Senior Security Developer – Focus on Cyber Defense

Position: Senior Security Developer – Focus on Cyber Defense

Start Date: 01.01.2026

Contract: Initial 1-year contract with possibility of extension for long-term collaboration

Work Mode: 100% remote

Rate: 160–180 PLN/h NET + VAT (B2B)

Project Description

We are seeking a Senior Security Developer with a strong focus on cyber defense to join a dynamic IT security team. The role involves developing, maintaining, and improving security automation tools and processes to enhance incident response capabilities. This is a long-term, strategic project aimed at strengthening global cybersecurity operations, with opportunities to mentor junior developers and influence security engineering practices.

Responsibilities

• Develop and maintain Python-based software for security automation and incident response.

• Implement and maintain CI/CD pipelines, automated testing, and deployment processes to ensure efficient development workflows.

• Mentor junior developers, deliver technical training, and contribute to the team’s knowledge base and best practices.

• Ensure timely delivery of development tasks while maintaining functional and quality standards.

• Apply software engineering best practices, design patterns, and development methodologies across the team.

• Lead the design, development, and implementation of global security tools, processes, and functionalities.

Requirements

• Bachelor’s or Master’s degree in IT, preferably with a specialization in cybersecurity.

• Proven experience in software development: proficiency in writing clean and efficient Python code according to industry best practices.

• Strong software design and architecture skills: ability to design and maintain scalable systems in a team environment.

• Experience with version control and branching strategies (GitFlow/GitHub Flow), CI/CD pipelines, code reviews, and unit testing.

• Quality assurance and testing: implementing automated tests and QA processes, ensuring code quality, performance, and long-term maintainability.

• Advanced problem-solving and debugging skills, with experience optimizing complex systems and resolving performance issues.

• Deep knowledge of IT security (SIEM, firewalls, EDR, IDS/IPS, SOAR, vulnerability scanning, endpoint/network forensic analysis, Threat Hunting).

• Experience with SOAR tools for security incident automation, including developing use cases/playbooks for automated SOC operations or vulnerability analysis.

• Broad understanding of modern IT infrastructure, including AI/ML and big data analytics.

• Knowledge of security frameworks such as MITRE or the Kill Chain model, including tactics, techniques, and procedures (TTPs).

• Structured, service-oriented approach with high self-motivation and excellent personal organization.

• Minimum 5 years of relevant experience in cybersecurity software development.

Recruitment Process

• 2 interviews

• Contract duration: 1 year with option for extension

• Remote work: yes