Senior Software Systems Engineer, C#/.NET Developer
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Job Description
Senior C#/.NET engineer building AWS backend services for SAIC’s healthcare EDI platform. Handling X12 transactions, SQL optimization, cloud deployment, and production support.
Responsibilities:
- Design, build, and maintain C#/.NET/AWS backend services handling high-volume healthcare EDI transactions
- 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
- Query, parse, and manipulate structured XML within MSSQL
- Write clean, testable, and well-documented code and participate in code reviews
- Contribute to shared platform libraries and services used across multiple product initiatives
- Perform technical planning, requirements definition, test planning, and test execution with team members and stakeholders
- Participate in daily stand-ups as an active software development team member
- Deploy, support, and ensure application performance, quality, and responsiveness
- Provide development support for solutions deployed to production
- Implement long-term solutions and reusable building blocks within an agile framework
- Apply and promote software engineering best practices
- Use Visual Studio and Git
Requirements:
- Bachelor's or Master's degree in computer science, electronics engineering or other engineering or technical discipline is required
- 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
- 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, including writing and optimizing stored procedures, troubleshooting execution plans, and performance tuning in MSSQL
- Proficient with Git and GitHub
- Experience with MSSQL or similar relational databases
- Proficiency in database design and development, including SQL Server and Entity Framework
- Familiarity with cloud platforms such as Microsoft Azure and AWS and their services
- Understanding of CI/CD practices and tools such as AWS CodePipeline, CodeBuild, and CodeDeploy
- Knowledge of unit testing frameworks and tools such as NUnit, xUnit, and MSTest
- Proficiency in 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 such as Scrum and 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, event-driven architecture, and containerization technologies such as Docker, ECS, and EKS is a plus
- Experience with healthcare payer/PBM systems, clearinghouses, or pharmacy operations is a plus
- US Citizenship with the ability to obtain and maintain a Public Trust clearance
Benefits:
- 100% Remote role
- Equal Opportunity Employer
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