Engineer Senior, Software (. Net ,C#, CI/CD)

About the role As the world works and lives faster, FIS is leading the way. Our fintech solutions touch nearly every market, company and person on the planet. Our teams are inclusive and diverse. Our colleagues work together and celebrate together. If you want to advance the world of fintech, we'd like to ask you: Are you FIS? About the role: We are seeking an experienced Senior Software Engineer to design, develop, maintain, and support business-critical enterprise applications and services. This role requires strong technical expertise, end-to-end ownership, and the ability to lead complex initiatives that improve application reliability, scalability, security, and operational efficiency. The ideal candidate combines software development excellence with strong problem-solving skills and a passion for delivering high-quality solutions that drive business outcomes. What you will be doing Design, develop, test, and maintain enterprise software applications and services using modern software engineering practices. Lead the delivery of complex technical initiatives and participate in architectural and design discussions. Analyze, troubleshoot, and resolve production issues while driving root cause analysis and long-term corrective actions. Support and enhance CI/CD pipelines, deployment automation, and engineering productivity tools. Collaborate with product owners, business analysts, QA engineers, operations teams, and other stakeholders to deliver high-quality solutions. Implement secure coding practices and address application security vulnerabilities. Contribute to application reliability, performance tuning, monitoring, and operational excellence initiatives. Mentor junior engineers through technical guidance, design reviews, and knowledge sharing. Drive continuous improvement through automation, process optimization, and engineering best practices. Participate in production support, release activities, and critical incident management as required. What you bring Strong experience in software development using .Net Core, ASP.Net, C#, REST APIs and SQL Server. Experience with CI/CD pipelines, source control systems, automated deployments, and DevOps practices. Strong debugging, troubleshooting, and production support skills. Experience working with highly available, business-critical systems in an enterprise environment. Knowledge of application security practices and vulnerability remediation. Ability to lead technical initiatives and influence engineering decisions. Strong collaboration and communication skills across technical and business teams. Experience mentoring developers and contributing to technical excellence across the organization. What we offer you Opportunity to work on mission-critical fintech platforms supporting global clients. Exposure to large-scale enterprise software development, reliability engineering, and modernization initiatives. Opportunities to lead high-impact technical projects and influence technology direction. A collaborative environment focused on innovation, learning, and continuous improvement. Clear career growth opportunities into Lead Engineer, Principal Engineer, Solution Architect, Engineering Manager, and other technical leadership roles. Strong focus on professional development, technical excellence, and career advancement. Privacy Statement FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice . Sourcing Model Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company. #pridepass