• Design, develop, and maintain the Transactional Billing Automation platform, including tracking contract information, prepaid usage blocks, rollovers, and calculating projected usage and balances. • Build and support responsive web application and RESTful APIs to automate transactional billing operations and reduce manual processing. • Develop dynamic UI components for managing customer contracts, multi-product selections, invoice details, and billing summaries. • Implement business logic for prepaid balances, rollover amounts, block total calculations, invoice validations, and contract lifecycle management. • Collaborate with product owners, software engineers, and QA engineers to gather billing requirements and deliver scalable automation solutions. • Create reusable components, clean architecture patterns, and well-documented APIs to improve maintainability and long-term scalability. • Develop unit tests, integration tests, and automated validation processes to ensure billing accuracy and support safe application enhancements. • Participate in code reviews and enforced coding standards, security best practices, and performance optimization techniques. • Develop operational dashboards and billing reports to provide visibility into contracts, prepaid usage, rollover balances, projected customer usage, and actual consumption trends. • Follow development standards, branching strategies, and pull request workflows to deliver clean, secure, and maintainable code through reviews and testing. • Support Agile development processes, including sprint planning, backlog refinement, stand-ups, demos, and retrospectives.

• Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS • Maintain a consistently high level of quality throughout all stages of the development • Communicate effectively to collaborate closely with the team and gain full context for complex tasks • Follow the best engineering practices, as well as company and client guidelines • Play supervisory, advisory, and coaching roles for less-experienced engineers on the team • Promote clean code, as well as design patterns and principles

• Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS • Maintain a consistently high level of quality throughout all stages of the development • Communicate effectively to collaborate closely with the team and gain full context for complex tasks • Follow the best engineering practices, as well as company and client guidelines • Play supervisory, advisory, and coaching roles for less-experienced engineers on the team • Promote clean code, as well as design patterns and principles

• Design, develop, and implement large-scale software solutions using Node.js and React • Ensure high quality and maintainability of code across all stages of development • Collaborate closely with cross-functional teams to gain full context for complex tasks • Adhere to engineering best practices, company policies, and client guidelines • Provide mentorship, technical guidance, and coaching to less-experienced engineers • Advocate for clean code principles, design patterns, and architectural best practices • Design and maintain distributed and secure systems, ensuring scalability and performance • Build and integrate APIs into the platform • Work with AWS services and DevOps practices to ensure reliability and efficiency