# Application Software Engineer, Endpoint Security
**Company:** [Oneleet](https://hotfix.jobs/companies/oneleet)
**Location:** Remote
**Salary:** $110K-$180K
**Experience:** 5+ years
**Skills:** Go, JavaScript, gRPC, REST APIs, Windows Apis, Macos Frameworks, Linux Kernel, Electron, Endpoint Security, Cross-Platform Development
**Posted:** 2025-11-03
> Develops and maintains cross-platform endpoint security agent for Windows, macOS, and Linux using Go and JavaScript. Handles system monitoring, threat detection, secure cloud communication, and compliance enforcement. Requires 5+ years systems programming experience and OS internals knowledge.
## Job Description
## Key Responsibilities
- Design and implement cross-platform agent functionality for Windows, macOS, and Linux using Go and JavaScript
- Build low-level configuration automation and system monitoring capabilities that interact with OS-specific APIs and security frameworks
- Develop secure communication protocols between agents and our cloud platform using gRPC or REST APIs
- Implement real-time threat detection and response capabilities at the endpoint level
- Create robust update and deployment mechanisms that ensure agents remain current without disrupting user workflows
- Build telemetry collection systems that provide visibility into device security posture while respecting privacy
- Collaborate with the security team to implement new detection rules and compliance checks
- Ensure agent performance is optimized to minimize system resource usage
- Develop comprehensive testing strategies for multi-OS compatibility
- Create tools and dashboards for monitoring agent health and deployment status across thousands of endpoints

## Qualifications
- 5+ years of professional software development experience with a focus on systems programming or security software
- Strong experience with Go and JavaScript for building production-grade applications
- Deep understanding of operating system internals across Windows, macOS, and Linux
- Experience with low-level configuration automation and system administration across multiple platforms
- Proven experience with gRPC or REST API design and implementation
- Experience building software that runs with elevated privileges while maintaining security
- Strong understanding of endpoint security concepts and best practices
- Experience with cross-platform development challenges and solutions
- Excellent debugging and troubleshooting skills for complex system-level issues

## Bonus
- Experience with Electron for building cross-platform desktop applications
- Experience with Windows APIs, macOS system frameworks, or Linux kernel interfaces
- Background in cybersecurity, particularly endpoint detection and response (EDR) or mobile device management (MDM)
- Experience with certificate management and cryptographic operations
- Familiarity with compliance frameworks (SOC2, ISO27001, HIPAA)
- Experience with real-time data streaming and event processing
- Bachelor's or Master's degree in Computer Science, Cybersecurity, or related field
**Apply:** https://hotfix.jobs/jobs/application-software-engineer-endpoint-security-at-oneleet-3c289aca-849b-400b-aac0-a669fd16edd8
**Canonical:** https://hotfix.jobs/jobs/application-software-engineer-endpoint-security-at-oneleet-3c289aca-849b-400b-aac0-a669fd16edd8