Linux Systems Developer

Becrypt; Greater London; Presencial; GBP 80.000 - 100.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Private medical insurance

Pension scheme

Life cover 4 x salary

Season ticket loan

Salary exchange benefits

Descripción de la vacante

CareerPoster is seeking a Linux Systems Developer to design, develop and maintain secure Linux-based software. You will work close to the OS, solving complex problems with a strong emphasis on security engineering and system-level programming.

The role involves implementing Linux components with C++, Python, and Bash, applying secure coding practices and collaborating in design reviews to improve development workflows. Candidates should be adept at debugging and OS-level issue resolution.

Formación

• Strong programming experience in C and C++, including memory management and system-level programming.
• Proficiency in Python and Bash scripting for automation, tooling, testing and integration.
• Solid understanding of Linux operating systems (Debian-based), services, processes, permissions and admin tasks.
• Practical knowledge of OpenSSL and PKI fundamentals.
• Understanding of Linux security mechanisms including seccomp, udev and auditd.
• Knowledge of Linux privilege management and application isolation.
• Awareness of secure software development practices, threat mitigation and common vulnerabilities.
• Experience using debugging and diagnostic tools to investigate OS issues.
• Ability to work independently and communicate technical concepts clearly.

Responsabilidades

• Design, implement, test and maintain Linux components using C++, Python and Bash.
• Develop efficient, secure, reliable software with a focus on security.
• Participate in code reviews, technical design discussions and process improvements.
• Apply secure coding principles and security-by-design across the SDLC.

Conocimientos

C++

Python

Bash

Linux internals

Security engineering

OpenSSL

X.509 PKI

seccomp

udev

auditd

privilege management

secure SDLC

debugging tools

communication

Herramientas

OpenSSL

Git

CI/CD

Testing frameworks

Descripción del empleo

About the Role

We are seeking a skilled Linux Systems Developer with strong programming skills in C++, Python and Bash, alongside a solid understanding of Linux internals, system-level development and security engineering.

The successful candidate will design, develop and maintain secure, reliable software for Linux-based systems. They will have practical experience with Linux security mechanisms, cryptographic technologies, certificate management and system hardening, with the ability to apply security principles throughout the software development life cycle.

This role is suited to an engineer who enjoys working close to the operating system, solving complex technical problems and building robust, security-focused software.

Key Responsibilities

• Design, implement, test and maintain Linux components using C++, Python and Bash.
• Develop efficient, reliable and maintainable software with a strong emphasis on security.
• Participate in code reviews, technical design discussions and continuous improvement of development practices.
• Apply secure coding principles and security-by-design practices to Linux software development.

Required Skills & Qualifications

• Strong practical programming experience in C and C++, including debugging, memory management and system-level programming.
• Proficiency in Python and Bash scripting for automation, tooling, testing and integration.
• Strong understanding of Linux operating systems, especially Debian-based ones, system services, process management, permissions and system administration.
• Practical knowledge of OpenSSL (both on the command line and programmatically), X.509 certificates and PKI fundamentals.
• Understanding of Linux security mechanisms including seccomp, udev and auditd.
• Knowledge of Linux privilege management, capabilities, access controls and application isolation.
• Understanding of secure software development practices, threat mitigation and common security vulnerabilities.
• Experience using debugging and diagnostic tools to investigate software and OS issues.
• Ability to work independently, solve complex technical problems and communicate technical concepts clearly.

Nice-to-Have

• Experience developing Linux daemons and system services.
• Practical experience troubleshooting TLS, certificate validation and certificate-based authentication issues.
• Familiarity with Linux kernel interfaces, system calls, ioctls or device drivers.
• Experience with Git, CI/CD, automated testing and software packaging.
• Familiarity with security standards, vulnerability management and security assessment processes.
• Experience working with embedded Linux, industrial systems, appliances, or other security-sensitive Linux platforms.

Why Join Us

• Shape the future of secure endpoint technology.
• Work on high-impact projects for global, high-profile clients.
• Collaborate with a team of experts pushing the boundaries of Linux and security.
• Competitive compensation and strong opportunities for professional growth.

Package & discretionary benefits:

• 25 days annual leave plus an additional 2 days after 2 years' service
• 5 days additional holiday purchase available
• Private medical insurance
• Health cashback plan with Healthshield
• Pension scheme
• Life cover 4 x salary
• Season ticket loan
• Salary exchange benefits (ride2work, pension)
• Subsidised gym membership
• Employee referral scheme

Role will be subject to an employment screening process and will require security clearance.