• Senior Software Developer

    Robert Half Technology (Calabasas, CA)


    Description

    Position: Senior Software Developer

     

    Contract Type: Contract-to-Hire (CTH)

     

    Start Date: May 12

     

    Hours: 9:00 AM – 6:00 PM

     

    Pay Rate: $71–$89/hr

     

    On-call: Rotation and occasional weekends as needed

     

    Pre-Placement: Background Check Required

    Position Overview

    We are seeking a seasoned Senior Software Developer to join a high-performing development team focused on supporting both legacy systems and building the future of a key enterprise platform. This role is perfect for a developer who thrives in a hybrid environment of maintaining robust Windows-based solutions while also shaping modern, scalable service-driven applications.

     

    You’ll contribute to the evolution of a core system that serves as a critical integration hub across the business, influencing both architecture and implementation across multiple layers of the tech stack.

    Key Responsibilities

    + Maintain and enhance legacy enterprise applications built with VB.NET and C#

    + Support and extend SOAP-based web services using .NET technologies

    + Work on modern web applications using C#, ASP.NET MVC, .NET Core, SQL, and React

    + Build and manage serverless APIs in Microsoft Azure (C#, SQL)

    + Design scalable software components that are performant and maintainable

    + Collaborate closely with stakeholders, including developers, product owners, and SMEs

    + Troubleshoot and resolve system issues, bottlenecks, and bugs

    + Maintain clean, modular codebases and participate in code reviews

    + Create and update documentation, including technical specs and diagrams

    + Participate in an on-call support rotation and assist with incident response and communication

    Requirements

    Requirements & Experience

     

    + 8+ years of experience with .NET development (Framework 4.5.1 and newer)

    + Strong background with VB.NET, C#, ASP.NET MVC, and .NET Core

    + Skilled in SQL Server and T-SQL, including procedures and functions

    + Experience developing and consuming SOAP and RESTful APIs

    + Knowledge of Azure cloud services, especially Azure Functions and serverless architecture

    + Hands-on experience with Visual Studio (2019+) and SQL Server Management Studio

    + Understanding of layered architecture, domain-driven design, and MVC patterns

    + Familiar with CI/CD pipelines and modern deployment workflows

    + Experience working with reusable frameworks and modular codebases

    + Knowledge of object-oriented programming principles

    + Strong documentation and technical communication skills

    + Previous experience working with Agile methodologies

    + Must be self-driven, collaborative, and detail-oriented

    + Authorized to work in the United States

    Preferred Qualifications

    + Familiarity with Azure DevOps, App Insights, and virtual machine configuration

    + Experience with reporting tools like Crystal Reports or DevExpress

    + Background in travel, hospitality, or finance platforms is a plus

     

    Technology Doesn't Change the World, People Do.®

     

    Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

     

    Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

     

    Robert Half will consider for employment qualified applicants with arrest or conviction records in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

     

    • 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .