Weekend Software Developer Jobs in Irvine, CA (NOW HIRING)

POSITION IS 100% ONSITE DAILY IN NORCO, CA

VSolvit is seeking a Software Developer to join our team supporting the development, modernization, and sustainment of mission-critical analysis applications for the U.S. Navy. The selected candidate will work within a collaborative Agile SAFe environment, contributing to the design, development, testing, and maintenance of desktop software applications.

This position is ideal for software developers with experience in C#, .NET, and desktop application development who enjoy solving complex technical challenges and working in a team-oriented environment. The successful candidate will contribute to both new feature development and the modernization of legacy systems while supporting critical mission requirements.

We are seeking candidates ranging from mid-level to senior-level experience who demonstrate strong technical aptitude, sound engineering principles, and the ability to work effectively both independently and within a collaborative team environment.

• Collaborate within an Agile Scrum team to design, develop, test, and maintain desktop analysis applications.

• Develop and maintain software solutions using C#, .NET, and related technologies.

• Support and modernize legacy software systems, including applications developed in Delphi.

• Develop desktop user interfaces and application functionality using modern software engineering practices.

• Apply object-oriented programming principles, multi-threading, concurrency, and task-based asynchronous programming (TPL).

• Troubleshoot, debug, and resolve software defects and performance issues.

• Participate in software design discussions, code reviews, and technical planning activities.

• Develop and maintain technical documentation as required.

• Participate in sprint planning, daily standups, retrospectives, and other Agile ceremonies.

• Collaborate with software engineers, systems engineers, testers, and government stakeholders to deliver mission-focused solutions.

• 3–10+ years of professional software development experience

• Strong proficiency in C# and .NET with a focus on desktop application development

• Experience developing, maintaining, and enhancing desktop applications

• Strong understanding of object-oriented programming principles and software design patterns

• Experience with multi-threading, concurrency, and task-based asynchronous programming (TPL)

• Experience troubleshooting and resolving software defects in complex software systems

• Working knowledge of Git source control and common development workflows

• Strong written and verbal communication skills

• Ability to work effectively in a collaborative team environment

• U.S. Citizenship required

• Ability to obtain and maintain a U.S. Government Security Clearance 

• If applicable: If you are or have been recently employed by the U.S. Government, a post-employment ethics letter will be required if employment with VSolvit is offered

• Experience with Unity development

• Experience with Agile methodologies, particularly Scrum and SAFe

• Experience using Atlassian tools such as Jira and Confluence

• Experience developing desktop applications within government, defense, or regulated environments

• Experience modernizing and maintaining legacy software systems

• Familiarity with Delphi applications and codebases

• Experience with Avalonia UI or other XAML-based desktop application frameworks (WPF, WinUI, MAUI) is highly desirable

• Active Secret or Top Secret Security Clearance is a plus

• CompTIA Security+ Certification is a plus

• Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or a related technical discipline, or equivalent experience.

• Relevant technical certifications are a plus.

• Ability to obtain required DoD Cyber Workforce certifications as required by the program.

The interview process consists of conversational and technical discussions designed to evaluate a candidate's software development experience, problem-solving abilities, technical aptitude, communication skills, and overall fit within the team.

Candidates will have the opportunity to discuss prior projects, software development approaches, technical challenges, and experience working within collaborative development environments.

This position is intended for mid-to-senior level software developers capable of contributing to the design, development, modernization, and sustainment of mission-critical software systems. The ideal candidate demonstrates strong technical expertise, sound engineering judgment, and a commitment to delivering high-quality software solutions in support of U.S. Navy missions.