Senior Full Stack Developer

Job Description

Job Description

Senior Full Stack Developer
*This is a hybrid position with 2 days/week onsite
*We are not considering Corp-to-Corp (C2C) arrangements for this position

• We are seeking a highly skilled IT Consultant to design develop and implement a secure eCheck payment solution integrated with our existing Online Payment System OPS.
• This role will focus on building a seamless user experience by enabling customers to initiate payments via a web interface linked from the clients websites ensuring reliable compliant and scalable transaction processing.
• The ideal candidate will bring deep expertise in payment systems web application development and system integration with the ability to deliver high-quality solutions in a regulated environment.

• Design and develop a web-based eCheck ACH payment module that integrates with the existing OPS platform.
• Build and maintain a secure customer-facing payment interface accessible via the clients websites.
• Develop backend services and APIs to support payment workflows validation and transaction processing.
• Ensure compliance with financial regulations security standards and data protection requirements e.g. PCI-DSS NACHA guidelines.
• Collaborate with internal stakeholders to gather business and technical requirements and translate them into effective system architecture and user experience designs.
• Design, integrate, test and deploy the eCheck solution with existing enterprise/legacy systems and payment workflows.
• Conduct usability reviews and recommend interface improvements based on user feedback analytics and best practices.
• Ensure compliance with accessibility standards and modern web usability guidelines for public-facing applications.
• Troubleshoot and resolve issues related to payment processing system interfaces and performance.
• Document system architecture workflows and technical specifications.
• Provide recommendations for scalability reliability and future enhancements.
• Support ongoing maintenance upgrades optimization and production support.
• Participate in code migration from TFS to Azure DevOps ADO with Git version control.
• Utilize Azure DevOps ADO for work item tracking CI/CD pipelines and code management.

• Bachelor's degree in computer science, Information Technology, or related field (or equivalent experience)., Required
• 5+ years of experience in software development and system integration, including integration with enterprise and legacy platforms., Required
• Proven experience developing and integrating payment processing systems (ACH/eCheck preferred), including secure transaction processing, encryption , Required
• Strong proficiency in modern web application development, including JavaScript, HTML/CSS, front-end frameworks, and technologies such as Java, .NET,, Required
• Demonstrated experience designing and developing customer-facing web applications with strong UI/UX focus, including responsive design, accessibilit, Required
• Experience implementing APIs and system integrations using REST and/or SOAP services., Required
• Experience with relational databases and data modeling., Required
• Experience with Azure DevOps (ADO) for work item management, repositories, and CI/CD pipelines., Required
• Experience migrating code from TFS to Git-based repositories., Required
• Background in government, utilities, or other highly regulated environments., Required
• Experience integrating with enterprise and legacy systems., Required
• Experience with Microsoft Azure services, including App Services, Functions, and API Management., Required
• Experience designing customer-facing payment, checkout, banking, or other transaction-based digital experiences, including application of UI/UX best, Required
• Experience with high-availability, transaction-based systems, including online billing, invoice payment platforms, ACH processing workflows, and ban, Required