Sr Engineer, Enterprise Applications Modernization

**The Role:** 11:11 Systems is looking for a Senior Engineer to design, build, and scale an AI-powered Applications and Integrations Modernization solution enabling faster, more predictable, and repeatable transformation of legacy applications and integrations at scale. The ideal candidate will be energetic, adaptable, detail oriented, capable of understanding a diverse set of business systems, and knowledgeable of how data flows across systems. They must have exceptional skills and discipline for making people, process, and technology work together to deliver mission-critical business outcomes. This is a full-time, remote role, based in the United States, reporting to the Director, Software Engineering - Frontend. **Responsibilities:** - Support the modernization of legacy applications, integrations, and workflows - Use approved AI tools such as GitHub Copilot, Claude, Codex, and similar tools to assist with code analysis, documentation, refactoring support, test generation, and modernization research under senior engineering guidance - Design and standardize modernization and migration framework for transforming applications and integrations - Establish scalable, reuseable frameworks for enterprise applications and integrations transformation and modernization - Work with the Manager/Principal Architect and Application development teams from strategy to solution to implementation and support of applications and integrations - Work closely with the Business Analysts on the understanding of functional and technical system requirements for architecting, designing and delivering solutions to meet business needs - Create solution designs that leverage the architecture standards and services to meet key project design criteria including Availability, Recoverability, Scalability, and Performance - Coordinate with other team members in the development of the integrations architecture roadmap that aligns with the strategic objectives of business groups and different technology groups - Build AI-first pipelines leveraging Claude, Codex, GitHub Copilot, agentic AI, and complementary tooling - Define and promote new ways of working for AI-driven transformation - Incorporate lean principles in all projects prior to the design phase - Provide architectural and technical input for definition, estimation and delivery of projects and solutions - Keep abreast of changes in technology regarding applications and integrations architecture, design and development - Work closely with the support team in managing tier III escalations and providing timely and quality production support to our business users - Work closely with Agile teams to deliver incremental software releases and enhancements - Work supportively with colleagues, operating in a manner that is consistent with 11:11’s Code of Business Ethics and Company Values - Responsibly receive, transmit, and handle company data and information per Company data handling agreements, work procedures and policies - Review and follow company policies and guidelines, data privacy practices, including annual compliance training certification and policy acknowledgements - Additional duties as assigned **Qualifications:** - Bachelor’s degree in Computer Science or a related field of study, or equivalent years of related work experience required - 5+ years’ experience in large-scale cloud or application and integrations modernization programs - Strong expertise in cloud architecture (AWS and/or Azure) - Hands-on experience or strong interest in AI-driven software modernization, including tools such as GitHub Copilot, Copilot Agents, Claude, or Codex - Proven experience with CI/CD pipelines and developer toolchains (e.g., GitHub, automation pipelines, quality tooling) - Experience in integrations architecture, design, development, delivery, and support using Mulesoft ESB or equivalent tool - Domain knowledge and experience with CRM, ERP, and ITSM applications, and integrations between the applications -…