Senior Software Engineer, Cryptography & Secrets Management

Keeper Security • El Dorado Hills, CA

7d • Remote

About The Position

As a Senior Software Engineer on the KSM team, you will design, develop, and maintain security-critical backend services, SDKs, and integrations that power Keeper Secrets Manager. This role requires a polyglot engineer with deep cryptography expertise. You will work across multiple programming languages and SDKs and are expected to understand cryptographic primitives at an implementation level, not just through high-level libraries. This is not a single-language role.. You will collaborate closely with other senior engineers and security leaders to ensure KSM meets the highest standards for security, correctness, and long-term maintainability.

Requirements

• 5+ years of professional software engineering experience in backend or platform development
• Strong proficiency across multiple programming languages, including several of the following: Java, JavaScript, Python, .NET, Go, Rust, and Ruby
• Demonstrated ability to move fluently between languages based on SDK, platform, performance, or security requirements
• Strong understanding of cryptography concepts, including symmetric and asymmetric encryption, elliptic curve cryptography, and secure key management
• Familiarity with post-quantum cryptography concepts and emerging algorithms
• Experience implementing, reviewing, or debugging cryptographic code beyond simply calling third-party libraries
• Strong understanding of secure coding practices, threat modeling, and secrets management systems
• Experience designing and building APIs, SDKs, or integration-heavy platforms
• Strong problem-solving, debugging, and communication skills
• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience

Responsibilities

• Design, develop, and maintain secure backend services and APIs for Keeper Secrets Manager
• Build and maintain SDKs and integrations used by developers across multiple languages
• Implement and review cryptographic functionality including encryption, key management, and signing workflows
• Work fluently across multiple programming languages depending on SDK, platform, and security requirements
• Contribute to architectural decisions related to cryptography, secrets handling, and secure system design
• Ensure performance, reliability, and security of KSM services in production environments
• Participate in code reviews with a strong focus on correctness, security, and cryptographic soundness
• Maintain clear technical documentation and contribute to open-source components where applicable
• Stay current with modern cryptography standards, emerging threats, and post-quantum developments

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)

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level