Senior Full Stack Software Engineer C#/.NET & React (onsite)

Position Overview

Build and maintain modern software solutions spanning on-premises infrastructure, cloud platforms, and hybrid environments. This role combines full-stack application development with APIs, microservices, cloud technologies, DevOps automation, and application security. You will collaborate with product managers, architects, developers, infrastructure teams, and other stakeholders to deliver scalable, secure, and maintainable business applications.

What You'll Do / Key Responsibilities

• Design, develop, and maintain software solutions using C#, .NET, and React across on-premises, cloud, and hybrid environments.

• Collaborate with product managers, architects, and developers to translate business requirements into technical specifications.

• Contribute to system architecture, focusing on scalability, performance, security, and maintainability.

• Build APIs, microservices, and front-end components, ensuring effective integration between front-end and back-end services.

• Use cloud platforms such as Microsoft Azure and AWS to develop and deploy solutions in cloud-native and hybrid environments.

• Implement DevOps practices, CI/CD pipelines, and automated deployment processes.

• Troubleshoot application performance, security, and availability issues across environments.

• Participate in code reviews and promote coding standards and software quality.

• Work with infrastructure and cloud teams to maintain stable, secure, and high-performing application environments.

• Support application transitions from on-premises infrastructure to cloud or hybrid architectures, collaborating with senior IT leadership on migration strategies.

• Monitor application performance and governance across environments and identify optimization opportunities.

• Help ensure applications comply with applicable industry regulations and internal security standards, including SOX, PCI-DSS, and other financial-sector regulations.

• Collaborate with cybersecurity teams to address application threats and vulnerabilities.

• Develop and maintain audit, risk assessment, and disaster recovery procedures for critical applications.

• Support QA processes aligned with applicable standards and regulatory requirements, including ISO, GDPR, and HIPAA where relevant.

• Maintain test documentation, including test plans, test cases, test scripts, and test data management.

• Support traceability between requirements and test cases, along with automated defect tracking and reporting.

• Stay current with relevant technology trends and frameworks, particularly in cloud and hybrid development.

Required Qualifications

• Education: Bachelor's degree in Computer Science, Software Engineering, or a related discipline.

• Experience: At least 7 years of proven experience as a Software Engineer, with strong hands-on C# and .NET skills.

• Experience with React or other modern JavaScript frameworks for front-end development.

• Experience with cloud platforms such as Microsoft Azure, AWS, or Google Cloud.

• Experience with DevOps practices, including CI/CD pipelines, containerization (e.g., Docker, Kubernetes), and automated deployments.

• Experience with version control systems such as Git and agile development methodologies such as Scrum or Kanban.

• Proficiency in building and maintaining systems across on-premises, hybrid, and cloud environments.

• Familiarity with microservices architecture, scalable APIs, and distributed systems.

• Strong knowledge of software design patterns, algorithms, and data structures.

• Strong problem-solving skills and the ability to troubleshoot and debug complex technical issues.

• Work authorization: Must be legally authorized to work in the United States without requiring, now or in the future, sponsorship for employment visa status.

Preferred Qualifications

• Relevant certifications, particularly Microsoft Certified: Azure Developer Associate or AWS Certified Developer.

• Experience with hybrid cloud strategies and solutions.

• Experience working in multidisciplinary teams and collaborating with architects, business analysts, and stakeholders.

• Familiarity with Azure DevOps and other DevOps tools for CI/CD and automation.

• Knowledge of relational and non-relational databases, including SQL Server and MongoDB.

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