise applications in cross-functional IT environments.
• Strong understanding of cloud-native architecture and API-driven integration.

Responsibilities

• Design, develop, test, deploy, and maintain enterprise-grade web applications.
• Develop back-end services using .NET/C#, Node.js and implement RESTful APIs.
• Design and implement microservices and event-driven integrations.
• Modernize legacy apps and integrate with cloud platforms.
• Lead architectural reviews, design sessions, and code reviews.
• Collaborate with stakeholders and enterprise teams in Agile ceremonies.

Skills

Full stack development

RESTful APIs

Microservices

Node.js

.NET/C#

AI-powered tools

Azure

DevOps

SQL Server

Education

Bachelor's degree in Computer Science/Software Engineering/Information Technology

Tools

GitHub Copilot

ChatGPT / OpenAI

Claude

Cursor / Windsurf

Azure AI Foundry / Azure OpenAI

Azure DevOps

GitHub Actions

Docker

Kubernetes

Job description

Cygnus Professionals Inc. is seeking a Senior Full Stack Developer to design, build, and evolve AI-enabled enterprise applications in a 100% onsite role in Harrisburg, PA.

The candidate will lead development across front-end and back-end stacks, integrate cloud-native architectures, and apply AI-assisted tooling to improve productivity, code quality, and deployment velocity. The ideal candidate brings 10+ years of hands-on software development experience, deep expertise in RESTful APIs,