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# Senior Software Engineer: Senior Full-Stack Cloud Modernization Engineers

- **Company:** FIS, Inc.
- **Location:** Jacksonville, FL, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), .NET Framework, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Component-Based Software Engineering, Application Performance Management, C Sharp (Programming Language), Cloud Computing, Static Program Analysis, Software Quality, Computer Engineering, Computer Telephony Integration, Relational Databases, Distributed File Systems, File Systems, Google Analytics, JQuery, Redis, Secure Coding, Session Management, Single Sign-On, Test Execution Engine, TypeScript, Software Vulnerability Management, Web Applications, Software Licensing, Enterprise Software Applications, ReactJS, Amazon ElastiCache, Software Security, Amazon Relational Database Service, Information Technology, Cloud Migration, Api Design, Splunk, Jenkins, Vulnerability Analysis
- **Published:** October 27, 2026
- **Apply:** https://diversityjobs.com/career/18758262/Senior-Software-Engineer-Senior-Full-Stack-Cloud-Modernization-Engineers-Florida-Jacksonville

## About the Role

REQUIREMENTS: Bachelor's degree or foreign equivalent in Computer Science, Computer Engineering, Electronic Engineering or related field and five (5) years of experience in the job offered or a related occupation: engineering automated financial data exchange and file-processing pipelines, including financial exchange workflow protocols, drop file ingestion within cloud object storage, software licensing systems, and parsing and transformation of industry-specific financial file formats, including end-to-end

troubleshooting of distributed file-processing failures; designing and operating continuous integration and continuous delivery (CI/CD) pipelines for automated, multi-environment deployment of enterprise applications, including automated build, test execution, and integrated code-quality and security gating; working with enterprise cloud platforms, including cloud compute, object storage, in-memory caching, and managed relational database services, with significant contribution to multi-phase cloud migration of legacy enterprise applications, including architecture design and distributed in-memory session management; developing and modernizing enterprise C# (.NET) web applications incorporating jQuery, JavaScript, CSHTML, React, and TypeScript, including evolving modular, component-based, API-driven architectures for scalability and maintainability; managing enterprise SSL/TLS digital certificate lifecycle using enterprise certificate management platforms, including provisioning, renewal,
revocation, and key rotation, combined with encryption/decryption and secrets and vault management; and performing application vulnerability management, including vulnerability assessment, secure code review, and remediation, using application security and static code analysis tools, combined with application performance monitoring and observability tooling. In the alternative, the employer will accept a Master's degree in the above listed fields and three (3) years of experience in the above listed skills. Telecommuting and/or working from home may be permissible pursuant to company policies.

## Description

FIS Management Services, LLC seeks Senior Software Engineer: Senior Full-Stack Cloud Modernization Engineers in Jacksonville, FL to perform financial data exchange, file format processing, and digital certificate lifecycle management for enterprise financial services clients. Lead implementation of financial exchange workflow protocol (FXR) and drop file and NTB file processing mechanisms, design and implement CTI software licensing systems, and develop automated processing for financial file formats (AFP, id2). Engineer the cloud migration of legacy financial applications to AWS across EC2, S3, ElastiCache, and RDS; implement distributed Redis-based session management. Modernize enterprise web applications, designing features in React and TypeScript while maintaining C# (.NET) applications built on jQuery, JavaScript, and CSHTML, evolving modular, API-driven architectures. Design and operate Jenkins-based CI/CD pipelines automating builds, testing, artifact management, and
multi-environment promotion with embedded quality and security gates. Deliver end-to-end implementations of enterprise technologies, including Single Sign-On (SSO) client implementations. Administer the SSL/TLS certificate lifecycle using platforms such as Sectigo, spanning provisioning, renewal, revocation, and key rotation. Remediate application vulnerabilities using Snyk and Macroscope; enforce code quality using static code analysis. Monitor application performance using ThousandEyes, Google Analytics, and Splunk. Act as expert technical resource and senior individual contributor for large-scale enterprise application delivery.