Senior Software Engineer, Cross-Platform Client (.NET MAUI / Xamarin)

Description

Keeper Security is hiring a Senior Software Engineer to help build and evolve KeeperChat, our secure messaging product. This is a 100% remote position, with an opportunity to work a hybrid schedule for candidates based in the El Dorado Hills, CA area.

Keeper’s cybersecurity software is trusted by millions of people and thousands of organizations globally. Keeper is published in 23 languages and sold in over 150 countries. Join one of the fastest-growing cybersecurity companies and play a critical role in delivering secure, high-quality communication experiences across platforms.

About Keeper

Keeper Security is transforming cybersecurity for organizations globally with zero-trust privileged access management built with end-to-end encryption. Keeper’s cybersecurity solutions are FedRAMP and StateRAMP Authorized, SOC 2 compliant, FIPS 140-2 validated, as well as ISO 27001, 27017 and 27018 certified. Keeper deploys in minutes, not months, and seamlessly integrates with any tech stack to prevent breaches, reduce help desk costs and ensure compliance. Trusted by millions of individuals and thousands of organizations, Keeper is the leader for password, passkey and secrets management, privileged access, secure remote access and encrypted messaging. Learn how our zero-trust and zero-knowledge solutions defend against cyber threats at KeeperSecurity.com.

About the Job

As a Senior Software Engineer on the KeeperChat team, you will design and implement features across KeeperChat’s cross-platform client applications, spanning desktop, mobile, and web. You will work closely with product, design, and backend teams to translate user needs into secure, performant, and maintainable client-side solutions. This role focuses on client application development, performance optimization, and cross-platform consistency.

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

Requirements

• 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 Qualifications

• 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

Keeper Security, Inc. is an equal opportunity employer and participant in the U.S. Federal

E-Verify program. We celebrate diversity and are committed to creating an inclusive environment for all employees.