.NET / C# Developer, Senior

About Kaimetrix, L. L. C. At Kaimetrix, we deliver complete IT solutions and bring together complex and often siloed services - increasing the value of IT through a holistic, end-to-end approach. We combine real data with expert insights to help organizations modernize, streamline operations, advance IT initiatives, and achieve mission success for federal civilian, defense, and intelligence agencies. Our core capabilities include cybersecurity, data operations, end‑user support, IT management, software development, systems engineering, process improvement, and technical advisory. We believe our greatest asset is our people. We invest in our team’s growth, empower them with autonomy and accountability, and offer meaningful work that supports mission‑focused agencies while advancing your career. Join us if you’re looking to do impactful work, develop professionally, and be part of a culture that values continuous improvement, metrics‑driven performance, and exceptional service. Benefits Summary: Kaimetrix offers a comprehensive benefits package that includes medical, dental, and vision insurance; company‑paid short‑term and long‑term disability coverage; company‑paid life and AD&D insurance with additional voluntary options; a 401(k) and Roth retirement plan with employer matching; paid time off that increases with tenure; 11 paid federal holidays; FSA and HSA options; commuter benefits; annual education reimbursement for approved training and certifications; employer‑paid identity protection; and optional supplemental coverages such as accident, cancer, critical illness, and hospital indemnity. Kaimetrix, L.L.C. is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin. About the role Kaimetrix is seeking a Senior .NET / C# Developer to support secure, mission‑critical web applications in a Microsoft‑oriented enterprise environment. This role is responsible for designing, developing, testing, and maintaining .NET solutions built with C# , MVC 4+ , and IIS on Windows Server , while applying disciplined SDLC practices, strong defect management, and hands‑on mentorship to junior developers. What you’ll do Design, develop, and maintain web applications using MS .NET, C#, MVC 4+ , and IIS for Windows Server web development Participate in the Software Development Life Cycle (SDLC) , supporting delivery through planning, development, deployment, and sustainment Perform and support development testing activities, including Unit Testing, System Testing, Functional Testing, and User Acceptance Testing (UAT) Develop and support SQL database stored procedures as part of application functionality and maintenance automation Document, track, and communicate software defects using a bug tracking system; report issues to software developers and project managers and support resolution through retest/verification Mentor junior personnel on proper development practices and procedures to improve consistency, quality, and delivery outcomes Collaborate with peers to review code and ensure best practices, team norms, and coding standards are followed Qualifications Eight (8) years of experience in .NET development , including MS .NET, C#, MVC 4+ , and IIS for Windows Server web development Five (5) years of experience working within an SDLC Five (5) years of experience with development testing (Unit/System/Functional/UAT or similar) Five (5) years of experience in SQL database development , including stored procedures Five (5) years of experience mentoring junior personnel on proper practices and procedures Five (5) years of experience documenting software defects using a bug tracking system and reporting defects to developers and project managers Security & Certification Requirements Active TS/SCI clearance with SBI , with the ability to attain SI, TK, G, HCS, and NATO Secret access DoD 8140.03 IAT Level II / Intermediate certification #J-18808-Ljbffr