Sr. Software Engineer

Senior Software Engineer – Remote

Expert Technical Solutions has an immediate opening for Senior Software Engineer with one of our premier clients in the financial services industry.

This is contract to hire p osition with excellent benefits offered. The role will be fully Remote.

This role is ideal for a technically strong, hands-on engineer who thrives in a fast-paced, high-availability production environment and wants to contribute to reliability and innovation in payment processing systems

Key Responsibilities

• Diagnose and resolve production incidents, perform root-cause analysis, and implement fixes for bugs and system issues.
• Contribute to enhancements and performance improvements for existing applications and infrastructure.
• Ensure security patches and updates are applied promptly.
• Monitor application health and system performance.
• Identify bottlenecks and implement optimizations for scalability, availability, and reliability.
• Develop and maintain software components using C#/.NET (including ASP.NET WebForms ), React, and Node.js.
• Contribute to CI/CD pipelines (e.g., Jenkins) and infrastructure-as-code (Terraform on AWS) to automate deployments.
• Use version control (Git/GitHub), development environments (Visual Studio / VS Code), Docker for containerization, and PowerShell for scripting and automation.
• Implement unit testing ( NUnit ) and support quality-assurance practices.
• Design, maintain, and troubleshoot WCF and RESTful web services used in payment processing. Ensure integrations with external systems are reliable and secure.
• Work with cross-functional teams (product, development, QA, security, operations) to support ongoing projects and maintain documentation (e.g., Confluence) for processes and system designs.

Required Skills

• Experience: 7+ years of professional software development experience with hands on experience in production systems.
• Proficient in C#/.NET (including ASP.NET WebForms ).
• Skilled in modern web technologies such as React (front-end) and Node.js
• Experience with AWS cloud services, infrastructure-as-code (Terraform), and CI/CD pipelines (Jenkins or similar).
• Familiarity with Docker containerization.
• Strong knowledge of SQL Server (T-SQL) and familiarity with NoSQL databases like AWS DynamoDB.
• Solid experience with Git/GitHub and development environments like Visual Studio or VS Code
• Experience with PowerShell or other scripting languages to automate tasks and processes.
• Experience writing and maintaining automated unit tests (e.g., NUnit ).
• Understanding of CI/CD best practices and quality-gate tools.
• Knowledge of WCF services and RESTful APIs.
• Able to design and debug service-based architectures.