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

  • SAIC
  • TX
  • May 06, 2026

Job Description

Description
SAIC 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 DESCRIPTION
  • Design, 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

Qualifications
Education
  • Bachelor's or master's degree in computer science, electronics engineering or other engineering or technical discipline is required.
Experience
  • Minimum 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 applications

Requirements
  • Strong 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 Framework.
  • Familiarity with cloud platforms (e.g., Microsoft Azure, AWS) and services.
  • Understanding 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 Code.
  • Excellent problem-solving and analytical skills.
  • Strong communication and interpersonal abilities.
  • Ability to work independently and as part of a large team.
  • Attention to detail and commitment to producing high-quality software.
  • Ability to prioritize tasks and manage time effectively using JIRA.
  • Experience 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 feedback.
  • Experience with performance tuning and optimization of applications.
  • Knowledge of microservices and event-driven architecture and containerization technologies (e.g., Docker, ECS, EKS) is a plus.
  • Experience with healthcare payer/PBM systems, clearinghouses, or pharmacy operations is a plus
Clearance Requirement:
  • US Citizenship with the ability to obtain and maintain a Public Trust clearance



Target salary range: $80,001 - $120,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.