Senior Full Stack .Net Developer

Cygnus Professionals Inc.; Harrisburg (Dauphin County); Presencial; USD 120 000 - 190 000; Tempo integral

Resumo da oferta

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,

Qualificações

• 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.

Responsabilidades

• 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.

Conhecimentos

Full stack development

RESTful APIs

Microservices

Node.js

.NET/C#

AI-powered tools

Azure

DevOps

SQL Server

Formação académica

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

Ferramentas

GitHub Copilot

ChatGPT / OpenAI

Claude

Cursor / Windsurf

Azure AI Foundry / Azure OpenAI

Azure DevOps

GitHub Actions

Docker

Kubernetes

Descrição da oferta de emprego

Senior Full Stack Developer - AI-Enabled Enterprise Applications

Experience Required: 10+ Years

Work Location: Onsite - Harrisburg, PA

Work Arrangement: 100% Onsite (Mandatory)

We are seeking a highly experienced, hands‑on Senior FullStack Developer with 10+ years of software development experience to design, develop, integrate, and maintain scalable, secure, high-performance enterprise applications.

The ideal candidate will possess deep expertise in modern front-end and back-end technologies, cloud-native architecture, API development, database management, and enterprise systems integration. The candidate must also demonstrate practical experience leveraging AI-powered development tools, Generative AI, and intelligent automation to improve software engineering productivity, code quality, testing, and application capabilities.

This is a 100% onsite position, requiring close collaboration with enterprise application teams, business stakeholders, architects, and IT leadership.

Key Responsibilities

1. Full Stack Application Development

• Design, develop, test, deploy, and maintain enterprise-grade web applications.
• Develop robust back-end services using technologies such as .NET/C#, Node.js
• Design and implement RESTful APIs, microservices, and event-driven integrations.
• Apply object-oriented programming, design patterns, SOLID principles, and clean architecture.
• Modernize legacy applications and integrate them with cloud-based platforms.
• Participate in architectural reviews, technical design sessions, and code reviews.

2. AI-Powered Software Engineering

• Actively utilize AI-assisted development tools to accelerate application development, debugging, refactoring, documentation, and testing.
• Demonstrate hands‑on experience with tools such as:
• GitHub Copilot - AI-assisted coding, code generation, refactoring, and unit test creation.
• ChatGPT / OpenAI - Technical problem-solving, code optimization, API integration, and development productivity.
• Claude - Code analysis, technical documentation, and development assistance.
• Cursor / Windsurf - AI-native development environments and agent-assisted coding.
• Microsoft Azure AI Foundry / Azure OpenAI - Enterprise AI application development and integration.
• Evaluate and implement AI-based development workflows to improve engineering efficiency and software quality.
• Develop AI-enabled application features using LLM APIs, prompt engineering, Retrieval-Augmented Generation (RAG), and enterprise knowledge integration.
• Understand AI agent frameworks, function calling, vector databases, and AI orchestration patterns.
• Ensure AI-generated code meets organizational security, compliance, performance, and quality standards.
• Promote responsible AI usage, including protection of confidential information, human review of AI-generated outputs, and secure handling of enterprise data.
• Design and develop integrations across enterprise platforms, SaaS applications, and internal systems.
• Build secure APIs and integration services using REST, JSON, OAuth 2.0, and OpenID Connect.
• Work with enterprise platforms such as Microsoft Dynamics 365, Salesforce, SAP, Oracle, or other business applications, as applicable.
• Develop automated workflows and integrations using Azure Logic Apps, Azure Functions, Power Automate, or comparable technologies.
• Support data exchange, transformation, synchronization, and integration monitoring.
• Troubleshoot complex application and integration issues across multiple systems.

4. Cloud, DevOps, and Automation

• Design and deploy cloud-native applications using Microsoft Azure
• Implement CI/CD pipelines using Azure DevOps, GitHub Actions, Jenkins, or equivalent platforms.
• Work with Docker, Kubernetes, serverless computing, and infrastructure-as-code technologies.
• Implement automated unit, integration, regression, and API testing.
• Utilize AI-assisted testing tools to improve test coverage and identify defects.
• Monitor application performance, security, availability, and operational reliability.
• Support secure software delivery practices, including DevSecOps and vulnerability remediation.

5. Database and Data Engineering

• Work with SQL Server
• Develop complex queries, stored procedures, data models, and performance optimization strategies.
• Implement secure data access and integration patterns.
• Support data pipelines and AI-ready data architectures where required.

6. Technical Leadership and Collaboration

• Serve as a senior technical contributor and mentor to development team members.
• Lead technical design discussions and recommend scalable engineering solutions.
• Collaborate with business analysts, solution architects, product owners, and enterprise application teams.
• Translate complex business requirements into maintainable technical solutions.
• Participate in Agile ceremonies, sprint planning, estimation, and delivery activities.
• Develop technical documentation, architecture diagrams, and implementation standards.
• Proactively identify opportunities to improve development processes through AI, automation, and reusable components.

Required Qualifications

Education and Experience

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related discipline, or equivalent practical experience.
• Minimum 10 years of professional software development experience, including significant hands‑on full stack development.
• Demonstrated experience designing and delivering complex enterprise applications.
• Strong experience working in cross-functional enterprise IT environments.

We believe in our commitment to diversity & inclusion.

Equal Employment Opportunity Statement

Cygnus is an Equal Opportunity Employer. We ensure that no one should be discriminated against because of their differences, such as age, disability, ethnicity, gender, gender identity and expression, religion, or sexual orientation.

All our employment decisions are taken without looking into age, race, creed, color, religion, sex, nationality, disability status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status, or any other aspects of employment protected by federal, state, or local law.

Applicants for employment in the US must have work authorization & Cygnus does not offer any sponsorship of a visa for employment authorization in the United States.