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

Saic; Town of Texas (WI); On-site; USD 80,000 - 120,000; Full time

Job summary

SAIC is seeking a Sr. Software Engineer (C#/.NET) for backend services across EDI processing and cloud-native systems on AWS. This 100% remote role involves building scalable solutions, validating EDI documents, and optimizing database operations in MSSQL.

The ideal candidate has 8+ years in C#/.NET, strong SQL and AWS experience, and a proven track record delivering enterprise-grade applications. Collaboration in an agile environment is essential.

Qualifications

• Bachelor's or master's degree in computer science, electronics engineering, or other engineering/technical discipline is required.
• Minimum 8 years of experience in software development using C#/.NET.
• Experience designing, developing, and deploying enterprise-level applications.

Responsibilities

• Design, build, and maintain C#/.NET/AWS backend services for high-volume EDI transactions.
• Parse, validate, and transform X12 EDI documents.
• Write, optimize, and troubleshoot SQL stored procedures in MSSQL.
• Work with XML data in MSSQL and ensure code is clean and well-documented.

Skills

C#/.NET

AWS

SQL

Git

MSSQL

Entity Framework

CI/CD

EDI

Problem-solving

Communication

Education

Bachelor's or Master's degree in CS/EE or related

Tools

Visual Studio

GitHub

Docker

AWS CodePipeline/CodeBuild/CodeDeploy

XML/MS SQL tooling

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, andmaintainC#/.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 Studioand Git

Qualifications

Education:

• Bachelor's ormaster's degree in computer science, electronics engineering or other engineering or technical discipline isrequired

Experience:

• Minimum of8years of experience in software development using C#/.NET technologies
• Proventrack recordof working on complex software projects and leading development initiatives
• Experience with designing, developing, and deploying enterprise-level applications

Requirements:

• Strongproficiencyin C#/.NET ecosystem
• Proficiencyin developingback-endapplications usingdesignand integrationpatterns
• Hands‑on AWS experience (serverless, messaging, storage, databases) preferred
• Strong SQL skills: writing andoptimizingstored procedures, troubleshooting execution plans, performance tuning in MSSQL
• Proficient with Git and GitHub
• Experience with MSSQL or similar relational databases
• Proficiencyin 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., AWSCodePipeline,CodeBuild,CodeDeploy)
• Knowledge of unit testing frameworks and tools (e.g.,NUnit,xUnit,MSTest). -Proficiencyin using development tools like Visual Studio and Visual Studio Code
• Excellent problem-solving and analytical skills
• Strong communicationand interpersonal abilities
• Ability to work independently and as part of alargeteam
• Attention to detail and commitment to producing high-quality software
• Ability to prioritize tasks and manage time effectivelyusing 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 microservicesand event-drivenarchitecture and containerization technologies (e.g.,Docker, ECS, EKS) is a plus
• Experience with healthcare payer/PBM systems, clearinghouses, or pharmacy operations is aplus

Clearance Requirement:

• US Citizenship with the ability to obtain andmaintaina 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.