Sr. Software Systems Engineer (C#/.NET Developer)

Job ID 2616245Location Remote Work, TX, USDate Posted 2026-08-28Category Engineering and SciencesSubcategory Systems EngineerSchedule Full-TimeShift Day JobTravel NoMinimum Clearance Required NoneClearance Level Must Be Able to Obtain Public TrustPotential for Remote Work ORA_REMOTEDescriptionSAIC is searching for a motivated, career and customer-oriented Sr. Software Engineer (C#/.NET Developer) who will work across EDI transaction processing, backend API development, and cloud native systems on AWS. This is a hands-on engineering role with direct impact on how VA healthcare data flows through our platform.  This is a 100% Remote role.Job DescriptionDesign, build, and maintain C#/.NET/AWS backend services handling high-volume healthcare EDI transactions (837, 835, etc.) Parse, validate, and transform X12 EDI documents Debug complex transaction-level issues across payers, clearinghouses, and trading partners Write, optimize, and troubleshoot SQL stored procedures including performance tuning, query analysis, and complex data transformations Work with XML object store data query, parse, and manipulate structured XML within MSSQL Write clean, testable, well-documented code and participate actively in code review Contribute to shared platform libraries and services used across multiple product initiatives Performs technical planning, high level and detailed requirements definition, test planning and execution with team members and stakeholders on a daily basis Serve as an active member of the software development team participating in daily stand-ups Deploy, support and ensure the performance, quality, and responsiveness of application Provide development support, as needed, for solutions deployed to production Implement long term solutions and building blocks within the agile framework for improved reusability Apply and promote best software engineering practices Use Integrated Development Environment (IDE) tools to include Visual Studio and Git QualificationsEducationBachelor's or master's degree in computer science, electronics engineering or other engineering or technical discipline is requiredExperienceMinimum of 8 years of experience in software development using C#/.NET technologies Proven track record of working on complex software projects and leading development initiatives  Experience with designing, developing, and deploying enterprise-level applicationsRequirementsStrong proficiency in C#/.NET ecosystem  Proficiency in developing back-end applications using design and integration patterns  Hands-on AWS experience (serverless, messaging, storage, databases) preferred  Strong SQL skills writing and optimizing stored procedures, troubleshooting execution plans, performance tuning in MSSQL  Proficient with Git and GitHub   Experience with MSSQL or similar relational databases  Proficiency in database design and development, including working with SQL Server and Entity FrameworkFamiliarity with cloud platforms (e.g., Microsoft Azure, AWS) and servicesUnderstanding of continuous integration/continuous deployment (CI/CD) practices and tools (e.g., AWS CodePipeline, CodeBuild, CodeDeploy)Knowledge of unit testing frameworks and tools (e.g., NUnit, xUnit, MSTest). - Proficiency in using development tools like Visual Studio and Visual Studio CodeExcellent problem-solving and analytical skillsStrong communication and interpersonal abilitiesAbility to work independently and as part of a large teamAttention to detail and commitment to producing high-quality softwareAbility to prioritize tasks and manage time effectively using JIRAExperience with agile development methodologies (e.g., Scrum, Kanban)Familiarity with DevOps practices and infrastructure as code (IaC)Ability to conduct code reviews and provide constructive feedbackExperience with performance tuning and optimization of applicationsKnowledge of microservices and event-driven architecture and containerization technologies (e.g., Docker, ECS, EKS) is a plusExperience with healthcare payer/PBM systems, clearinghouses, or pharmacy operations is a plus Clearance RequirementUS Citizenship with the ability to obtain and maintain a Public Trust clearanceTarget salary range $80,001 - $120,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.