.NET Full Stack Developer, Senior

Cayuse Holdings

Senior .NET Full Stack Developer handling enterprise application development and integration for Cayuse. Engaging in all SDLC phases while mentoring junior developers.

Posted 6/5/2026full-timeWashington • Washington • 🇺🇸 United StatesSenior💰 $145,000 - $151,258 per yearWebsite

Tech Stack

Tools & technologies

ETLSDLC

About the role

Key responsibilities & impact

Design, develop, test, and manage application development projects in support of enterprise IT infrastructure and services.
Integrate third‑party components programmatically and introduce new custom capabilities to meet evolving functional and non‑functional requirements.
Maintain and enhance existing applications by modifying code, improving performance, and refactoring for scalability, reliability, and maintainability.
Identify, recommend, and implement process improvements; design and develop automation for operations and maintenance tasks to increase efficiency and reduce manual effort.
Translate functional and technical requirements into robust, scalable software designs under the direction and guidance of lead architects.
Design and implement solutions for large‑scale data processing, computationally intensive statistical modeling, and advanced analytics workloads.
Participate in all aspects of the SDLC, including backlog refinement, sprint planning, requirements analysis, design, development, unit and integration testing, deployment, and ongoing quality assurance.
Conduct and contribute to technical project milestone reviews, code and architecture review sessions, and technical design walkthroughs.
Assist with effort and resource estimation for development tasks and projects; support planning and tracking of development activities.
Apply and promote software development best practices, including secure coding standards, code reviews, automated testing, and continuous integration/continuous delivery (CI/CD).
Prepare and maintain technical documentation (design specifications, interface control documents, deployment guides, and user/operations manuals).
Collaborate effectively with cross‑functional teams including architects, business analysts, data engineers, testers, and operations staff to deliver high‑quality solutions.
Mentor and provide knowledge transfer to junior developers and other team members through code reviews, pair programming, and technical presentations.
Other duties as assigned.

Requirements

What you’ll need

Bachelor’s degree in Information Technology, Computer Science, Computer Engineering, or a related field.
Minimum of 8 years of professional software development experience.
Demonstrated experience designing, developing, testing, and managing enterprise applications.
Hands‑on experience with programmatic integration of third‑party components, APIs, and services.
Proficiency in modifying and extending existing codebases, including troubleshooting, performance tuning, and refactoring.
Proven ability to identify, recommend, and implement process improvements and automation solutions for operational workflows.
Experience working with large‑scale data processing, statistical modeling, or advanced analytics (e.g., ETL pipelines, distributed processing frameworks, or analytical computing).
Strong understanding of the full software development life cycle, including requirements analysis, design, development, testing, deployment, and maintenance.
Solid problem‑solving and analytical skills, with the ability to diagnose complex technical issues and propose effective solutions.
Strong verbal and written communication skills, with the ability to collaborate across technical and non‑technical stakeholders.
Demonstrated ability to work both independently and as part of a collaborative, agile team environment.
Top Secret Clearance is required. 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

application developmentprogrammatic integrationperformance tuningrefactoringdata processingstatistical modelingETL pipelinesautomated testingcontinuous integrationcontinuous delivery

Soft Skills

problem-solvinganalytical skillscommunication skillscollaborationmentoringknowledge transferindependent workagile teamwork

Certifications

Bachelor’s degree in Information TechnologyBachelor’s degree in Computer ScienceBachelor’s degree in Computer EngineeringTop Secret Clearance