Keeper Security, Inc. · 4 days ago
Senior Software Engineer, Cross-Platform Client (.NET MAUI / Xamarin)
El Dorado Hills, CA
Contract
Hybrid
Senior Level
5+ years expKeeper Security is a fast-growing cybersecurity company that is hiring a Senior Software Engineer to help build and evolve KeeperChat, their secure messaging product. The role involves designing and implementing features across cross-platform client applications while collaborating closely with product and design teams.
Cloud SecurityCyber SecurityIdentity ManagementSecuritySoftware
Responsibilities
Design and implement new features for KeeperChat across desktop, mobile, and web platforms
Develop and maintain cross-platform applications using .NET / C#, including MAUI-based clients
Build and maintain web UI components using JavaScript and React where applicable
Optimize application performance, reliability, and user experience across Windows, macOS, iOS, and Android
Participate in code reviews and contribute to high standards of code quality and security
Collaborate closely with product managers and designers to translate requirements into technical solutions
Mentor junior engineers and contribute to a culture of technical excellence
Qualification
Required
5+ years of professional software engineering experience
Strong experience with .NET / C# in client or application development
Experience building cross-platform applications (desktop and/or mobile)
Experience with JavaScript and React for web-based UI development
Strong understanding of software design patterns and principles
Experience optimizing performance in client-side or multi-platform applications
Strong debugging and problem-solving skills
Experience working in Agile development environments
Bachelor's degree in Computer Science, Engineering, or equivalent practical experience
Preferred
Experience with .NET MAUI or similar cross-platform frameworks
Experience integrating native modules or platform-specific functionality
Background in secure or privacy-focused applications
Benefits
Medical, Dental & Vision (Inclusive of domestic partnerships)
Employer Paid Life Insurance & Employee/Spouse/Child Supplemental life
Voluntary Short/Long Term Disability Insurance
401K (Roth/Traditional)
A generous PTO plan that celebrates your commitment and seniority (including paid Bereavement/Jury Duty, etc)
Above-market annual bonuses
Company
Keeper Security, Inc.
Keeper Security is transforming cybersecurity for millions of individuals and thousands of organizations globally.
501-1000 employees
H1B Sponsorship
Keeper Security, Inc. has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$60.25MKey Investors
Summit PartnersInsight Partners
2023-05-09Private Equity
2020-08-13Private Equity· $60M
2011-01-01Seed· $0.25M
Leadership Team
Darren Guccione
Co-founder and CEO
Craig Lurey
CTO, Co-founder
Recent News
2025-12-25
Company data provided by crunchbase