Calsoft - Senior Developer - Security & Networking Applications

Role Overview :

We are looking for a seasoned C++ Developer with deep expertise in userspace development for security and networking applications.

The ideal candidate will work on building high-performance, secure, and scalable software components for next-generation network and security platforms.

Key Responsibilities :

- Design and implement userspace C++ modules for networking and security applications.

- Develop and optimize packet processing, protocol handling, and secure communication features.

- Collaborate with security architects and network engineers to integrate advanced security mechanisms.

- Conduct performance tuning, memory optimization, and debugging of complex systems.

- Participate in code reviews, architecture discussions, and mentoring junior developers.

- Ensure compliance with secure coding practices and industry standards.

Mandatory Skills :

- Strong proficiency in C++ (11/14/17) and Linux userspace programming.

- Solid understanding of networking protocols (TCP/IP, UDP, HTTP, TLS, etc.).

- Experience with multithreading, IPC, and synchronization mechanisms.

- Familiarity with packet capture and analysis tools (e.g., Wireshark, tcpdump).

- Knowledge of security principles, encryption, and authentication mechanisms.

- Hands-on experience with CMake, Makefiles, and Linux debugging tools (gdb, strace, valgrind).

- Strong problem-solving and analytical skills.

Good-to-Have Skills :

- Experience with DPDK, Netfilter, or libpcap. Exposure to firewall, IDS/IPS, or VPN development.

- Familiarity with Zero Trust, PKI, or certificate management.

- Knowledge of containerization (Docker) and orchestration tools (Kubernetes).

- Scripting skills in Python, Bash, or Perl for automation.

- Experience with CI/CD pipelines, Git, and Agile methodologies.

- Contributions to open-source security or networking projects.

Education : Bachelors or Masters degree in Computer Science, Information Security, or related field.