Senior C++ Developer
Action1 • Spain • Serbia
Posted: June 4, 2026
Job Description
About us:
Action1 is an autonomous endpoint management platform trusted by many Fortune 500 companies. Cloud-native, infinitely scalable, highly secure, and configurable in 5 minutes—it just works and is always free for the first 200 endpoints, with no functional limits. By pioneering autonomous OS and third-party patching with peer-to-peer patch distribution and real-time vulnerability assessment without needing a VPN, it eliminates routine labor, preempts ransomware and security risks, and protects the digital employee experience.
In 2025, Action1 was recognized by Inc. 5000 as the fastest-growing private software company in America. The company is founder-led by Alex Vovk and Mike Walters, American entrepreneurs who previously founded Netwrix, a multi-billion-dollar cybersecurity company.
About the Role:
We are seeking an experienced Senior C++ Developer to take a leading role in developing and supporting a cross-platform endpoint agent that runs on Windows, Linux, and macOS. This agent is a key component of our platform, responsible for executing patching workflows, communicating with the cloud backend, collecting system data, and enforcing policies.
You will work closely with a high-caliber team of engineers to ensure that the agent is performant, secure, and reliable across all supported operating systems.
What you'll do
- Design, develop, and maintain a robust, efficient, and secure cross-platform agent in modern C++.
- Ensure seamless functionality and consistent behavior across Windows, Linux, and macOS environments.
- Build integrations with OS-level APIs and services related to patching, system info gathering, and task execution.
- Optimize agent performance for different platforms and deployment scenarios.
- Handle communication with the cloud backend using secure and efficient protocols.
- Stay current on system security best practices and OS updates that affect agent behavior.
Requirements:
- Strong proficiency in C++ (ideally C++17 or later), with solid cross-platform development experience.
- Good understanding of system-level programming on at least two of the following: Windows, Linux, macOS.
- Experience in multithreading and asynchronous programming
- Experience in network programming (e.g., sockets, REST, HTTP/HTTPS)
- Writing clean, portable, and maintainable code
- Familiarity with version control (Git) and CI/CD pipelines.
- Experience in developing and debugging production-ready software for heterogeneous environments.
- Strong problem-solving skills and ability to work independently.
Nice to Have:
- Experience working with OpenSSL, secure communication protocols, or certificate handling.
- Background in endpoint security, patching, or systems management.
- Experience with cross-platform build systems (e.g., CMake).
- Proficiency in Bash, PowerShell
- Familiarity with cloud services such as AWS, Azure, or GCP.
What We Offer:
- Fully remote work, giving you the flexibility you need in the modern world
- A multitude of interesting challenges and opportunities.
- Non-stop professional growth and learning of new technologies.
- Stable income and flexible working hours, opportunities for promotion.
- Friendly and professional peers.
Additional Content
About us:
Action1 is an autonomous endpoint management platform trusted by many Fortune 500 companies. Cloud-native, infinitely scalable, highly secure, and configurable in 5 minutes—it just works and is always free for the first 200 endpoints, with no functional limits. By pioneering autonomous OS and third-party patching with peer-to-peer patch distribution and real-time vulnerability assessment without needing a VPN, it eliminates routine labor, preempts ransomware and security risks, and protects the digital employee experience.
In 2025, Action1 was recognized by Inc. 5000 as the fastest-growing private software company in America. The company is founder-led by Alex Vovk and Mike Walters, American entrepreneurs who previously founded Netwrix, a multi-billion-dollar cybersecurity company.
About the Role:
We are seeking an experienced Senior C++ Developer to take a leading role in developing and supporting a cross-platform endpoint agent that runs on Windows, Linux, and macOS. This agent is a key component of our platform, responsible for executing patching workflows, communicating with the cloud backend, collecting system data, and enforcing policies.
You will work closely with a high-caliber team of engineers to ensure that the agent is performant, secure, and reliable across all supported operating systems.
What you'll do
- Design, develop, and maintain a robust, efficient, and secure cross-platform agent in modern C++.
- Ensure seamless functionality and consistent behavior across Windows, Linux, and macOS environments.
- Build integrations with OS-level APIs and services related to patching, system info gathering, and task execution.
- Optimize agent performance for different platforms and deployment scenarios.
- Handle communication with the cloud backend using secure and efficient protocols.
- Stay current on system security best practices and OS updates that affect agent behavior.
Requirements:
- Strong proficiency in C++ (ideally C++17 or later), with solid cross-platform development experience.
- Good understanding of system-level programming on at least two of the following: Windows, Linux, macOS.
- Experience in multithreading and asynchronous programming
- Experience in network programming (e.g., sockets, REST, HTTP/HTTPS)
- Writing clean, portable, and maintainable code
- Familiarity with version control (Git) and CI/CD pipelines.
- Experience in developing and debugging production-ready software for heterogeneous environments.
- Strong problem-solving skills and ability to work independently.
Nice to Have:
- Experience working with OpenSSL, secure communication protocols, or certificate handling.
- Background in endpoint security, patching, or systems management.
- Experience with cross-platform build systems (e.g., CMake).
- Proficiency in Bash, PowerShell
- Familiarity with cloud services such as AWS, Azure, or GCP.
What We Offer:
- Fully remote work, giving you the flexibility you need in the modern world
- A multitude of interesting challenges and opportunities.
- Non-stop professional growth and learning of new technologies.
- Stable income and flexible working hours, opportunities for promotion.
- Friendly and professional peers.