Senior Software Engineer

Cayuse Holdings

Senior Software Engineer (.NET Full Stack) responsible for designing, developing, and managing applications for IT infrastructure support. Involves integration of third-party components and large-scale data processing.

Posted 4/21/2026full-timeChantilly • Virginia • 🇺🇸 United StatesSenior💰 $135,000 - $141,489 per yearWebsite

Tech Stack

Tools & technologies

ASP.NETAWSBootstrapDockerJavaScriptjQuery.NETPostgresSDLCSQL

About the role

Key responsibilities & impact

Design, develop, test, and manage application development projects in support of IT infrastructure.
Integrate third-party components programmatically and introduce new custom capabilities.
Modify existing code to enhance functionality and performance.
Recommend process improvements and automate operations and maintenance tasks.
Develop and implement technical efforts to design, build, and deploy applications under the direction of lead architects.
Work on large-scale data processing, computationally intensive statistical modeling, and advanced analytics.
Participate in all aspects of the software development life cycle, including planning, requirements, development, testing, and quality assurance.
Conduct technical project milestone reviews, code architecture sessions, resource estimation, and development best practices knowledge transfer.
Other duties as assigned.

Requirements

What you’ll need

Bachelor’s Degree
Minimum of 8 years of experience.
Must have experience with:
C#
ASP.NET MVC (web development)
Object Oriented skills
WCF or Web API
Heavy SQL experience w/ Stored Procedures, Functions and PLSQL or Transactions
Linq
JavaScript, JQuery, HTML
Nice To Have
Git Repository/GitLab
ASP.NET Core (Web)
Postgres
Internet Information Services (IIS)
CSS/Bootstrap
Telerik/other UI Framework
IIS
Docker
CI/CD
AWS
Proven experience in software development and application management.
Strong knowledge of application design, development, testing, and management.
Experience with programmatic integration of third-party components.
Proficiency in modifying existing code and introducing new custom capabilities.
Ability to recommend and implement process improvements and automation.
Experience with Microsoft 365 Power Platform and SharePoint.
Experience with large-scale data processing, statistical modeling, and advanced analytics.
Strong understanding of the software development life cycle, including planning, requirements, development, testing, and quality assurance.
Experience working under the direction of lead architects.
Familiarity with technical project milestone reviews and code architecture sessions.
Knowledge of resource estimation and development best practices.
Ability to transfer knowledge and mentor team members.
Active Top Secret. Must be able to pass a background check. May require additional background checks as required by projects and/or clients at any time during employment.

Benefits

Comp & perks

Medical, Dental and Vision Insurance
Wellness Program
Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)
Short-Term and Long-Term Disability options
Basic Life and AD&D Insurance (Company Provided)
Voluntary Life and AD&D options
401(k) Retirement Savings Plan with matching after one year
Paid Time Off

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

C#ASP.NET MVCObject Oriented programmingWCFWeb APISQLPLSQLJavaScriptHTMLLINQ

Soft Skills

process improvementautomationmentoringknowledge transferproject managementcommunicationteam collaborationproblem solvinganalytical thinkingleadership

Certifications

Bachelor’s DegreeActive Top Secret clearance